A multi-data stream transmission method based on a multi-domain modulation array structure, a storage medium and an apparatus

Abstract

The application discloses a multi-data stream transmission method based on a multi-domain modulation array structure, a storage medium and equipment, and belongs to the technical field of antenna arrays.The application solves the problems of high antenna array hardware complexity and poor beam degree of freedom control performance of the existing method.The application multiplies the weighted synthesis signals of each subarray with each group of orthogonal code sequences respectively to obtain the synthesis signals of each subarray, and then performs merging processing on the synthesis signals of each subarray to obtain a merged signal, and the merged signal is processed through one radio frequency link to obtain one discrete digital signal, the discrete digital signal is multiplied with each group of orthogonal code sequences in a digital baseband network respectively to obtain each group of discrete digital signals, and each group of discrete digital signals is accumulated in each complete code length period to obtain each group of new discrete sequences.The application has both the hardware advantages of an analog array and the beam performance control advantages of a full digital array, and can be applied to multi-data stream transmission based on a modulation array.

Description

Technical Field

[0001] This invention belongs to the field of antenna array technology, specifically relating to a multi-data stream transmission method, storage medium, and device based on a multi-domain modulation array structure. Background Technology

[0002] Array antennas play a vital role in modern electronics. Among them, analog arrays were the earliest and most widely used large-scale array structures. Analog arrays are mostly composed of phase shifter networks, and their core feature is that they use only a single radio frequency (RF) link. After the transmitted signal passes through a single RF link, it is divided into various antenna branches. Each antenna branch is phase-adjusted by a phase shifter, thereby forming a beam in a specific direction in space. The received signals are weighted by the phase shifters and then combined into a single RF link. This type of array, which only contains a single RF link, cannot provide data stream multiplexing functionality. In a fully digital precoding structure, the transmitted or received signals of each antenna element can be independently amplitude and phase controlled in the digital domain, thereby achieving complete degree-of-freedom control over each antenna and providing high beam performance. Precoding and combination processing are all completed in the baseband digital domain, and the digital signals are up-converted and down-converted to the antennas via their respective independent RF links. However, each array element requires a complete RF link, resulting in high cost, power consumption, and complexity. The hybrid precoding structure includes a two-level processing process of digital precoding layer and analog precoding layer, which can significantly reduce the number of RF links while supporting more parallel data streams. Although the hybrid precoding structure has achieved a compromise between performance and hardware complexity, its ability to reduce the hardware complexity of the antenna array and improve the performance of beam degree-of-freedom control is still relatively limited. Summary of the Invention

[0003] This invention addresses the problems of high hardware complexity and poor beam freedom control performance of existing methods for antenna arrays by proposing a multi-data stream transmission method, storage medium, and device based on a multi-domain modulation array structure.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a multi-data stream transmission method based on a multi-domain modulation array structure, the method specifically including the following steps:

[0005] Step 1: For the incident signal Each subarray pair of incident signals was obtained. The weighted synthesized signal;

[0006] Step 2, place the first The weighted composite signal of each subarray multiplied by the sequence , obtained the A composite signal , ;

[0007] Step 3: Combine the composite signals of all K subarrays to obtain the combined signal;

[0008] Step 4: Process the merged signal through an RF link to obtain a discrete digital signal;

[0009] Step 5: Input the discrete digital signal into the digital baseband network. In the digital baseband network, multiply the K sets of orthogonal code sequences with the discrete digital signal respectively to obtain the K sets of discrete digital signals.

[0010] Step 6: Within each complete code length period N, respectively, the first... The discrete digital signals are accumulated to obtain the first group. A new set of discrete sequences is generated, and then each set of discrete digital signals is processed sequentially to obtain K new sets of discrete sequences;

[0011] Step 7: Process the K new discrete sequences using a hybrid precoding algorithm.

[0012] Furthermore, step one specifically includes:

[0013]

[0014] in, For the first The weighted composite signal of each subarray , The total number of subarrays, is the base of the natural logarithm. The imaginary unit, The wavelength of an electromagnetic wave Indicates the first The first of the sub-arrays The weighted values ​​of the array elements, Indicates the first The first in the formation The distance between the first element of the first array and the first element of the first subarray. Indicates the first The number of array elements in each subarray. For incident signal The incident angle relative to each subarray.

[0015] Furthermore, the specific process of step two is as follows:

[0016]

[0017] in, It consists of K sets of orthogonal code sequences.

[0018] Preferably, the K sets of orthogonal code sequences are m sequences.

[0019] Preferably, the K sets of orthogonal code sequences are gold sequences.

[0020] Furthermore, the specific process of step three is as follows:

[0021]

[0022] in, This is the merged signal.

[0023] Furthermore, the specific process of step five is as follows:

[0024]

[0025] in, For the obtained first The first group of discrete digital signals A data symbol, For the first The first group of orthogonal code sequences A data symbol, For the first discrete digital signal Data symbols.

[0026] Furthermore, the specific process of step six is ​​as follows:

[0027]

[0028] in, For the first The first in a new discrete sequence Data symbols.

[0029] A computer storage medium storing at least one instruction, which is loaded and executed by a processor to implement the multi-data stream transmission method based on a multi-domain modulation array structure.

[0030] A multi-data stream transmission device based on a multi-domain modulation array structure is disclosed. The device includes a processor and a memory. The memory stores at least one instruction, which is loaded and executed by the processor to implement the multi-data stream transmission method based on the multi-domain modulation array structure.

[0031] The beneficial effects of this invention are:

[0032] This invention multiplies the weighted composite signal of each subarray with each set of orthogonal code sequences to obtain the composite signal of each subarray. The composite signals of each subarray are then merged to obtain a merged signal. The merged signal is processed through a radio frequency link to obtain a discrete digital signal. This discrete digital signal is then multiplied with each set of orthogonal code sequences within a digital baseband network to obtain sets of discrete digital signals. Within each complete code length period, each set of discrete digital signals is accumulated to obtain new discrete sequences. This invention further reduces hardware complexity based on traditional hybrid precoding structures, enabling the array to simultaneously possess the capability of single radio frequency link and multi-data stream transmission. It combines the hardware advantages of analog arrays with the beam performance control advantages of all-digital arrays, breaking through the constraints of hardware complexity and beam control freedom in traditional technologies. Attached Figure Description

[0033] Figure 1 This is a flowchart of a multi-data stream transmission method based on a multi-domain modulation array structure according to the present invention;

[0034] Figure 2 This is a diagram of a traditional hybrid precoding array structure;

[0035] Figure 3 This is a diagram of the improved array structure of the present invention. Detailed Implementation

[0036] Traditional hybrid precoding array structures, such as Figure 2 As shown, it is assumed to consist of k RF links (RF1 to RF2). K Each RF link includes a complete low-noise amplifier, downconverter, analog-to-digital converter, etc., and each RF link is equipped with an m-element linear array (element spacing d), i.e., a total of K linear arrays (called subarray 1 to subarray K). This invention proposes a multi-domain modulation array structure using multi-domain (time domain, frequency domain, code domain, and spatial domain) signal processing technology. The multi-domain modulation array structure includes... Each subarray and one radio frequency link are used. The array elements in each subarray are evenly arranged. The proposed multi-domain modulation array structure further reduces its hardware complexity on the basis of the hybrid precoding structure, enabling the array to simultaneously have the ability to transmit multiple data streams with a single radio frequency link. It combines the advantages of analog arrays (simple structure) and all-digital arrays (high beam performance), breaking through the constraints of traditional technology hardware complexity and beam control freedom.

[0037] Specific implementation method one: Combining Figure 1 and Figure 3 This embodiment describes a multi-data stream transmission method based on a multi-domain modulation array structure, which specifically includes the following steps:

[0038] Step 1: For the incident signal Each subarray pair of incident signals was obtained. The weighted synthesized signal;

[0039]

[0040] in, For the first The weighted composite signal of each subarray , The total number of subarrays, is the base of the natural logarithm. The imaginary unit, The wavelength of an electromagnetic wave Indicates the first The first of the sub-arrays The weighted values ​​of the array elements, Indicates the first The first in the formation The distance between the first element of the first array and the first element of the first subarray. Indicates the first The number of array elements in each subarray. For incident signal Relative to the incident angle of each subarray;

[0041] Step 2, based on Figure 3 , will the The weighted composite signal of each subarray multiplied by the sequence , obtained the A composite signal :

[0042]

[0043] in, It consists of K sets of orthogonal code sequences;

[0044] It should be noted that the K sets of orthogonal code sequences can be m-sequences, gold sequences, and other code sequences with good orthogonality. The multiplication process can be implemented using analog multipliers, phase shifters, etc. discrete sequence The analog signal continuous representation method;

[0045] Step 3: Combine the composite signals of all K subarrays to obtain the combined signal:

[0046]

[0047] in, The merged signal;

[0048] Step 4: Process the merged signal through an RF link to obtain a discrete digital signal. Then, process the first discrete digital signal... Each data symbol is denoted as ;

[0049] Assuming the bandwidth of the input signal is B, the sampling rate is set to:

[0050]

[0051] The spreading code sequence rate is:

[0052]

[0053] Where N represents the code length of a complete period of the code sequence, the sampling rate then becomes:

[0054]

[0055] Step 5: Input the discrete digital signal into the digital baseband network. Within the digital baseband network, multiply the K sets of orthogonal code sequences with the discrete digital signal to obtain K sets of discrete digital signals:

[0056]

[0057] in, For the obtained first The first group of discrete digital signals A data symbol, For the first The first group of orthogonal code sequences One data symbol;

[0058] Step 6: Within each complete code length period N, respectively, the first... The discrete digital signals are accumulated to obtain the first group. A new set of discrete sequences is generated, and then each set of discrete digital signals is processed sequentially to obtain K new sets of discrete sequences;

[0059]

[0060] in, For the first The first in a new discrete sequence One data symbol;

[0061] Step 7: Process the K new discrete sequences using a conventional hybrid precoding algorithm.

[0062] Specific Implementation Method Two: This implementation method is a computer storage medium that stores at least one instruction. The at least one instruction is loaded and executed by a processor to implement the multi-data stream transmission method based on a multi-domain modulation array structure.

[0063] It should be understood that the instructions include computer program products, software, or computerized methods corresponding to any method described in this invention; the instructions can be used to program computer systems or other electronic devices. Computer storage media may include readable media on which instructions are stored, and may include, but are not limited to, magnetic storage media, optical storage media; magneto-optical storage media include read-only memory (ROM), random access memory (RAM), erasable programmable memory (e.g., EPROM and EEPROM), and flash memory layers, or other types of media suitable for storing electronic instructions.

[0064] Specific Implementation Method 3: This implementation method is a multi-data stream transmission device based on a multi-domain modulation array structure. The device includes a processor and a memory. It should be understood that it includes any device including a processor and a memory described in this invention. The device may also include other units and modules that perform display, interaction, processing, control and other functions through signals or instructions.

[0065] The memory stores at least one instruction, which is loaded and executed by the processor to implement the multi-data stream transmission method based on a multi-domain modulation array structure.

[0066] Those skilled in the art will understand that at least one stored instruction constitutes a computer program product corresponding to a method or system. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of this application can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0067] This application is described with reference to flowchart illustrations and / or block diagrams of methods, systems, and computer program products according to embodiments of this application, and can also be used with corresponding devices. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0068] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0069] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0070] The above examples of the present invention are merely illustrative of the computational model and process of the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is impossible to exhaustively list all possible implementations here. Any obvious variations or modifications derived from the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A method for transmitting multiple data streams based on a multi-domain modulation array structure, characterized in that, The method specifically includes the following steps: Step 1: For the incident signal Each subarray pair of incident signals was obtained. The weighted synthesized signal; Step 2, place the first The weighted composite signal of each subarray multiplied by the sequence , obtained the A composite signal , ; Step 3: Combine the composite signals of all K subarrays to obtain the combined signal; Step 4: Process the merged signal through an RF link to obtain a discrete digital signal; Step 5: Input the discrete digital signal into the digital baseband network. In the digital baseband network, multiply the K sets of orthogonal code sequences with the discrete digital signal respectively to obtain the K sets of discrete digital signals. Step 6: Within each complete code length period N, respectively, the first... The discrete digital signals are accumulated to obtain the first group. A new set of discrete sequences is generated, and then each set of discrete digital signals is processed sequentially to obtain K new sets of discrete sequences; Step 7: Process the K new discrete sequences using a hybrid precoding algorithm.

2. The multi-data stream transmission method based on a multi-domain modulation array structure according to claim 1, characterized in that, Step one specifically involves: in, For the first The weighted composite signal of each subarray , The total number of subarrays, is the base of the natural logarithm. The imaginary unit, The wavelength of an electromagnetic wave Indicates the first The first of the sub-arrays The weighted values ​​of the array elements, Indicates the first The first in the formation The distance between the first element of the first array and the first element of the first subarray. Indicates the first The number of array elements in each subarray. For incident signal The incident angle relative to each subarray.

3. The multi-data stream transmission method based on a multi-domain modulation array structure according to claim 2, characterized in that, The specific process of step two is as follows: in, It consists of K sets of orthogonal code sequences.

4. The multi-data stream transmission method based on a multi-domain modulation array structure according to claim 3, characterized in that, The K sets of orthogonal code sequences are m sequences.

5. A multi-data stream transmission method based on a multi-domain modulation array structure according to claim 3, characterized in that, The K sets of orthogonal code sequences are gold sequences.

6. A multi-data stream transmission method based on a multi-domain modulation array structure according to claim 3, characterized in that, The specific process of step three is as follows: in, This is the merged signal.

7. A multi-data stream transmission method based on a multi-domain modulation array structure according to claim 6, characterized in that, The specific process of step five is as follows: in, For the obtained first The first group of discrete digital signals A data symbol, For the first The first group of orthogonal code sequences A data symbol, The first in discrete digital signals Data symbols.

8. A multi-data stream transmission method based on a multi-domain modulation array structure according to claim 7, characterized in that, The specific process of step six is ​​as follows: in, For the first The first in a new discrete sequence Data symbols.

9. A computer storage medium, characterized in that, The storage medium stores at least one instruction, which is loaded and executed by a processor to implement the multi-data stream transmission method based on a multi-domain modulation array structure as described in any one of claims 1 to 8.

10. A multi-data stream transmission device based on a multi-domain modulation array structure, characterized in that, The device includes a processor and a memory, the memory storing at least one instruction, which is loaded and executed by the processor to implement the multi-data stream transmission method based on a multi-domain modulation array structure as described in any one of claims 1 to 8.

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