Title :
Soft Decoding Algorithm for RS-CC Concatenated Codes in WiMAX System
Author_Institution :
Inst. for Infocomm Res.
Abstract :
In this paper, we present a soft decoding algorithm for the concatenated code as defined in the IEEE 802.16 OFDM specification. The concatenation is between a Reed-Solomon and convolutional code. We propose a low complexity soft output Viterbi algorithm for convolutional codes and Chase II decoding algorithm for Reed-Solomon codes. The simulation results of the six modes of concatenated codes found in the IEEE 802.16 technical specification are presented.
Keywords :
OFDM modulation; Reed-Solomon codes; Viterbi decoding; WiMax; concatenated codes; convolutional codes; Chase II decoding algorithm; IEEE 802.16 OFDM specification; RS-CC concatenated codes; Reed-Solomon code; WiMAX system; convolutional code; low complexity soft output Viterbi algorithm; soft decoding algorithm; Concatenated codes; Convolutional codes; Encoding; Error correction codes; Iterative decoding; Maximum likelihood decoding; OFDM; Reed-Solomon codes; Viterbi algorithm; WiMAX;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.162
