DEVICE AND METHOD OF TRANSMITTING AND RECEIVING CODED DATA USING CODER, WITH UNEQUAL ERROR PROBABILITY, IN MOBILE COMMUNICATIONS SYSTEM

摘要

FIELD: information technology. ^ SUBSTANCE: proposal is given of a device for transmitting data bits after coding data bits using a LDPC, with unequal values of error probability in a mobile communications system, carries out channel coding and transmits the data bits. The device consists of: a LDPC coder for converting high data bits to low variable nodes and low data bits to high variable nodes. The high data bits have higher priority, and low data bits have low priority. Low variable nodes are variable nodes with low error probability values, and high variable nodes are variable nodes with high error probability values on the graph of coefficients of LDPC codes. ^ EFFECT: design of a device and method of transmitting bits by application of various error probability values to the transmitted bits through use of unequal codes of sparse even-parity check. ^ 36 cl, 9 dwg