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基于时变衰落信道分解的OFDM信号接收技术

孟德香 吴湛击 梁红玉 吴伟陵

孟德香, 吴湛击, 梁红玉, 吴伟陵. 基于时变衰落信道分解的OFDM信号接收技术[J]. 电子与信息学报, 2005, 27(10): 1630-1634.
引用本文: 孟德香, 吴湛击, 梁红玉, 吴伟陵. 基于时变衰落信道分解的OFDM信号接收技术[J]. 电子与信息学报, 2005, 27(10): 1630-1634.
Meng De-xiang, Wu Zhan-ji, Liang Hong-yu, Wu Wei-ling. OFDM Signal Receiving Technique Based on Time-varying Fading Channels Decomposing[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1630-1634.
Citation: Meng De-xiang, Wu Zhan-ji, Liang Hong-yu, Wu Wei-ling. OFDM Signal Receiving Technique Based on Time-varying Fading Channels Decomposing[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1630-1634.

基于时变衰落信道分解的OFDM信号接收技术

OFDM Signal Receiving Technique Based on Time-varying Fading Channels Decomposing

  • 摘要: OFDM信号在时变衰落信道中传输时存在载波间干扰(ICI),降低了系统的性能。基于衰落信道的多普勒分解,OFDM信号在时变衰落信道中的传输可以等效成信息数据直接通过无衰落的离散白噪声滤波器模型信道传输,改进的Viterbi算法可用于接收这类信号。该接收技术可以有效去除传统的OFDM系统中的载波间干扰,消除误码的地板效应,提高了系统性能。
  • IEEE, Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-Speed Physical Layer in the 5 GHZ Band, IEEE Std802.11a-1999.[2]ETSI, Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; Physical (PHY) layer, ETSI TS 101 475 V1.1.1 (2000-04).[3]ETSI, Radio broadcasting systems: Digital audio broadcasting to mobile, portable and fixed receivers, European Telecomm-[4]unication Standard, ETS300-401, Feb. 1995.[5]Tuttlebee W H W. Consumer digital radio: from concept to reality[J].Electronics and Communication Engineering Journal.1998, 10(6):263-276[6]ETSI, Digital video broadcasting: Framing structure, channel coding and modulation for digital terrestrial television, European Telecommunication Standard, EN 3---744, Aug. 1997.[7]Reimers U. DVB-T: the COFDM-based system for terrestrial television[J].Electronics and Communication Engineering Journal.1997, 9(1):28-32[8]Ye Li, Cimini L J. Bounds on the interchannel interference of OFDM in time-varying impairments[J].IEEE Trans. on Comm.2001, 49(3):401-404[9]Sayeed M.[J].Aazhang B. Exploiting Doppler diversity in mobile wireless communications. in Proc. 1997 Conf. Information Sciences and Systems (CISS97), Baltimore, MD.1997,:-[10]Sayeed M, Aazhang B. Joint multipath-doppler diversity in mobile wireless communications[J].IEEE Trans. on Comm.1999, 47(1):123-132[11]Proakis J. Digital Communications, New York, McGraw Hill, 4th ed., 2001: 598-616.[12]Viterbi A J. Error bounds for convolutional codes and asymptotically optimum decoding algorithm. IEEE Trans. on Info. Theory, 1967, IT-13(4): 260-269.[13]Wilson S G. Digital Modulation and Coding, Englewood Cliffs, NJ: Prentice-Hall, 1996: 587-588.[14]Forney Jr G D. Maximum-likelihood sequence estimation of digital sequence in the presence of intersymbol interference. IEEE Trans. on Info. Theory, 1972, IT-18(5): 363-378.
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出版历程
  • 收稿日期:  2004-04-12
  • 修回日期:  2004-09-13
  • 刊出日期:  2005-10-19

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