Effect of channel estimation error on the performance of interleave-division multiple access systems

Authors:
Xingzhong Xiong;Jianhao Hu;Feng Yang;Xiang Ling
Affiliations:
National Key Lab. of Communication, University of Electronic Science and Technology of China and Electronic & Information Engineering Department, Sichuan University of Science & Engineering, China;National Key Lab. of Communication, University of Electronic Science and Technology of China;National Key Lab. of Communication, University of Electronic Science and Technology of China;National Key Lab. of Communication, University of Electronic Science and Technology of China
Venue:
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 3
Year:
2009

Citing 2
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The Shifting Interleaver Design Based on PN Sequence for IDMA Systems

FGCN '07 Proceedings of the Future Generation Communication and Networking - Volume 02
Interleave division multiple-access

IEEE Transactions on Wireless Communications

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Abstract

The effect of channel estimation error on the performance of the Interleave-Division Multiple Access (IDMA) Systems are studied in this paper. For comparison, a channel estimation approach based on Expectation Maximization (EM) algorithm is also presented. The theoretic analysis and simulation results show that the variance of the channel estimation error affects the bit-error-rate (BER) performance of the IDMA system significantly when the estimation error is large. The analysis and simulation results also indicate that the channel estimation information based on EM algorithm can approach to the ideal channel state information (CSI) with increasing iterations. Therefore, the channel estimation can cooperate harmoniously with the signal detection due to the iterative operation. The analysis model and simulation results provide a reference for the practical system design.