Low Complexity Ldpc Codec For 802.16e Standard

Abstract

The WiMAX is an IEEE 802.16e wireless communication standard used in wireless MAN’s use LDPC codes as the error correcting codes. The throughput requirements of WiMAX standard is 75Mbps demanding high number of arithmetic operations and increased memory accesses per second. In this paper the dual diagonal structured LDPC encoder is used which reduces the encoding complexity. Horizontal TDMP Min-Sum algorithm is used for the decoding which halves the number of iterations and also leads to reduced memory footprint.