移動通信中一種自適應(yīng)時隙結(jié)構(gòu)的新方法

華驚宇; 馬章勇; 高西奇; 尤肖虎

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移動通信中一種自適應(yīng)時隙結(jié)構(gòu)的新方法

華驚宇, 馬章勇, 高西奇, 尤肖虎

文章導(dǎo)航 > 電子與信息學(xué)報 > 2005 > 27(1): 90-94

華驚宇, 馬章勇, 高西奇, 尤肖虎. 移動通信中一種自適應(yīng)時隙結(jié)構(gòu)的新方法[J]. 電子與信息學(xué)報, 2005, 27(1): 90-94.

引用本文:

華驚宇, 馬章勇, 高西奇, 尤肖虎. 移動通信中一種自適應(yīng)時隙結(jié)構(gòu)的新方法[J]. 電子與信息學(xué)報, 2005, 27(1): 90-94.

Hua Jing-yu, Ma Zhang-yong, Gao Xi-qi, You Xiao-hu. A New Scheme for Adaptive Slot Structure in Mobile Communication Systems[J]. Journal of Electronics & Information Technology, 2005, 27(1): 90-94.

Citation:

Hua Jing-yu, Ma Zhang-yong, Gao Xi-qi, You Xiao-hu. A New Scheme for Adaptive Slot Structure in Mobile Communication Systems[J]. Journal of Electronics & Information Technology, 2005, 27(1): 90-94.

華驚宇, 馬章勇, 高西奇, 尤肖虎. 移動通信中一種自適應(yīng)時隙結(jié)構(gòu)的新方法[J]. 電子與信息學(xué)報, 2005, 27(1): 90-94.

引用本文:

華驚宇, 馬章勇, 高西奇, 尤肖虎. 移動通信中一種自適應(yīng)時隙結(jié)構(gòu)的新方法[J]. 電子與信息學(xué)報, 2005, 27(1): 90-94.

Hua Jing-yu, Ma Zhang-yong, Gao Xi-qi, You Xiao-hu. A New Scheme for Adaptive Slot Structure in Mobile Communication Systems[J]. Journal of Electronics & Information Technology, 2005, 27(1): 90-94.

Citation:

Hua Jing-yu, Ma Zhang-yong, Gao Xi-qi, You Xiao-hu. A New Scheme for Adaptive Slot Structure in Mobile Communication Systems[J]. Journal of Electronics & Information Technology, 2005, 27(1): 90-94.

移動通信中一種自適應(yīng)時隙結(jié)構(gòu)的新方法

華驚宇^{①;馬章勇},
馬章勇,
高西奇,
尤肖虎

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- 文章訪問數(shù): 2263
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出版歷程
- 收稿日期: 2003-05-29
- 修回日期: 2003-11-04
- 刊出日期: 2005-01-19

A New Scheme for Adaptive Slot Structure in Mobile Communication Systems

摘要

摘要: 在基于時分導(dǎo)頻體制的單載波頻域均衡系統(tǒng)平臺上,我們利用有效到達(dá)徑上信道參數(shù)的估計值,統(tǒng)計其包絡(luò)的電平通過率,據(jù)此估計出時變多徑信道的多普勒頻移;進(jìn)而利用跟蹤多普勒頻移變化與所需導(dǎo)頻密度之間的關(guān)系,自適應(yīng)地調(diào)整導(dǎo)頻密度,使得通信系統(tǒng)在各種移動速度下都具有較高的信息傳輸速率和良好的接收性能。
- 自適應(yīng)時隙結(jié)構(gòu); 電平通過率; 多普勒頻移; 導(dǎo)頻密度
Abstract: A Single Carrier/Frequency Domain Equalization (SC/FDE) system with time multiplexed pilot channel is designed. In this system, the Doppler-shift of the time-varying multi-path channel is estimated by calculating the Level Crossing Rate (LCR) of the signal envelope with the channel coefficient estimation on the effective fingers. Based on the Doppler-shift estimation and its relationship with pilot sampling rate, the slot structure and the pilot density are adjusted adaptively, which ensure high system capacity and good receiving performance in a wide range of mobile velocities.

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參考文獻(xiàn)(1)

Jakes W C. Microwave Mobile Communications. 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 Selected Areas Comm.1995,13(2):205-[3]Cavers J K. An analysis of pilot symbol assisted modulation for Rayleigh fading channel. IEEE Trans. on VT, 1991, 40(4):683 - 693.[4]Sampath A, Holtzman J. Estimation of maximum Doppler frequency for handoff decisions. 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. Proc. IEEE VTC.,Amsterdam, the Netherlands, 1999:2456 - 2460.[6]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. Chinese Journal of Electronics, 2003,12(2): 235 - 238.[7]Kawabata K, Nakamura T, Fukuda E. Estimating velocity using diversity reception. Proc. IEEE VTC., Stockholm, Sweden, 1994:371 - 374.[8]Negi R, Cioffi J. Pilot tone selection for channel estimation in a mobile OFDM systems[J].IEEE Trans. on Consum..Electron.1998,44(8):1122-[9]Zhou B. Mobilevelocity estimation in multipath fading channels,[M.Sc. Thesis], Queens University, Canada.

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