A New Design of Polar-Cap Differential Codebook for Temporally/Spatially Correlated MISO Channels

被引：51
|
作者：
Choi, Junil [1 ]
Clerckx, Bruno [2 ]
Lee, Namyoon [3 ]
Kim, Gil [4 ]
机构：
[1] Purdue Univ, Dept Elect & Comp Engn, W Lafayette, IN 47907 USA
[2] Imperial Coll London, Dept Elect & Elect Engn, London, England
[3] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78712 USA
[4] Samsung Elect, DMC R&D Ctr, Seoul, South Korea
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2012年 / 11卷 / 02期
关键词：
Temporally/spatially correlated multiple-input single-output (MISO) channel; limited feedback; differential codebook; TRANSMISSION SUBSPACE TRACKING; DENSE SPHERICAL CODES; LIMITED FEEDBACK; MIMO;
D O I：
10.1109/TWC.2011.122211.110313
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Accurate channel direction information is essential to achieve considerable capacity gains in multiple-input multiple-output (MIMO) wireless communication systems. Limited feedback using a polar-cap differential codebook which utilizes the temporal correlation in multiple-input single-output (MISO) channels is presented in this paper. We first describe the general properties of the polar-cap differential codebook and then explain the design methodology of the size of the polar-cap given the temporal correlation coefficient. We also propose an enhancement of the polar-cap differential codebook which is suitable for a spatially correlated channel. We compare the polar-cap differential codebook with a rotation-based differential codebook in terms of the chordal distance to demonstrate the superiority of the polar-cap differential codebook. Monte Carlo simulation results show that the polar-cap differential codebook facilitates a significant performance gain in both temporally and spatially correlated channels.
引用
收藏
页码：703 / 711
页数：9
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