Embodiment techniques map parity bits to sub-channels based on their row weights. In one example, an embodiment technique includes polar encoding, with an encoder of the device, information bits and at least one parity bit using the polar code to obtain encoded data, and transmitting the encoded data to another device. The polar code comprises a plurality of sub-channels. The at least one parity bit being placed in at least one of the plurality of sub-channels. The at least one sub-channel is selected from the plurality of sub-channels based on a weight parameter.

A transmitting system and a method of transmitting digital broadcast signal are provided. The method of transmitting digital broadcasting signal in a transmitter includes multiplexing mobile data and main data, transmitting a transmission frame including the multiplexed mobile and main data, where a parade of data group is transmitted during slots, where each slot includes specified number of mobile data packets, a first scalable number of mobile data packets, and a second scalable number of main data packets, where the data group including a plurality of regions and the fifth region of the plurality of regions includes the first scalable number of mobile data packets, and where the data group is assigned to one of the slots in such a manner that slots of consecutive slot number carry data groups of inconsecutive group number.

Devices, systems and methods for list decoding of polarization-adjusted convolutional (PAC) codes are described. One example method for improving error correction in a decoder for data in a communication channel includes receiving a noisy codeword, the codeword having been generated using a polarization-adjusted convolutional (PAC) code and provided to the communication channel prior to reception by the decoder, and performing PAC list decoding on the noisy codeword, wherein an encoding operation of the PAC code comprises a convolutional precoding operation that generates one or more dynamically frozen bits, and wherein the PAC list decoding comprises extending, based on the one or more dynamically frozen bits, at least two paths of a plurality of paths in the PAC list decoding differently and independently.

Systems and methods for the secure transmission of data and algorithms are disclosed. The coding and modulation schemes meet the need of low signal-to-noise (SNR) ratio applications in areas of high interference. A radio transmitter is used to transmit data signals and a radio receiver is used to receive signals. The new coding algorithms and modulation for wideband communication at very low SNR domains. Systems use orthogonal frequency-division multiplexing modulation and a channel pilot algorithm for timing synchronization and frame alignment. Systems also use an orthogonal code, a super orthogonal convolutional code, and a block code to achieve channel capacity within 80% of the Shannon limit in the subzero decibel (dB) domain with reasonable decoding complexity. In an implementation example given, a 12.5 MHz band radio can transmit at a 108 kbps user data rate at −20 dB SNR and escape adversity detection.

A wireless local area network (WLAN) transmitter includes a baseband processing module and a plurality of radio frequency (RF) transmitters. The processing module selects one of a plurality of modes of operation based on a mode selection signal. The processing module determines a number of transmit streams based on the mode selection signal. The processing of the data further continues by converting encoded data into streams of symbols in accordance with the number of transmit streams and the mode selection signal. A number of the plurality of RF transmitters are enabled based on the mode selection signal to convert a corresponding one of the streams of symbols into a corresponding RF signal such that a corresponding number of RF signals is produced.

A wireless terminal and a node employed in a wireless communications system comprise an outer coding unit configured to use a code with properties akin to Raptor codes as outer erasure codes; and an inner coding unit configured to use an LDPC code as pre-code. The wireless terminal and the node use a code with properties akin to Raptor codes as outer erasure codes, and use the LDPC code as a pre-code.

The present disclosure relates to a communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Further, the present disclosure relates to decoding of a turbo code in a communication system including long term evolution (LTE), and to efficiently implement a method, procedure, and device for receiving and decoding a signal transmitted in a mobile communication system.

A method for receiving, by a first device, data from a second device. The first device receives modulation and coding related information and resource related information for a transport block with a size for the data, and receives second cyclic redundancy check (CRC) attached code blocks to which a first CRC attached transport block corresponding to the transport block is mapped. The first device obtains the transport block with the size from the second CRC attached code blocks based on the modulation and coding related information and resource related information. The modulation and coding related information and the resource related information represent the size of the transport block. The size of the transport block is one of a plurality of predetermined transport block sizes. The plurality of predetermined transport block sizes are predetermined such that all the second CRC attached code blocks have a same size as each other.

In a transmitting device, in interchanging to interchange a code bit of an LDPC code in which a code length is 16200 bits and an encoding rate is 7/15 with a symbol bit of a symbol corresponding to any of 8 signal points defined by 8PSK, when 3 bits of code bits stored in three units of storages having a storage capacity of 16200/3 bits and read bit by bit from the units of storages are allocated to one symbol, a bit b0, a bit b1, and a bit b2 are interchanged with a bit y1, a bit y0, and a bit y2, respectively. A position of the interchanged code bit obtained from data transmitted from the transmitting device is returned to an original position. The present technology is applicable to a case of transmitting data using an LDPC code, for example.

A method and broadcast terminal for receiving an emergency alert message in a sleep mode, are discussed. In one embodiment, the method includes monitoring fast information channel (FIC) wake-up indicator in an FIC segment to determine if the broadcast terminal should be switched to an active mode to receive the emergency alert message; getting an FIC-Chunk payload responsive to the FIC wake-up indicator in the FIC segment, the FIC-Chunk payload including an emergency alert data package indicator; receiving an alert data indicated by a data package identification included in the FIC-Chunk payload, the emergency alert data package indicator indicating an emergency alert table describing the emergency alert message is carried in the data; and parsing the emergency alert message based on the emergency alert table.