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Performance Analysis of a Hybrid Codebook for Downlink Relay Systems |
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PP: 407-412 |
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Author(s) |
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Young-Ju Kim,
Noe-Yoon Park,
Hyung-Jun Kim,
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Abstract |
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In this paper, we propose a novel codebook for multiple-input multiple-output (MIMO) Rician fading channels. While
the most conventional codebooks are designed in Rayleigh fading channels, we design a hybrid codebook which combines discrete
Fourier transform matrix-based codebook for MIMO Rayleigh fading channels and array matrix-based codebook for MIMO line-of-
sight channels. Especially, a backhaul link between base station and relay station can be a good target MIMO channels for the proposed
codebook. Link-level simulations performed in a MIMO-OFDM system show that the proposed hybrid codebook outperforms the
conventional codebooks when the K factor of Rician distribution is between 0:28 and 0:99. Moreover, the proposed codebook shows
almost optimal link-level performances for MIMO Rayleigh fading channels. |
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