Communication perception integrated design method using broadband terahertz

Abstract

The invention discloses a communication perception integrated design method using broadband terahertz, comprising the following steps: obtaining the setting of a phase shifter in a 3D beam former and the constraint condition of a true time delay line unit in a perception coverage range; defining the perception resolution, and obtaining a constraint condition of a true time delay line unit in the 3D beam former under the perception resolution; and carrying out beam forming design according to the obtained constraint condition of the true delay line unit in the 3D beam former so as to maximize the reachable rate of the communication user under the condition of satisfying the perception coverage constraint and the perception resolution constraint. According to the invention, communication and sensing processes are realized simultaneously based on wave beam squint, the reachable rate of communication users is remarkably improved, and the coverage range and accuracy of sensing are ensured.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a communication perception integrated design method using broadband terahertz. Background Art

[0002] Integrated sensing and communications (ISAC) technology uses the same frequency band to perform wireless communication and perception processes on a single hardware platform, effectively solving the spectrum congestion problem. In the ISAC system, communication signals can be used for target detection, significantly reducing the associated overhead of dedicated radar signals.

[0003] Terahertz transmission technology combined with massive multiple-input multiple-output (MIMO) technology provides abundant spectrum resources and improves the communication rate and detection accuracy of ISAC systems. However, the use of large bandwidth in terahertz massive MIMO systems can lead to beam squint effects, resulting in a significant decrease in communication performance. Specifically, broadband transmission in the terahertz band causes the channel to have frequency correlation, so that the beams generated by traditional narrowband beamforming algorithms gradually squint in different directions at different frequencies. Therefore, most beams suffer from severe energy leakage. To overcome this challenge, existing studies have introduced true delay lines to compensate for the beam squint effect, thereby significantly alleviating the energy leakage phenomenon. Although beam squint effects should be compensated in the communication process, beam squint effects are beneficial for perception, especially when beam scanning is used to direct beams of different frequencies to a specific direction. Therefore, the angle estimation of the target can be achieved by using a system using orthogonal frequency division multiplexing technology. Compared with the traditional angle estimation of the target based on time division multiplexing, the time overhead of this scheme is significantly reduced. Summary of the invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides a communication-perception integrated design method using broadband terahertz to achieve a sufficiently large perception angle space to cover all potential target directions, while ensuring good perception (angle) resolution and maximizing the achievable rate of communication users.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution, a communication perception integrated design method using broadband terahertz, comprising:

[0007] Obtaining the setting of the phase shifter and the constraint conditions of the true delay line unit in the 3D beamformer that meet the sensing coverage range;

[0008] Define the perceived resolution and obtain the constraints of the true delay line unit in the 3D beamformer that meet the perceived resolution;

[0009] The beamforming design is performed according to the constraints of the true delay line unit in the 3D beamformer to maximize the achievable rate of the communication users.

[0010] As a preferred solution of the integrated design method of communication perception using broadband terahertz described in the present invention, wherein: the beamforming is based on a 3D beamformer with a two-layer true delay line architecture to process the signal propagation delay corresponding to the frequency, the 3D beamformer is composed of two layers of true delay lines and a layer of phase shifter in cascade, wherein one layer of true delay line TTD-a is composed of N1 true delay line units, which are used to control the delay in the horizontal direction, and the other layer of true delay line TTD-e is composed of N2 true delay line units, which are used to control the delay in the vertical direction, and the phase shifter layer is composed of N phase shifters;

[0011] Connecting the 3D beamformer to a uniform planar antenna array with N = N1 × N2 antennas, the beamforming vector is:

[0012]

[0013] Where γ = γ1 + γ2 represents the standard phase shift of the phase shifter, n1t1, n2t2 and nγ represent the time delay caused by the n1th TTD-e unit and the n2th TTD-a unit and the phase shift caused by the nth phase shifter, n = n2 × N1 + n1, respectively. is the baseband frequency corresponding to the mth subcarrier.

[0014] As a preferred solution of the integrated design method of communication perception using broadband terahertz described in the present invention, wherein: the setting of the phase shifter and the constraint conditions of the true delay line unit include that for any azimuth and elevation angle (φ, θ) where the target may be located, the system perception angle space is defined as {(φ, θ)|φ∈[φ low ,φ high ],θ∈[θ low ,θ high ]}, the standard phase shift of the phase shifter is set to align the beam on the 0th subcarrier with the starting direction of the beam squint, and the obtained γ1 and γ2 are as follows:

[0015]

[0016] Where d is the antenna spacing, c is the speed of light, and f0 is the frequency corresponding to the 0th subcarrier;

[0017] The TTD-e unit and the TTD-a unit are set to make the direction corresponding to the beam on the Mth subcarrier smaller than the end direction of the beam squint, and the constraint condition of the delay between the TTD-e unit and the TTD-a unit is obtained as follows: in and Given by:

[0018]

[0019] Where W is the system bandwidth, f M is the frequency corresponding to the Mth subcarrier;

[0020] The beam is squinted on the M+1 subcarrier to cover the sensing angle space, and the base station receives reflected echo signals from all non-cooperative sensing target directions.

[0021] As a preferred solution of the communication perception integrated design method using broadband terahertz described in the present invention, wherein: the definition of perception resolution includes defining a feasible set to ensure the perception resolution, and the constraint condition of the number of subcarriers is obtained as follows:

[0022]

[0023] Where Δf is the subcarrier frequency spacing, Δψ ∈ is the ∈-beamwidth;

[0024] The constraints of the delay between TTD-e unit and TTD-a unit are obtained as follows: in and Given by:

[0025]

[0026] As a preferred solution of the integrated design method of communication perception using broadband terahertz described in the present invention, wherein: the definition of perception resolution also includes using overlapping beams to make any direction in the perception angle space covered by the ∈-beam width of at least one beam, that is, the azimuth and elevation angle intervals between the beams of adjacent subcarriers are smaller than the ∈-beam width of all directions in the perception angle space, wherein the ∈-beam width indicates that the beam can achieve an array gain greater than (1-∈) multiplied by the array gain peak in the angle domain. The TTD-e unit and the TTD-a unit delays t1 and t2 define a feasible set As shown below:

[0027]

[0028] Among them, Δψ ∈is the ∈-beam width, which is inversely proportional to the number of base station antennas.

[0029] As a preferred solution of the communication perception integrated design method using broadband terahertz described in the present invention, the definition of perception resolution is also based on the definition of ∈-beam width, and the feasible set Converting from angle domain constraints to frequency domain constraints is equivalent to subcarrier frequency spacing Constraints, get the feasible set As shown below:

[0030]

[0031] in and By order and We get, where ξ 1,m With ξ 2,m As shown below:

[0032]

[0033] As a preferred solution of the communication perception integrated design method using broadband terahertz according to the present invention, the beamforming design includes introducing a delay for the obtained TTD-e unit and TTD-a unit delays t1 and t2. To ensure that the delays generated by all TTD-e units and TTD-a units are positive numbers, the actual true delay line circuit is completed.

[0034] As a preferred scheme of the integrated design method of communication and perception using broadband terahertz described in the present invention, wherein: the maximizing the reachable rate of communication users includes that the reachable rate of the system and the spatial range of the perception angle are both determined by the delays t1 and t2 of the TTD-e unit and the TTD-a unit. Therefore, by adjusting the values ​​of the delays t1 and t2, it is possible to achieve a performance trade-off between the reachable rate of the system and the perception coverage range while ensuring sufficient perception resolution, that is, the increase in the reachable rate of the system can be achieved by sacrificing the perception coverage range, and vice versa, the increase in the perception coverage range can be achieved by sacrificing the reachable rate of the system.

[0035] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, the steps of a communication perception integrated design method using broadband terahertz are implemented.

[0036] A computer-readable storage medium stores a computer program thereon, characterized in that when the computer program is executed by a processor, the steps of a communication perception integrated design method using broadband terahertz are implemented.

[0037] Beneficial effects of the invention: The invention provides a broadband terahertz communication and perception integrated design method, which realizes the communication and perception processes simultaneously based on near-field beam squint. The design method ensures the perception range and perception resolution, and significantly improves the achievable rate of communication users; in addition, the method is based on a 3D beamformer with a two-layer true delay line architecture, which greatly reduces the required TTD number and significantly reduces the system hardware cost and computational complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0039] Figure 1 A schematic flow chart of a communication-perception integrated design method using broadband terahertz is provided for one embodiment of the present invention.

[0040] Figure 2 A schematic diagram of a 3D beamformer structure with a two-layer true delay line architecture using a broadband terahertz communication perception integrated design method provided by an embodiment of the present invention.

[0041] Figure 3 A schematic diagram of simulation results of a communication-perception integrated design method using broadband terahertz provided by an embodiment of the present invention.

[0042] Figure 4 A schematic diagram of simulation results of an embodiment of a performance trade-off between a system achievable rate and a sensing coverage range of a communication and sensing integrated design method using broadband terahertz provided by an embodiment of the present invention.

[0043] Reference numerals:

[0044] 1: True delay line for controlling the time delay in the effective elevation direction; 2: True delay line for controlling the time delay in the effective azimuth direction; 3: Phase shifter; 4: Antenna unit. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0049] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Example 1

[0052] Reference Figure 1-Figure 4 , which is the first embodiment of the present invention, provides a communication perception integrated design method using broadband terahertz, including:

[0053] like Figure 1As shown, the present invention provides a communication perception integrated design method and system using broadband terahertz, which is applied to a large-scale MIMO communication perception integrated system working in the terahertz frequency band, wherein the base station deploys a uniform planar antenna array, the number of antennas is N = N1 × N2, and the transmission carrier frequency is f c , bandwidth is W, number of subcarriers is M+1, that is, the frequency of the mth subcarrier is The lowest subcarrier frequency is

[0054] The method is based on a 3D beamformer with a two-layer true delay line architecture to perform beamforming design to handle frequency-dependent signal propagation delays, such as Figure 2 As shown, the beamformer is composed of two layers of true time delay lines and a layer of phase shifter in cascade, wherein one layer of true time delay line (TTD-a) is composed of N1 true time delay line units, which are used to control the time delay in the horizontal direction, and the other layer of true time delay line (TTD-e) is composed of N2 true time delay line units, which are used to control the time delay in the vertical direction, and the phase shifter layer is composed of N phase shifters;

[0055] The beamforming vector obtained by this beamformer is:

[0056]

[0057] Where γ = γ1 + γ2 represents the standard phase shift of the phase shifter, then n1t1, n2t2, and nγ represent the time delay generated by the n1th TTD-e unit and the n2th TTD-a unit and the phase shift generated by the nth phase shifter (n = n2 × N1 + n1), respectively. is the baseband frequency corresponding to the mth subcarrier, that is

[0058] By setting the phase shifter and the true delay line unit of the 3D beamformer of the two-layer true delay line architecture, a sufficiently large perception angle space is achieved to cover all potential target directions, while ensuring good perception (angle) resolution and maximizing the achievable rate of the communication user; the method comprises the following steps:

[0059] Step 1. Obtain the settings of the phase shifters and the constraints of the true delay line unit in the 3D beamformer to ensure a sufficiently large sensing angle space That is, the perception coverage constraint, where t1 and t2 represent the standard delays of the two layers of true delay line units. Specifically, for any azimuth and elevation angles (φ, θ) where the target may be located, the system perception angle space is defined as {(φ, θ)|φ∈[φ low ,φ high ],θ∈[θ low ,θ high]}, in order to ensure that all subcarriers cover the entire perception angle space, the standard phase shift of the phase shifter is set to make the beam on the 0th subcarrier align with the starting direction of the beam squint, and the obtained γ1 and γ2 are as follows:

[0060]

[0061]

[0062] The TTD-e unit and the TTD-a unit are set so that the direction corresponding to the beam on the Mth subcarrier is smaller than the end direction of the beam squint, and the constraint condition of the delay between the TTD-e unit and the TTD-a unit is obtained as follows: in and Given by:

[0063]

[0064] By adopting the above-mentioned beam former setting method, the beam is squinted on the M+1 subcarrier to cover the entire sensing angle space, so that the base station can receive reflected echo signals from all non-cooperative sensing target directions to estimate the target direction.

[0065] Step 2. Define the perceptual (angular) resolution and obtain the constraints of the true delay line unit in the 3D beamformer that meet the perceptual (angular) resolution. Specifically, in order to ensure the perceptual (angular) resolution, overlapping beams are used so that any direction in the perceptual angle space can be covered by the ∈-beamwidth of at least one beam, that is, the azimuth and elevation angle intervals between the beams of adjacent subcarriers should be smaller than the ∈-beamwidth of all directions in the perceptual angle space, where the ∈-beamwidth indicates that the beam can achieve an array gain in the angular domain greater than (1-∈) multiplied by the array gain peak value. Therefore, a feasible set is defined for the delays t1 and t2 of the TTD-e unit and the TTD-a unit. To ensure good perceived (angular) resolution, as follows:

[0066]

[0067] where Δψ ∈ is the ∈-beam width, which is inversely proportional to the number of base station antennas.

[0068] Based on the definition of ∈-beamwidth, the feasible set Converting from angle domain constraints to frequency domain constraints is equivalent to a subcarrier frequency spacing Constraints, get the feasible set As shown below:

[0069]

[0070] in and Through and We get, where ξ 1,m With ξ 2,m As shown below:

[0071]

[0072] Based on the above analysis, the feasible set that ensures good perceptual (angle) resolution is defined, and the constraints on the number of subcarriers are as follows:

[0073]

[0074] Therefore, the constraints of the delay between TTD-e unit and TTD-a unit are obtained as follows: in and Given by:

[0075]

[0076] where Δψ ∈ is the ∈-beamwidth.

[0077] Step 3. Perform beamforming design based on the constraints of the true delay line unit in the 3D beamformer obtained in Steps 1 and 2 to maximize the achievable rate of the communication user while satisfying the constraints of the sensing coverage range and the sensing (angle) resolution. Specifically, for any azimuth and elevation angle (θ, φ) where the target may be located, define the system sensing angle space as {(θ, φ)|θ∈[θ low ,θ high ],φ∈[φ low ,φ high ]},when and When , the standard phase shift γ of the phase shifter in the 3D beamformer and the standard delay of the true delay line unit are set as follows:

[0078]

[0079] when or When the perceptual coverage constraint and the perceptual (angle) resolution constraint conflict with each other, the system is considered physically infeasible at this time, and it is necessary to reduce the perceptual coverage or lower the perceptual (angle) resolution requirement to make the system feasible. The achievable rate and perceptual angle spatial range of the system are determined by the time delays t1 and t2 of the TTD-e unit and the TTD-a unit. Therefore, by adjusting the values ​​of the time delays t1 and t2, it is possible to achieve a performance trade-off between the system achievable rate and the perceptual coverage while ensuring sufficient perceptual resolution, that is, the perceptual coverage can be sacrificed in exchange for an increase in the system achievable rate, and vice versa, the perceptual coverage can be increased by sacrificing the system achievable rate.

[0080] At the same time, a delay should be introduced for the obtained TTD-e unit and TTD-a unit delay t1 and t2 To ensure that the delays generated by all TTD-e units and TTD-a units are positive, thus completing the actual true delay line circuit implementation.

[0081] Figure 3 The figure shows the result obtained by simulation verification of the present invention, wherein the parameters are set as follows: the system carrier frequency is 100 GHz, the terahertz orthogonal frequency division multiplexing system bandwidth is 6 GHz, the number of subcarriers is 128, the number of base station antennas N1 is 15, N2 is 15, the base station antenna spacing is half the carrier wavelength, and a 3 dB beam width is used Assume that the perception angle space is {(θ,φ)|0°≤φ≤10°,0°≤θ≤10°}, and the communication user is located at the starting direction (10°,10°) of the perception angle space.

[0082] Figure 3 The two curves in are the changes of the system communication rate with the transmission signal-to-noise ratio obtained by the scheme proposed by the present invention and the traditional beam scanning scheme, wherein the traditional beam scanning scheme is based on time domain beam scanning. It can be seen that the scheme proposed by the present invention achieves a significant improvement in the communication rate, which verifies the advancement of the present invention.

[0083] Figure 4 The figure shows the results of the simulation verification of the performance trade-off between the achievable rate and the perceived coverage of the system provided by the present invention, wherein the parameters are set as follows: the base station transmit signal-to-noise ratio is 1 dB, the system carrier frequency is 60 GHz, the terahertz orthogonal frequency division multiplexing system bandwidth is 1 GHz, the number of subcarriers is 128, the number of base station antennas N1 is 100, 250 and 400, N2 is 100, the base station antenna spacing is half the carrier wavelength, and a 3 dB beam width is used. Assume that the perception angle space is {(θ,φ)|0°≤φ≤60°,0°≤θ≤60°}, and the communication user is located at the starting direction (90°,90°) of the perception angle space.

[0084] Figure 4 The three curves in the figure are the relationship between the system communication rate and the perception coverage when the number of base station antennas N1 is 100, 250 and 400, respectively. This verifies the effectiveness of the proposed integrated design method for communication and perception using broadband terahertz, and demonstrates the performance trade-off between the system communication rate and the perception coverage, that is, the increase in the system achievable rate can be achieved by sacrificing the perception coverage, and vice versa.

[0085] Example 2

[0086] The second embodiment of the present invention is different from the previous embodiment in that:

[0087] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0088] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0089] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0090] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0091] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0092] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A communication perception integrated design method using broadband terahertz, characterized by: include, Obtaining the setting of the phase shifter and the constraint conditions of the true delay line unit in the 3D beamformer that meet the sensing coverage range; Define the perceived resolution and obtain the constraints of the true delay line unit in the 3D beamformer that meet the perceived resolution; The beamforming design is performed according to the constraints of the true delay line unit in the 3D beamformer to maximize the achievable rate of the communication users.

2. A communication perception integrated design method using broadband terahertz as claimed in claim 1, characterized in that: The beamforming is based on a 3D beamformer with a two-layer true delay line architecture to process the signal propagation delay corresponding to the frequency. The 3D beamformer is composed of two layers of true delay lines and a layer of phase shifter in cascade, wherein one layer of true delay line TTD-a is composed of N1 true delay line units for controlling the delay in the horizontal direction, and the other layer of true delay line TTD-e is composed of N2 true delay line units for controlling the delay in the vertical direction. The phase shifter layer is composed of N phase shifters. Connecting the 3D beamformer to a uniform planar antenna array with N = N1 × N2 antennas, the beamforming vector is: Where γ = γ1 + γ2 represents the standard phase shift of the phase shifter, n1t1, n2t2 and nγ represent the time delay caused by the n1th TTD-e unit and the n2th TTD-a unit and the phase shift caused by the nth phase shifter, n = n2 × N1 + n1, respectively. is the baseband frequency corresponding to the mth subcarrier.

3. A communication perception integrated design method using broadband terahertz as claimed in claim 2, characterized in that: The setting of the phase shifter and the constraints of the true delay line unit include that for any azimuth and elevation angle (φ, θ) where the target may be located, the system perception angle space is defined as {(φ, θ)|φ∈[φ low ,φ high ],θ∈[θ low ,θ high ]}, the standard phase shift of the phase shifter is set to align the beam on the 0th subcarrier with the starting direction of the beam squint, and the obtained γ1 and γ2 are as follows: Where d is the antenna spacing, c is the speed of light, and f0 is the frequency corresponding to the 0th subcarrier; The TTD-e unit and the TTD-a unit are set to make the direction corresponding to the beam on the Mth subcarrier smaller than the end direction of the beam squint, and the constraint condition of the delay between the TTD-e unit and the TTD-a unit is obtained as follows: in and Given by: Where W is the system bandwidth, f M is the frequency corresponding to the Mth subcarrier; The beam is squinted on the M+1 subcarrier to cover the sensing angle space, and the base station receives reflected echo signals from all non-cooperative sensing target directions.

4. A communication perception integrated design method using broadband terahertz as claimed in claim 3, characterized in that: Defining the perceptual resolution includes defining a feasible set that ensures the perceptual resolution, and obtaining the constraint condition of the number of subcarriers as follows: Where Δf is the subcarrier frequency spacing, Δψ ∈ is the ∈-beamwidth; The constraints of the delay between TTD-e unit and TTD-a unit are obtained as follows: in and Given by:

5. The communication perception integrated design method using broadband terahertz as claimed in claim 4, characterized in that: The definition of the perception resolution also includes using overlapping beams so that any direction in the perception angle space can be covered by the ∈-beam width of at least one beam, that is, the azimuth and elevation angle intervals between the beams of adjacent subcarriers are smaller than the ∈-beam width of all directions in the perception angle space, wherein the ∈-beam width indicates that the beam can achieve an array gain greater than (1-∈) multiplied by the array gain peak in the angle domain. The TTD-e unit and the TTD-a unit delays t1 and t2 define a feasible set As shown below: Among them, Δψ ∈ is the ∈-beam width, which is inversely proportional to the number of base station antennas.

6. A communication perception integrated design method using broadband terahertz as claimed in claim 5, characterized in that: The definition of perceptual resolution is also based on the definition of ∈-beamwidth, which is the feasible set Converting from angle domain constraints to frequency domain constraints is equivalent to subcarrier frequency spacing Constraints, get the feasible set As shown below: in and By order and We get, where ξ 1,m With ξ 2,m As shown below:

7. A communication perception integrated design method using broadband terahertz as claimed in claim 6, characterized in that: The beamforming design includes introducing a delay for the obtained TTD-e unit and TTD-a unit delays t1 and t2. To ensure that the delays generated by all TTD-e units and TTD-a units are positive numbers, the actual true delay line circuit is completed.

8. The communication perception integrated design method using broadband terahertz as claimed in claim 7, characterized in that: The maximizing the achievable rate of the communication user includes that the achievable rate of the system and the spatial range of the perception angle are both determined by the delays t1 and t2 of the TTD-e unit and the TTD-a unit. Therefore, by adjusting the values ​​of the delays t1 and t2, it is possible to achieve a performance trade-off between the system achievable rate and the perception coverage range while ensuring sufficient perception resolution, that is, the increase in the system achievable rate can be achieved by sacrificing the perception coverage range, and vice versa, the increase in the perception coverage range can be achieved by sacrificing the system achievable rate.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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