Serially Concatenated Luby Transform Coding and Bit-Interleaved Coded Modulation Using Iteratlive Decoding for the Wireless Internet
Ronald Y. S. Tee, Thanh Dang Nguyen, Lie‐Liang Yang, L. Hanzo · 2006
In bit-interleaved coded modulation (BICM) the coding and modulation schemes were jointly optimized for the sake of attaining the best possible performance when communicating over fading wireless communication channels. The iterative decoding scheme of BICM (BICM-ID) invoking an appropriate bit-to-symbol mapping strategy enhances its achievable performance in both AWGN and Rayleigh channels. BICM-ID may be conveniently combined with Luby transform (LT) codes, which were designed for handling packetized wireless Internet data traffic in erasure channels without retransmitting the corrupted packets. By jointly designing a serially concatenated LT-BICM-ID code, an infinitesimally low bit error rate (BER) is achieved for signal to noise ratios (SNR) in excess of 7.5 dB over wireless Internet type erasure channels contaminated by AWGN