| Forward Link Performance Analysis in CDMA Distributed Antenna Systems with Imperfect Channel Estimation |
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| 引用本文： | CHEN Peng,WU Wei-lingInformation Engineering School,Beijing University of Posts and Telecommunications,Beijing 100876,P. R. China. Forward Link Performance Analysis in CDMA Distributed Antenna Systems with Imperfect Channel Estimation[J]. 中国邮电高校学报(英文版), 2005, 12(1) |
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| 作者姓名： | CHEN Peng WU Wei-lingInformation Engineering School Beijing University of Posts and Telecommunications Beijing 100876 P. R. China |
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| 作者单位： | CHEN Peng，WU Wei-lingInformation Engineering School，Beijing University of Posts and Telecommunications，Beijing 100876，P. R. China |
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| 摘 要： | 1 Introduction The Distributed Antenna (DA) system has been proposedas a promising antenna architecture for the future wirelesscommunication systems[1~10]. In the DA systems, with remote antennas, the presentcellular structure is removed and cells are not divided geo graphically, but according to the user needs. That is, ac cording to the channel estimates computed via pilot signals,the Processing Node (PN) continuously measures the chan nels between the mobiles and the remote ante…
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Forward-Link Performance Analysis in CDMA Distributed Antenna Systems with Imperfect Channel Estimation |
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| CHEN Peng,WU Wei-ling. Forward-Link Performance Analysis in CDMA Distributed Antenna Systems with Imperfect Channel Estimation[J]. The Journal of China Universities of Posts and Telecommunications, 2005, 12(1) |
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| Authors: | CHEN Peng WU Wei-ling |
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| Abstract: | The impact of imperfect channel estimation on the forward-link performance in CDMA distributed antenna systems in multi-path fading environment is investigated.A detailed analytical model based on a hybrid signal combining method is presented and exact outage probability expression is derived.The investigation shows that the effect of imperfect channel estimates varies with system load.Furthermore,if simulcasting is employed,macro-diversity can decrease the sensitivity of forward-link to channel estimation errors and increase the forward-link outage performance,which is contrary to the conclusion drawn based on the ideal channel estimation assumption. |
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| Keywords: | CDMA distributed antenna systems imperfect channel estimation outage probability |
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