Mobile multiuser access with approximately MAI-free PMU-OFDM transceiver design

Layla Tadjpour*, Shang-Ho Tsai, C. C.Jay Kuo

*此作品的通信作者

研究成果: Conference contribution同行評審

摘要

A new multiuser OFDM transceiver with preceding was introduced by Tsai, Lin and Kuo in [8]. The system can reduce multiaccess interference (MAI) due to the carrier frequency offset (CFO) to a negligible amount by the use of even or odd Hadamard-Walsh codewords. The performance of this system in a mobile environment, where the channel response varies within one OFDM symbol due to the Doppler effect, is evaluated in this work. It is shown that the use of even or odd Hadamard-Walsh codewords can greatly reduce the MAI due to the Doppler effect as well. It is also demonstrated by simulations that all Hadamard-Walsh codes except for the all-one code result in considerable suppression of ICI due to the Doppler effect. Finally, we show that the new system with odd Hadamard-Walsh codes outperforms a half-loaded OFDMA system in a mobile channel environment.

原文English
主出版物標題Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems and Computers
頁面1451-1455
頁數5
DOIs
出版狀態Published - 1 十二月 2005
事件39th Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States
持續時間: 28 十月 20051 十一月 2005

出版系列

名字Conference Record - Asilomar Conference on Signals, Systems and Computers
2005
ISSN(列印)1058-6393

Conference

Conference39th Asilomar Conference on Signals, Systems and Computers
國家/地區United States
城市Pacific Grove, CA
期間28/10/051/11/05

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