线形小区中基于定时捕获阶段的最优天线位置设计  

Design of Optimal Antenna Location in Linear Cells Based on Timing Acquisition

作　　者：卿朝进[1,2] 夏天[2] 张近[1] 夏凌[1] 

机构地区：[1]西华大学电气信息学院,四川成都610039 [2]电子科技大学通信抗干扰技术国家重点实验室,四川成都611731

出　　处：《西华大学学报（自然科学版）》2012年第6期55-58,共4页Journal of Xihua University:Natural Science Edition

基　　金：国家自然科学基金(60832007;60901018;60902027;U1035002/L05;61001087);国家863计划(2009AA01Z236);国家重大科技专项(2009ZX03003-008-01);国家科技支撑计划(2010ZX03003-002;2011ZX03001-006-01);中央高校基金(ZYGX2009J010;ZYGX2009J008);博士后科学基金面上资助项目(2012M511920);教育部春晖计划(Z2011091);四川省教育厅重点项目(12ZA161);西华大学校重点项目(Z1120941)

摘　　要：针对线形小区,研究设计了基于定时捕获阶段的分布式天线的位置。首先,利用互相关定时捕获方法建立捕获模型;然后,基于极小极大准则,找出线形小区中移动台不同位置时定时捕获的最坏情况;最后,利用定时捕获最坏情况概率推导出每根分布式天线的最优位置。仿真研究表明:当线形小区中移动台位置均匀分布时,任意多根分布式天线的最优天线位置应基于线形小区的中心对称放置;载波频率偏移对分布式天线的最优位置影响并不明显。In linear cells, the optimal location design for distributed antennae is conducted based on timing acquisition. First, the model of timing acquisition is formulated by using the cross - correlation method. Then, the worst cases of timing acquisition with the different locations of mobile station are explored according to the minimax criterion. Finally, the optimal antenna location of each distributed antenna is derived with the the probability of the worst case. When the distribution of mobile station is uniform in the linear cells, the research results show that the distributed antennae should be located symmetrically. The research results also show that the effect of carrier frequency offset on the optimal antenna location is not obvious.

关 键 词：分布式天线 定时捕获 天线位置设计 极小极大准则 

分 类 号：TN914[电子电信—通信与信息系统]