OFDM系统中的关键技术探讨(下)

4结束语

　　本文对OFDM系统中的降低峰平比技术、同步技术和信道估计技术做了探讨，随着OFDM技术的不断发展，结合了空时编码、分集、干扰抑制以及智能天线技术后，它能最大程度的提高信息传输的可靠性，如果再结合自适应调制、自适应编码以及动态子载波分配、动态比特分配算法等技术，可以使OFDM系统的性能进一步得到优化，相应的这些技术也是OFDM系统中必须要考虑并加以解决的问题。

参考文献

1　J.A.Gingham，multicarrier Modulation for Data Transmission：An Idea Whose Time has Com.IEEE Commun.Magazine，1990，28（5），p.5-14

2　S.B.Weinstein and P.M.Ebert.Data Transmission by Frequency-division Multiplexing Using the Discrete Fouier Transform.IEEE Trans.Commun.Technol.，Oct.1971，19.p.628-634

3　A.Peled and A.Ruiz.Frequency Domain Data Transmission Using Reduced Computational Complexity Algorithms.in Proc.IEEE Int.Conf.Acoust.，Speech，Signal Processing，Denver，CO，1980，p.964-967

4　O‘Neill R.，Iopes L.B……Performance of Amplitude Limited Multitone Signals.Vehicular Technology Conference，1994，3，p.1675-1679

5　Xiaodong Li and Leonard J.Cimini.Effects of Clipping and Filtering on the Performance of OFDM.IEEE Tranx.Letters，1998.2（5），p.131-133

6　Davis，J.A.，Jedwab，J……Peak-to-Mean Power Control and Error Correction for OFDM Transmission Using Golay Sequences and Reed-Muller Codes.Electronic Letters，Feb.1997，33，p.267-268

7　R.D.J.van Nee.A OFDM Codes for Peak-to-Average Power Reduction and Error Correction.Proc.Of IEEE Globelcom，London，1996，p.740-744

8　R.Bauml，R.Fischer，J.Huber.Reducing the Peak-to-Average Power Ratio of Multi-carrier Modulation by Selected Mapping.Electronics Letters，1996，32（22），p.2056-2057

9　S.Muller，J.Huber.OFDM with educed Peak-to-Average Power Ratio by Optimum Combination of Patial Transmit Sequences.Electronics Letters，1996，32（22），p.2056-2057

10　J.-J.van de Beek，M.Sandell，P.O.Borjesson.ML Estimation of Time and Frequency Offset in OFDM Systems.IEEE Trans.Signal Processing.July 1997，45，p.1800-1805

11　M.Speth，D.Daecke，H.Meyr.Minimum Overhead Burst Synchronization for OFDM Based Broadband Transmission.in Proc.Global Telecommun.Conf.，Sydney，Australia，Noy.1998，p.2777-2782

12　F.Daffara and O.Adami.A New Frequency Detector for Orthogonal Multicarrier Transmission Techniques.in Proc.Vehicular Technol.Conf.，Chicago，IL，July 1995，p.804-809

13　M.Speth，F.Classen，H.Meyr.Frame Synchronization of OFDM Systems in Frequency Selective Fading Channels.in Proc.Vehicular Technol.Conf.，Phoenix，AZ，May 1997，p.1807-1811

14　S.A.Fechtel and H.Meyr.Improved Frame Synchronization for Spontaneous Packet Transmission over Frequency-selective Radio Channel.in Proc.PIMRC，The Hague，The Netherlands，1994，p.353-357

15　U.Lambrette，J.Horstmannshoff，H.Meyr.Techniques for Frame Synchronization on Unknown Frequency Selective Channels.in Proc.IEEE Int.Conf.on Vehicular Technology，1997

16　U.Lambrette，M.Speth，H.Meyr.OFDM Burst Frequency Synchronization by Sigle Carrier Training Data，IEEE Commun.Lett.，Mar.1997，1，p.46-48

17　P.Moose.A Technique for Orthogonal Frequency Division Multiplexing Frequency Offset Correction.IEEE Trans.Commun.，Oct.1994，42，p2908-2914

18　F.Classen and H.Meyr.Synchronization Algorithms for an OFDM Systern for Mobile Receivers.ITG-Fachtagung，Oct.26-28，1994，p.105-113

19　F.Classen and H.Meyr.Frequency Synchronization Algorithms for OFDM Systems Suitable for Communication Over Frequency Selective Fading Channel.in Proc.IEEE Veh，Technol.Conf.，1994，p.1655-1659.

20H.Nogami and T.Nagashima.A Frequency and Timing Period Acquisition Technique for OFDM Systems.Personal，