异构网中基于BD的协作波束赋形算法研究

›› 2015, Vol. 28 ›› Issue (2): 26-.

异构网中基于BD的协作波束赋形算法研究

王霆仪,姜静,徐政

(西安邮电大学通信与信息工程学院,陕西西安 710061)

出版日期:2015-02-15 发布日期:2015-02-16
作者简介:王霆仪(1988—),男,硕士研究生。研究方向:LTE物理层。E-mail:18992861051@163.com。姜静(1974—),女,副教授。研究方向:移动通信,无线局域网,传感器网络和宽带传输。徐政(1990—),男,硕士研究生。研究方向:大规模MIMO。

BD-based Collaborative Beamforming Algorithm in Heterogeneous Networks

WANG Tingyi,JIANG Jing,XU Zheng

(School of Communications and Information Engineering,Xi'an University of Posts and Telecommunications,Xi'an 710061,China)

Online:2015-02-15 Published:2015-02-16

摘要/Abstract

摘要：

波束赋形是下一代无线蜂窝网中提高频谱效率的一项重要技术,文中在多用户波束赋形技术的研究基础上,研究了CoMP中的CB技术。针对LTE系统中的小区间干扰严重,且已有的干扰协调技术无法有效解决边缘用户频谱效率低的问题,LTE-A系统引入了多点协作传输/接收技术。该技术通过相邻小区间的联合处理或协作波束赋形,可抑制小区间干扰,提高用户的接收信号质量,使系统容量和小区边缘用户的频谱效率得到有效提高。

关键词: 多点协作传输, 联合处理, 协作波束赋形

Abstract:

Beamforming is an important technology in the next-generation wireless cellular networks for better spectrum efficiency.Based on multi-user beam-forming technology,this paper researches the CoMP technology of the cooperative beamforming (CB).The existing interference coordination technology can not solve the low edge user spectral efficiency problem with the ever more serious inter-cell interference in the LTE system.Thus the coordinated multi-point transmission/reception (CoMP) technology is introduced in the LTE-A system.The adjacent inter-cell joint processing (JP) or cooperative beamforming (CB) can suppress Inter-cell interference and effectively improve the received signal quality,the system capacity and the spectrum efficiency for cell-edge users.

Key words: CoMP;JP;CB

中图分类号:

TN929.5

王霆仪,姜静,徐政. 异构网中基于BD的协作波束赋形算法研究[J]. , 2015, 28(2): 26-.

WANG Tingyi,JIANG Jing,XU Zheng. BD-based Collaborative Beamforming Algorithm in Heterogeneous Networks[J]. , 2015, 28(2): 26-.

参考文献

［1］Cheng Peng,Tao Meixia,Zhang Wenjun.A new SLNR-based linear precoding fordownlink multi-user multi-stream MIMO systems［J］.IEEE Communications Letters,2010,14(11):1008-1010.

［2］Wang Jie,Wang Xiaotian,Guo Yongliang,et al.A channel adaptive power allocation scheme based on SLNR precoding for multiuser MIMO systems［C］.Vehicular Technology Conference Fall (VTC 2010-Fall),2010 IEEE 72nd,2010:1-4.

［3］Spencer Q H,Swindlehurst A L,Haardt M.Zero-forcing methods for downlink spatial multiplexing in multi-user MIMO channels［J］.IEEE Transactions on Signal Processing,2004,52(2):461-471.

［4］Zhang Rui.Cooperative multi-cell block diagonalization with per-base-station power constraints［J］.IEEE Journal on Selected Areas In Communications,2010,28(9):1435-1441.

［5］Chan-Byoung Chae,David Mazzarese.Coordinated beamforming with limited feedback in the MIMO broadcast channel［J］.IEEE Journal on Selected Areas In Communications,2008,26(8):1508-1510.

［6］Ki-Hong Park,Young-Chai Ko.Low complexity coordinated beamforming in 2-User MIMO systems［C］.IEEE International Conference on Communications,2009:1-5.

［7］Damith Senaratne,Chintha Tellambura.Generalized singular value decomposition for coordinated beamforming in MIMO systems［C］.IEEE Globecom 2010 Proceedings,2010.

［8］Tuan Anh Le,Mohammad Reza Nakhai.Downlink optimization with interference pricing and statistical CSI［J］.IEEE Transactions on Communications,2013,61(6):2339-2347.

［9］Chan-Byoung Chae,Insoo Hwang.Interference aware-coordinated beamforming in a multi-cell system［J］.IEEE Transactions on Wireless Communications,2012,11(10):3692-3697.

［10］Xiang Zhengzheng,Tao Meixia.Coordinated multicast beamforming in multicell networks［J］.IEEE Transactions on Wireless Communications,2013,12(1):12-22.

［11］Caire G,Shamai S.On the achievable throughput of amulti-antenna gaussian broadcast channel［J］.IEEE Transactions on Information Theory,2003,43(6):1691-1706.

［12］Weingarten H,Steinberg Y S,Shamai S.The capacity region of the Gaussian mltiple-input multiple-output broadcast channel［C］.IEEE Transactions on Information Theory,2006(3):936-3964.