Fundamentals of wireless communication
Fundamentals of wireless communication
Relay architectures for 3GPP LTE-advanced
EURASIP Journal on Wireless Communications and Networking - 3GPP LTE and LTE Advanced
Joint linear filter design in multi-user cooperative non-regenerative MIMO relay systems
EURASIP Journal on Wireless Communications and Networking - Special issue on optimization techniques in wireless communications
IEEE Transactions on Signal Processing
Compress-and-forward cooperative MIMO relaying with full channel state information
IEEE Transactions on Signal Processing
MMSE based transceiver designs in closed-loop non-regenerative MIMO relaying systems
IEEE Transactions on Wireless Communications
IEEE Communications Magazine
Joint optimization for one and two-way MIMO AF multiple-relay systems
IEEE Transactions on Wireless Communications
EURASIP Journal on Advances in Signal Processing
Optimizations of a MIMO Relay Network
IEEE Transactions on Signal Processing - Part II
On robust Capon beamforming and diagonal loading
IEEE Transactions on Signal Processing
Optimal designs for space-time linear precoders and decoders
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Linear transmit processing in MIMO communications systems
IEEE Transactions on Signal Processing - Part I
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
MIMO Configurations for Relay Channels: Theory and Practice
IEEE Transactions on Wireless Communications
Optimal Design of Source and Relay Pilots for MIMO Relay Channel Estimation
IEEE Transactions on Signal Processing
Timing and Carrier Synchronization With Channel Estimation in Multi-Relay Cooperative Networks
IEEE Transactions on Signal Processing
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Combining-type relay systems can benefit from distributed array gain if the signals retransmitted from different relays are superimposed coherently at the destination. For this purpose, we propose a low-complexity hybrid framework in which the non-regenerative multiple-input-multiple-output relaying matrix at each relay is generated by cascading two substructures, akin to an equalizer for the backward channel and a precoder for the forward channel. For each of these two substructures, we introduced two one-dimensional parametric families of candidate matrix transformations. The first family, non-cooperative by nature, depends only on the backward or forward channel of the same relay. The second (cooperative) family also makes use of information derived from the channels of other relays. This hybrid framework allows for the classification and comparison of all possible combinations of these substructures, including several previously investigated methods and their generalizations. The design parameters can be optimized based on individual channel realizations or on channel statistics; in the latter case, the optimum parameters can be well approximated by linear functions of the signal-to-noise ratios. The proposed methods achieve a good balance between performance and complexity: they outperform existing low-complexity strategies by a large margin in terms of both capacity and bit-error rate, and at the same time, are significantly simpler than previous near-optimal iterative algorithms.