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研究生:鍾宜學
研究生(外文):Yi-Hsueh Chung
論文名稱:線性區塊碼在脈衝雜訊通道使用裁切法以及最大似然解碼的效能比較
論文名稱(外文):Performance Comparison of Clipping and Maximum Likelihood Decoding Schemes for Linear Block Code over Impulse Noise Channels
指導教授:王藏億
指導教授(外文):Tsang-Yi Wang
學位類別:碩士
校院名稱:國立中山大學
系所名稱:通訊工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:36
中文關鍵詞:電力線通訊裁切法最大似然解碼線性區塊碼
外文關鍵詞:clipping methodpower line communicatiolinear block codesmaximum likelihood decoding
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  • 下載下載:1
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在電力線通訊中, 主要使得正交分頻多工系統效能降低的因素為脈衝雜訊。為了克服脈衝雜訊的障礙, 裁切法已被提出並證實為有效的方法。有別於傳統在頻域上的最大似然解碼方法, 本論文提出在時域上做最大似然解碼估測。在使用線性區塊碼和正交分頻多工的系統下,我們利用電腦模擬比較所提出的方法和文獻中的裁切法。模擬結果顯示, 本論文所提出的方法優於文獻中的裁切法。
The major degradation of the performance by OFDM technique in a power line communication system comes from impulse noises. In order to overcome the effect of impulse noises, a clipping method has been proposed and verified as an efficient technique. This paper, however, proposes a method by maximum likelihood decoding in the time domain instead of frequency domain in the traditional OFDM system. This paper then conducts computer simulation to compare the proposed scheme with the clipping method under the system, in which the linear block code and OFDM systems are utilized. The simulation result shows that the proposed method outperforms the clipping method proposed in the literature.
摘要 i
Abstract ii
1 序論 1
1.1 研究動機 1
1.2 研究方法 2
1.3 研究貢獻 2
1.4 論文架構 2
2 系統模型 3
2.1 正交分頻多工簡介 3
2.2 電力線通訊雜訊介紹 6
2.2.1 連續型雜訊 7
2.2.2 脈衝雜訊 7
2.2.3 數學模型 7
2.3 系統架構 8
2.4 脈衝雜訊模型 9
3 裁切法與最大似然解碼介紹 10
3.1 裁切法 10
3.2 最大似然解碼 12
4 裁切法與最大似然解碼應用 14
4.1 裁切法應用 15
4.2 最大似然解碼 16
5 模擬結果和分析 18
5.1 裁切法的模擬結果 18
5.2 最大似然解碼方法模擬結果 22
6 結論 26
參考文獻 27
[1] H. A. Suraweera, C. Chai, J. Shentu, and J. Armstrong, “Analysis of impulse noise mitigation techniques for digital television systems,” in Proc. 2003 Int. OFDM Workshop, pp.172-176.
[2] S. V. Zhidkov, “Analysis and comparison of several simple impulsive noise mitigation schemes for OFDM receivers,””IEEE Trans. Commun., pp. 5-9, Jan. 2008.
[3] J. Armstrong and H. A. Suraweera, “Impulse noise mitigation for OFDM using decision directed noise estimation,” in Proc. 2004 IEEE Int. Symp. Spread Spectrum Techniques and Applications, pp. 174-178.
[4] Der-Feng Tseng, Yunghsiang S. Han, Wai Ho Mow, Li-Chung Chang, and A. J. Han Vinck,“Robust Clipping for OFDM Transmissions over Memoryless Impulsive Noise Channels” IEEE Communication Letters, VOL. 16, NO. 7, July 2012
[5] IEEE Std 1901-2010, IEEE Standard for Broadband over Power Line Networks: Medium Access Control and Physical Layer Specifications, Dec. 2010.
[6] G. Ndo, P. Siohan, M.-H. Hamon, and J. Horard, “Optimization of turbo decoding performance in the presence of impulsive noise using soft limitation at the receiver side,” in Proc. 2008 IEEE Global Telecom. Conf., pp. 1-5.
[7] M. Ghosh, “Analysis of the effect of impulse noise on multicarrier and single carrier QAM systems,” IEEE Trans. Commun., pp. 145-147, Feb 1996.
[8] D. Middleton, “Canonical and quasi-canonical probability models of class A interference,” IEEE Trans. Electromagn. Compat., pp. 76-106, May 1983.
[9] H. C. Ferreira, L. Lampe, J. Newbury, and T. G. Swart, Power Line Communications: Theory and Applications for Narrowband and Broadband Communications over Power Lines. John Wiley and Sons, 2010.
[10] W. Henkel and F. Hu, “OFDM and analog RS/BCH codes.” Available:
http://trsys.faculty.jacobs-university.de/english/ hfn/OFDM05 henkel hu.pdf.
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