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Volume 27 Issue 10
Oct.  2005
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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.

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

  • Received Date: 2004-04-12
  • Rev Recd Date: 2004-09-13
  • Publish Date: 2005-10-19
  • There exist Inter-Carrier Interference (ICI) phenomena when OFDM signals are transmitted through time-varying fading channels. The performance of communication systems also decreases. Based on decomposing of time-varying fading channels, the system can be treated as data transmitting through a discrete-time white noise filter model channel. The Viterbi algorithm is used to receive the signal. In this way, the ICI and error floor in traditional OFDM system are removed, and the performance is enhanced.
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  • 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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