臺灣博碩士論文加值系統

本論文提出兩種近似之效能數學表示式，研究具有最佳路徑選取技術的放大與傳送式(Amplify-and-Forward; AF)之雙段式多重無線接引系統架構，其在瑞雷衰落(Rayleigh Fading)疊加對數常態衰落(Log-normal Fading)通道環境下的總體表現分析。就統計的面向而言，複合瑞雷分佈與對數常態分佈的統計特性是一個非封閉型態(Non-closed form)的數學表示式，以致於到目前為止還未能充分地被套用在無線接引系統上做充分的研究。因此在本論文中以平均訊號雜訊比遠大於系統設定的門檻值(Threshold)為基礎條件，推導出具有封閉型(Closed-form)態的機率密度函數(PDF)、累積分佈函數(CDF)和動差生成函數(MGF)之數學導式。利用這些數學導式，進而可以演算出封閉型態的中斷機率(Outage Probability)與平均誤碼率(BER)之效能分析導式。最後，以系統模擬數值和非封閉型態的精確值為基準，驗證本論文所演算出的數學導式，並說明其可行性。本論文所提出的方法提供了簡單且有效的近似來估計實際的遮蔽效應對系統效能的影響，從而運用在實際的網路設計上之效能表現的有效功率輸出。

A performance analysis for amplify-and-forward dual-hop multi-hop relaying wireless system with best selection over Rayleigh plus log-normal (composite) fading channel is presented. Two approached expressions using end-to-end relaying link and maximum probability of dual-hop relay are proposed and compared for bit error rate (BER) and outage probabilities. In this paper, the closed-form analytical expressions for the probability density function (PDF), cumulative distribution function (CDF), and the moment-generating function (MGF) of end-to-end SNR of the composite fading environments obtained by the condition that the large mean power to targeted threshold. Using these expressions, the closed-form expressions for the outage probability and average bit error rate are derived. Numerical simulation and non-closed mathematical expression are finally provided to verify the correctness of the analysis in this paper. The proposed scheme provides a simple and efficient approach to evaluate the impact of the shadowing effect and thus analytical optimization and relaying output power margin becomes feasible in real system design application.

摘要 I
Abstract II
目次 III
圖目次 IV
表目次 V
第一章 緒論 1
1.1 研究動機 1
1.2 研究目的 1
1.3 研究方法 2
1.4 無線接引技術之簡介 3
1.5 論文架構 6
第二章 雙段式多重無線接引系統與通道之數學模型 7
2.1 系統架構 7
2.2 瑞雷衰落通道 9
2.3 遮蔽衰落通道 10
2.4 複合衰落通道 11
第三章 系統效能之數學導式 14
3.1 Fenton-Wilkinson近似法則 14
3.2 中斷機率 15
3.3 誤碼率 20
第四章 模擬結果與效能分析 23
4.1 通道模型與模擬架構 23
4.2 系統中斷機率之模擬與分析結果 27
4.3 系統誤碼率之模擬與分析結果 31
第五章 結論 35
參考文獻 36
附錄 A 38
附錄 B 44
附錄 C 50

[1] F. Hansen and F. I. Meno, “Mobile Fading－Rayleigh and Lognormal Superimposed,” IEEE Transactions on Vehicular Technology, vol. 26, no. 4, pp. 332-335, 1977.
[2] Shih-Hsin Huang and John F. An, “Analysis Framework for Cooperative Multi-Relaying over In-door Composite Fading Environments”, 2nd IEEE/CIC International Conference on Communications in China, 2013.
[3] John F. An, Hsin-Yin Hunag, and Shih-Hsin Huang, “Performance analysis of Dual-hop Multi-relaying System over Rayleigh plus Log-normal Fading Channel”, European Wireless, 2013.
[4] Kan Zheng, Bin Fan, Zhangchao Ma, Guangyi Liu, Xiaodong Shen, and Wenbo Wang, “Multihop Cellular Networks toward LTE-advanced,” IEEE Vehicular Technology Magazine, vol. 4, no. 3, pp. 40-47, 2009.
[5] Long Le and Hossain. E., “Multihop Cellular Networks: Potential Gains, Research Challenges, and a Resource Allocation Framework”, IEEE Communications Magazine, vol. 4, no. 9, 2007.
[6] J. Hu and X. Chen. “Performance Analysis of Amplify-and-Forward Non-Fixed Relays Cooperative Network with Relay Selection,” Network with Relay Selection. Journal of Computational Information Systems, pp. 2901-2908, 2010.
[7] Torabi. M, Ajib. W, and Haccoun. D, “Performance Analysis of Amplify-and-Forward Cooperative Networks with Relay Selection over Rayleigh Fading Channels,” IEEE Vehicular Technology Conference, pp.1-5, 2009.
[8] S. Ikki and M.H. Ahmed, “Performance Analysis of Cooperative Diversity Wireless Networks over Nakagami-m Fading Channel,” IEEE Communications Letter, vol.11, no.4, pp.334-336, 2007.
[9] Weiguang Li, Jun-Bo Wang, Ming Chen, “Outage Probability of Dual-hop Amplify-and-Forward Relaying Systems over Shadowed Nakagami-m Fading Channels,” IEICE Transactions, vol. E91-A, no. 11, pp.3403-3405, 2008.
[10] Yang Q. H., Zhong Y. J., Kwak K S, “Outage Probability of Opportunistic Amplify-and-Forward Relaying in Nakagami-m Fading Channels”, ETRI Journal, vol. 30, no. 4, 2008.
[11] Wei-Guang Li and Ming Chen, “Outage Probability of Cooperative Diversity System with Relay Selection over Shadowed Nakagami-m Fading Channels”, Communication Networks and Services Research Conference (CNSR), 8th Annual, pp. 45-49, 2010.
[12] Adinoyi, A. , Yijia Fan, Yanikomeroglu, H., Poor, H.V., Al-Shaalan, F. “Performance of Selection Relaying and Cooperative Diversity”, Wireless Communications, IEEE Transactions on, vol. 8, no. 12, pp. 5790-5795, 2009.
[13] Hasna, M.O. and Alouini, M.-S., “End-to-End Performance of Transmission Systems with Relays over Rayleigh-Fading Channels”, IEEE Transactions on Wireless Communications, vol.2, no.6, 2003.
[14] Hasna, M.O. and Alouini, M.-S. “A Performance Study of Dual-hop Transmissions with Fixed Gain Relays”, IEEE Transactions on Wireless Communications, vol.3, no.6, 2004.
[15] Ashkan Kalantari, MohammadAli Mohammadi, Mehrdad Ardebilipour, “Performance Analysis of Opportunistic Relaying over Imperfect Non-identical Log-normal Fading Channels,” IEEE 22nd International Symposium on PIMRC, pp. 1909-1913, 2011.
[16] M. Di Renzo, F. Graziosi, and F. Santucci, “A Comprehensive Framework for Performance Analysis of Cooperative Multi-Hop Wireless Systems over Log-Normal Fading Channels”, IEEE Transactions on Communications, vol. 58, no. 2, pp. 531-544, 2010.
[17] M. Dohler and Y. Li, “Cooperative Communications: Hardware, Channel &; PHY,” John Wiley &; Sons, 2010.
[18] Andrea Goldsmith, “Wireless Communications,” Cambridge University Press, 2005.
[19] M. K. Simon, M.-S. Alouini, “Digital Communication over Fading Channels,” 2nd edition, John Wiley &; Sons, 2005.
[20] W. C. Jakes, Ed., “Microwave Mobile Communication”. New York: Wiley, pp. 70-72, 1974.
[21] P. Mohana Shankar, “Fading and Shadowing in Wireless Systems”, Springer New York Dordrecht Heidelberg London, pp. 218-219, 2012.
[22] Gradshteyn, I. S., Ryzhik, I. M., “Table of Integrals, Series, and Products”, Elsevier Academic Press, Amsterdam, 2007.
[23] G. L. Stuber, “Principles of Mobile Communication”, Kluwer Academic Publishers, 2002.