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部分功率訓(xùn)練序列與OFDM承載數(shù)據(jù)的優(yōu)化分離

劉田,  唐友喜,  趙宏志,  宋麗英,  李少謙

劉田, 唐友喜, 趙宏志, 宋麗英, 李少謙. 部分功率訓(xùn)練序列與OFDM承載數(shù)據(jù)的優(yōu)化分離[J]. 電子與信息學(xué)報, 2006, 28(10): 1827-1830.
引用本文: 劉田, 唐友喜, 趙宏志, 宋麗英, 李少謙. 部分功率訓(xùn)練序列與OFDM承載數(shù)據(jù)的優(yōu)化分離[J]. 電子與信息學(xué)報, 2006, 28(10): 1827-1830.
Liu Tian, Tang You-xi, Zhao Hong-zhi, Song Li-ying, Li Shao-qian. Optimum Separation of OFDM Data and Partial Power Training Sequence in Frequency Selective Fading Channels[J]. Journal of Electronics & Information Technology, 2006, 28(10): 1827-1830.
Citation: Liu Tian, Tang You-xi, Zhao Hong-zhi, Song Li-ying, Li Shao-qian. Optimum Separation of OFDM Data and Partial Power Training Sequence in Frequency Selective Fading Channels[J]. Journal of Electronics & Information Technology, 2006, 28(10): 1827-1830.

部分功率訓(xùn)練序列與OFDM承載數(shù)據(jù)的優(yōu)化分離

Optimum Separation of OFDM Data and Partial Power Training Sequence in Frequency Selective Fading Channels

  • 摘要: 在采用部分功率訓(xùn)練序列同步的OFDM系統(tǒng)中，接收到的OFDM承載的數(shù)據(jù)信號會受到部分功率訓(xùn)練序列的嚴(yán)重干擾。由于信道估計的誤差，使得對訓(xùn)練序列的分離同樣存在誤差。本文給出了在頻率選擇性衰落信道中，一種優(yōu)化的抑制訓(xùn)練序列對OFDM承載數(shù)據(jù)的干擾的方法。通過理論分析，給出了優(yōu)化的訓(xùn)練序列對消因子。計算機(jī)仿真結(jié)果驗證了理論分析的合理性。
    Abstract: In Orthogonal Frequency-Division Multiplexing (OFDM) system, when using the partial power training sequence to synchronize, the received data signals will be seriously interfered by the training sequence. Due to the imperfect channel estimation, even if the training sequence separation technique is used, errors will also occur while using the inadequate knowledge of channel to perform the training sequence separation. This paper proposes an optimum method to suppress the interference from the training sequence to the data bearing OFDM symbols in frequency selective fading channels. A closed form formula for the optimized training sequence canceling factor is given by the theoretical analysis and its reasonability is verified by the simulation results.
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  • Kobayashi H. A novel symbol frame and carrier frequency synchronization for burst mode OFDM signal. Proc. IEEE VTC-Fall 2000. Boston (USA), 2000, vol 3: 1392-1396.[2]Kim Hyunjae, Kang Hongku, Hwang Wooncheol, Kim Kiseon. An improved frequency synchronization scheme using a modified OFDM burst format for wireless LAN systems[J].IEEE Trans. onConsumer Electronics.2000, 46:1021-1025[3]Seo Bo Seok, Kim Su Chang, Park Jinwoo, Ihm Jong Tae. Fast and low-complex frequency synchronization for OFDM. Proc. VTC 2001 Fall. Atlantic City, 2001, 2: 1120-1124.[4]Prasetyo B Y, Said F, Aghvami A H. Fast burst synchronization technique for OFDM-WLAN systems[J].IEE Proc. -Commun.2000, 147:292-298[5]Muller Weinfurtner S H. Burst frame and frequency synchronization with a sandwich preamble. Proc. GLOBECOM '01. San Antonio, Texas, 2001, 2: 1366-1370.[6]Muller Weinfurtner S H. Comparison of preamble structures for burst frequency synchronization. Proc. GLOBECOM '00. San Francisco, 2000, 3: 1488-1493.[7]Speth M.[J].Daecke D, Meyr H. Minimum overhead burst synchronization for OFDM based broadband transmission. Proc. Globecom98. Sydney.1998,:-[8]Zhou Shidong. Introduction on B3G activities in Tsinghua Univisity. Proc. of the International Forum on Future Mobile Telecommunications China-EU Post Conference on Beyond 3G, Tsinghua Univisity, 2001: 106-110.[9]Tufvesson F, Faulkner M, Hoeher P, Edfors O. OFDM time and frequency synchronization by spread spectrum pilot technique. Communication Theory Mini-Conference, Vancouver, British Columbia, Canada, 1999: 115-119.[10]Shuichi Ohno, Giannakis G B. Optimal training and redundant precoding for block transmissions with application to wireless OFDM[J].IEEE Trans on Commum.2002, 50(12):2113-2123[11]唐友喜, 趙宏志, 劉皓, 宋麗英, 劉田, 李少謙. OFDM系統(tǒng)數(shù)據(jù)與訓(xùn)練序列的一種分離技術(shù). 電子學(xué)報，2005，33: 714 -717.[12]Dukhyun Kim, Stuber G L. Residual ISI cancellation for OFDM with applications to HDTV broadcasting[J].IEEE J. on Select. Areas Commun.1998, 16:1590-[13]Park S Y, Kang C G. Performance analysis of pilot symbol arrangement for OFDM system under time-varying multi-ath Rayleigh fading channels. IEICE Trans. Commun, 2001, E84-B, 36-45.[14]Proakis J G. Digital communications. 4th Edition, New York: McGraw-Hill, 1995: 953-956.[15]ITU-R. Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000, 1997.
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出版歷程
  • 收稿日期:  2005-01-24
  • 修回日期:  2005-10-08
  • 刊出日期:  2006-10-19

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