盲目波束成型法於不足的循環字首與載波頻率偏移在單載波分頻多工存取上行鏈結; Blind Beamforming Schemes in SC-FDMA Uplink with Insufficient Cyclic Prefix and Carrier Frequency Offset

NCUIR > College of Electrical Engineering & Computer Science > Graduate Institute of Communication Engineering > Electronic Thesis & Dissertation > Item 987654321/8219

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/8219

Title:	盲目波束成型法於不足的循環字首與載波頻率偏移在單載波分頻多工存取上行鏈結;Blind Beamforming Schemes in SC-FDMA Uplink with Insufficient Cyclic Prefix and Carrier Frequency Offset
Authors:	劉正毅;Cheng-Yi Liu
Contributors:	通訊工程研究所
Keywords:	單載波分頻多工存取;頻率偏移;干擾消除;天線陣列;波束成型;SC-FDMA;frequency offset;interference cancellation;antenna arrays;beamforming
Date:	2008-07-07
Issue Date:	2009-09-22 11:21:21 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	在以循環字首為基礎的傳輸系統中，當循環延伸之持續期間小於通道脈衝響應之持續期間時，由於引進了符號間干擾與載波間干擾，這樣會降低系統效能。在此篇論文之中，我們提出了一種盲目波束成型演算法於不足的循環字首在單一載波分頻多工存取系統中。除此之外，我們並考慮了載波頻率偏移所造成的影響於處理方法中。這裡所呈現之模擬結果為使用單一載波分頻多工存取上行鏈結系統模型來說明所提出之演算法之功效。 In cyclic prefix (CP)-based transmission systems, if the time duration of the cyclic extension is shorter than the channel impulse response duration, this degrades system performance due to introducing inter-symbol interference (ISI) and inter-carrier interference (ICI). In this thesis, we propose a blind beamforming algorithm for single carrier frequency division multiple access (SC-FDMA) systems under insufficient CP scenarios. Besides, we also consider the effects of carrier frequency offsets (CFO) in the processing schemes. The simulation results are presented here by employing the SC-FDMA uplink signal model to illustrate the efficacy of the proposed algorithms.
Appears in Collections:	[Graduate Institute of Communication Engineering] Electronic Thesis & Dissertation

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