Limited feedback SDMA schemes based on statistical CSI

作     者：孙强 张源 金石 高西奇 Sun Qiang;Zhang Yuan;Jin Shi;Gao Xiqi

作者机构：东南大学移动通信国家重点实验室南京210096 南通大学电子信息学院南通226019 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2012年第28卷第1期

页      面：1-7页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：The National Natural Science Foundation of China( No. 60925004, 60902009, 61001103) the National Science and Technology Major Project of China ( No. 2009ZX03003-005-02, 2009ZX03003-011-04,2011ZX03003-003-03) the Natural Science Foundation of Jiangsu Province of China ( No. BK2011019) the Natural Science Foundation of the Jiangsu Higher Education Institutions of China ( No. 10KJB510021) 

主　　题：spatial division multiple access statistical channelstate information multiuser multiple-input multiple-output 

摘      要：This paper investigates the multi-beam selection algorithms for transmit correlation channels by using statistical channel state information （SCSI） and instantaneous channel state information. Unlike the conventional codebook-based transmission scheme, the proposed multi-beam selection with the single channel quality indicator （CQI） feedback （MBS- SCF） algorithm determines the preferred beam vector by exploiting the SCSI and only feeds back CQI at each timeslot. The performance of the MBS-SCF algorithm is nearly the same as that of the conventional scheme. In order to further improve the average sum rate, a novel multi-beam selection with the dual CQIs feedback （MBS-DCF） algorithm is proposed, which determines dual preferred statistical eigen- directions and feeds back dual CQIs at each timeslot. The theoretical analysis and simulation results demonstrate that the MBS-DCF algorithm can increase the multiuser diversity and multiplexing gain and exhibits a higher average sum rate.