Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE). According to various embodiments of the present disclosure, a first apparatus in a wireless communication system that includes at least one processor and at least one transceiver operatively coupled with the at least one processor. The at least one processor is configured to obtain a channel matrix based on a signal received from a second apparatus, obtain an integer matrix for integer forcing (IF) based on the channel matrix, and generate channel information based on the integer matrix. The at least one transceiver is configured to transmit the generated channel information to the second apparatus.

Abstract: A channel encoding method in a communication or broadcasting system is provided. The channel encoding method includes reading a first sequence corresponding to a parity check matrix, converting the first sequence to a second sequence by applying a certain rule to a block size corresponding to a parity check matrix and the first sequence, and encoding information bits based on the second sequence. The block size has at least two different integer values.

Abstract: A method for repetitive transmission of a transport block, performed by a first communication node, may comprise generating a first modulation symbol by performing a modulation operation on a first bit sequence of the transport block; generating a second bit sequence by changing an arrangement order of bits included in the first bit sequence according to a preconfigured rule; generating a second modulation symbol by performing the modulation operation on the second bit sequence; and transmitting, to a second communication node, the first modulation symbol and the second modulation symbol on different data channels.

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate beyond the 4G communication system such as LTE. A decoding method using a polar code according to an embodiment of the present disclosure comprises the steps of: determining a first function for decoding input bits and a second function, which is independent from a log likelihood ratio (LLR) value of a previous input bit by the first function; and decoding the input bits in parallel using the first function and the second function. Also, the method comprises the steps of: determining an internal frozen bit using at least one input frozen bit which has a predetermined value of a predetermined position from among the input bits; and determining LLR values for layer bits sequentially from the higher layers of N layers.

Abstract: A channel encoding method in a communication or broadcasting system is provided. The channel encoding method includes reading a first sequence corresponding to a parity check matrix, converting the first sequence to a second sequence by applying a certain rule to a block size corresponding to a parity check matrix and the first sequence, and encoding information bits based on the second sequence. The block size has at least two different integer values.

Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transfer rate beyond a 4th generation (4G) communication system, such as long term evolution (LTE). The present disclosure provides a method and an apparatus for efficiently performing encoding and decoding of an information bit in a wireless communication system. The present disclosure relates to an operation method of a transmitting terminal in a wireless communication system, the method comprising the steps of: generating padding bits on the basis of information bits; generating an input bit sequence including the padding bits and the information bits; generating a message by encoding the input bit sequence by using a polar code; and transmitting the message.

Abstract: Disclosed herein are a method of retransmission for downlink transmission of a wireless communication system and an apparatus for the same. The method includes receiving multiple feedback signals corresponding to a transmission failure from multiple terminals corresponding to point-to-multipoint transmission, generating retransmission data in response to the multiple feedback signals, and transmitting the retransmission data to the multiple terminals.

Abstract: The present disclosure relates to a pre-5t-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for operating a transmitting stage in a wireless communication system includes generating a signal by encoding an input bit sequence according to polar code determined from a linear code, and transmitting the signal to a receiving stage. The input bit sequence includes a second frozen bit which is determined based on a first frozen bit and an information bit. The first frozen bit and the information bit precede the second frozen bit in the input bit sequence.

Abstract: A channel encoding method in a communication or broadcasting system is provided. The channel encoding method includes reading a first sequence corresponding to a parity check matrix, converting the first sequence to a second sequence by applying a certain rule to a block size corresponding to a parity check matrix and the first sequence, and encoding information bits based on the second sequence. The block size has at least two different integer values.

Abstract: A method and apparatus for channel encoding and channel decoding in a wireless communication system are provided. The channel encoding method includes generating a first parity set and a second parity set based on information bits, determining a number of additional parity bits based on a number of the information bits and a required coding rate, generating the determined number of additional parity bits using the information bits, and generating a codeword including the information bits, the first parity set, the second parity set, and the generated additional parity bits.

Abstract: A channel encoding method in a communication or broadcasting system is provided. The channel encoding method includes reading a first sequence corresponding to a parity check matrix, converting the first sequence to a second sequence by applying a certain rule to a block size corresponding to a parity check matrix and the first sequence, and encoding information bits based on the second sequence. The block size has at least two different integer values.

Abstract: Fifth Generation (5G) or pre-5G communication system for supporting a data transfer rate higher than that of a fourth Generation (4G) communication system, such as Long Term Evolution (LTE), and subsequent systems. The present disclosure provides a method for transmitting a signal by a transmission terminal in a communication system using a Low Density Parity Check (LDPC) code. The method include receiving a change request for changing a coding rate of the LDPC code, from a reception terminal; determining a first coding rate based on the change request; and transmitting information on the first coding rate in respond to the change request, to a reception terminal, wherein the change request for changing the coding rate comprises at least one of information indicating a coding rate determined by the reception terminal, or information indicating a state of the reception terminal.

Abstract: A 5th generation (5G) or pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE) is disclosed. The present disclosure relates to a rate compatible low-density parity-check (RC-LDPC) encoding method and device therefor. The encoding method includes using LDPC in a communication system, including the operations of LDPC encoding information bits by a first encoding rate, and performing a concatenated single parity check (SPC) encoding for the encoded bits by at least one second encoding rate lower than the first encoding rate.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication systems such as Long Term Evolution (LTE). A method for operating a receiver in a wireless communication system may include: receiving a signal from a transmitter; performing Integer Forcing (IF) equalization on the received signal; determining a log LikeLihood Ratio (LLR) value of each bit by using a posteriori probability of each bit for the signal determined based on an equalization matrix and a likelihood value for the signal; and decoding the signal by using the LLR value.

Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). A method and apparatus for transmitting a signal in a transmitting apparatus in a communication system supporting a rate compatible-low density parity check (RC-LDPC) code are provided. The method includes encoding information bits based on a first parity check matrix and a first code rate to generate a codeword, processing the codeword to generate a transmission signal, and transmitting the transmission signal.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments, in a multiple-input multiple-output wireless communication system, a receiving apparatus may include at least one processor and at least one transceiver. The at least one transceiver may be configured to receive a signal including a plurality of symbols, perform Successive Interference Cancellation (SIC) related to a first symbol of the plurality of symbols on the received signal to obtain a processed signal, determine symbol-sums by applying an equalization matrix for integer forcing to the processed signal, and determine information words corresponding to the plurality of symbols based on the symbol-sums.

Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). An operating method of a transmitting apparatus in a wireless communication system is provided. The operating method includes detecting an achievable rate region for a receiving apparatus, and determining a modulation and coding scheme (MCS) level and a sliding window superposition coding (SWSC) multi-input multi-output (MIMO) scheme corresponding to the achievable rate region.

Abstract: A method for performing scheduling by a first base station over a wireless communication network, and an apparatus therfor are provided. The method includes receiving first channel status information (CSI) measured by at least one user equipment (UE) positioned in coverage of the first base station and second CSI, determining a first transmission rate for any one of the at least one UE positioned in the coverage of the first base station and a second transmission rate for any one of the at least one UE positioned in the coverage of the second base station, determining a third transmission rate for a first UE among the at least one UE positioned in the coverage of the first base station and a fourth transmission rate for a second UE among the at least one UE positioned in the coverage of the second base station, and performing scheduling.

Abstract: A decoding method in a mobile communication system using a non-binary LDPC code according to various embodiments of the present disclosure includes: selecting a message value having the highest reliability from each column and each row of an input vector message; generating a configuration set using the message value selected for each column and a GF element corresponding to the message value; and generating a check node output message using the generated configuration set and an extra output message value. According to various embodiments of the present disclosure, a decoding time period is reduced.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The objective of the present disclosure is to signal control information necessary for selecting a transmission scheme in a wireless communication system. An method for operating a transmitting end includes, receiving capability information related to a receiver of a receiving end; transmitting control information related to a transmission scheme used for processing data determined based on the capability information; and transmitting a generated data signal by using the transmission scheme. The capability information comprises a rule for combining channel coding and a modulation and/or a rule for bit and symbol mapping.