Title :
The investigation of improved extrinsic information feedback algorithm for LDPC coded BICM-ID
Author :
Dou, Jin-Fang ; Jiang, Ming
Author_Institution :
Sci. & Technol. on Space Microwave Lab., China Acad. of Space Technol. (Xi´´an), Xi´´an, China
Abstract :
LDPC codes are very powerful error correction codes for Bit-interleaved coded modulation with iterative decoding (BICM-ID) scheme. In this paper, an improved extrinsic information feedback algorithm based on Gaussian approximation is investigated for LDPC coded BICM-ID system. This method can alleviate the correlation of extrinsic information during iterative processing and thus make the extrinsic output of decoder more credible. Simulation results show that, compared with the conventional algorithms, the improved extrinsic information feedback algorithm achieves considerable error performance improvement with only modest increase in computation complexity.
Keywords :
Gaussian processes; approximation theory; error correction codes; interleaved codes; iterative decoding; parity check codes; BICM-ID; Gaussian approximation; LDPC codes; bit-interleaved coded modulation; error correction code; extrinsic information feedback algorithm; iterative decoding; Approximation algorithms; Decoding; Demodulation; Iterative decoding; Simulation; (LDPC); BICM with iterative decoding(BICM-ID); Bit-interleaved coded modulation (BICM); Extrinsic information; Low-density; codes; parity-check;
Conference_Titel :
Electronics, Communications and Control (ICECC), 2011 International Conference on
Conference_Location :
Ningbo
Print_ISBN :
978-1-4577-0320-1
DOI :
10.1109/ICECC.2011.6066307
