25 results about "Transmission diversity" patented technology

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure discloses a method and an apparatus for error correction coding in a communication system, more specifically, to error correction coding integrated with transmission diversity.

A wireless transmit receive unit (WTRU) and methods for mitigating narrowband interference on sidelink communications are disclosed. A method performed by the WTRU may include: receiving sidelink control information (SCI) including information indicating at least one alternative transmit resource pool (TxRP) different from the TxRP of the received SCI, and reserving resources on the at least one alternative TxRP according to the information indicated in the SCI. the method may include receiving at least one of a PSCCH transmission or a PSSCH transmission, via the reserved resources, for a Hybrid Automatic Repeat Request HARQ transmission or a HARQ retransmission, and transmitting a PSFCH signal for HARQ feedback on the at least one alternative TxRP or the TxRP of the received SCI.

A terminal is disclosed including a processor and a transmitter. The processor includes, in a UECapabilityInformation message, information indicating whether transmission diversity is supported on a per-band basis. The transmitter transmits, to a base station, the UECapabilityInformation message including the information indicating whether transmission diversity is supported on the per-band basis. In other aspects, a communication method and a radio communication system are also disclosed.

In a system for establishing connectivity in a HF ALE cellular network, stations are organized to sound each channel, synchronized to every other station in the network. All stations make identical sounding transmissions using a single address, synchronized such that the differential timing within the coverage area remains within the mobile radios' delay spread capability. Synchronized soundings allow the mobile radio to consistently connect to the best available channel. The stations may be synchronized via a central control function. Alternatively, the stations may perform soundings based on a predetermined schedule. Where the propagation time to the mobile radio is known, or determinable within some threshold, the stations may apply a delay to the sounding transmissions to ensure that the sounding transmissions from each of the stations reaches the mobile radio at the same time within some acceptable margin.

The invention discloses a low-noise amplification chip and a radio frequency front-end module. The low-noise amplification chip comprises a bare chip, a first amplification module, a second amplification module, a third amplification module and a fourth amplification module, wherein the first amplification module, the second amplification module, the third amplification module and the fourth amplification module are arranged on the bare chip and sequentially arranged in the first direction. The first amplification module and the third amplification module are configured to receive a radio frequency signal of a first communication frequency band; one of the first amplification module and the third amplification module is configured to transmit a master reception signal, and the other is configured to transmit a diversity reception signal. The second amplification module and the fourth amplification module are configured to receive a radio frequency signal of a second communication frequency band; one of the second amplification module and the fourth amplification module is configured to transmit a master reception signal, and the other is configured to transmit a diversity reception signal. The isolation degree of the low-noise amplification chip can be improved, and then the overall performance and the working reliability of the low-noise amplification chip are guaranteed.

A wireless transmit receive unit (WTRU) and methods are disclosed for mitigating narrowband interference on sidelink communications. The method may include: receiving, at a WTRU, SCI, the SCI including information indicating at least one alternative TxRP different from the TxRP used for SCI is transmission, reserving, at the WTRU, resources on the at least one alternative TxRP according to the information indicated by the received SCI; and transmitting, by the WRTU, at least one of: a PSCCH, and a PSSCH, alone or in combination, via the reserved resources for a Hybrid Automatic Repeat Request HARQ transmission or HARQ retransmission, or a PSFCH for HARQ feedback, on the at least one alternative TxRP. The method may also include determining a rank of PSSCH transmission based on a CSI-RS, determining to apply PSSCH layer aggregation according to a channel quality when the determined rank is greater than 1.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a first physical channel associated with analog channel state information (CSI), wherein the configuration for the first physical channel includes a configuration for applying a rate matching technique or a transmission diversity technique to the first physical channel. The UE may receive a configuration for a second physical channel associated with digital CSI. The UE may transmit, via the first physical channel, an analog component of a CSI report in accordance with the configuration for the first physical channel associated with the analog CSI. The UE may transmit, via the second physical channel, a digital component of the CSI report in accordance with the configuration for the second physical channel associated with the digital CSI. Numerous other aspects are described.

The invention discloses an anti-machine learning attack strong PUF circuit based on a delay deviation screening strategy, which comprises n delay modules, n-1 interconnection modules, an arbiter array and an exclusive-OR gate, n is an integer greater than or equal to 1, each delay module is realized based on a deviation source structure, n-1 is an integer greater than or equal to 1, n-1 is an integer greater than or equal to 1, n-1 is an integer greater than or equal to 1, and n-1 is an integer greater than or equal to 1. The deviation source structure characteristic of the delay module can increase the number of transmission paths of input signals at the deviation source structure characteristic, and transmission diversity is achieved, so that the mapping relation between excitation and response can have high complexity and unpredictability without arranging multiple strong PUFs. Meanwhile, transmission characteristics (namely transmission paths) of input signals can be further disrupted by using an interconnection module, and in addition, response output is generated by using an exclusive-OR gate, so that the stability is further improved; the method has the advantages of being high in machine learning attack resistance, low in hardware overhead and high in stability.

Example embodiments relate to techniques for implementing radar waveform diversity. A technique may involve a radar unit transmitting radar signals into an environment of a vehicle based on a code sequence that indicates a ramp direction and a phase shift for each pulse in a pulse used by the radar unit and receiving radar reflections from the environment. In some instances, the radar unit may leverage antennas in a multiple input multiple output (MIMO) arrangement to further add diversity to transmissions according to spatial code in the code sequence. The technique can further involve using a demodulator to map the environment based on the radar reflections and controlling the vehicle based on the mapping. In some instances, the code sequence is received from a system that is wirelessly providing orthogonal code sequences to multiple emitters.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver mobile station may receive at least one sidelink signal. The receiver mobile station may transmit an indication of a requested transmission diversity scheme, of a plurality of transmission diversity schemes, based at least in part on the at least one sidelink signal. Numerous other aspects are described.

The present application relates to the technical field of communications, and discloses a diversity transmission method, a terminal, and a network side device. The diversity transmission method in embodiments of the present application comprises: a terminal acquires a configuration parameter of a transmit diversity; and the terminal receives, on the basis of first indication information or a predefined rule and according to the configuration parameter of the transmit diversity, a signal sent by a network side device.

A method, apparatus and computer program product are provided for conveying information regarding the antenna configuration and / or the transmission diversity scheme to a recipient, such as a mobile device. In particular, information regarding the antenna configuration and / or the transmission diversity scheme can be conveyed by appropriately mapping a physical broadcast channel within a sub-frame so as to include reference signals indicative of different antenna configurations or transmission diversity schemes. Alternatively, masking, such as cyclic redundancy check masking, can be used to provide information regarding the antenna configuration and / or the transmission diversity scheme.

A method of transmission of a set of I bits of information stream is described, in which said method comprises: selecting, from a pool of at least 2I matrices, a matrix to uniquely represent the set of I bits of information stream, wherein each matrix of the pool is a set of M vectors, and each vector is of length D; and transmitting a resource block across M transmit antennas, wherein respective vectors of the M vectors are transmitted on respective transmit antennas of the M transmit antennas. The transmitting comprises mapping respective entries of the respective vectors to respective resource elements of the resource block.

The application discloses a time synchronization method, device and equipment of a dual-antenna transmission diversity, and relates to the field of dual-antenna transmission diversity. The method comprises the following steps: at a sending end, performing frequency domain CDD processing on one of two space-time streams, and adding a synchronization header to the two space-time streams, wherein the synchronization header comprises a long preamble formed by a 512-point M sequence, and the number of delay samples of the long preamble CDD processing is 256; at a receiving end, using a sliding search window with a value of 768 to obtain the time of three correlation peaks generated by the long preamble as a time synchronization point for time synchronization. The application can ensure that the second expected correct peak value is the highest in any complex multipath scenario, thereby avoiding synchronization errors in the complex multipath scenario and avoiding demodulation failure.

The present invention discloses a data transmission method, device, readable storage medium and electronic device. The method comprises: based on at least one of the first parameter set, the second parameter set and the third parameter set corresponding to the data to be transmitted, selecting a target receiving equalization mode from multiple candidate receiving equalization modes, wherein the data to be transmitted is data transmitted using the transmit diversity technology, the first parameter set is used to characterize the channel characteristics of the baseband transmission channel corresponding to the data to be transmitted, the second parameter set is used to characterize the channel estimation result of the previous transmission channel corresponding to the data to be transmitted, and the third parameter set is used to characterize the transmission mode corresponding to the data to be transmitted; the data to be transmitted is transmitted according to the target receiving equalization mode. The present invention solves the technical problem that the data transmission method provided by the related art has poor flexibility.

The invention discloses a diversity transmission method, a terminal and network side equipment, and belongs to the technical field of communication, and the diversity transmission method comprises the steps that the terminal obtains configuration parameters of transmission diversity; and the terminal receives a signal sent by network side equipment according to the configuration parameter of the transmission diversity based on first indication information or a predefined rule.

The present invention relates to an optoelectronic hybrid combined high-frequency signal transmission slip ring for radar. The slip ring comprises an electric slip ring assembly, a fiber optic slip ring assembly, and a high-frequency slip ring assembly. The electric slip ring assembly includes a ring body assembly, a combination bracket, a brush assembly, a dust cover, and a pinning recess. The fiber optic slip ring assembly includes a fiber optic slip ring fixing plate, a fiber optic slip ring rotor fixing plate, and a fiber optic slip ring. The high-frequency slip ring assembly comprises a high-frequency slip ring, a high-frequency slip ring fixing plate, and a high-frequency slip ring rotor fixing lever. The rotating portion of the high-frequency slip ring and the ring body assembly of the electric slip ring are connected by a clearance fit between the pins and the pinning recess, thereby achieving combined transmission of the two slip rings. The fiber optic slip ring and the high-frequency slip ring are driven by a slotted fit between the fiber optic slip ring rotor fixing plate and the high-frequency slip ring rotor fixing lever. The present invention not only enables high-speed signal transmission but also simultaneously transmits high-frequency signals. This improves signal transmission diversity, spatial redundancy, stability, and maintainability.

The invention discloses a DVB-S2 high-order modulation satellite channel transmission simulation method and a DVB-S2 high-order modulation satellite channel transmission simulation system based on GNU Radio. According to the method, on the basis of a GNU Radio platform, a high-order modulation transmission link conforming to the DVB-S2 standard is constructed, modulation and demodulation of 16 APSK and 32 APSK are achieved, and the spectrum efficiency of a system is remarkably improved; through deep integration of Loo and Corazza satellite channel models, multipath fading and shadow effects of rural and urban environments are accurately simulated, and simulation authenticity is enhanced. According to the system, the transmission diversity technology is adopted, and the transmission robustness under a fading channel is improved through a double-transmission-branch architecture. End-to-end transmission verification of a high-definition video stream is realized by means of a HackRF software radio hardware platform, a TR101290 standard analysis module is integrated to carry out packet error rate analysis, and the transmission performance of the system is objectively quantified. According to the system, convenient parameter configuration and real-time monitoring are achieved through a QT graphical interface, and the problems that in traditional satellite communication simulation, channel models are not matched, the system flexibility is poor, and transmission reliability and stability are low under deep fading are effectively solved.

In a system for establishing connectivity in a HF ALE cellular network, stations are organized to sound each channel, synchronized to every other station in the network. All stations make identical sounding transmissions using a single address, synchronized such that the differential timing within the coverage area remains within the mobile radios' delay spread capability. Synchronized soundings allow the mobile radio to consistently connect to the best available channel. The stations may be synchronized via a central control function. Alternatively, the stations may perform soundings based on a predetermined schedule. Where the propagation time to the mobile radio is known, or determinable within some threshold, the stations may apply a delay to the sounding transmissions to ensure that the sounding transmissions from each of the stations reaches the mobile radio at the same time within some acceptable margin.

The present invention discloses a method for reducing the bit error rate of a power line communication device and a power line communication device, the method comprising: S1, the power line communication device obtains channel measurement values ​​of multiple channels of a power line medium; wherein the multiple channels of the power line medium are associated with a transmission path of the power line medium, and the multiple channels correspond to different transmission paths respectively; S2, based on the channel measurement value of each channel, respectively calculating the average gain of each channel; wherein the channel measurement value of each channel is the channel gain value of multiple subcarriers of the channel; S3, selecting a receiving mode of the power line communication device based on the average gain of each channel; wherein the receiving mode is selected from a single SISO receiving mode and a receiving mode based on transmit diversity.

The invention discloses a diversity transmission method, a terminal and network side equipment, and belongs to the technical field of communication, and the diversity transmission method comprises the steps that the terminal determines configuration parameters of transmission diversity; and the terminal monitors control information sent by network side equipment based on the configuration parameters of the transmission diversity.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure discloses a method and an apparatus for error correction coding in a communication system, more specifically, to error correction coding integrated with transmission diversity.

In a system for establishing connectivity in a HF ALE cellular network, stations (200) are organized to sound each channel, synchronized (304) to every other station (200) in the network. All stations (200) make identical sounding transmissions using a single address, synchronized (304) such that the differential timing within the coverage area remains within the mobile radios' (202) delay spread capability. Synchronized (304) soundings allow the mobile radio (202) to consistently connect to the best available channel. The stations (200) may be synchronized (304) via a central control function (324). Alternatively, the stations (200) may perform soundings based on a predetermined schedule. Where the propagation time to the mobile radio (202) is known, or determinable within some threshold, the stations (200) may apply a delay (322) to the sounding transmissions to ensure that the sounding transmissions from each of the stations (200) reaches the mobile radio (202) at the same time within some acceptable margin.

The present application belongs to the technical field of communications. Disclosed are a diversity transmission method, a terminal and a network-side device. The diversity transmission method in the embodiments of the present application comprises: a terminal determining a configuration parameter of transmission diversity; and on the basis of the configuration parameter of the transmission diversity, the terminal monitoring control information sent by a network-side device.