A New Design of Polar-Cap Differential Codebook for Temporally/Spatially Correlated MISO Channels
SCOPUS
- Title
- A New Design of Polar-Cap Differential Codebook for Temporally/Spatially Correlated MISO Channels
- Authors
- Choi, J; Clerckx, B; Lee, N; Kim, G
- Date Issued
- 2012-02
- Publisher
- IEEE
- Abstract
- 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36553
- DOI
- 10.1109/TWC.2011.122211.110313
- ISSN
- 1536-1276
- Article Type
- Article
- Citation
- IEEE Transactions on Wireless Communications, vol. 11, no. 2, page. 703 - 711, 2012-02
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