The apparatus, which may be a receiving device, is disclosed. The apparatus may receive at least one HARQ retransmission of at least one first bit. The HARQ retransmission may be associated with an MLC scheme including MSD. The MLC scheme may include a plurality of bits with the at least one first bit and at least one second bit. The apparatus may decode the at least one first bit of the MLC scheme based on the at least one HARQ retransmission. The apparatus may determine whether the at least one first bit of the MLC scheme is decoded successfully. The apparatus may decode, upon determining that the at least one first bit of the MLC scheme is decoded successfully, the at least one second bit of the MLC scheme based on at least one ARQ retransmission of the at least one second bit.

All data symbols used in data transmission of a modulated signal are precoded by switching between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol along the frequency axis and the time axis all differ. A modulated signal with such data symbols arranged therein is transmitted.

All data symbols used in data transmission of a modulated signal are precoded by switching between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol along the frequency axis and the time axis all differ. A modulated signal with such data symbols arranged therein is transmitted.

Methods and apparatuses are described herein for transmit diversity in an uplink control channel. A wireless transmit/receive unit (WTRU) may perform a Discrete Fourier Transform (DFT) precoding operation on a data symbol sequence segment to generate a DFT precoded segment. The WTRU may then perform a Space Frequency Block Coding (SFBC) operation on the DFT precoded segment to generate a SFBC processed segment. The data symbols of the DFT precoded segment may be reordered in the SFBC processed segment. The WTRU may map the DFT precoded segment to a first set of contiguous subcarriers and the SFBC processed segment to a second set of contiguous subcarriers. The WTRU may then transmit a first DFT spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) signal on the first set of contiguous subcarriers via a first antenna port and a second DFT-s-OFDM signal on the second set of contiguous subcarriers via a second antenna port.

The present disclosure discloses a method and a device in a User and a base station used for channel coding. A first node determines a first bit block; performs channel coding; and transmits a first radio signal. Bits in the first bit block are used to generate bits in a second bit block. The bits in the first bit block and in the second bit block are used for an input to the channel coding, an output after the channel coding is used to generate the first radio signal. Channel coding is based on a polar code. A sub-channel occupied by a target first type bit is related to the number of bits in the second bit block related to the target first type bit. The target first type bit belongs to the first bit block. The disclosure can improve decoding performance of polar codes and reduce complexity of decoding.

A wireless audio system including a transmitter using multiple antenna diversity techniques for different signal types is provided. Multipath performance may be optimized, along with improved spectral efficiency of the system.

Embodiments of the disclosure provide a transmission system, including: an encoder for encoding a set of information symbols into a set of encoded signals for transmission, wherein the encoder applies a full-diversity space-time block code (STBC) to the set of information symbols; and at least three antennas for transmitting the set of encoded signals over four epochs at a code rate of two.

Methods and systems for two-dimensional (2D) coding are described for broadcast, multicast or groupcast applications. Two or more information code blocks (CBs) are transmitted to a plurality of intended receiving nodes. One or more cross-CB check blocks are generated, each cross-CB check block being generated based on a set of cross-CB bits, the set of cross-CB bits including at least one bit selected from each of at least two of the information CBs. At least one cross-CB check block is transmitted to at least one of the intended receiving nodes.

The embodiments of the application provide feedback information sending or receiving methods, devices and a system, and relate to the field of communication. The method includes that: a first bit length is determined, the first bit length being a number of bits for representing Transport Block (TB)-level feedback response information; a second bit length is determined, the second bit length being a number of bits for representing target TB indication information; feedback information is generated according to the first bit length and the second bit length, the feedback information including the TB-level feedback response information, the target TB indication information and code block group-level feedback response information; and the feedback information is sent.

A method for transmitting feedback response information and a related product are provided. The method includes: receiving, by a terminal, configuration information from a network device; determining, by the terminal, a largest number of pieces of feedback response information corresponding to one physical shared channel according to the configuration information; determining, by the terminal, a bit length of a first information field according to the largest number of pieces of the feedback response information; determining, by the terminal, a feedback response information sequence in a target time unit according to the first information field; and sending, by the terminal, the feedback response information sequence in the target time unit.