跳到主要內容

臺灣博碩士論文加值系統

(34.204.180.223) 您好!臺灣時間:2021/08/03 23:21
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:賴偉勝
研究生(外文):Weei-Shehng Lai
論文名稱:超寬頻脈衝無線電在多重進接無線通訊之研究
論文名稱(外文):Ultra WideBand Impulse Radio in Multiple Access Wireless Communications
指導教授:萬欽德
指導教授(外文):Chin-Der Wann
學位類別:碩士
校院名稱:國立中山大學
系所名稱:電機工程學系研究所
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:2004
畢業學年度:92
語文別:中文
論文頁數:76
中文關鍵詞:多重進接干擾跳時展頻脈衝無線電超寬頻
外文關鍵詞:Probabilistic Data AssociationMultiple Access InterferenceTime-Hopping Spread SpectrumImpulse RadioUltra WideBand
相關次數:
  • 被引用被引用:0
  • 點閱點閱:101
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
超寬頻脈衝無線電(Ultra Wideband impulse radio; UWB-IR)技術,在高速率的資料傳輸及多重進接的系統架構上,十分引人重視。因此本論文,將超寬頻(UWB)的訊號以跳時展頻(Time-hopping spread spectrum; THSS)的方式,架構在無線的多重進接通信系統上,在此架構環境,研究多重進接干擾的影響。本論文將多重進接干擾的影響分為二部份分別探討,第一部份是在傳統的相關性接收器上,分析多重進接干擾,並以跳時碼在不同的多重進接系統架構上,探討其影響且分析問題所在。在第二部份,由於傳統的相關性接收器在多重進接通道中,偵測使用者資料時,會因為多重進接的干擾,使系統的效能變差,並且會限制了系統的容量。於此部份是運用PDA(Probabilistic data association)多使用者偵測器技術消除多重進接干擾的方式,以此技術來改善跳時多重進接系統之效能,並且以電腦模擬的方式印證改善後的系統效能,再與傳統的相關性接收器和其他多使用者偵測器比較其結果。在最後的模擬結果中,可看到在系統滿載的狀況下,PDA偵測器對系統的效能可獲得很大的改善。
Ultra-Wideband impulse radio (UWB-IR) technology is an attractive method on multi-user for high data rate transmitting structures. In this thesis, we use the ultra wideband (UWB) signal that is modulated by the time-hopping spread spectrum technique in a wireless multiple access environments, and discuss the influences of multiple access interference. We discuss two parts of the influences of multiple access interference in this thesis. The first, we analyze the multiple access interferences on the conventional correlation receiver, and discuss the influences by using the time hopping code on different multiple access structures. The second, we know that the performances of user detection and system capacity would be degraded by the conventional correlation receiver in the multiple access channels. The Probabilistic Data Association(PDA) multi-user detection technology can eliminate multiple access interferences in this part. We will use this method to verify the system performance through the computer simulations, and compare to other multi-user detectors with convention correlation receivers. Finally, the simulation results show that the performance of the PDA multi-user detections is improved when the system is full loaded.
誌謝.....................................................i
中文摘要.................................................ii
英文摘要.................................................iii
目錄.....................................................iv
圖目錄...................................................vi
表目錄...................................................x
第一章 序論..............................................1
1.1 文獻探討.............................................1
1.2 研究動機.............................................3
1.3 論文結構.............................................4
第二章 超寬頻多重進接系統................................5
2.1 超寬頻多重進接系統的數學模型.........................5
2.1.1 傳送訊號的數學模型.................................5
2.1.2 接收訊號的數學模型.................................9
2.1.3 接收端之樣板訊號的數學模型.........................9
2.2 超寬頻多重進接系統之架構模型.........................12
2.3 同步與非同步多重進接系統環境之設定架構...............13
2.3.1 使用者同步的設定環境...............................14
2.3.2 使用者非同步的設定環境.............................14
第三章 超寬頻多重進接系統之效能分析......................17
3.1 研究動機.............................................17
3.2 接收端之能量分佈分析.................................18
3.3 多重進接系統效能的數學分析...........................22
3.3.1 精確的位元錯誤率計算...............................22
3.3.2 近似的位元錯誤率計算...............................25
3.4 電腦模擬分析與討論...................................27
第四章 跳時脈衝無線電之多使用者偵測器技術................40
4.1 系統模型與架構.......................................41
4.2 最佳多使用者偵測器...................................44
4.3 解相關多使用者偵測器.................................48
第五章 PDA 偵測器於超寬頻多重進接系統之效能..............51
5.1 研究動機.............................................51
5.2 PDA 多使者偵測器技術.................................51
5.2.1 PDA 基本架構.......................................52
5.2.2 PDA 演算法.........................................53
5.3 電腦模擬分析與討論...................................58
第六章 結論與建議........................................71
參考文獻.................................................73
縮寫.....................................................76
[1] M. Z. Win and R. A. Scholtz, “Ultra-wide bandwidth
time-hopping spread-spectrum impulse radio for wireless
multiple-access communications,” IEEE Transactions on
Communications, vol. 48, pp. 679-691, April 2000.
[2] R. A. Scholtz, “Multiple access with time hopping
impulse modulation,” IEEE Military Communications
Conference, pp. 11-14, October 1993.
[3] M. Z. Win and R. A. Scholtz, “Impulse radio: How it
works,” IEEE Communications Letters, vol. 2, pp. 36 -
38, February 1998.
[4] F. Ramiez-Mireles and R. A. Scholtz, “Multiple-access
with time hopping and block waveform PPM modulation,”
IEEE International Conference on Communications, vol.
2, pp. 775 - 779, June 1998.
[5] L. Zhao and A. M. Haimovich, “The capacity of an UWB
multiple-access communications system,” IEEE
International Conference on Communications, vol. 3, pp.
1964-1968, May 2002.
[6] F. Ramirez-Mireles and R. A. Scholtz, “Multiple-access
performance limits with time hopping and pulse position
modulation,” IEEE Military Communications Conference,
vol. 2, pp. 529-533, October 1998.
[7] G. Durisi and S. Benedetto, “Perforance evaluation of
TH-PPM UWB system in the presence of multiuser
interference,” IEEE Communications Letters, vol. 7,
pp. 224-226, May 2003.
[8] G. Durisi and S. Benedetto, “Performance evaluation
and comparison of different modulation schemes for uwb
multiaccess system,” IEEE International Conference on
Communications, vol. 3, pp. 2187-2191, May 2003.
[9] G. Durisi and G. Romano, “On the validity of Gaussian
approximation to characterize the multiuser capacity of
UWB TH-PPM,” IEEE Conference on Ultra Wideband System
and Technologies, pp. 157-162, May 2002.
[10]A. Taha and K. M. Chugg, “A theoretical study on the
effects of interference on UWB multiple access impulse
radio,” IEEE Conference on Ultra Wideband System and
Technologies, pp. 728-732, May 2002.
[11]S. Verdu., Multiuser detection. Cambridge University
Press, 1998.
[12]E. Fishler. and V. Poor, “Low-complexity multiuser
detector for time hopping impulse radio systems,” IEEE
Transaction on Signal Processing, pp. 1-27, Setp 2002.
[13]Y. C. Yoon and R. Kohno, “Optimum multi-user detection
in Ultra-Wideband (UWB) multiple-access communication
systems,”IEEE International Conference on
Communications, vol. 2, pp. 812-816, May 2002.
[14]Q. Li and L. A. Rusch, “Hybrid rake / multiuser
receivers for UWB,”IEEE Radio and Wireless Conference
Proceedings, pp. 203-206, August 2003.
[15]J. G. Proakis, Digital communications. McGraw-Hill
Book Company, 4th ed., 1983.
[16]J. Luo, K. R. Pattipati, P. K. Willett, and F.
Hasegawa, “Near-optimal multiuser detection in
synchronous CDMA using probabilistic data
association,” IEEE Communications Letters, vol. 5, pp.
361-363, September 2001.
[17]Y.-P. Nakache and A. F. Molisch, “Spectral shape of
UWB signals influence of modulation format, multiple
access scheme and pulse shape,” The 57th IEEE
Semiannual Vehicular Technology Conference, vol. 4, pp.
2510 - 2514, April 2003.
[18]B. Parr, B. Cho, K. Wallace, , and Z. Ding, “A novel
ultra-wideband pulse design algorithm,” IEEE
Communications Letters, vol. 7, pp. 219-221, May 2003.
[19]M. S. Iacobucci and M.-G. D. Benedetto, “Multiple
access design for impulse radio communication
systems,” IEEE International Conference on
Communications, vol. 2, pp. 817 - 820, 2002.
[20]A. Taha and K. M. Chugg, “Multipath diversity
reception of wireless multiple access time-hopping
digital impulse radio,” IEEE Conference on Ultra
Wideband Systems and Technologies, pp. 283-287, May
2002.
[21]A. Taha and K. M. Chugg, “On designing the optimal
template waveform for UWB impulse radio in presence of
multipath,” IEEE Conference on Ultra Wideband Systems
and Technologies, pp. 41-45, May 2002.
[22]M. Z. Win and R. A. Scholtz, “On the energy capture of
ultra-wide bandwidth signals in dense multipath
environments,” IEEE Communications Letters, vol. 2,
pp. 245-247, September 1998.
[23]I. Guvenc and H. Arlan, “Design and performance
analysis of TH sequences for UWB-IR systems,” IEEE
International Conference on Communications, 2004.
[24]C. M. Canadeo, M. A. Temple, R. O. Baldwin, and R. A.
Raines, “Code selection for enhancing UWB multiple
access communication performance using TH-PPM and DS-
BPSK modulations,” IEEE Wireless Communications
Networking Conference, New Orleans, March 2003.
[25]S. Haykin, Communication systems. John Wiley Sons, 4th
ed., 2001.
[26]M. K. Varanasi, “Decision feedback multiuser
detection: a systematic approach,” IEEE Transactions
on Information Theory, vol. 45, pp. 219-240, January
1999.
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top