DocumentCode :
1831765
Title :
Iterative Differential Unitary Space-Frequency Decoding for Multiband-OFDM UWB Communication Systems
Author :
Jin, Xiufeng ; Bi, Guangguo ; Xiao, Haiyong
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing
fYear :
2006
fDate :
22-26 Oct. 2006
Firstpage :
512
Lastpage :
516
Abstract :
Recently, noncoherent UWB radios have generated increasing interest among researchers due to the advantage of not requiring channel state information (CSI) at both transmitter and receiver. However, the trade-off is a penalty of approximately 3 dB in the required SNR compare to the coherent case. In order to overcome the gap, in this paper, we propose a differential encoding and decoding scheme for multiband UWB systems. The proposed scheme employs the parallel concatenation of two differential unitary space-frequency encoders at the transmitter and performs a simple soft decision iterative decoding at the receiver. Simulation results show that the proposed scheme can outperform the conventional differential and coherent detection at high SNR with few number of iterations
Keywords :
OFDM modulation; encoding; iterative decoding; ultra wideband communication; channel state information; differential encoding; differential unitary space-frequency encoders; iterative differential unitary space-frequency decoding; multiband-OFDM UWB communication systems; noncoherent UWB radios; parallel concatenation; soft decision iterative decoding; Bandwidth; Channel state information; Fading; Iterative decoding; Laboratories; MIMO; Mobile communication; OFDM; Radio transmitters; Ultra wideband communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory Workshop, 2006. ITW '06 Chengdu. IEEE
Conference_Location :
Chengdu
Print_ISBN :
1-4244-0067-8
Electronic_ISBN :
1-4244-0068-6
Type :
conf
DOI :
10.1109/ITW2.2006.323686
Filename :
4119350
Link To Document :
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