一级黄色片免费播放|中国黄色视频播放片|日本三级a|可以直接考播黄片影视免费一级毛片

高級(jí)搜索

留言板

尊敬的讀者、作者、審稿人, 關(guān)于本刊的投稿、審稿、編輯和出版的任何問(wèn)題, 您可以本頁(yè)添加留言。我們將盡快給您答復(fù)。謝謝您的支持!

姓名
郵箱
手機(jī)號(hào)碼
標(biāo)題
留言?xún)?nèi)容
驗(yàn)證碼

OFDM系統(tǒng)中基于恒模的盲信道估計(jì)算法

陳志剛,  張?zhí)?/a>,  周亞同

陳志剛, 張?zhí)? 周亞同. OFDM系統(tǒng)中基于恒模的盲信道估計(jì)算法[J]. 電子與信息學(xué)報(bào), 2006, 28(12): 2367-2370.
引用本文: 陳志剛, 張?zhí)? 周亞同. OFDM系統(tǒng)中基于恒模的盲信道估計(jì)算法[J]. 電子與信息學(xué)報(bào), 2006, 28(12): 2367-2370.
Chen Zhi-gang, Zhang Tai-yi, Zhou Ya-tong. Constant Modulus Based Blind Channel Estimation for Orthogonal Frequency Division Multiplexing Systems[J]. Journal of Electronics & Information Technology, 2006, 28(12): 2367-2370.
Citation: Chen Zhi-gang, Zhang Tai-yi, Zhou Ya-tong. Constant Modulus Based Blind Channel Estimation for Orthogonal Frequency Division Multiplexing Systems[J]. Journal of Electronics & Information Technology, 2006, 28(12): 2367-2370.

OFDM系統(tǒng)中基于恒模的盲信道估計(jì)算法

Constant Modulus Based Blind Channel Estimation for Orthogonal Frequency Division Multiplexing Systems

  • 摘要: 該文提出了一種適用于采用PSK調(diào)制方式的正交頻分復(fù)用(OFDM)系統(tǒng)的準(zhǔn)盲信道估計(jì)算法。該算法首先利用系統(tǒng)信號(hào)的恒模特性得到有限個(gè)可能的信道，然后利用信號(hào)的有限字符特性從可能信道中尋找出最佳信道，因而具有較低的計(jì)算復(fù)雜度。與現(xiàn)有的盲信道估計(jì)算法不同，該算法利用二階統(tǒng)計(jì)量而不是高階統(tǒng)計(jì)量估計(jì)信道，獲得了較好的估計(jì)性能。仿真結(jié)果表明，該算法的性能優(yōu)于基于有限字符特性的盲信道估計(jì)算法。
    Abstract: A novel blind channel estimation scheme is proposed for Orthogonal Frequency Division Multiplexing (OFDM) systems employing PSK modulation. This scheme is composed of obtaining a small number of possible channels by exploiting the constant modulus property and choosing a best fit over the possible channels by exploiting the finite alphabet property of information signals, thus it has low computation complexity. It estimates the channel by exploiting the second-order statistics rather than the high-order statistics of the received signal, which means that the new algorithm can achieve competitive performance. Simulation results show that the new scheme outperforms the finite-alphabet based channel estimator.
    • HTML全文
  • Park J J K, Hong D. Performance analysis of channel estimation in OFDM systems[J].IEEE Signal Processing Letters.2005, 12(1):60-62[2]Zhou S, Giannakis G B. Finite-alphabet based channel estimation for OFDM and related multicarrier systems[J].IEEE Trans. on Communications.2001, 49(8):1402-1414[3]Li C, Roy S. Subspace-based blind channel estimation for OFDM by exploiting virtual carriers[J].IEEE Trans. on Wireless Communications.2003, 2(1):141-150[4]Muquet B, Courville M D, Duhamel P. Subspace-based blind and semi-blind channel estimation for OFDM systems[J].IEEE Trans. on Signal Processing.2002, 50(7):1699-1712[5]Necker M C, Stuber G L. Totally blind channel estimation for OFDM on fast varying mobile radio channels[J].IEEE Trans. on Wireless Communications.2004, 3(5):1514-1525[6]Treichler J R, Agee B G. A new approach to multipath correction of constant modulus signals[J].IEEE Trans. on Acoustics, Speech, and Signal Processing.1983, 31(2):459-472[7]Kue R. Introduction to Digital Signal Processing. New York: Mcgraw-Hill Book Company, 1988: 242-244.
  • 加載中
計(jì)量
  • 文章訪問(wèn)數(shù):  2223
  • HTML全文瀏覽量:  93
  • PDF下載量:  918
  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  2005-03-28
  • 修回日期:  2005-12-30
  • 刊出日期:  2006-12-19

目錄

    /

    返回文章
    返回