A transmission apparatus and method, respectively, mapping payload data of mapping input data streams onto a mapping output data stream having a channel bandwidth for transmission in a multi-carrier broadcast system. To enable selection of robustness for transmission of data, the apparatus includes a frame forming mechanism mapping data blocks of at least two mapping input data streams onto frames of the mapping output data stream covering the channel bandwidth, each frame including a payload portion, the payload portion including plural data symbols and being segmented into data segments each covering a bandwidth portion of the channel bandwidth. The frame forming mechanism is configured to map the data blocks of the at least two mapping input data streams onto data symbols of the payload portion and includes a MIMO mode selector selecting a MIMO mode of the data blocks per data segment and/or per mapping input data stream.

Systems and methods for flexible channelization are provided. Different TU sizes are used for transmissions by different UEs. The different UEs may use different access schemes, and may transmit using time frequency resources that at least partially overlap.

Apparatus and methods are provided for multiple non-orthogonal multiple access (NOMA) layer each independently encoded with different configuration parameters, including MCS and NOMA spreading sequences. In one embodiment, the UE obtains NOMA configuration parameters for the DL data packets, decodes and reconnects multiple PDUs from the NOMA configuration parameters, and delivers decoded PDUs to upper layers of the UE. In one embodiment, the UE obtains the NOMA configuration parameters from a modified downlink control information (DCI). In another novel aspect, the base station partitions MBS data packets into multiple NOMA layers, encodes data packets for each NOMA layer with corresponding NOMA encoder, wherein each NOMA encoder is configured with independent NOMA configuration parameters, performs performing symbol alignment for encoded data packets from the multiple NOMA encoders, superimposes aligned data packets for the multiple MBS sessions into one RF channel to be transmitted to the UEs.

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). A transmission method for multiple access is provided. The transmission method including performing, by a transmitter, channel coding on a bit sequence to determine a coded sequence, performing, by the transmitter, symbol modulation on the coded sequence, performing, by the transmitter, grid mapping on the modulated symbol sequence to determine a mapped sequence, and transmitting the mapped sequence.

One embodiment of the present specification provides an interference-removed reception method. The interference-removed reception method may comprise the steps of: encoding, in a binary in a physical channel, stored information for an attacker cell which causes interference; performing a comparison between the encoded binary and a new binary in the physical channel received from the attacker cell; and if the binaries match, removing interference caused by the new binary in the physical channel received from the attacker cell by using the encoded binary, and thereby receiving a signal from a serving cell.

A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

Provided are a partial pseudo-randomization processing method, a corresponding apparatus, a device and a storage medium. The method includes performing pseudo-randomization processing on part of N bits b.sub.1, b.sub.2, . . . , b.sub.N to generate new N bits d.sub.1, d.sub.2, . . . , d.sub.N; and encoding the d.sub.1, d.sub.2, . . . , d.sub.N.

The present invention provides a method of transmitting broadcast signals. The method includes, encoding Data Pipe, DP, data according to a code rate, wherein the encoding further includes Low-Density Parity-Check, LDPC, encoding the DP data, Bit interleaving the LDPC encoded DP data, and mapping the bit interleaved DP data onto constellations; building at least one signal frame by mapping the encoded DP data; and modulating data in the built signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, method and transmitting the broadcast signals having the modulated data.

A method and apparatus relating to feedback in a communication system. The method includes receiving feedback relating to a transmission slot; and subsequently determining the type of transmission slot the feedback relates to.

Circuits for producing signals representative of mean and variance estimations for quadrature amplitude modulation (QAM) are provided where the circuits comprise: sequentially repeated first circuit modules and sequentially repeated second circuit modules configured for producing updates in the corresponding estimation iterations. In one embodiment, a closest negative integer power of 2 is used as a substitute multiplicand when multiplying together two or more outputs of hyperbolic function generating units where the substituted for output is less than one. Size and complexity of the corresponding multiplier can then be reduced.