Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided for supporting a higher data transfer rate beyond a 4G communication system such as LTE. The present invention relates to a NOMA system based FQAM connection method and an apparatus therefor. The present invention can increase the user transfer rate at a cell boundary. The scheduling method in a wireless communication system, according to an embodiment of the present invention, comprises a step of receiving a signal-to-interference-noise ratio (SINR) value and an alpha value from a terminal; a step of determining, on the basis of the SINR value and the alpha value, a Gaussian SINR value; a step of pairing users on the basis of the Gaussian SINR value; and a step of re-computing MCS on the basis of a re-computed alpha value.

Abstract: The present invention relates to a transmit diversity method for FQAM and an apparatus therefor. According to the present invention, a transmit diversity method for FQAM and apparatus therefor are provided, the transmit diversity method comprising the steps of: modulating data into at least one FQAM symbol; interleaving a plurality of tones constituting the at least one FQAM symbol such that tones having the same index are located in adjacent resources; and transmitting the at least one interleaved FQAM symbol through at least one transceving unit.

Abstract: The present invention relates to not only a 4th-generation (4G) communication system such as long term evolution (LTE), but also a 5th-generation (5G) or pre-5G communication system which is provided to support a higher data rate. The present invention provides a method for performing a channel decoding operation by a reception device in a communication system, the method comprising the steps of: generating at least two resource elements (REs) into at least two RE groups; and generating a soft decision decoding metric for a signal received through each of the at least two RE groups.

Abstract: Disclosed are a method and an apparatus for estimating channel information. A terminal estimates a channel coefficient for each of subcarriers included in each symbol of the received signals, calculates power of the received signal matched to each of the subcarriers, calculates an interference estimation parameter for each of the subcarriers based on the power of the received signal matched to each of the subcarriers and based on power of a channel coefficient for a subcarrier on which the received signal has maximum power among the subcarriers, and calculates a non-Gaussian characteristic parameter of an interference signal related to the received signals based on the interference estimation parameters calculated for the subcarriers of all the symbols of the received signals.

Abstract: A method and a transmission device of a mobile communication system are disclosed. The method includes determining a modulation method for data transmission, determining the level of a quadrature amplitude modulation (QAM) according to the determined modulation method, determining the amplitude of a carrier wave and the phase of the carrier wave on the basis of the determined QAM level and the data to be transmitted, and, when the determined modulation method is a first modulation method, determining a sequence length, selecting a sequence form among sequences having the determined length according to the data to be transmitted, and generating a symbol modulating the data to be transmitted, on the basis of the selected sequence, the determined amplitude of the carrier wave, and the determined phase of the carrier wave.

Abstract: The present invention relates to a method for transmitting data in a wireless communication system, comprising the steps of: allocating, by a base station, a resource for transmitting data modulated by a hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) scheme in which a QAM scheme and a FSK scheme are combined; transmitting, by the base station, a sequence modulated by the FQAM scheme, to a mobile station, via an interference measurement channel; transmitting, by the base station, a reference signal for measuring channel quality information (CQI) to the mobile station; receiving, by the base station, CQI estimated based on an interference characteristic of the interference measurement channel, from the mobile station, and performing scheduling of the mobile station based on the received CQI; and transmitting, by the base station, the data modulated by the FQAM scheme to the mobile station.

Abstract: The present invention relates to a method for estimating a channel in a wireless communication system. In the method, a reference value is generated on the basis of a value indicating a non-Gaussian characteristic of an inter-cell interference signal and power values of received pilot symbols, the reference value is compared with each of the power values of the pilot symbols, at least one pilot symbol, which is relatively lightly damaged by the inter-cell interference signal, is selected, and a channel is estimated using the at least one selected pilot symbol.

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate after 4G communication systems such as LTE. A method according to an embodiment of the present invention is a communication method in a base station which communicates via filter bank-based multicarrier signals. The method may comprise the steps of: performing communication by allocating filters having non-orthogonality with respect to a first terminal positioned within a cell; selecting a filter set from among two or more filter sets having orthogonality with respect to a second terminal positioned at the edge of the cell; and performing communication by allocating, to the second terminal, at least one filter among filters included in the selected filter set.

Abstract: A method of transmitting a signal using a plurality of modulation and coding schemes by a transmitter in a wireless communication system is provided. The method includes when a position of an active tone hits a position of a pilot tone of an adjacent cell, the active tone corresponding to a tone boosted through an application of a hybrid Frequency Shift Keying (FSK) and Quadrature Amplitude Modulation (QAM) Modulation (FQAM) scheme among tones included in an FQAM symbol based on the FQAM scheme in which a QAM scheme and a FSK scheme are combined, detecting two or more tones, which do not hit the position of the pilot tone among the tones included in the FQAM symbol, and transmitting signals by using the detected two or more tones.

Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided for supporting a higher data transmission rate beyond 4G communication systems such as LTE. A method for modulation in a transmitter for transmitting a signal in a wireless communication system according to an embodiment of the present invention comprises: a step for determining a modulation scheme; a step for, if the determined modulation scheme corresponds to a specific modulation scheme, converting encoded information bits to quadrature amplitude modulation (QAM) symbols in accordance with a predetermined QAM modulation order, selecting a sequence corresponding to an element of an integer vector in a predetermined sequence set, repeating the converted QAM symbols for a predetermined sequence length, and outputting signals by multiplying the repeated QAM symbols and the selected sequence; and a step for transmitting the outputted signals to a receiver.

Abstract: The present disclosure relates to a 5G or a pre5G communication system to be provided for supporting a higher data transmission rate after 4G communication systems, such as LTE. According to embodiments of the present invention, a method and an apparatus for receiving signals in a mobile communication system may be provided, the method comprising the steps of: receiving a second signal including an interference signal of a first signal transmitted by a first terminal and a first signal transmitted by a second terminal; obtaining information related to the interference signal; removing the interference signal on the basis of the obtained information; and decoding the first signal after removing the interference signal from the second signal, wherein the information related to the interference signal includes resource block allocation information with respect to the interference signal and/or a reference signal for demodulating the interference signal.

Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided for supporting a higher data transfer rate beyond a 4G communication system such as LTE. The present invention relates to a NOMA system based FQAM connection method and an apparatus therefor. The present invention can increase the user transfer rate at a cell boundary. The scheduling method in a wireless communication system, according to an embodiment of the present invention, comprises a step of receiving a signal-to-interference-noise ratio (SINR) value and an alpha value from a terminal; a step of determining, on the basis of the SINR value and the alpha value, a Gaussian SINR value; a step of pairing users on the basis of the Gaussian SINR value; and a step of re-computing MCS on the basis of a re-computed alpha 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 Long Term Evolution (LTE). The present invention relates to a method and a device for efficiently shortening and puncturing a non-binary LDPC code, the method for a transmitter shortening and puncturing a non-binary code being capable of supporting various modulation methods by using a single non-binary code, and the method comprising the steps of: shortening, on the basis of a modulation method, at least one information bit in at least one information symbol constituting the non-binary code; encoding the at least one information symbol having a shortened information bit; and puncturing, on the basis of the modulation method, at least one parity code in at least one parity symbol obtained through the encoding step.

Abstract: A method and a device for transmitting and receiving a signal on the basis of multiple antennas are provided. A transmitting device may include a radio frequency (RF) module transmitting a quadrature amplitude modulation (QAM) signal of a first symbol corresponding to a hybrid frequency shift keying and quadrature amplitude modulation (FQAM) mode and transmitting a QAM signal of a second symbol corresponding to a QAM mode through a second antenna; and a modulation module mapping the QAM signal of the first symbol to one frequency tone among the preset number of frequency tones according to a frequency shift keying (FSK) signal of the first symbol and mapping the second symbol to the frequency tone to which the first symbol is mapped.

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 present invention relates to method and apparatus for performing a decoding with low complexity in a wireless communication system. A decoding method of a terminal in a wireless communication system comprises determining a first characteristic value indicating a statistical characteristic of an interference signal based on a received signal of a base station, determining a second characteristic value indicating a statistical characteristic of an interference signal based on data received from the base station, and decoding the data according to a decoding scheme corresponding to a difference of the first characteristic value and the second characteristic value.

Abstract: A method for determining an uplink (UL) channel quality by a base station (BS) includes obtaining a coverage class (CC) value of a user equipment (UE), receiving a random access (RA) signal from the UE, determining an UL channel quality of a band in which the RA signal is transmitted, based on the CC value and the RA signal, and generating UL resource allocation information based on the UL channel quality and transmitting the UL resource allocation information to the UE. The BS includes a transceiver configured to obtain a CC value of a UE and to receive a RA signal from the UE, and a controller configured to determine an UL channel quality of a band in which the RA signal is transmitted, based on the CC value and the RA signal. A UE includes determines a CC value of the UE based on a DL 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 a long term evolution (LTE). An operating method of a base station (BS) in a communication system supporting a time division multiplexing (TDD) scheme is provided. The operating method includes transmitting, to a user equipment (UE) which uses a second radio access technology (RAT) different from a first RAT used by other BS different from the BS, information related to downlink (DL) and uplink (UL) timing of the other BS and margin information for synchronizing DL and UL timing of the first RAT with DL and UL timing of the second RAT, wherein the information related to the DL and UL timing of the other BS is received from the other BS, or predicted by the BS.

Abstract: A method and an apparatus for detecting inter-cell interference in a mobile communication system are provided. A base station receives a reference signal (RS) from a terminal, generate one or more interference candidate RSs, calculate a cross correlation of the one or more interference candidate RSs and the received RS, estimate at least one of a size of a Resource Block (RB) an offset of the RB, a group index (U), and a cyclic shift (CS) by using a preset number of interference candidate RSs in an order of the large cross correlation. The base station further removes an interference signal or performs a direct reduction by using at least one of the estimated RB size, the RB offset, the timing offset, and the group index (U). According to the present disclosure, it is beneficial to mitigate or cancel inter-cell interference problem on an uplink transmission without any assistance of neighbor base stations and/or adjacent cells in a wireless communication system.

Abstract: The present invention relates to a transmit diversity method for FQAM and an apparatus therefor. According to the present invention, a transmit diversity method for FQAM and apparatus therefor are provided, the transmit diversity method comprising the steps of: modulating data into at least one FQAM symbol; interleaving a plurality of tones constituting the at least one FQAM symbol such that tones having the same index are located in adjacent resources; and transmitting the at least one interleaved FQAM symbol through at least one transceving unit.

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). Provided is an operation method of a base station in a wireless communication system. The method comprises: receiving, from a terminal, at least one piece of information among channel quality information on a resource region allocated to the terminal and non-Gaussian information on a nulling region corresponding to the resource region; and determining a modulation order for the terminal, a code rate, a ratio of the resource region to the nulling region based on the channel quality information and the non-Gaussian information.