Title :
On Bandwidth Efficient Coded OFDM using Multilevel Turbo Codes and Iterative Multistage Decoding
Author :
Zhang, Zhi ; Qi, Binghua ; Zhang, Ping
Author_Institution :
Wireless Technol. & Innovation Lab., Beijing Univ. of Posts & Telecommun.
Abstract :
In this paper, we present some design methods for bandwidth efficient coded OFDM system. Multilevel turbo coded M-QAM scheme is investigated and some novel strategies are proposed to reduce coding complexities. An iterative multistage decoding with feedback between higher levels and lower ones is considered to be combined with Turbo decoding, which can improve the overall performance greatly. Several simulation results show that these schemes can provide substantial coding gains with high spectral efficiency.
Keywords :
computational complexity; iterative decoding; modulation coding; quadrature amplitude modulation; turbo codes; M-QAM scheme; bandwidth efficient coded OFDM; coding complexity reduction; iterative multistage decoding; multilevel turbo codes; spectral efficiency; substantial coding gains; Bandwidth; Convolutional codes; Fading; Fast Fourier transforms; Intersymbol interference; Iterative decoding; Modulation coding; OFDM modulation; Quadrature amplitude modulation; Turbo codes;
Conference_Titel :
Communications and Networking in China, 2006. ChinaCom '06. First International Conference on
Conference_Location :
Beijing
Print_ISBN :
1-4244-0463-0
Electronic_ISBN :
1-4244-0463-0
DOI :
10.1109/CHINACOM.2006.344713
