淡江大學覺生紀念圖書館 (TKU Library)
進階搜尋


下載電子全文限經由淡江IP使用) 
系統識別號 U0002-2106200518155600
中文論文名稱 利用部分傳輸序列減少OFDM訊號能量峰值對平均值之比的新搜尋方法
英文論文名稱 A novel search method to reduce PAPR of an OFDM signal using partial transmit sequences
校院名稱 淡江大學
系所名稱(中) 電機工程學系碩士班
系所名稱(英) Department of Electrical Engineering
學年度 93
學期 2
出版年 94
研究生中文姓名 涂浩中
研究生英文姓名 Hao-Chung Tu
電子信箱 u7351214@tknet.tku.edu.tw
學號 692351058
學位類別 碩士
語文別 中文
口試日期 2005-05-23
論文頁數 59頁
口試委員 指導教授-丘建青
委員-林丁丙
委員-李慶烈
委員-丘建青
委員-李揚漢
委員-余金郎
中文關鍵字 峰均值功率比  部分傳輸序列法 
英文關鍵字 Peak-to-average power ratio  Partial transmit sequence 
學科別分類 學科別應用科學電機及電子
中文摘要 正交分頻多工(OFDM)的主要缺點之一在於在傳送OFDM訊號過程中會產生高的峰值對均值功率比,以致於訊號經過功率放大器之後會造成非線性失真。部份傳輸序列法(PTS-partial transmit sequence)可以有效改善OFDM訊號的PAPR。但傳統的PTS調變技術必須搜尋相位因子的所有可能組合,其搜尋複雜度會隨著子區間的數量和相位因子的種類呈現指數形式增加。本論文中,我們提出新的PTS技術僅需要些微效能的降低卻能有效減少大量傳統PTS的高計算複雜度的缺點。
英文摘要 One of the main drawbacks of orthogonal frequency division multiplexing (OFDM) is the high peak-to-average power ratio (PAPR) of the transmitted OFDM signal. Partial transmit sequence (PTS) technique can improve the PAPR statistics of an OFDM signal. As ordinary PTS technique requires an exhaustive search over all combinations of allowed phase factors, the search complexity increases exponentially with the number of sub-blocks. In this paper, we propose a novel PTS technique with reduced complexity that achieves significant reduction in search complexity with little performance degradation.


論文目次 目錄

第一章 概論 P.1

第二章 正交分頻多工系統介紹 P.6

第三章 正交分頻多工系統的峰值對平均值功率比 P.14
3.1 峰值對平均值功率比 P.14
3.2 降低PAPR的方法 P.18

第四章 部分傳輸序列法 P.24
4.1 原始的部分傳輸序列法 P.24
4.2 反覆翻轉運算法 P.27
4.3 漸進倍增反相法 P.28
4.4 結論 P.33
第五章 模擬與分析 P.41
5.1 數值分析結果P.41
5.2 結論 P.43
第六章 結論 P.51
圖目錄

圖1.1 多載波系統圖 P.5
圖2.1 ASK, FSK及PSK三種基本調變波形 P.10
圖2.2 次載波完全正交 P.11
圖2.3 OFDM通訊系統的方塊圖 P.12
圖2.4 OFDM傳輸示意圖 P.13
圖3.1 載波疊加及PAPR的產生 P.21
圖3.2 4個次載波利用BPSK調變訊號振幅分布的情形 P.22
圖3.3 PAPR依N大小不同所呈現的CDF分布圖形 P.23
圖4.1 PTS技術的方塊圖 P.35
圖4.2 QPSK調變情形 P.36
圖4.3 反覆翻轉運算法流程圖 P.37
圖4.4 反覆翻轉運算法N = 64 P.38
圖4.5 反覆翻轉運算法N = 128 P.39
圖4.6 漸進倍增反相法流程圖 P.40
圖5.1 N = 64,M = 4時各種PAPR調降方法的CCDF P.45
圖5.2 N = 128,M = 4時各種PAPR調降方法的CCDF P.46
圖5.3 N = 64,M = 8時各種PAPR調降方法的CCDF P.47
圖5.4 N = 128,M = 8時各種PAPR調降方法的CCDF P.48
圖5.5 N = 64,M = 4, 8, 16之CCDF P.49
圖5.6 N = 128,M = 4, 8, 16 CCDF P.50

表目錄

表1 各方法計算量的比較 P.35

參考文獻 [1] Mosier, |R. R., and R.G. Clabaugh, “Kineplex, a Bandwidth Efficient Binary Transmission System,” AIEE Trans., Vol. 76, pp.723-, Jan. 1958.
[2] “Orthogonal Frequency Division Multiplexing,” U.S. Patent No. 3,488,4555,filed November 14, 1966, issued Jan. 6, 1970.
[3] Zou, W. Y., and Y. Wu, “COFDM: an overview,” IEEE Trans. Broadc., Vol. 41, No. 1, pp.1-8, March 1995.
[4] Porter, G. C.,” Error Distribution and Diversity Performance of a Frequency Differential PSK HF modem,” IEEE Trans. Comm., Vol., COM-16, pp. 567-575, Aug.
[5] Zimmerman, M. S., and A. L. Kirsch, “The AN/GSC-10 (KATHRYN) variable rate data modem for HF radio,” IEEE Trans. Comm., Vol., COM-15, pp. 197-205, April 1967.
[6] Hirosaki, B., “An Orthogonally Multiplexed QAM system Using the Discrete Fourier Transform,” IEEE Trans. Comm., Vol., COM-29, pp. 982-989, July 1981
[7] Hirosaki, B., “A 19.2 kbits Voice Band Data Modem Based on Orthogonality,” Proc. OF IEEE ICC’85, pp. 21.1.1-5, 1985.
[8] Keasler, W. E., and D.L. Bitzer, “high speed modem suitable for operating with a switched network,” U.S. Patent No.4, 206,320, June 1980
[9] Chow, P. S., J. C. Tu and J.M. Cioffi, “Performance Evaluation of a Multichannel Transceiver System for ADSL and VHSDL services,” IEEE J. Selected Area, Vol., SAC-9 No. 6, pp.909-919, Aug. 1991.
[10] Chow, P. S., J. C. Tu and J.M. Cioffi, “A Discrete Multitone Transceiver System for HDSL Applications,” IEEE J. Selected AREA in COMM., Vol. SAC-9, No. 6, pp. 909-919, Aug. 1991.
[11] Paiement, R. V., “Evaluation of Single Carrier and Multicarrier Modulation Techniques for Digital ATV Terrestrial Broadcasting,” CRC Report, No. CRC-RP-004, Ottawa, Canada, Dec. 1994.
[12] Sari, H., G. Karma, and I. Jeanclaude, “Transmission Techniques for Digital Terresrtrial TV Broadcasting,” IEEE Comm. Mag., Vol.33 pp. 100-109, Feb. 1995.
[13] Oppenheim, A.V., and R.W. Schaffer, Discrete-time Signal Processing, Prentice-Hall International, ISBN 0-13-216771-9, 1989.
[14] Hara, S., M. Mouri, M. Okada, and N. Morinaga, “Transmission Performance Analysis of Multi-Carrier Modulation in Frequency Selective Fast Rayleigh Fading Channel,” in Wireless Personal Comm., Kluwer Academic Publisher, Vol. 2, pp. 335-356, 1996.
[15] Richard van Nee and Ramjee Prasad, “OFDM for Wireless Multimedia Communications,” Norwood, MA: Artech House, 1999.
[16] R. Gross and D. Veeneman, “Clipping distortion in DMT ADSL systems,” Electronics Letters, vol. 29, no. 24, 25, pp. 2080-2081, Nov. 1993.
[17] D. J. G. Mestdagh, P. Spruyt, and B. Biran, “Analysis of clipping effect in DMT-based ADSL system,” ICC’94, vol. 1, 1-5 May 1994, pp. 293-300
[18] X. Li, and L. J. Cimini Jr, “Effects of clipping and filtering on the performance of OFDM,” IEEE Commun. Lett., vol. 2, no. 5, pp. 131-133, May 1998.
[19] D Wulich, and L Goldfeld, “Reduction of peak factor in orthogonal multicarrier modulation by amplitude limiting and coding,” IEEE Trans. Commun., vol. 47, no. 1, pp 18-21, January 1999.“
[20] S. H. Muller and J. B. Huber, "OFDM with Reduced Peak-to-Average Power Ratio by Optimum Combination of Partial Transmit Sequences,' Elec. Letts., Vol. 33, No. 5, Feb. 1997, pp. 368-369.
[21] P. Van Eetvelt, G. Wade, and M. Tomlinson, "Peak to Average Power Reduction for OFDM Schemes by Selective Scrambling," Elec. Letts., Vol. 32, No. 21, Oct. 1996, pp. 1963- 1964.
[22] R. W. Bauml, R. F. H. Fischer, and J. B. Huber, "Reducing the Peak-to-Average Power Ratio of Multicarrier Modulation by Selective Mapping," Elec. Letts., Vol. 32, No. 22, Oct. 1996, pp. 2056-2057.
[23] A. E. Jones, T. A. Wilkinson, and S. K. Barton, "Block Coding Scheme for Reduction of Peak to Mean Envelope Power Ratio of Multicarrier Transmission Scheme," Elec. Letts., Vol. 30, No. 25, Dec. 1994, pp. 2098-2099.
[24] A. E. Jones, T. A. Wilkinson, and S. K. Barton, “Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes,” Electron. Lett., vol. 30, no. 25, pp. 2098-2099, Dec. 1994.
[25] T. A. Wilkinson and A. E. Jones, “Minimization of the peak-to-mean envelope power ratio of multicarrier transmission schemes by block coding,” Proceedings of IEEE Vehicular Technology Conference, Chicago, July 1995, pp. 825-829.
[26] J. A. Davis and J. Jedwab, “Peak-to-mean power control in OFDM, Golay complementary sequences and Reed-Muller codes,” IEEE Trans. on Information Theory, vol. 45, no. 7, pp. 2397-2417, Nov. 1999.

論文使用權限
  • 同意紙本無償授權給館內讀者為學術之目的重製使用,於2005-06-30公開。
  • 同意授權瀏覽/列印電子全文服務,於2005-06-30起公開。


  • 若您有任何疑問,請與我們聯絡!
    圖書館: 請來電 (02)2621-5656 轉 2281 或 來信