Optimal Source and Relay Design for Multiuser MIMO AF Relay Communication Systems With Direct Links and Imperfect Channel Information
- 4 November 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 15 (3), 2025-2038
- https://doi.org/10.1109/twc.2015.2497683
Abstract
In this paper, we propose statistically robust design for multiuser multiple-input multiple-output (MIMO) relay systems with direct source-destination links and imperfect channel state information (CSI). The minimum mean-squared error (MMSE) of the signal waveform estimation at the destination node is adopted as the design criterion. We develop two iterative methods to solve the nonconvex joint source, relay, and receiver optimization problem. Simulation results demonstrate the improved robustness of the proposed algorithms against CSI errors.Keywords
Funding Information
- National High Technology Research and Development Program of China (2015AA01A709)
- National Natural Science Foundation of China (61171099)
- Australian Research Council’s Discovery Projects (DP140102131)
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