Decoding of low density parity check (LDPC) codes using quantized node operations with limited input range

摘要

An LDPC decoding device wherein by limiting the input to the check node processing operation unit (54) to a range narrower than values that can be assumed by a received value as input (limiting a processing range), it is possible to simplify the operation of the function f (using a look-up table LUT) and the operations of the sum total, the subtraction, and the function f-1 in the check node operation unit (54) with almost no degradation.