全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电子学报  2007 

叠加训练序列OFDM系统的一种迭代信道估计方法

, PP. 165-168

Keywords: 信道估计,正交频分复用,迭代检测,叠加训练序列

Full-Text   Cite this paper   Add to My Lib

Abstract:

在瑞利多径衰落信道中,针对叠加训练序列正交频分复用系统的迭代接收机,提出了一种迭代信道估计方法.在迭代译码开始前,利用与数据符号同时发送的训序列得到信道估计初始值,并在每次迭代后利用更新的码字比特先验信息估计接收信号中的数据符号,计算更准确的信道估计值.理论分析给出了每次迭代后的信道估计值的均方误差性能.在多径衰落信道中,通过计算机仿真验证了该迭代信道估计方法的有效性和可靠性.

References

[1]  J J Van De Beek,O Edfors,M Sandell,S K Wilson.On channel estimation in OFDM systems[A].IEEE 45th Vehicular Technology Conference[C].Chicago,USA,1995.815-819.
[2]  Ye(G.)Li,L J Cimini,et al.Robust channel estimation for OFDM systems with rapid diversity fading channels[J].IEEE Transaction on Communication,1998,46(7):902-915.
[3]  G T Zhou,M Viberg,T McKelvey.A first-order statistical method for channel estimation[J].IEEE Signal Processing Letter,2003,10(3):57-60.
[4]  J K Tugnait,W Luo.On channel estimation using superimposed training and first-order statistics[J].IEEE Communication Letter,2003,7(9):413-415.
[5]  W C Jake.Microwave Mobile Communications[M].New York:Wiley,1974.
[6]  O Edfors,M Sandell,Jan-Jaap van de Beek,et al.OFDM channel estimation by singular value decomposition[J].IEEE Transaclion on Communications,1998,46(7):931-939.
[7]  J K Cavers.An analysis of pilot symbol assisted modulation for Rayleigh fading channels[J].IEEE Transaction on Vehicular Technology,1991,40(4):686-693.
[8]  Ye Li,N Seshadri,S Ariyavisitakul.Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels[J].IEEE Journal on Selected Areas in Communications,1999,17(3):461-471.
[9]  Y Zhao,A Huang A novel channel estimation method for OFDM mobile communication systems based on pilot signals and transform domain processing[A].Proceedings IEEE 47th Vehicular Technology Conference[C].Phoenix,AZ,USA,1997.2089-2093.
[10]  H Kobayashi.A novel symbol frame and carrier frequency synchronization for burst mode OFDM signal[A].Proceedings IEEE VTC-Fall 2000[C].Boston,USA,2000.1392-1396.
[11]  B Y Prasetyo,F Said,A H Aghvami.Fast burst synchronization technique for OFDM-WLAN systems[J].IEE Proceedings Communications,2000,147(5):292-298.
[12]  J E Kleider,G Maalouli,S Gifford,S Chuprun.Preamble and embedded synchronization for RF carrier frequency-hoppd OFDM[J].IEEE Journal on Selected Areas in Communications,2005,23(5):920-931.
[13]  Jitendra K Tugnait,Xiaohong Meng.On superimposed training for channel estimation:performance analysis,training power allocation,and frame synchronization[J].IEEE Transaction on Signal Processing,2002,54(2):752-765.
[14]  P Hoeher,F Tufvesson.Channel estimation with superimposed pilot sequence[A].In Proceedings IEEE GLOBECOM Conference[C].Rio de Janeiro,Brazil,1999.2162-2166.
[15]  H Zhu,B Farhang-Boroujeny,C Schlegel.Pilot embedding for joint channel estimation and data detection in MIMO communication systems[J].IEEE Communication Letter,2003,7(1):30-32.
[16]  Pingzhi Fan,Michael Darnell.Sequence Design for Communications Applications[M].USA:Research Studies Press Ltd,John Wiley & Sons Inc,1996.
[17]  Shengli Zhou,Giannakis G B,Swami A.Digital multi-carrier spread spectrum versus direct sequence spread spectrum for resistance to jamming and multipath[J].IEEE Transaction on Communicaions,2002,50(4):643-655.
[18]  S ten Brink,J Speidel,R-H Yan.Iteralive demapping for QPSK modulation[J].Electronics Letters,1998,34(15):1459-1460.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133