ISI mitigation and channel tracking in MIMO-OFDM systems

Wen-Rong Wu*, Chao Yuan Hsu, Hsien Tse Hsu

*Corresponding author for this work

研究成果: Conference contribution

摘要

When the channel response is longer than the guard interval in OFDM systems, inter-symbol interference (ISI) and intercarrier interference (ICI) will occur and this may seriously affect the receiver performance. In this paper, we consider the ISI and ICI mitigation in MIMO-OFDM systems. We propose to use a decision feedback technique for ISI cancelation and a cyclic reconstruction technique for ICI removal. Combining with the V-BLAST method, we obtain an iterative signal detection algorithm for MIMO-OFDM systems. Since the channel may be time-variant, we then further propose an adaptive time-domain channel tracking method. The algorithm can be implemented with IFFT so that its computational complexity is low. Simulations demonstrate that the proposed method can effectively enhance the overall MIMO-OFDM system performance.

原文English
主出版物標題Proceedings of 2005 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2005
頁面101-104
頁數4
DOIs
出版狀態Published - 1 十二月 2005
事件2005 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2005 - Hong Kong, China
持續時間: 13 十二月 200516 十二月 2005

出版系列

名字Proceedings of 2005 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2005
2005

Conference

Conference2005 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2005
國家China
城市Hong Kong
期間13/12/0516/12/05

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  • 引用此

    Wu, W-R., Hsu, C. Y., & Hsu, H. T. (2005). ISI mitigation and channel tracking in MIMO-OFDM systems. 於 Proceedings of 2005 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2005 (頁 101-104). [1595356] (Proceedings of 2005 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2005; 卷 2005). https://doi.org/10.1109/ISPACS.2005.1595356