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Performance Evaluation of Two Novel Modulation Schemes for M-ary TH-UWB Systems
|關鍵字:||超寬頻;ultra-wideband (UWB);跳時;多使用者干擾;錯誤率分析;無線通訊;time-hopping (TH);multiple access interference (MAI);error analysis;wireless communication||出版社:||電機工程學系所||引用:||BIBLIOGRAPHY  Moe Z.Win and Robert A Scholtz, "Ultra-wide bandwidth time-hopping spread spectrum impulse radio for wireless multiple-access communications." IEEE Trans. commun., vol. 40, pp. 679-691, April. 2000.  G. Durisi and S. Benedetto, “Performance evaluation of TH-PPM UWB systems in the presence of multiuser interference,” IEEE Commun. Lett., vol. 7, no. 5, pp. 224-226, May 2003.  B.Hu and N. C. Beaulieu, “Accurate evaluation of multiple access performance in TH-PPM and TH-BPSK systems,” IEEE Tran. Commun., vol., no. 10, pp. 1758-1766, Oct. 2004.  B.Hu and N. C. Beaulieu, “Accurate performance evaluation of time-hopping and direct-sequence UWB systems in multiuser interference,” IEEE Trans. commun., vlo 53., no. 6, June 2005.  S.Niranjayan, A. Nallanathan and B. Kannan, “Modeling of multiple access interference and SER derivation for M-ary TH-PAM /PPM UWB systems.” Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st Volume 3, 30 May-1 June 2005 Page(s):2008 - 2012 Vol. 3  S.Niranjayan, A. Nallanathan and B. Kannan, “Modeling of multiple access interference and BER derivation for TH and DS UWB multiple access systems.” IEEE Trans. on wireles Commun., vol. 5, no. 10, October 2006, pp. 2794-2804  Zhan Yu, Tjeng Thiang Tjhung and Chin, C.C, "Performance of multiple access multicarrier MFSK system over Rician fading channels." Vehicular Technology, IEEE Transactions on Volume 54, Issue 3, May 2005 Page(s): 1091-1102 55  Mohammad Azizur Rahman, Shigenobu Sasaki, Jie Zhou and Hisakazu Kikuchi, "Error analysis for a hybrid DS/TH impulse radio UWB multiple access system." Ultra-Wideband, 2005. ICU 2005. 2005 IEEE International Conference on 5-8 Sept. 2005 Page(s): 5 pp.  Pasand, R.; Khalesehosseini, S; Nielsen, J.; Sesay, A; "Exact evaluation of M-ary TH-PPM UWB systems on AWGN channels for indoor multiple-access communications." Communications, IEE Proceedings, Volume 153, Issue 1, 2 Feb. 2006 Page(s):83-92.  Kyundyoung Ko; Myonghee Park; Daesik Hong; "Performance analysis of asynchronous MC-CDMA systems with a guard period in the form of a cyclic prefix." Communications, IEEE Transactions on Volume 54, Issue 2, Feb. 2006 Page(s):216-220||摘要:||
在這篇論文, 我們提出了兩個新的跳時超寬頻系統. 第一個新系統稱為“沒有細片新M-元跳時脈衝位置調變超寬頻系統”; 第二個新系統稱為“多脈衝波新M-元跳時脈衝位置調變超寬頻系統”. 兩個新系統的模擬和分析是在有多個使用者干擾的白色高斯雜訊通道中進行. 系統分析的方法是以機率中的特性方程式為基礎, 並且這個方法比傳統高斯分析的方法準確很多, 高斯分析方法很明顯地低估了符號間錯誤率. 兩個新系統和傳統系統的比較是以符號間錯誤率來判別系統的優劣. 結果顯示兩個新系統的效能會比傳統系統優越很多, 並且第二個新系統的參數有更多的選擇來調整. 所以在效能上第二個新系統會比第一個新系統好.
In the thesis, we propose two new kinds of time-hopping (TH) ultra-wideband (UWB) systems. The first new system is called "Without chip width (WCW) new M-ary TH-PPM UWB system" the second new system is called "Multi-pulses (MP) new M-ary TH-PPM UWB system". The simulations and analyses of two new systems are presented in an additive white Gaussian noise environment with multiple-access interference. The analysis method is based on characteristic function, and the method is more accurate than conventional Gaussian approximation method which definitely underestimates the symbol error rates (SERs). The performance of two new systems and conventional TH-PPM UWB system are compared in terms of SER. It is shown that the two new system outperform the conventional M-ary TH-PPM UWB system, and the second new system has more choices of parameter to adjust than the first one, so the SER performance of the second new system can be better than the first new system.
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