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研究生:石鴻揚
研究生(外文):Hong-Yang Shi
論文名稱:錯誤更正碼應用於多音頻干擾下之跳頻/MFSK通訊系統之效能
論文名稱(外文):Performance Evaluation of Frequency Hopping / MFSK System in Multi-tone Jamming Noise with Error Control Coding
指導教授:劉玉蓀
指導教授(外文):Yu-Sun Liu
口試委員:尤信程李穎
口試委員(外文):Shing-Chern YouYing Li
口試日期:2007-07-23
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電腦與通訊研究所
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:2007
畢業學年度:95
語文別:中文
論文頁數:53
中文關鍵詞:多音頻干擾跳頻MFSK摺積碼渦輪碼瑞雷衰減
外文關鍵詞:Multi-tone Jamming NoiseFrequency HoppingMFSKconvolutional codeturbo codeRayleigh fading
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本篇論文主要是探討在多音頻干擾(Multi-tone Jamming, MTJ)環境下的跳頻/MFSK (Frequency Hopping / M-ary Frequency Shift Keying, FH / MFSK)通訊系統,如何藉由錯誤更正碼來更正由多音頻干擾所引起的錯誤。本文主要採用的錯誤更正碼為摺積碼(convolutional code)、渦輪碼(turbo code)和里德-所羅門碼(Reed-Solomon code),搭配使用本文所提出經過改良的各種軟式路徑值(soft metric)和常見的硬式解碼方法來做效能模擬。文中以瑞雷衰減(Rayleigh fading)和白色高斯雜訊(AWGN)模擬無線寬頻傳輸的通道。藉由電腦模擬的結果可知,在本系統中,使用位元交錯器會降低摺積碼和渦輪碼的效能; 然而,沒有位元交錯的摺積碼和沒有位元交錯的符元渦輪碼的效能會高於里德-所羅門碼的效能。沒有位元交錯的符元渦輪碼為應用於本論文系統中效能最好的錯誤更正碼。
In this thesis, we investigate how to correct error caused by multi-tone jamming (MTJ) in frequency hopping / MFSK systems for Rayleigh fading channel. The error control codes considered in this thesis include convolutional codes, turbo codes, and Reed-Solomon codes. We propose several soft-decoding methods in this thesis and conventional hard decisions with convolutional codes and turbo codes are also considered. Simulation results show that bit-interleaving degrades the performance of convolutional codes and turbo codes in these systems. Moreover, both convolutional codes without bit-interleaving and turbo codes without bit-interleaving outperform Reed-Solomon codes with error-only decoding. Finally, the symbol-interleaving turbo code without bit-interleaving is the best error correction coding technique among the proposed methods.
中文摘要 …..i
英文摘要 .….ii
誌謝 .….iii
目錄 …iv
表目錄 …v
圖目錄 .….vi
第一章 緒論 .….1
第二章 多音頻干擾下的跳頻/MFSK通訊系統 3
2.1 系統架構 3
2.1.1 傳送端 4
2.1.2 傳送通道 7
2.1.3 多音頻干擾模型 7
2.1.4 接收端 8
2.2 軟式路徑值 11
第三章 在MTJ環境下的跳頻/MFSK系統結合摺積碼的效能模擬 13
3.1 摺積碼編碼器 13
3.1.1 位元交錯摺積碼 14
3.1.2 位元交錯摺積碼搭配其他硬式解碼方法 15
3.2 沒有位元交錯摺積碼 16
3.3 摺積碼的模擬結果 16
第四章 在MTJ環境下的跳頻/MFSK系統結合渦輪碼的效能模擬 29
4.1 渦輪碼編碼器 29
4.2 渦輪碼解碼器 30
4.3 位元交錯渦輪碼 30
4.4 沒有位元交錯的符元渦輪碼 32
4.5 渦輪碼的模擬結果 33
4.6 摺積碼、渦輪碼和RS碼模擬結果比較 48
第五章 結論 50
參考文獻 51
作者簡介 .….53
書籍
[1]S. Haykin, “Communication Systems 4th Ed,” Wiley, 2000.
[2]S. Lin and D.J. Costello, “Error Control Coding: Fundamental and
Application,” Englewood Cliffs, NJ :Prentice Hall,1989.
期刊論文
[3]U.-C. Fiebig and P. Robertson, ”Soft-decision and erasure decoding in fast
frequency-hopping systems with convolutional, turbo, and Reed-Solomon
codes,” IEEE Trans. Commun., vol. 47, pp. 1646-1654, Nov. 1999.
[4]Q. Wang, T. A. Gulliver, V. K. Bhargava, and E. B. Felstead, “Coding For Fast Frequency Hopped Noncoherent MFSK Spread Spectrum Communications Under Worst Case Jamming,”in MILCOM ‘ 88, vol.1, pp. 299-305, Oct. 1988.
[5]Y. Han, K. C. Teh, “Performance Study of Suboptimum Maximum-Likelihood Receivers for FFH/MFSK Systems With Multitone Jamming Over Fading Channels,” IEEE Trans. Veh. Technol., vol.54, pp. 82-90, Jan. 2005.
[6]J. Wang and C. Jiang, “Analytical Study of FFH Systems with Square-Law Diversity Combining in the Presence of Multitone Interference,” IEEE Trans. Commun., vol.48, pp. 1188-1196, Jul. 2000.
[7]Y.-S. Shen and S.-L. Su, “Performance Analysis of an FFH/BFSK Receiver With Ratio-Statistic Combining in a Fading Channel With Multitone Interference,” IEEE Trans. Commun., vol.51, no.10, pp.1643-1648, Oct. 2003.
[8]C. Jiang and J. Wang, “Performance Analysis of FFH/MFSK Receivers With Self-Normalization Combining in the Presence of Multitone Jamming,” IEEE
Trans. Veh. Technol., vol. 51, no. 5, pp. 1120-1127, Sept. 2002.
[9]C. Berrou, and A. Glavieux, “Near optimum error correcting coding and decoding Turbo-codes,” IEEE Trans. Commun., vol. 44, no. 10, pp. 1261-1271, 1996.
[10]J. P. Woodard and L. Hanzo, “Comparative Study of Turbo Decoding Techniques : An Overview,” IEEE Trans. Veh. Technol., vol. 49, no. 6, pp. 220-2233, Nov. 2000.
[11]P. Frenger, P. Ottosson, and T. Ottosson, “Convolutional codes with optimum distance spectrum,” IEEE Commun. Letters, vol. 3, no. 11, pp. 317-319, Nov,
1999.
[12]S. Benedetto, R. Garello, and G. Montorsi, “A search for good convolutional codes to be used in the construction of turbo codes” IEEE Trans. Commun., vol.46, no. 9, pp.1101-1105, Sep. 1998.
[13]K. Cheun, and W. E. Stark, “Performance of robust metrics with convolutional coding and diversity in FHSS system under partial-band noise jamming,” IEEE Trans. Commun., vol.41, no. 1, pp.200-209, Jan. 1993.
學位論文
[14] 郭曜銘,錯誤更正碼應用於快速跳頻/MFSK通訊系統之效能分析,碩
士論文,國立台北科技大學電腦與通訊研究所,台北,2006。
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