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A Two-Stage Antenna Subset Selection Scheme for Amplify-and-Forward MIMO Relay Systems

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2 Author(s)
Heesun Park ; Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Joohwan Chun

A two-stage antenna subset selection scheme is proposed to maximize the channel capacity of amplify-and-forward multiple-input multiple-output relay systems. To reduce the computational complexity of the antenna selection process, the receive and transmit antenna selections are separated in a two-stage algorithm. In stage 1, a subset of receive antennas is selected at the relay node. A subset of transmit antennas is then selected at the relay node in stage 2. The simulation results demonstrate that the proposed scheme achieves nearly the same channel capacity with a reduced amount of computational complexity as compared to an exhaustive search.

Published in:

Signal Processing Letters, IEEE  (Volume:17 ,  Issue: 11 )