Research Article
Performance and Detection of Interleaved OFDMbased Transform Domain Communication System in Multi-user Cognitive Radio Context
@INPROCEEDINGS{10.1109/CROWNCOM.2007.4549812, author={Chuan Han and Jun Wang and Shaoqian Li}, title={Performance and Detection of Interleaved OFDMbased Transform Domain Communication System in Multi-user Cognitive Radio Context}, proceedings={2nd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2008}, month={6}, keywords={cognitive radio; transform domain communication system; multi-user detection; ordered successive interference cancellation}, doi={10.1109/CROWNCOM.2007.4549812} }- Chuan Han
Jun Wang
Shaoqian Li
Year: 2008
Performance and Detection of Interleaved OFDMbased Transform Domain Communication System in Multi-user Cognitive Radio Context
CROWNCOM
IEEE
DOI: 10.1109/CROWNCOM.2007.4549812
Abstract
Bit error rate (BER) performance of the interleaved orthogonal frequency division multiplexing (OFDM) - based transform domain communication system (TDCS) in multi-user cognitive radio context is analyzed in this paper. For the conventional detection scheme, which simply deals with the interference due to other users as noises, an approximate BER expression and a lower bound are derived in the additive white Gaussian noise (AWGN) channel. Numerical results show that the approximate formula matches the simulated results and the lower bound serves as a very tight bound. Further, an enhanced multi-user detection algorithm based on successive interference cancellation with statistic ordering is proposed for the interleaved OFDM-based TDCS in the multipath fading channel. Its performance advantage over the single user detection is proved through simulations.