Optimal beamforming for two-way multi-antenna relay channel with analogue network coding
IEEE Journal on Selected Areas in Communications - Special issue on network coding for wireless communication networks
Optimal channel estimation and training design for two-way relay networks
IEEE Transactions on Communications
IEEE Transactions on Signal Processing
Asymptotic ergodic capacity analysis for MIMO amplify-and-forward relay networks
IEEE Transactions on Wireless Communications
Optimizations of a MIMO Relay Network
IEEE Transactions on Signal Processing - Part II
IEEE Transactions on Signal Processing
Linear Transceiver Design in Nonregenerative Relays With Channel State Information
IEEE Transactions on Signal Processing
Capacity scaling laws in MIMO relay networks
IEEE Transactions on Wireless Communications
Optimal Design of Non-Regenerative MIMO Wireless Relays
IEEE Transactions on Wireless Communications
On channel estimation and optimal training design for amplify and forward relay networks
IEEE Transactions on Wireless Communications - Part 2
Multiple-antenna channel hardening and its implications for rate feedback and scheduling
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
On the capacity of MIMO relay channels
IEEE Transactions on Information Theory
Mutual information and minimum mean-square error in Gaussian channels
IEEE Transactions on Information Theory
Capacity bounds and power allocation for wireless relay channels
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
Broadcast Capacity Region of Two-Phase Bidirectional Relaying
IEEE Transactions on Information Theory
Iterative detection and decoding with an improved V-BLAST for MIMO-OFDM systems
IEEE Journal on Selected Areas in Communications
Spectral efficient protocols for half-duplex fading relay channels
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
A Two-Way MIMO Relaying Scheme with Partial Channel State Information
Wireless Personal Communications: An International Journal
Weighted Sum Rate Maximization for Downlink Multiuser Relay Network with Direct Link
Wireless Personal Communications: An International Journal
A Low-Complexity Hybrid Framework for Combining-Type Non-regenerative MIMO Relaying
Wireless Personal Communications: An International Journal
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This paper considers both one-way and two-way relaying systems with multiple relays between two terminal nodes where all nodes have multiple-input multiple-output (MIMO) antennas. We propose a unified algorithm which computes the optimal linear transceivers jointly at the source node and the relay nodes for amplify-and-forward (AF) protocols. First, optimization designs based on the sum-rate and the mean-square error (MSE) criteria are formulated for the two-way AF relaying channel. Due to non-convexity of the given problems, the proposed schemes iteratively identify local-optimal source and relay filters by deriving the gradients of the cost functions for a gradient descent algorithm. Then, the proposed algorithm can optimize a one-way multiple relay system as a special case of the two-way channel. Finally, we prove the global optimality of the maximum sum-rate scheme under an asymptotically large antenna assumption. From simulation results, it is confirmed that the proposed methods yield the near optimum result for the MIMO multiple relay channel even with a moderate number of antennas. Consequently, we show that the proposed algorithm outperforms conventional schemes in terms of the sum-rate and the error performance for both one-way and two-way protocols.