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題, 您可以本頁添加留言。我們將盡快給您答復(fù)。謝謝您的支持!

姓名
郵箱
手機號碼
標(biāo)題
留言內(nèi)容
驗證碼

異步帶限D(zhuǎn)S-CDMA系統(tǒng)在多徑衰落信道下的子空間時延序貫估計算法

程云鵬,  蔡躍明

程云鵬, 蔡躍明. 異步帶限D(zhuǎn)S-CDMA系統(tǒng)在多徑衰落信道下的子空間時延序貫估計算法[J]. 電子與信息學(xué)報, 2001, 23(11): 1195-1203.
引用本文: 程云鵬, 蔡躍明. 異步帶限D(zhuǎn)S-CDMA系統(tǒng)在多徑衰落信道下的子空間時延序貫估計算法[J]. 電子與信息學(xué)報, 2001, 23(11): 1195-1203.
Cheng Yunpeng, Cai Yueming. SUBSPACE-BASED TIME DELAY SEQUENTIAL ESTIMATION ALGORITHM FOR ASYNCHRONOUS BANDLIMITED DS-CDMA SYSTEMS IN MULTIPATH FADING CHANNELS[J]. Journal of Electronics & Information Technology, 2001, 23(11): 1195-1203.
Citation: Cheng Yunpeng, Cai Yueming. SUBSPACE-BASED TIME DELAY SEQUENTIAL ESTIMATION ALGORITHM FOR ASYNCHRONOUS BANDLIMITED DS-CDMA SYSTEMS IN MULTIPATH FADING CHANNELS[J]. Journal of Electronics & Information Technology, 2001, 23(11): 1195-1203.

異步帶限D(zhuǎn)S-CDMA系統(tǒng)在多徑衰落信道下的子空間時延序貫估計算法

SUBSPACE-BASED TIME DELAY SEQUENTIAL ESTIMATION ALGORITHM FOR ASYNCHRONOUS BANDLIMITED DS-CDMA SYSTEMS IN MULTIPATH FADING CHANNELS

  • 摘要: 該文提出了適合于異步DS-CDMA系統(tǒng)在多徑衰落信道下的子空間時延序貫估計算法,稱為MUSIC-SEA算法。該算法引入了序貫估計思想,將已估時延信息融入后續(xù)時延估計過程中,整個時延估計過程為:首先估計噪聲子空間,然后依次對每個時延進行粗略估計和精確搜索。給出了MUSIC-SEA算法的迭代執(zhí)行方法,并進行了性能分析和計算機仿真。結(jié)果表明,MUSIC-SEA算法能有效除去多徑間的相互影響,提高時延正確估計概率和時延估計精度。
    Abstract: A subspace-based time delay sequential estimation algorithm named MUSIC-SEA is presented for asynchronous bandlimited DS-CDMA systems in multipath fading channels. The sequential estimation idea is introduced, and the knowledge of the estimated time delays is involved in the subsequent estimation procedures. The whole procedure can be described as follows: the noise subspace is estimated first, and then coarse estimation and fine search of time delay are implemented for every time delay sequentially. The iterative steps are presented, the performance of the algorithm is analyzed, and simulations are carried out. The results show that the algorithm can mitigate the interference of multipath and provide time delay estimation with high probabilities and high accuracy.
    • HTML全文
  • E.G. Strom, S. Parkvall, S. L. Miller, et al., Propagation delay estimation in asynchronous DS-CDMA systems, IEEE Trans. on Commun., 1996, COM-44(1), 84-93.[2]T. Ostman, S. Parkvall, B. Ottersten, Analysis of an improved MUSIC algorithm for estimation of time delays in asynchronous DS-CDMA systems, available by URL:http:∥www.kth.se/s3/signal/ INDEX.html.[3]T. Ostman, B. Ottersten, Near far robust time delay estimation in asynchronous bandlimited DS-CDMA systems, available by URL:http:∥ www.kth.se/s3/signal/INDEX.html.[4]Cheng Yunpeng, Cai Yuemin, User recognition and time delay estimation with near far robustfor asynchronous bandlimited DS-CDMA systems, in Fifth Asia-Pacific Conference on Communications and Fourth Optoelectronic and Communications Conference(APCC/OECC99), Bei.jing,1999, 508-512.[5]E.G. Strom, S. Parkvall, S. L. Miller, et al., DS-CDMA synchronization in time varying fadingchannels, IEEE J.on SAC, 1996, SAC-14(10), 1636-1642.[6]S.K. Oh, C. K. Un, A sequential estimation approach for performance improvement ofeigenstructure-based methods in array processing, IEEE Trans. on SP, 1993, SP-41(1), 457-463.[7]M. Bhandary, Detection of the number of signals in the presence of white noise in decentralizedprocessing, IEEE Trans. on SP, 1998, SP-46(3), 800-803.[8]陳寶林,著,最優(yōu)化理論與算法,北京,北京大學(xué)出版社,1989,第五章[9]T. Ostman, On the bounds of performance in communication system, available bvURL:http:∥www.kth.se/s3/signal/INDEX.html.
  • 加載中
計量
  • 文章訪問數(shù):  1962
  • HTML全文瀏覽量:  106
  • PDF下載量:  582
  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  1999-11-01
  • 修回日期:  2000-05-30
  • 刊出日期:  2001-11-19

目錄

    /

    返回文章
    返回