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Conference Paper
MMSE-Based Filter Design for Multi-User Peer-to-Peer MIMO Amplify-and-Forward Relay Systems
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- Authors
- Joonwoo Shin, Jaekyun Moon, Jaeyoung Ahn
- Issue Date
- 2013-06
- Citation
- International Conference on Communications (ICC) 2013, pp.5505-5510
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper is concerned with linear relay and destination filter design methods for the multi-user peer-to-peer amplify-and-forward relaying systems. Specifically, the relay and destination filter sets are developed which minimize the sum mean-squared-error (MSE). We first present a joint optimum relay and destination filter calculation method with an iterative algorithm. Motivated by the need to reduce computational complexity of the iterative scheme, we then formulate a simplified sum MSE minimization problem using the relay filter decomposability, which lead to two sub-optimum non-iterative design methods. One is based on zero-forcing channel-inversion and the other on minimum-mean-squared-error channel-inversion. Finally, we propose modified destination filter design methods which require only local channel state information between relay and a specific destination node. The simulation results verify that, compared with the optimum iterative method, the proposed non-iterative schemes suffer a marginal loss in performance while enjoying significantly improved implementation efficiencies. © 2013 IEEE.
- KSP Keywords
- Channel State Information(CSI), Computational complexity, Filter design methods, Iterative design, Iterative method, Iterative scheme, MSE minimization, Minimum Mean Square Error(MMSE), Non-iterative, Peer-to-Peer(P2P), Zero forcing(ZF)