多存取正交分頻多工之共同載波偏移校正的訊號干擾功率比分析; Signal to Interference Power Ratio Analysis for OFDMA with Common Carrier Frequency Offset Correction

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Title:	多存取正交分頻多工之共同載波偏移校正的訊號干擾功率比分析;Signal to Interference Power Ratio Analysis for OFDMA with Common Carrier Frequency Offset Correction
Authors:	許益嘉;Yi-chia Hsu
Contributors:	通訊工程研究所
Keywords:	多使用者干擾;子載波間內干擾;共同載波頻率偏移;載波頻率偏移;訊號干擾比分析;正交分頻多工存取;MUI;common carrier frequency offset;orthogonal frequency division multiple access;CFO;SIR;CCFO;ICI;OFDMA;multiuser interference;carrier frequency offset;signal-to-interference power ratio
Date:	2009-07-01
Issue Date:	2009-09-22 11:22:50 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	多存取正交分頻多工系統因載波頻率偏移所產生的子載波間干擾以及多使用者干擾，在文獻中已被提出許多解決方法。在我們的研究中，接收端的共同載波頻率偏移補償方法是個創新且容易提升系統效能的架構，我們已發現在交錯分配系統中存在一個子載波間干擾常數的特性。本篇論文主要利用訊號干擾比的分析清楚呈現新的演算法的效能，並且使用不同觀點切入我們的分析結果，並於模擬結果中做多元的探討。最後在訊號干擾比與位元錯誤率的模擬分析中，可結論於多存取正交分頻多工系統接收端使用共同載波頻率偏移的補償方法將能得到較過去更為優異的性能。 Many solutions can be found in the literature to solve the effect of inter-carrier interference (ICI) and multiuser interference (MUI) due to multiple carrier frequency offsets (CFOs) presented in a multi-access orthogonal frequency division multiplexing (OFDMA) system. In our study, common carrier frequency offset (CCFO) correction at the OFDMA receiver is a novel and feasible scheme to reach the improvement of system performance. In addition, we also found the factor that can completely remove the ICI effect in interleaved OFDMA systems. This paper demonstrates the efficiency of the proposed method through the signal to interference ratio (SIR) analysis. We show a variety of analytic measures in simulation results and conclude that the proposed CCFO correction method can achieve better system performance than the past works.
Appears in Collections:	[Graduate Institute of Communication Engineering] Electronic Thesis & Dissertation

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