Responsive image
博碩士論文 etd-0730104-170157 詳細資訊
Title page for etd-0730104-170157
論文名稱
Title
M階分碼多工系統之通用分析法
An Unified Approach to Analyze a Generic M-ary CDMA System
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
182
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2004-07-14
繳交日期
Date of Submission
2004-07-30
關鍵字
Keywords
分碼多工、展頻
M-ary, CDMA
統計
Statistics
本論文已被瀏覽 5645 次,被下載 0
The thesis/dissertation has been browsed 5645 times, has been downloaded 0 times.
中文摘要
在本篇論文中,我們提出種有別於一般傳統CDMA的新架構,這是一種藉由增加使用者使用正交展頻碼的個數的變化性來提高頻寬使用效率的系統,當使用者使用的正交展頻碼個數越多,其信號星雲圖中的信號點也隨之增加,使用者搭配所需要的展頻碼個數,進一步地提昇系統的傳輸速率,並使用最大似然函數法則來檢測信號,使系統的效能達到最佳。
我們針對所提出的系統架構,以模擬來評估系統效能,並分析在單路徑、多路徑分別在AWGN及Nakagami通道中的性能分析。
Abstract
In this thesis we propose and study a new CDMA architecture, namely parallel-transmission M-ary CDMA system. By using variable combination patterns of spreading codes, we can greatly improve the system bandwidth utilization. The more spreading codes used in each user, the higher bandwidth efficiency can achieve with more bits packed in each symbol. In addition, a user can adjust transmission data rate easily by changing the number of spreading codes used to fit varying system operational requirements. In this thesis, we should use maximum likelihood detection algorithms for signal detection to ensure an optimal performance in terms of bit error rate.
The system performance of such a parallel-transmission M-ary CDMA system is analytically studied in both AWGN and Nakagami channels in the presence of multiple access interference and multi-path interference. The both theoretical analysis and computer simulations show that the scheme works pretty well under various channel condition.
目次 Table of Contents
目錄
變數列表
圖目錄
表目錄
第一章 導論
1.1研究動機
1.2論文架構
第二章 理論介紹
2.1最大事後機率法則
2.2聯合檢測法
第三章 在單路徑下BPSK M-ARY CDMA SYSTEM 效能分析
3.1信號座標點的選擇
3.2在非同步下、AWGN通道中、單路徑多用戶之性能分析
3.2.1BPSK M-ary System模型
3.2.2多用戶干擾分析
3.2.3 BPSK M-ary CDMA System錯誤率分析
3.2.4效能分析
3.3 在非同步下、NAKAGAMI-M通道中、單路徑多用戶之性能分析
3.3.1 Nakagami-m衰減通道模型
3.3.2 多用戶干擾分析
3.3.3 BPSK M-ary CDMA System錯誤率分析
3.3.4 效能分析
第四章 BPSK M-ARY CDMA SYSTEM在多重路徑下的效能分析
4.1在非同步下採用傳統接收機的效能分析
4.1.1在非同步下BPSK M-ary CDMA System系統模型
4.1.2在多路徑下多、用戶干擾分析
4.1.3在多路徑下BPSK M-ary CDMA System 錯誤率分析
4.1.4效能分析
4.2在非同步下採用RAKE接收機的效能分析
4.2.1在非同步下採用RAKE接收機的系統模型
4.2.2多用戶干擾的分析
4.2.3採用RAKE接收機的錯誤率分析
4.2.3.1 EGC接收機的錯誤率分析
4.2.3.2 MRC接收機的錯誤率分析
4.2.4效能分析
4.3在非同步下NAKAGAMI衰減通道中採用MRC RAKE接收機下的性能分析
4.3.1效能分析
第五章 結論與討論
參考文獻 References
[1] Park, J.; Lim, J.-H. , Gelfand, S.B., “Coding across multicodes and time in CDMA
systems for dispersive channels”, Wireless Communications and Networking,
2003. WCNC 2003. 2003 IEEE , Volume: 1 , 16-20 March 2003 Pages:300 –
305 vol.1.
[2] Xiaojing Huang; Yunxin Li, “The multicode interleaved DSSS system for high
speed wireless digital communications”, Communications, 2001. ICC 2001. IEEE
International Conference on , Volume: 10 , 11-14 June 2001 Pages:2990 - 2994
vol.10.
[3] Jun Chen; Jiangzhou Wang; Sawahashi, M., “A multi-stage MCI cancellation
receiver for multicode CDMA systems”, Vehicular Technology Conference, 2001.
VTC 2001 Fall. IEEE VTS 54th , Volume: 2 , 7-11 Oct. 2001 Pages:586 - 590
vol.2.
[4] Guo, N.; Milstein, L.B., “Uplink performance evaluation of multicode
DS/CDMA systems in the presence of nonlinear distortions”, Selected Areas in
Communications, IEEE Journal on , Volume: 18 , Issue: 8 , Aug. 2000
Pages:1418 – 1428
[5] Kuganesan, P.; Letaief, K.B., “High-speed data transmission with multicode
modulation and turbo-codes for wireless personal communications”,
Communications, 1997. ICC 97 Montreal, 'Towards the Knowledge Millennium'.
1997 IEEE International Conference on , Volume: 2 , 8-12 June 1997
Pages:959 - 963 vol. 2 .
[6] Bin Xia; Jiangzhou Wang, “QAM with interference cancellation for high-speed
multicode CDMA”, Spread Spectrum Techniques and Applications, 2002 IEEE
Seventh International Symposium on , Volume: 2 , 2-5 Sept. 2002 Pages:430 –
434 vol.2
[7] Mingxi Fan; Thit Minn; Kai-Yeung Siu, “A simple constant envelope
modulation scheme for orthogonal multicode CDMA system”, Info-tech and
Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences
on , Volume: 2 , 29 Oct.-1 Nov. 2001 Pages:309 - 316 vol. 2
[8] Kuganesan, P.; Letaief, K.B.; Yue Chen, “Multicode modulation for high-speed
wireless data transmission”, Personal, Indoor and Mobile Radio Communications,
1997. 'Waves of the Year 2000'. PIMRC '97., The 8th IEEE International
Symposium on , Volume: 2 , 1-4 Sept. 1997 Pages:457 - 461 vol.2
[9] C.-L.I and R. D. Gitlin, “Multi-code CDMA wireless personal communications
networks,” in Proc. IEEE Int. Conf. Commun. (ICC’95), Seattle, WA, vol. 2, pp.
1060–1064.
[10] P. K. Enge and D. V. Sarwate, “Spread-spectrum multiple-access performance of
orthogonal codes: Linear receivers,” IEEE Trans. Commun., vol. COM-35, pp.
1309–1319, Dec. 1987.
[11] N. Guo and L. B. Milstein, “On rate-variable multidimensional DS/SSMA
with dynamic sequence sharing,” IEEE J. Select. Areas Commun., vol. 17,
May 1999.
[12] John. G. Proakis, “Digital Communications”, 4rd ed. New York:McGraw-Hill,
2001.
[13] S. Haykin, Communication Systems, 4rd ed. New York: John Wiley & Sons,
2001.
[14] Marvin K. Simon Mohamed-Slim Alouini, “Digital Communication over
Fading Channels” , A Wiley-Interscience Publication.
[15] Eng, T.; Milstein, L.B,”Coherent DS-CDMA performance in Nakagami
multipath fading”, Communications, IEEE Transactions on , Volume: 43 , Issue:
234 , Feb./March/April 1995 Pages:1134 - 1143
[16] S. Sasaki, H. Kikuchi, H. Watanabe, and J. Zhu, “Performance evaluation
of parallel combinatory SSMA systems in Rayleigh fading channel,” in Proc.
IEEE 3rd Int. Symp. Spread Spectrum Techniques and Applications
(ISSSTA’94), Oulu, Finland, vol. 1, pp. 198–202.
[17] S. Verdú, Multiuser Detection. Cambridge, U.K.: Cambridge Univ. Press,
page 101, 1998.
[18] Dong In Kim;”Analysis of a direct-sequence CDMA mobile radio system
with reduced set of code sequences” Vehicular Technology, IEEE Transactions
on , Volume: 44 Issue: 3 , Aug. 1995 Page(s): 525 -534
電子全文 Fulltext
本電子全文僅授權使用者為學術研究之目的,進行個人非營利性質之檢索、閱讀、列印。請遵守中華民國著作權法之相關規定,切勿任意重製、散佈、改作、轉貼、播送,以免觸法。
論文使用權限 Thesis access permission:校內校外均不公開 not available
開放時間 Available:
校內 Campus:永不公開 not available
校外 Off-campus:永不公開 not available

您的 IP(校外) 位址是 3.81.57.77
論文開放下載的時間是 校外不公開

Your IP address is 3.81.57.77
This thesis will be available to you on Indicate off-campus access is not available.

紙本論文 Printed copies
紙本論文的公開資訊在102學年度以後相對較為完整。如果需要查詢101學年度以前的紙本論文公開資訊,請聯繫圖資處紙本論文服務櫃台。如有不便之處敬請見諒。
開放時間 available 已公開 available

QR Code