A wireless communication receiver including a serial to parallel converter receiving an radio frequency signal, a fast Fourier transform device connected to said serial to parallel converter converting N.sub.FFT corresponding serial signals into a frequency domain; an EZC root sequence unit generating a set of root sequence signals; an element-by-element multiply unit forming a set of products including a product of each of said frequency domain signals from said fast Fourier transform device and a corresponding root sequence signal, an N.sub.SRS-length IDFT unit performing a group cyclic-shift de-multiplexing of the products and a discrete Fourier transform unit converting connected cyclic shift de-multiplexing signals back to frequency-domain.

Provided is a radio communication device which can make Acknowledgement (ACK) reception quality and Negative Acknowledgement (NACK) reception quality to be equal to each other. The device includes: a scrambling unit (214) which multiplies a response signal after modulated, by a scrambling code “1” or “e.sup.−j(π/2)” so as to rotate a constellation for each of response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a Zero Auto Correlation (ZAC) sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).

Wireless communications systems and methods related user multiplexing with discrete Fourier transform (DFT) precoded frequency interlaces are provided. A first wireless communication device identifies a first block-spreading code from a set of block-spreading codes associated with user multiplexing. The first wireless communication device communicates, with a second wireless communication device using a frequency interlace in a frequency spectrum, a first communication signal including a first block of information symbols spread across a set of resource blocks (RBs) within the frequency interlace based on the first block-spreading code. The first communication signal is generated by block-spreading the first block of information symbols based on the first block-spreading code to produce a first block of spread information symbols, performing a DFT on the first block of spread information symbols, and mapping the first block of spread information symbols to the set of RBs.

Provided are a method for a first device to perform wireless communication, and a device supporting same. The method may comprise: a step for generating a physical sidelink control channel (PSCCH) demodulation reference signal (DMRS) sequence; a step for applying an orthogonal cover code (OCC) to the PSCCH DMRS sequence and mapping the OCC on a PSCCH resource; and a step for transmitting the PSCCH DMRS sequence to a second device.

A client device for associating phase tracking reference signal (PTRS) antenna ports to demodulation reference signal (DMRS) antenna ports, the client device being configured obtain configuration information related to a set of PTRS antenna ports, obtain control information indicating at least one of one or more codewords, a set of DMRS antenna ports assigned to the one or more codewords, or transmission configuration indication (TCI) information indicating one or more TCI states, and determine an association between the set of PTRS antenna ports and the set of DMRS antenna ports based on the configuration information related to the set of PTRS antenna ports and the control information.

A method and a system for concurrently transmitting from an antenna a first sequence of data from a first access node and a second sequence of data from a second access node. An example method includes orthogonally encoding the first and second sequences, including encoding the first sequence with a first binary code to produce a first encoded sequence and encoding the second sequence with a second binary code to produce a second encoded sequence, combining the first encoded sequence and the second encoded sequence to produce a combined encoded sequence, and transmitting the combined encoded sequence from the antenna, with transmitting the combined encoded sequence from the antenna including engaging in a first transmission of the combined encoded sequence from the antenna and engaging in a second transmission of the combined encoded sequence from the same antenna with a phase delay compared with the first transmission.

A method and device for modulating with Zadoff-Chu sequences. Each K-ary symbol to be transmitted is converted into a Zadoff-Chu sequence of preset length N and of preset root r, and the frequency offset q of which is dependent on the K-ary symbol. Various root values may be used to separate distinct uplink and downlink and synchronous or asynchronous communications. The modulating device is implemented in the frequency domain. A demodulating method and device allows the K-ary symbols thus transmitted to be recovered. The demodulating device may be implemented in the time domain or frequency domain.

Methods, systems, and devices for wireless communications are described that provide sequences of spreading codes and hopping patterns that may be used in non-orthogonal multiple access (NOMA) communications between a user equipment (UE) and a base station. A codebook of spreading codes and the associated hopping patterns may be systematically constructed by closed form formulas or look up table. The base station may receive multiple concurrent transmissions from multiple different UEs, and the sequences of spreading codes and hopping patterns, may be used to identify a particular UE of the multiple UEs.

According to one embodiment, an electronic apparatus includes receiver circuitry and transmitter circuitry. The receiver circuitry receives a first association request frame from a first electronic apparatus. The transmitter circuitry transmits a first association response frame corresponding to the first association request frame to the first electronic apparatus, and transmits a second association request frame to the first electronic apparatus, in response to receipt of the first association request frame.

A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme.