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移動(dòng)通信中一種精確的多普勒頻移估計(jì)方法

華驚宇,  馬章勇,  王東明,  尤肖虎

華驚宇, 馬章勇, 王東明, 尤肖虎. 移動(dòng)通信中一種精確的多普勒頻移估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2005, 27(1): 95-98.
引用本文: 華驚宇, 馬章勇, 王東明, 尤肖虎. 移動(dòng)通信中一種精確的多普勒頻移估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2005, 27(1): 95-98.
Hua Jing-yu, Ma Zhang-yong, Wang Dong-ming, You Xiao-hu. An Accurate Scheme for the Doppler Shift Estimation in Mobile Communication Systems[J]. Journal of Electronics & Information Technology, 2005, 27(1): 95-98.
Citation: Hua Jing-yu, Ma Zhang-yong, Wang Dong-ming, You Xiao-hu. An Accurate Scheme for the Doppler Shift Estimation in Mobile Communication Systems[J]. Journal of Electronics & Information Technology, 2005, 27(1): 95-98.

移動(dòng)通信中一種精確的多普勒頻移估計(jì)方法

An Accurate Scheme for the Doppler Shift Estimation in Mobile Communication Systems

  • 摘要: 該文利用有效到達(dá)徑上信道參數(shù)的估計(jì)值,統(tǒng)計(jì)其包絡(luò)的電平通過率(Level Crossing Rate,LCR),據(jù)此估計(jì)出時(shí)變多徑信道的多普勒頻移。同時(shí)還在理論上分析了噪聲環(huán)境下LCR方法的估計(jì)偏差,進(jìn)而提出了精確的改進(jìn)方法,使得通信系統(tǒng)在各種移動(dòng)速度和信噪比下都具有較高的估計(jì)精度。
    Abstract: In this paper, the Doppler-shift of the time-varying multi-path channel is estimated by calculating the Level Crossing Rate (LCR) of the signal envelope of the channel coefficient estimates on the effective fingers. The effect of noise is analyzed , and an improved accurate estimation method is proposed to get the high estimation accuracy in all kinds of velocity and signal-to-noise ratio.
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  • Jakes W C. Microwave Mobile Communications[M]. New York:IEEE Press, 1994, chapter 1.[2]Monk A M, Miltein L B. Open-loop power control error in a land mobile satellite system[J].IEEE ,J. on Sel. Areas Comm.1995,13(2):205-[3]Cavers J K. An analysis of pilot symbol assisted modulation for Rayleigh fading channel[J]. IEEE Trans. on VT, 1991, 40(4):683 - 693.[4]Sampath A, Holtzman J. Estimation of maximum Doppler frequency for handoff decisions[C]. Proc. IEEE VTC., Secaucus,NJ, USA ,1993:859 - 862.[5]Xiao C, Mann K, Livier J. Mobile speed estimation for TDMA based hierarchical cellular systems[C]. Proc. IEEE VTC.,Amsterdam, the Netherlands, 1999:2456 - 2460.[6]董霄劍,蔣良成,尤肖虎.RAKE接收機(jī)中信道最大多普勒頻移估計(jì)的一種新方法及其在信道估計(jì)中的應(yīng)用[J].電路與系統(tǒng)學(xué)報(bào),2000,5(4):1-5.[7]Ma Zhang-yong, Yan Yong-qing, Zhao Chun-ming, You Xiao-hu.An improved channel estimation algorithm based on estimation level crossing rate for CDMA receiver[J]. Chinese Journal of Electronics, 2003, 12(2): 235 - 238.[8]Kawabata K, Nakamura T, Fukuda E. Estimating velocity using diversity reception[C]. Proc. IEEE VTC., Stockholm, Sweden,1994:371 - 374.[9]Ehman L. On the accuracy of the envelope method for the measurement of Doppler spread[J].IEEE Trans. on Communications.1969, 17(5):578-[10]A.V奧本海姆著,劉樹棠,等譯.離散時(shí)間信號處理[M].北京:科學(xué)出版社,1998:66-68.[11]Tepedelenlioglu C, Giannakis G B. Estimation of Doppler spread and signal strength in mobile communications with application to handoff and adaptive transmission[J].Wireless Commun. Mob.Comput. of Wiley.2001, 1(2):221-
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出版歷程
  • 收稿日期:  2003-07-10
  • 修回日期:  2003-11-20
  • 刊出日期:  2005-01-19

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