Timing Acquisition for Distributed Antenna Systems with the Cooperation of Two Remote Antennas  

作　　者：QING Chaojin SHAO Shihai TANG Youxi 

机构地区：[1].School of Electrical and Information Engineering, Xihua University, Chengdu 610039, China [2]National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 610054, China

出　　处：《Chinese Journal of Electronics》2011年第3期527-532,共6页电子学报（英文版）

基　　金：This work is supported in part by the National Natural Science Foundation （No.60832007, No.60901018, No.60902027, No.U1035002/L05）, 863 Hi-Tech Research and Development Project of China （No.2009AA01Z236）, Key Project （No.2009ZX03003-008-01）, and the Fundamental Research Funds for the Central Universities of China （No.ZYGX2009J008, No.ZYGX2009J010）.

摘　　要：In the coverage region of Distributed antenna systems （DAS）, two Remote antennas （RA） are as- sumed at the Base station （BS） for receiving the signal transmitted from the Mobile station （MS） with a single antenna. Since the locations of the two RAs at BS are fixed, a constraint, which is exploited to associate the time delays from the MS to the two RAs, is derived from the known locations of the two RAs. With this constraint, we propose a maximum-likelihood （ML）-based Cooperative timing acquisition （CTA） method. Compared to the Independent timing acquisition （ITA） for each RA, the analysis and simulation results show that the Probability of correct acquisition （PCA） for each RA can be improved by the cooperation of the two RAs.

关 键 词：Cooperative timing acquisition Distributed antenna systems Maximum likelihood estimator Probability of correct acquisition. 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN911.22[自动化与计算机技术—控制科学与工程]