77results about "Transmission control/equalising" patented technology

Apparatuses, methods, and systems are disclosed for calculating an EVM of a transmitter. One apparatus includes a processor and a receiver that receives a multiple-layer MIMO signal from a transmitter via a propagation channel. The processor measures the received multiple-layer MIMO signal using an unbiased linear MMSE MIMO equalizer and calculates an EVM of the transmitter, where the EVM for each transmission layer is calculated as 100 times the square root of the mean square error of the layer estimate at the output of the unbiased linear MMSE MIMO equalizer.

The objective of the present invention is to provide a wireless communication system that can implement compensation for wireless signals without distinguishing faults in the wireless signals by type. A wireless communication system according to the present disclosure comprises a transmitting station that transmits wireless signals and a receiving station that receives the wireless signals. The receiving station has a compensation circuit that includes a learning model. The receiving station is configured to execute: a process of using the learning model to process input signals and generate output signals, the input signals including received signals at the receiving station that originate from known bit sequences transmitted from the transmitting station; a process of training the learning model such that the output signals approach supervisory data comprising the known bit sequences; and a process of performing processing on a newly inputted input signal on the basis of the trained learning model to output an improved output signal.

The application belongs to the technical field of electric communication, and particularly relates to digital communication, and especially relates to a multi-source data communication system and a communication method, which comprises a general control and a plurality of preprocessing devices; the preprocessing device is connected with a corresponding device, and the device is simultaneously connected with other preprocessing devices; the preprocessing device is configured to receive waveform data sent by the corresponding device, and send peak data in the waveform data to the general control; the general control is configured to mark a preprocessing device to be adjusted when the preprocessing device cannot identify peak data from the waveform data sent by the corresponding device, then the general control controls the remaining preprocessing devices to receive real-time waveform data sent by the device corresponding to the preprocessing device to be adjusted, and the general control adjusts the preprocessing device to be adjusted according to the real-time waveform data, thereby removing a high-precision conversion module and reducing cost.

An O-DU and O-RU in a cellular communication network negotiate frequency resolution to perform equalization and beamforming over the same subcarrier. In one example embodiment, the O-DU sends a message to the O-RU requesting subcarrier information used for performing a beamforming function in the O-RU. The O-DU receives the subcarrier information from the O- RU. The O-DU then uses the subcarrier information received from the O-RU to perform an equalization function.

A control device according to the present disclosure is provided with a control unit. The control unit virtually generates a communication environment for communication conducted between a first communication device and a second communication device via a third communication device. The control unit determines control information, for controlling the third communication device, on the basis of the virtual communication environment. The control unit transmits the control information to the third communication device.

In a general aspect, a communication system comprises a first station and a second station. Each station includes a transceiver and a control subsystem. The transceiver includes having one or more photonic crystal masers and one or more photonic crystal receivers. The control subsystem includes one or more lasers optically coupled to the one or more photonic crystal masers and the one or more photonic crystal receivers. The control subsystem also includes modulation electronics in communication with the one or more lasers and configured to control one or more properties of a first input optical signal received by each photonic crystal maser. The control subsystem additionally includes demodulation electronics in communication with the one or more lasers and configured to control one or more properties of a second input optical signal received by each photonic crystal receiver.

The present disclosure proposes a method for getting a binary sequence representing the sampling of an underlying binary code sequence. The proposed approach builds the target sequence by concatenating sets of samples taken from another reference sequence representing the sampling of the same underlying code but at different sampling rate and / or initial phase than the target sequence. The main idea is that both the target and the reference sequences share sets of samples that are common, sample by sample, in both sequences, so that such sets of samples can be reused to build the target sequence, and, at each transition between sets, one or several reference samples must be either duplicated or discarded. The present disclosure explains how to compute the indexes of those common sets and shows how the samples at the transitions need to be managed. The main advantage of this approach is to allow computational savings.

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). The present disclosure relates to the field of a wireless communication system. More particularly, the present disclosure relates to method, apparatus(or device) and system for restricting channel estimation in the time domain for downlink transmission in a wireless communication system. A main technical result consists in enabling more flexible MU-MIMO scheduling in the time domain, including capabilities for more flexible channel estimation restrictions in the time domain, which ultimately leads to improved communication performance between the BS and the UE. Base station - implemented method of communication with one or more user equipments, the method comprising: defining possible values of a parameter of time interval of channel estimation performed by one or more UEs using one or more demodulation reference signals (DMRSs) for receiving a physical downlink shared channel (PDSCH); transmitting, using downlink control information (DCI) signaling, to the one or more UEs an indication of a scheduled PDSCH transmission and an indication of a to-be-applied value of said parameter from among the possible values of the parameter; and performing the scheduled PDSCH transmission to the one or more UEs.

A method (100) for determining operating parameters (vk*, u*) a pre-encoder phase and a combiner phase of a transmitter (500) or a receiver (600) configured for over-the-air computing, includes determining (130) a first combiner (u (0) ) based on an aggregated channel matrix (H) containing all channel vectors (h k )) of all transmitters (500). The procedure further includes the iterative refinement (101) of the combiner ( U (i i) ), until a termination criterion is met, resulting in an optimized combiner (u*). Based on the previously optimized combiner (u*), optimized precoder parameters are calculated. (vk * ) calculated for all transmitters (500) (190), while ensuring that the square (|v k | 2 ) the precoding scalar of each transmitter (500) does not exceed a predetermined power value (P).

Provided are backscatter communication method, apparatus and device, and a storage medium. The backscatter communication method applied to a first communication node includes: (S110) determining a target position situation used to carry first information, and (S120) performing backscatter communication according to the target position situation.

Methods and systems for orthogonal time frequency space (OTFS) communication using predefined basis signals are described. An example digital communication method includes receiving a signal over a communication channel, determining an estimate of the communication channel from one or more pilot symbols in the signal transmission. Herein the one or more pilot symbols are assigned along a delay-Doppler resource grid. The method further includes equalizing non-pilot symbols in the signal transmission by rotating the estimate of the communication channel according to grid locations of the one or more pilot symbols along the delay-Doppler resource grid at other grid locations, and recovering data bits from the equalized non-pilot symbols.

Apparatuses, methods, and systems for computing an EVM of a transmitter are disclosed. One apparatus includes a processor and a receiver that receives a multi-layer MIMO signal from a transmitter via a propagation channel. The processor measures the received multi-layer MIMO signal using an unbiased linear MMSE MIMO equalizer and computes an EVM of the transmitter, where the EVM of each transmission layer is computed as 100 times the square root of a mean square error of a layer estimate at an output of the unbiased linear MMSE MIMO equalizer.

This invention discloses a radar-communication integrated antenna beam coordination optimization method and system based on big data, belonging to the field of radar communication technology. The method includes the following steps: acquiring electromagnetic energy distribution signals, target motion trajectory signals, and communication signal power timing signals during rapid changes in the target scene; expanding these three types of real-time signals under a unified time reference to establish a dynamic characteristic basis reflecting beam response lag; and continuously analyzing the time misalignment relationship between radar echo energy change signals and communication power timing signals based on the established dynamic characteristic basis. This invention restores the master-slave correspondence between radar transmission and echo sampling through time reference unification and timing coordination adjustment, reducing energy misalignment and detection distortion in dynamic scenarios. Furthermore, by allocating communication power in a segmented timing sequence, it achieves staggered release of radar and communication energy, reducing mutual interference and improving the overall sensing and transmission stability in complex electromagnetic environments.

Apparatuses, methods, and systems are disclosed for calculating an EVM of a transmitter. One apparatus (600) includes a processor (605) and a receiver (635) that receives (905) a signal (210) via a propagation channel from an antenna port (207) at a transmitter (205), the antenna port (207) comprising multiple antennas and with an antenna connector for each antenna. The processor (605) measures (910) the received signal (210) using an unbiased linear MMSE equalizer (230) and calculates (915) an EVM of the antenna port, where the EVM is calculated as 100 times the square root of the mean square error of the symbol estimate at the output of the unbiased linear MMSE equalizer (230).

A method for operating a wireless ecosystem involves connecting electronic devices, each containing a wireless communication module, to a wireless hub and querying the electronic devices with incremental variations of the wireless hub's transmission power to determine a reduced hub transmission power sufficient for communication with the multitude of electronic devices. The method also involves providing each of the electronic devices with an allocated wireless transmission power for communication with the wireless hub and transmitting the allocated wireless transmission power from the wireless hub to each of the electronic devices for communication with the wireless hub.

This equalization device: executes equalization processing which is processing for equalizing an input signal and generating an output signal, error calculation processing for calculating the difference between the output signal and a symbol determination signal based on the input signal, and outlier determination processing for determining, on the basis of the absolute value of the difference and a prescribed threshold, whether or not the input signal is an outlier; and does not update a tap coefficient in the equalization processing when it is determined that the input signal is an outlier in the outlier determination processing.

The application discloses a radio frequency unit power control method, electronic equipment and storage medium, and belongs to the communication technical field.The method comprises the following steps: acquiring utilization state information of a unit channel of a radio frequency unit; and adjusting a current switch state of the unit channel to a target switch state according to the utilization state information.The technical scheme of the application adjusts the current switch state of the unit channel of the radio frequency unit to the target switch state according to the utilization state information by acquiring the utilization state information of the unit channel of the radio frequency unit, so that the switch state of the unit channel of the radio frequency unit is adaptively adjusted according to the utilization state information of the unit channel, the user experience is not affected, and the effect of saving energy and reducing consumption of the radio frequency unit is achieved.

Disclosed is an analog equalizer network apparatus for wideband LOS-MIMO processing, the apparatus according to an embodiment including: a power distributor configured to distribute a first input signal received through a receiving antenna of a wideband LoS-MIMO network to a first path from a first input terminal to a first output terminal, and distribute a second input signal received through the receiving antenna to a second path from a second input terminal to the first output terminal; a first delay line located on the first path, and configured to delay the first input signal distributed to the first path; a second phase shifter located on the second path and configured to shift a phase of the second input signal distributed to the second path; and a power combiner configured to combine the delayed first input signal and the phase-shifted second input signal to perform channel separation.

A communication apparatus performs to: receive, from a transmitter, a backoff change amount indicating an amount by which a backoff amount of the transmitter has changed from a reference value, and a transmission signal transmitted by the transmitter; and compensate for distortion of the transmission signal using a compensation model for use in processing to compensate for the distortion of the transmission signal transmitted from the transmitter, the compensation model being determined based on the backoff change amount.

To provide a wireless communication system that can eliminate interference waves that go around from the transmitting antenna of its own station to the receiving antenna of its own station with high accuracy.SOLUTION: In a wireless communication system, a transmitting device includes a PA replica generation unit 5c that generates a replica signal of a PA from a portion of an output signal from a PA 54, and a receiving device includes a subtractor 59 that subtracts a replica signal of an interference wave from a received signal from a receiving antenna 58, and an interference replica generation unit 5d that generates the replica signal of the interference wave so as to minimize a residual component included in the signal subtracted by the subtractor 59 with the replica signal of the PA as a reference signal.SELECTED DRAWING: Figure 1

A method (100) for determining operating parameters (vk*, u*) a pre-encoder phase and a combiner phase of a transmitter (500) or a receiver (600) configured for over-the-air computing, includes determining (130) a first combiner (u (0) ) based on an aggregated channel matrix (H) containing all channel vectors (h k ) of all transmitters (500)). The procedure further includes the iterative refinement (101) of the combiner (u (i i) by minimizing the square of the Euclidean vector norm of the combiner (||u|| 2 ), until a termination criterion is met, resulting in an optimized combiner (u*). Based on the previously optimized combiner (u*), optimized precoder parameters are calculated. (vk * ) calculated for all transmitters (500) (190), while ensuring that the square (|v k | 2) the precoding scalar of each transmitter (500) does not exceed a predetermined power value (P).

To achieve desired performance, a data reception device comprises receiving unit and an adaptive equalization processing unit. The receiving unit generates a received signal based on a first wireless signal received by a first antenna and a second wireless signal received by a second antenna. The adaptive equalization processing unit performs adaptive equalization processing to asymptotically match the received signal based on the first wireless signal and the second wireless signal generated by the receiving unit to a predetermined training signal.

Device for a radio frequency communication system of a first object, the device comprising at least one transmission chain (5), said chain comprising at least successively: A digital modulator (7), A communication interface (9) intended for communicating in operation by radio frequency with at least one second object located at a distance from the first object, said interface comprising at least successively a radio frequency transmitter (11) and a radio frequency filter (12). Furthermore, the device comprises a digital precorrection module (8) arranged between the digital modulator (7) and the communication interface (9), the digital precorrection module comprising at least one finite impulse response filter (13) defined from at least one characteristic of the radio frequency filter. FIGURE IN ABRIDGED DIAGRAM: Fig. 2

Receiving device which features: an equalization processor (20) comprising several time-of-flight equalizers (21, 22) which each receive several received signals through an array antenna (11, 12), and which performs equalization processing of spatial equalization and temporal equalization on the received signals, wherein the equalization processor (20) is configured as a: Gaining a first error (e1), which is a difference between an output of a specific tap (TAP_p) in the multiple runtime equalizers (21, 22) and a given reference value (Target), and calculating a first weight (W1) with which the first error (e1) is minimized; Causing a calculation result of the first weighting (W1) to be reflected in all taps (TAP_1 to TAP_n) in the multiple runtime equalizers (21, 22) except for the specific tap (TAP_p), gaining a second error (e2) which is a difference between outputs of all taps (TAP_1 to TAP_n) in the multiple runtime equalizers (21, 22) and the specified reference value (target), and calculating a second weighting (W2) with which the second error (e2) is minimized; and Updating coefficients of all taps (TAP_1 to TAP_n) in the multiple runtime equalizers (21, 22) at the same time using the calculation result of the first weighting (W1) and a calculation result of the second weighting (W2) and calculating an output of the equalization processor (20).

According to an embodiment, a device includes an interface configured to receive a first clock signal. A delay circuit is configured to add variable delays to the first clock signal based on a delay control signal to generate a second clock signal with variable delays. A delay control signal is generated by a controller clocked by the second clock signal. The device further includes a radio frequency path, and the device is configured to control the radio frequency path based on the second clock signal.

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, a user equipment (110) comprises a receiver (111) configured to receive a primary synchronization signal, and a unit (112) configured to identify one of a plurality of primary communication signals corresponding to a communication cell location of the receiver, wherein at least two of a group of multiple sequences have complex conjugate symmetry in the time domain. In another embodiment a corresponding method of operating a receiver in a user equipment (110) is provided.

The embodiment of the invention discloses a data balance optimization method and device based on multi-satellite collaboration. A specific embodiment of the method comprises the following steps: selecting a satellite with a maximum local training data set as an optimized satellite; selecting adjacent satellites of the optimized satellites for data unloading according to the data size between the satellites and the class label difference; establishing a constraint objective function between the optimized satellite and the adjacent satellite, solving the constraint objective function, and determining a target data unloading proportion of the optimized satellite; and performing data unloading between the optimized satellite and the adjacent satellite according to the target data unloading proportion. According to the embodiment, through multi-satellite collaborative data unloading, the training burden of satellites with relatively large data volume is reduced.

This device provides a communication device that enables wireless communication that is less prone to disconnection even in the 5.6GHz band through DFS (Dynamic Frequency Selection). [Solution] The communication device according to the present invention comprises a pair of communication antennas A1 and A2 capable of wireless communication, a line redundancy device Rx connected to one of the pair of communication antennas A1 and A2, and a line redundancy device Ry connected to the other of the pair of communication antennas A1 and A2. With the wireless connection of the pair of communication antennas A1 and A2 established on different channels in the 5.6GHz band, under normal circumstances, wireless communication is performed using one pair of communication antennas, and when radar is detected on that channel, the device switches to performing wireless communication using the other pair of communication antennas.