Title :
Low-Complexity Joint Channel Estimation and LDPC Decoding for Block Fading Channel
Author :
Lin, Zhichu ; Yang, Zhixing ; Pan, Changyong
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
fDate :
Aug. 31 2006-Sept. 1 2006
Abstract :
This paper presents a low-complexity iterative joint channel estimation and LDPC decoding algorithm for block-fading channel. Normalized min-sum algorithm, which has a much lower complexity than sum-product algorithm, is used as LDPC decoding algorithm. By choosing an optimal normalization factor, the performance of our algorithm can be as good as its counterpart using sum-product algorithm, and only 0.3-0.5 dB away from the case where perfect CSI is known
Keywords :
block codes; channel coding; channel estimation; fading channels; iterative decoding; parity check codes; LDPC decoding algorithm; block fading channel; iterative joint channel estimation; normalized min-sum algorithm; AWGN channels; Algorithm design and analysis; Binary phase shift keying; Channel estimation; Fading; Iterative algorithms; Iterative decoding; Iterative methods; Parity check codes; Sum product algorithm;
Conference_Titel :
Communications, 2006. APCC '06. Asia-Pacific Conference on
Conference_Location :
Busan
Print_ISBN :
1-4244-0573-4
Electronic_ISBN :
1-4244-0574-2
DOI :
10.1109/APCC.2006.255801
