113results about "Multiplex communication" patented technology

To provide an access point device, a station device, and a communication method that achieve highly accurate beamforming in a high frequency band.SOLUTION: A first sub-access point device 20000-2 and a second sub-access point device 20000-3 are access point devices that communicate with a station device using a first link 11-10 and a second link 11-11, and include a transmitting unit that transmits a first frame 11-1 through the first link and a receiving unit that receives a response frame 11-2 through the second link. The first frame is a frame that requests the response frame, and the receiving unit performs carrier sense to secure a wireless medium in the second link before the transmitting unit finishes transmitting the first frame through the first link.SELECTED DRAWING: Figure 11

To provide a receiver and a reception method capable of improving reception performance with high layer separation accuracy, while reducing reception processing in a Layered Division Multiplexing (LDM) system.SOLUTION: A receiver 20 in an LDM system of the invention includes: an orthogonal demodulation part 22 for extracting an LDM symbol by receiving an LDM signal and performing orthogonal demodulation for it; an LLR calculation part 23 for UL for calculating a Log-likelihood ratio (LLR) with assuming the received LDM symbol as UL; an error correction decoding part 24 for UL for performing decoding processing for a UL signal indicating the LLR; a reference point determination part 25R for narrowing down reference points indicating possible symbol positions which can be taken by symbols for LL within the received LDM symbols based on decoding results of the UL signals; an LLR calculation part 27R for LL for calculating an LLR for the received LDM symbol corresponding to the UL signal based only on the reference point determined by the reference point determination part 25R; and an error correction decoding part 28 for LL for performing decoding processing for an LL signal indicating the LLR.SELECTED DRAWING: Figure 1

A wireless communication and sensing method including: performing, by a wireless communication and sensing node, a communication function of an integrated sensing and communication (ISAC) signal through one or more communication antennas; and performing, by the wireless communication and sensing node, a sensing function of the ISAC signal through one or more communication antennas and one or more dedicated sensing antennas.

The information expression capability of radio waves is increased by using information expression based on an orthogonal basis with a high degree of freedom that allows for a large number of combinations. [Solution] The system includes a radio wave signal acquisition unit (11) that acquires the complex signal of the received electric field for each element of the array antenna as a received radio wave signal, an orthogonal basis expansion unit (12) that calculates two or more orthogonal basis components from the received radio wave signal, a reference structure acquisition unit (13) that acquires reference structure information used for modulation by the geometric structure of the radio waves, and a restructuring calculation unit (14) that uses the orthogonal basis components and the reference structure information to calculate the elevation angle, azimuth angle, and radius on a sphere (20) with the first orthogonal basis and the second orthogonal basis as poles to represent the geometric structure of the radio waves as a restructured geometric structure, and the orthogonal basis components include orbital angular momentum components.

The invention relates to a field device for process automation. A control unit (4) for transmitting electrical signals between an electronic unit (3) and an antenna connection (2) has a switch (40) with signal interfaces (J1, J2, J3), exactly one antenna signal interface (410), and a control interface (V1, V2). Depending on the activation of the control interface (V1, V2), the signal interfaces (J1, J2, J3) are connected to the antenna signal interface (410).

METHOD FOR SECURE SELF-ADDRESSING OF SLAVE DEVICES IN A LIN NETWORK The present invention relates to a method for configuring at least one slave device by a master device on a multiplexed LIN communication network, comprising the steps: a) sending a configuration instruction from the master device to the slave device; notable in that the method further comprises the step: b) sending a configuration acceptance signal from the slave device to the master device; c) if step b fails, iteration of steps a) and b) until the first of the following two conditions is met: reaching a maximum number of iterations and completion of step b). (Figure to be published with the abbreviation: Figure 2)

To provide a transmitting station and a receiving station capable of switching between OTFS modulation and OFDM modulation in accordance with a Doppler frequency effect.SOLUTION: A transmitting station which wirelessly communicates with a receiving station on a predetermined carrier frequency includes: orthogonal frequency division multiplexing means for performing orthogonal frequency division multiplexing on a symbol sequence; orthogonal time frequency space multiplexing means for performing orthogonal time frequency space multiplexing on a symbol sequence; switching means for switching so as to input a symbol sequence in which a bit stream has been mapped into only one of the orthogonal frequency division multiplexing means and the orthogonal time frequency space multiplexing means; moving speed acquiring means for acquiring a relative moving speed with respect to the receiving station; switch controlling means for controlling the switching means on the basis of the moving speed; and switch notifying means for transmitting a switch notification as a control signal to the receiving station when the switching means is controlled.SELECTED DRAWING: Figure 2

To provide a signal estimation device capable of reducing an amount of calculation required to estimate a transmission signal on the basis of a reception signal.SOLUTION: A signal estimation device (211) includes conversion means (211) that performs discrete Fourier transform processing on M×N reception signal components included in a reception signal (y) in units of N reception signal components, and estimation means (212) that estimates an estimated signal (xe) including M×N estimation signal components, which is an estimated value of M×N transmission signal components, on the basis of the reception signal subjected to the discrete Fourier transform processing, and when an estimated signal is newly estimated, the estimation means performs exclusion operation in which estimated values (xe(k)) of the M transmission signal components that make up a k-th transmission signal group from the newly estimated signal xe (where k is a variable indicating an integer greater than or equal to 0 and less than or equal to N-1) are excluded, and estimates again, the estimated signal (xe) by updating the estimated value (xe(k)) on the basis of an intermediate signal (xt(k)) obtained by the exclusion operation and the reception signal y.SELECTED DRAWING: Figure 6

The invention relates to the technical field of wireless communication, in particular to a wireless audio transmission method, device, system and equipment and a storage medium. In the invention, through flexible link coexistence (frequency division / time division multiplexing) and a dynamic enabling control mechanism, intelligent distribution and optimization of transmission resources of the first peripheral equipment and the second peripheral equipment in the connection isochronous flow link group are realized. According to the invention, the system can adaptively select the multiplexing mode according to the actual transmission demand and the channel condition, and combines the repeated transmission strategy, thereby effectively improving the reliability of wireless audio transmission, reducing the time delay, and better adapting to the dynamic change of the wireless channel, thereby remarkably optimizing the overall performance of the dual-device or multi-device cooperative audio transmission.

Provided is a spatial sensing method in a communication system including a transmission device and a reception device, wherein the transmission device transmits at least two OAM mode signals of different frequencies simultaneously, and on the basis of the fluctuation of the received power of the signals measured by the reception device, detects an obstacle in a space between the transmission device and the reception device.

The present application relates to methods and apparatuses for resource multiplexing. One embodiment of the present disclosure provides a method, comprising: receiving a first signaling via a first link, wherein the first signaling indicates a first time domain resource configuration of at least one multiplexing mode for the first link and a second link, and wherein the at least one multiplexing mode includes at least one of the following multiplexing mode: downlink transmission on the first link and uplink transmission on the second link via a frequency-division multiplexing mode (FDM); downlink transmission on the first link and uplink transmission on the second link via a space division multiplexing mode (SDM); downlink reception on the first link and uplink reception on the second link via the FDM; downlink reception on the first link and uplink reception on the second link via the SDM; uplink transmission on the first link and uplink reception on the second link via the FDM; uplink transmission on the first link and uplink reception on the second link via the SDM; downlink reception on the first link and downlink transmission on the second link via the FDM; downlink reception on the first link and downlink transmission on the second link via the SDM; a time-division multiplexing mode (TDM); a flexible multiplexing mode; and determining time domain resources associated with each multiplexing mode of the at least one multiplexing mode based on the first time domain resource configuration.

Aspects of the present disclosure relate to a formula-based inter-circle precoding weight determination for an orbital angular momentum (OAM) communication system. Some aspects of the present disclosure relate to an apparatus and method for wireless communication, the apparatus including a processor, an antenna element including a first subset and a second subset of the antenna elements, and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the processor to transmit a first reference signal using a first OAM mode via the first subset of the antenna elements, transmit a second reference signal using the first OAM mode via the second subset of the antenna elements, and receive information indicating a subset of antenna elements of the plurality of antenna elements to use to transmit the first OAM mode. Other aspects, embodiments, and features are also claimed and described.

The purpose of the present disclosure is to perform coordinated communication on the basis of rate splitting in a wireless communication system, and a method performed by a first terminal in a wireless communication system may comprise the steps of: acquiring system information; performing an initial access procedure with a first base station on the basis of the system information; receiving configuration information on channel measurement; performing a channel measurement procedure on the basis of the configuration information on the channel measurement; receiving a first data signal from the first base station; and receiving a second data signal from a second base station.

Efficient encoding techniques are described for encoding resource allocation data to be signalled to a user device. In one encoding technique one or more frequency blocks are assigned to a user device and a plurality of resource blocks within the assigned frequency blocks are allocated to the user device. The assignment of frequency blocks and the resource block allocation are encoded separately and signalled to the user device. On receipt of the signalled information the user device interprets the frequency block assignment and uses this when interpreting the resource block allocation.

To provide a broadcasting system capable of applying an optimum multiplexing method according to a service requirement condition.SOLUTION: A transmitter 100 to be used in a broadcasting system 1 for performing hierarchical transfer comprises: multiplexing means 103 for multiplexing signals in a plurality of layers associated with different services, respectively; and transmission means 104 for transmitting multiplex signals multiplexed by the multiplexing means 103. The multiplexing means 103 includes: FDM means 103a for multiplexing signals in two or more hierarchies of the plurality of layers using FDM in a transmission band of one channel; and TDM means 103b for multiplexing signals in two or more hierarchies of the plurality of layers using time division multiplexing in one frame.SELECTED DRAWING: Figure 3

The objective is to provide an OAM radio wave transmission and reception system without increasing the size of the equipment by acquiring OAM radio wave information through localized measurement of OAM radio waves. [Solution] A radio wave generating device comprising a control unit and a radio wave transmitting unit, wherein the control unit includes an OAM radio wave information setting unit that generates a transmitted radio wave signal based on the OAM mode order, a phase change unit that linearly changes the phase of the transmitted radio wave signal with respect to time according to the OAM mode order, and a complex signal generating unit that generates a complex signal from the transmitted radio wave signal whose phase has been changed by the phase change unit and a reference signal, and the radio wave transmitting unit includes a complex signal conversion unit that decomposes the signal components of the complex signal into a real part and an imaginary part, a radio processing unit that generates a radio signal from the complex signal decomposed into a real part and an imaginary part, and an array antenna that transmits the radio signal as an OAM radio wave.

A transmitter includes a control unit configured to allocate zero power resources in a first signal in a time-frequency domain; and a transmission unit configured to non-orthogonally multiplex the first signal and a second signal and transmit the multiplexed signal, wherein the transmission unit is configured to transmit, in the resources in which the zero power resources are allocated, all of at least one repeated transmission among a plurality of repeated transmissions included in the second signal.

This wireless communication system comprises a transmission device that transmits an OAM multiplexing signal and a reception device that receives the OAM multiplexing signal. The reception device performs channel estimation of each OAM mode on the basis of a preamble transmitted from the transmission device, and selects, on the basis of the channel estimation result, a combination of the OAM modes for use in transmission in the transmission device so as to maximize the communication capacity.

This provides MIMO signal estimation and filter coefficient optimization. [Means] The system comprises D multi-input single-output (MISO) filters and D interference rejection filters. The multiple received signal sequences are the first D received signal sequences. Each of the ith (i is an integer between 1 and D) MISO filters in the D MISO filters receives the ith D received signal sequences as input and estimates the ith single transmitted signal sequence in the D transmitted signal sequences. Each of the ith interference rejection filters in the D interference rejection filters receives a signal obtained by transforming the ith single estimated transmitted signal sequence, which is the estimated result of the ith single transmitted signal sequence, through phase correction and noise correction processing, along with the ith D received signal sequences as input. The filter removes interference signals contained in the ith D received signal sequences and outputs the i+1th D received signal sequences, estimating D transmitted signal sequences including the ith single transmitted signal sequence.

To provide a technique for more suitably transmitting or receiving an advanced digital broadcasting service.SOLUTION: A method includes a transmission step of transmitting a first transmission wave in a first polarization direction and transmitting a second transmission wave in a second polarization direction different from the first polarization direction, a reception step of receiving the first transmission wave and the second transmission wave, and a layer identification step of identifying the layers included in the first transmission wave and the second transmission wave. In each of the first transmission wave and the second transmission wave, a predetermined bandwidth is divided into a predetermined number of segments, and in the layer identification step, a segment group having the same segment number as the segment belonging to the predetermined layer transmitted by the first transmission wave in the first polarization direction from among the segments transmitted by the second transmission wave in the second polarization direction is configured such that identification information that can be identified as a layer different from the predetermined layer is stored in the second transmission wave.SELECTED DRAWING: Figure 2A

To make it possible to ensure, when terminals transmit signals to two respective base stations, an appropriate reception power difference between the terminals in each base station.SOLUTION: There is provided a transmission power control method for a terminal capable of transmitting a first signal received by a first base station and a second signal received by a second base station by power-domain non-orthogonal multiple access. In a case where reception power is divided into at least two ranks at equal intervals, each of the at least two ranks has an allowable variation range having an identical size, a margin is defined between a lower limit of the allowable variation range in an upper rank and an upper limit of the allowable variation range in a lower rank in the at least two ranks, and where a size of the allowable variation range is equal to or larger than a size of the margin, the terminal adjusts transmission power of the first signal and the second signal by using a transmission power adjustment amount calculated such that reception power of the first signal and reception power of the second signal fall within the allowable variation range of any of the at least two ranks by using the reception power of the first signal, the reception power of the second signal, a reception power difference therebetween, the at least two ranks, the allowable variation range, and the margin.SELECTED DRAWING: Figure 13

To provide a method capable of increasing transmission capacity by implementing the method in combination with a current service.SOLUTION: A transmitting device, which is one aspect of the present disclosure, includes: a TMCC signal generation unit 5091 that generates a parameter for identifying a broadcasting system and provided in a TMCC signal; and a transmitting unit that transmits a signal to be broadcast and the TMCC signal. When the TMCC signal generation unit 5091 sets the parameter to a first value indicating a first broadcasting system, the transmitting unit transmits a signal generated by an LDM method in which a signal of the first broadcasting system is set as a UL signal and a signal of a second broadcasting system is set as an LL signal. When the TMCC signal generation unit 5091 sets the parameter to a second value indicating the second broadcasting system introduced after the first broadcasting system, the transmitting unit transmits only the signal of the second broadcasting system.SELECTED DRAWING: Figure 13

A method may use hybrid-TDMA / FDMA frames to synchronize participating nodes to an orchestrator node of a virtual antenna array as the virtual antenna array transmits to a target node. The virtual antenna array is formed by the orchestrator node and the participating nodes. The orchestrator node synchronizes the participating nodes periodically using the hybrid-TDMA / FDMA frames. The virtual antenna array directs joint communications toward and receives communication from the target node. The communication from the target node may be used to learn channel state information (CSI) between the virtual antenna array and the target node. The nodes may include software-defined radios which execute the hybrid-TDMA / FDMA frames. The hybrid-TDMA / FDMA frames may include concurrent transmissions of signal data and metadata. The hybrid-TDMA / FDMA frames may decouple the duty-cycle from the number of nodes.

This transmission device comprises: a signal generation unit for generating signals in -n-th order (n is an integer of 1 or greater) to 0-th order orbital angular momentum modes; a signal transmission unit for transmitting a multiplexed signal obtained by multiplexing the signals in the -n-th order to 0-th order orbital angular momentum modes generated by the signal generation unit; and a phase control unit for performing phase control for increasing, by a prescribed amount, all the orders of the orbital angular momentum mode signals multiplexed into the multiplexed signal transmitted by the signal transmission unit.

A base station device includes a reception point that includes a plurality of antennas, and a control section that selects a plurality of terminals that transmit uplink signals to be received while space-division multiplexed by the plurality of antennas. The control section controls a ratio between a number of first terminals and a number of second terminals in selecting the plurality of terminals, the second terminals being terminals whose rate of the uplink signals is higher than a rate of the uplink signals of the first terminals, the ratio being controlled depending on a target transmit power configured for the first terminals.

To optimize transmission capacity while maintaining transmission quality.SOLUTION: The method comprises: determining whether the required SNR for the current modulation index and roll-off rate is satisfied, and when it is determined that the required SNR is not satisfied, performing the process of lowering the modulation index; calculating transmission capacity that goes through the transmitting amplifier, using each of identified roll-off rates and the SNR, on the basis of the result of determination; and determining an optimum transmission capacity from among the calculated transmission capacities, on the basis of a plurality of PAPR values, while sequentially changing the average transmit power, and determining the roll-off rate at which the optimum transmission capacity is achieved, as a final roll-off rate for the transmitting amplifier.SELECTED DRAWING: Figure 6

A wireless communication system comprising a transmission device provided with a transmission UCA and a reception device provided with a reception UCA, wherein the reception device receives, by the reception UCA, an OAM multiplexed signal transmitted from the transmission device and a MIMO multiplexed signal transmitted from a transmission terminal.

To optimize transmission capacity while maintaining transmission quality.SOLUTION: The method comprises: identifying each roll-off rate using a predetermined relationship table, calculating a degraded SNR equivalent on the basis of the amount that the PAPR of a transmitting amplifier exceeds a backoff and a minimum Euclidean distance, and calculating an SNR for average transmit power; selecting either SC-FTN transmission or Nyquist transmission, using the calculated SNR; when SC-FTN transmission is selected, calculating transmission capacity that goes through the transmitting amplifier, using each of the identified roll-off rates and the SNR; and when SC-FTN transmission is selected, determining an optimum transmission capacity from among the calculated transmission capacities on the basis of a plurality of PAPR values, while sequentially changing the average transmit power, and determining the roll-off rate at which the optimum transmission capacity is achieved, as a final roll-off rate for the transmitting amplifier, and when Nyquist transmission is selected, determining that Nyquist transmission using the transmitting amplifier be performed.SELECTED DRAWING: Figure 6