高级搜索

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

空载波对STBC-OFDM系统信道估计性能的影响分析与改进

王轶 陶小峰 张平

王轶, 陶小峰, 张平. 空载波对STBC-OFDM系统信道估计性能的影响分析与改进[J]. 电子与信息学报, 2009, 31(3): 640-644. doi: 10.3724/SP.J.1146.2007.01730
引用本文: 王轶, 陶小峰, 张平. 空载波对STBC-OFDM系统信道估计性能的影响分析与改进[J]. 电子与信息学报, 2009, 31(3): 640-644. doi: 10.3724/SP.J.1146.2007.01730
Wang Yi, Tao Xiao-feng, Zhang Ping. Performance Analysis and Enhancement of Channel Estimation for STBC-OFDM Systems with Virtual Subcarriers[J]. Journal of Electronics & Information Technology, 2009, 31(3): 640-644. doi: 10.3724/SP.J.1146.2007.01730
Citation: Wang Yi, Tao Xiao-feng, Zhang Ping. Performance Analysis and Enhancement of Channel Estimation for STBC-OFDM Systems with Virtual Subcarriers[J]. Journal of Electronics & Information Technology, 2009, 31(3): 640-644. doi: 10.3724/SP.J.1146.2007.01730

空载波对STBC-OFDM系统信道估计性能的影响分析与改进

doi: 10.3724/SP.J.1146.2007.01730
基金项目: 

国家863计划项目(2006AA01Z260)和国家自然科学基金重大项目(NSF60496312)资助课题

Performance Analysis and Enhancement of Channel Estimation for STBC-OFDM Systems with Virtual Subcarriers

  • 摘要: 该文分析了空时分组码-正交频分复用(STBC-OFDM)系统中,空载波对基于离散傅里叶变换(DFT)信道估计的性能影响,推导得出空载波影响下信道估计均方误差及误码率的解析式,并提出一种新的信道估计方法,通过时域乘以干扰因子矩阵的逆消除空载波引起的混叠,提高信道估计精度。仿真结果与理论结果相符,且表明改进的信道估计算法有效消除均方误差地板现象,提高系统性能。
  • Zou W Y and Yiuyan Wu. COFDM: An overview [J].IEEETrans. on Broadcasting.1995, 41(1):1-8[2]Foschini G. Layered space-time architecture for wirelesscommunication in a fading environment when usingmulti-element antennas [J].Bell Labs Technical Journal.1996,1(2):41-59[3]Alamouti S M. A simple transmit diversity technique forwireless communications [J].IEEE Journal on Selected Areasin Communications.1998, 16(8):1451-1458[4]Zhang P, Tao X F, and Zhang J H. A vision from Futurebeyond 3G TDD [J]. IEEE Commun Magazine, 2005, 43(1):38-44.[5]Van de Beek J J, Edfors O, and Sandel M, et al.. On channelestimation in OFDM systems [C]. IEEE VTC, Chicago, USA.Jul. 25-28, 1995: 815-919.[6]Li Y, Seshadri N, and Ariyavisitakul S. Channel estimationfor OFDM systems with transmitter diversity in mobilewireless channels [J].IEEE Journal on Selected Areas inCommunications.1999, 17(3):461-471[7]梁永明, 罗汉文, 黄建国. MIMO-OFDM 系统中一种基于自适应滤波的信道估计方法[J].电子与信息学报.2007, 29(2):310-313浏览[8]Auer G, Dammann A, and Sand S. Channel estimation forOFDM systems with multiple transmit antennas byexploiting the properties of the discrete fourier transform [C].PIMRC. Beijing, China. Sep. 7-10, 2003: 1954-1958.[9]Li Y. (Geoffrey)Simplified channel estimation for OFDMsystems with multiple transmit antennas [J].. IEEE Trans. onWireless Communications, Science.2002, 1(1):67-75[10]Min H and Bhargava V K. An investigation into time-domainapproach for OFDM channel estimation [J].IEEE Trans. onBroadcasting.2000, 46(4):240-248[11]Seo J W, Wee J W, and Park Y S, et al.. DFT-based PSAchannel estimation using linear prediction for OFDM systemswith virtual carriers [C]. IEEE VTC, Stockholm, Sweden.May. 30- Jun. 1, 2005: 510-513.[12]唐恬, 姜军, 张平. 一种基于PCC 训练符号的OFDM信道估计方法[J]. 北京邮电大学学报, 2007, 30(4): 37-40.Tang T, Jiang J, and Zhang P. A channel estimationalgorithm for OFDM based on PCC training symbols [J].Journal of Beijing University of Posts andTelecommunications, 2007, 30(4): 37-40.[13]Proakis J G. Digital Communication [M]. 4th Edition. NewYork. McGraw-Hill, 1995: 254-283.[14]Hyunsoo C and Daesik H. Effect of channel estimation errorin OFDM-based WLAN [J].IEEE Commun Letter.2002,6(5):190-192[15][15] ITU-R Recommendation M. 1225, Guidelines for Evaluationof Radio Transmission Technologies for IMT-2000 [S]. 1997.
  • 加载中
计量
  • 文章访问数:  3595
  • HTML全文浏览量:  96
  • PDF下载量:  809
  • 被引次数: 0
出版历程
  • 收稿日期:  2007-11-05
  • 修回日期:  2008-04-23
  • 刊出日期:  2009-03-19

目录

    /

    返回文章
    返回