Adaptive schemes and analysis for blind beamforming with insufficient cyclic prefix in single carrier-frequency division multiple access systems

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Title:	Adaptive schemes and analysis for blind beamforming with insufficient cyclic prefix in single carrier-frequency division multiple access systems
Authors:	陳永芳;Fu, Kuo-Ching;Huang, Shiuan-Wei;Chen, Yung-Fang
Contributors:	資訊電機學院通訊工程學系
Keywords:	Adaptive algorithms;adaptive processing scheme;adaptive signal processing;array signal processing;batch mode;Beamforming;beamforming weight vector;blind received beamforming scheme;Blinds;carrier frequency offsets;Carriers;CFOs;channel impulse response;cochannel interference;computational complexity;CP length;Division;eigenanalysis;eigenvalues and eigenfunctions;frequency division multiple access;insufficient cyclic prefix;intercarrier interference;Interference;intersymbol interference;inter‐carrier interference;inter‐symbol interference;long‐delayed multipath signal suppression;Multiple access;Retarding;single carrier‐frequency division multiple access systems;transient response
Date:	2014-01-01
Issue Date:	2026-04-23 12:55:00 (UTC+8)
Publisher:	Institution of Engineering and Technology;Stevenage: The Institution of Engineering and Technology
Abstract:	摘要： When the duration of the cyclic prefix (CP) is shorter than that of the channel impulse response in single carrier-frequency division multiple access systems, inter-symbol interference and inter-carrier interference will degrade the system performance. Previously, one solution of this problem while considering the effect of carrier frequency offsets (CFOs) and the co-channel interference is a blind received beamforming scheme based on eigenanalysis in a batch mode. As the capability in suppressing the multipath signal with the delay larger than the CP length has not previously been analysed theoretically for the scheme, the theoretical analysis regarding the capability in suppressing the long-delayed multipath signal is provided in this study. The analysis provided in this study is also utilised to design an adaptive processing scheme. The adaptive algorithm is developed to find the beamforming weight vector updated on a per symbol basis without using reference signals. The proposed adaptive algorithm reduces the computational complexity of and shows competitive performance under the insufficient CP, the CFOs, the co-channel interference and the time-varying scenarios. The simulation results reveal that the proposed adaptive algorithm provides better performance than the previously proposed algorithm. 出版者： Stevenage: The Institution of Engineering and Technology 出版日期： 2014-06 出處： IET communications, 2014-06, Vol.8 (9), p.1477-1487 資源來源： Wiley Online Library Open Access 版權： The Institution of Engineering and Technology 版權： 2021 The Institution of Engineering and Technology 版權： Copyright The Institution of Engineering & Technology Jun 2014 識別號： ISSN: 1751-8628 識別號： ISSN: 1751-8636 識別號： EISSN: 1751-8636 識別號： DOI: 10.1049/iet-com.2013.0710
Appears in Collections:	[Department of Communication Engineering] journal & Dissertation

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