Semi-blind multiple-frequency-offset estimation for decode-and-forward OFDM cooperative networks

Yu Ting Sun, Jia Chin Lin

研究成果: 書貢獻/報告類型會議論文篇章同行評審

2 引文 斯高帕斯(Scopus)

摘要

Cooperative networks recently became attractive because they can achieve spatial diversity. Multiple decode-and-forward (DF) relay nodes result in multiple carrier frequency offsets (CFOs) because each relay node owns its local oscillator. This paper presents a novel semi-blind multiple-CFO estimator for DF OFDM cooperative networks. A procedure is designed to effectively derive the semi-blind multiple-CFO estimator for relay nodes. Each relay node occupies its own subchannels, and its CFO falls in a nonoverlapped spectrum. The CFO mapping can simply match the corresponding relay nodes. In addition, the proposed method can reduce hardware and computational complexity. Semi-blind random sequences are derived from the characteristics of the signal matrix in the multiple signal characterization (MUSIC) algorithm. Comprehensive simulations show that random sequences can replace periodic training sequences. Furthermore, some information can be conveyed by random sequences to increase spectral efficiency.

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主出版物標題IEEE Wireless Communications and Networking Conference, WCNC
發行者Institute of Electrical and Electronics Engineers Inc.
頁面463-467
頁數5
ISBN(電子)9781479930838
DOIs
出版狀態已出版 - 3 4月 2016
事件2014 IEEE Wireless Communications and Networking Conference, WCNC 2014 - Istanbul, Turkey
持續時間: 6 4月 20149 4月 2014

出版系列

名字IEEE Wireless Communications and Networking Conference, WCNC
ISSN(列印)1525-3511

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???event.eventtypes.event.conference???2014 IEEE Wireless Communications and Networking Conference, WCNC 2014
國家/地區Turkey
城市Istanbul
期間6/04/149/04/14

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