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http://dx.doi.org/10.6109/jkiice.2011.15.2.432

An analysis of Optimal Design Conditions of Multi-mode LDPC Decoder for IEEE 802.11n WLAN System  

Park, Hae-Won (금오공과대학교 전자공학부)
Na, Young-Heon (금오공과대학교 전자공학부)
Shin, Kyung-Wook (금오공과대학교 전자공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.15, no.2, 2011 , pp. 432-438 More about this Journal
Abstract
This paper describes an analysis of optimal design conditions of multi-mode LDPC(low density parity check) decoder which supports three block lengths (648, 1296, 1944) and four code rates (1/2, 2/3, 3/4, 5/6) for IEEE 802.11n WLAN system. A fixed-point model of LDPC decoder, which adopts min-sum algorithm and layered decoding scheme, is implemented using Matlab. From fixed-point simulation results for various bit-width parameters such as internal bit-width, integer/fractional part bit-widths, optimal design conditions and decoding performance of LDPC decoder are analyzed.
Keywords
LDPC code; error correction code; IEEE 802.11n; layered decoding;
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