APPARATUS AND METHOD FOR DECODING FOR NON BINARY LOW DENSITY PARITY CHECK INCODEING

摘要

PURPOSE: An apparatus and a method for decoding for a non binary low density parity check decoding are provided to reduce the deterioration of performance by using a new message structure of an EMS(Extended Min-Sum) decoding algorithm. CONSTITUTION: A demodulator(610) demodulates a signal received from a channel and generates LLR value. A decoder(620) selects an LLR of a certain value which is high from generated LLR values. The decodes calculates the difference between highest LLR value and a rest LLR value, uses a message vector, and performs LDPC decoding.