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- W2083814550 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." @default.
- W2083814550 created "2016-06-24" @default.
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- W2083814550 date "2012-02-01" @default.
- W2083814550 modified "2023-10-15" @default.
- W2083814550 title "A New Design of Polar-Cap Differential Codebook for Temporally/Spatially Correlated MISO Channels" @default.
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- W2083814550 doi "https://doi.org/10.1109/twc.2011.122211.110313" @default.
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