移动通信中的信道估计技术Technology of Channel Estimation in Mobile Communication
王军选
摘要(Abstract):
信道估计是移动通信系统需要解决的最核心的问题之一,信道估计的精度直接影响到移动通信系统的性能和容量。介绍了目前常用的几种基于导频序列的信道估计技术,分析了不同估计方式的优缺点;同时介绍了几种在时分复用导频辅助估计中能够减小多普勒频移对信道估计影响的插值技术,并对他们进行了比较分析。
关键词(KeyWords): 信道估计;导频辅助估计;插值技术;多普勒频移
基金项目(Foundation):
作者(Author): 王军选
参考文献(References):
- [1]Kay S M.Fundamentals of Statistical Signal Processing[M].Prentice-Hall,Englewood Cliffs,NJ,1993.
- [2]Ma X,Yang L,Giannakis G B.Optimal Training for MIMOFrequency-selective Fading Channels.In Proc.IEEE 36thAsilomar Conf.Sig.,Syst.,Comput.,2005,4(2):453-466.
- [3]Deng Xinmin,Alexander M Haimovich,Javier Garcia-Frias.Decision Directed Iterative Channel Estimation forMIMO Systems.ICC′03.IEEE International Conference on,2003(4):2 326-2 329.
- [4]Babak Hassibi,Bertrand M Hochwald.How Much Trainingis Needed in Multiple-Antenna Wireless Links?IEEETransactions on Information Theory,2003,49(4).
- [5]Mikael Tapio.Channel Estimation in Wireless Communica-tion Systems Employing Multiple Antennas.Thesis,2004.
- [6]Norbert Gortz.Joint Source-Channel Decoding by Channel-Coded Optimal Estimation.Proceedings 3rd ITG-Confer-ence Source and Channel Coding,Munich,Germany,2000.
- [7]Maja Loncar,Ralf R Muller,Joachim Wehinger,et al.Itera-tive Channel Estimation and Data Detection in Frequency-selective FadingMIMO Channels,Euro.Trans.Telecomms.,2004,15:459-470.
- [8]Jin Xiaowei,Andrew W Eckford,Thomas E Fuja.Analysisof Joint Channel Estimation and LDPC Decoding on BlockFading Channels.International Symposium on InformationTheory and Its Applications,ISITA2004,Parma,Italy,Oct.,2004.
- [9]Nefedov N,Pukkila M.Iterative Channel Estimation forGPRS,Int.Symp.on Personal,Indoor and Mobile RadioCommunications(PIMRC),London,Sep,2000:999-1 003.
- [10]Nefedov N,Pukkila M.Turbo Equalization and Iterative(Turbo)Estimation Techniques for Packet Data Transmis-sion,2nd Int.Symp.on Turbo Codes,Brest,France,2000.
- [11]Haykin S.Adaptive Filter Theory[M].3rd Edition.Pretice-Hall,1996.