Anovel algorithm of inter-subchannel interference cancellation for OFDM systems

研究成果: Conference contribution

摘要

Orthogonal frequency-division multiplexing (OFDM) transmission has inter-subchannel interference (ICI) in fast fading environment. Several algorithms have been proposed to reduce the ICI effects. Among these algorithms, the ICI self-cancellation schemes [3, 4] needs not to estimate the multipath responses, and its performance doesn't depend on the signal-to-noise ratio (SNR). In [4], the pre-processor in the transmitter extends the original symbol interval to obtain diversity that can be used by the post-processor of the receiver to make ICI self-cancelled. When the original symbol interval is doubled and the multipath channels vary linearly with time within the extended symbol interval, this algorithm can completely the ICI. However, the complexity of the post-processor in [4] is not low. It needs N +1 parallel fast-Fourier transforms (FFT). Moreover, there is no performance comparison between [3] and [4]. In this paper, we continue our work in [4] and propose an equivalent low-complexity post-processor that needs only one FFT. We also give analyze the variance of the residual ICI and derive an bit-error probability (BEP) upper bound. Furthermore, we compare the performance of our algorithm with Zhao's algorithm and give some related discussion.

原文English
主出版物標題Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop
頁面75-82
頁數8
出版狀態Published - 2006 十二月 1
事件5th International Workshop on Multi-Carrier Spread-Spectrum, MC-SS 2005 - Oberpfaffenhofen, Germany
持續時間: 2005 九月 142005 九月 16

出版系列

名字Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop

Other

Other5th International Workshop on Multi-Carrier Spread-Spectrum, MC-SS 2005
國家Germany
城市Oberpfaffenhofen
期間05-09-1405-09-16

指紋

Orthogonal frequency division multiplexing
Fast Fourier transforms
Multipath propagation
Transmitters
Signal to noise ratio

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

引用此文

Chang, M-X. (2006). Anovel algorithm of inter-subchannel interference cancellation for OFDM systems. 於 Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop (頁 75-82). (Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop).
Chang, Ming-Xian. / Anovel algorithm of inter-subchannel interference cancellation for OFDM systems. Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop. 2006. 頁 75-82 (Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop).
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Chang, M-X 2006, Anovel algorithm of inter-subchannel interference cancellation for OFDM systems. 於 Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop. Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop, 頁 75-82, 5th International Workshop on Multi-Carrier Spread-Spectrum, MC-SS 2005, Oberpfaffenhofen, Germany, 05-09-14.

Anovel algorithm of inter-subchannel interference cancellation for OFDM systems. / Chang, Ming-Xian.

Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop. 2006. p. 75-82 (Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop).

研究成果: Conference contribution

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Chang M-X. Anovel algorithm of inter-subchannel interference cancellation for OFDM systems. 於 Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop. 2006. p. 75-82. (Multi-Carrier Spread-Spectrum - Proceedings from the 5th International Workshop).