EURASIP Journal on Wireless Communications and Networking
Super-imposed pilot-aided channel estimation and power allocation for relay systems
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Optimal channel estimation and training design for two-way relay networks
IEEE Transactions on Communications
IEEE Transactions on Communications
Achievable rates and resource allocation strategies for imperfectly known fading relay channels
EURASIP Journal on Wireless Communications and Networking
Preamble-based channel estimation for amplify-and-forward OFDM relay networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Semi-blind channel estimation for space-time coded amplify-and-forward relay networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Channel estimation and performance of mismatched decoding in wireless relay networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Frequency domain channel estimation for cooperative communication networks
IEEE Transactions on Signal Processing
Analytical performance of amplify-and-forward MIMO relaying with orthogonal space-time block codes
IEEE Transactions on Communications
Kalman filter-based channel estimation for amplify and forward relay communications
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Combination of MRC and distributed space-time coding in networks with multiple-antenna relays
IEEE Transactions on Wireless Communications
Timing estimation and resynchronization for amplify-and- forward communication systems
IEEE Transactions on Signal Processing
A new training protocol for channel state estimation in wireless relay networks
IEEE Transactions on Signal Processing
Joint optimization for one and two-way MIMO AF multiple-relay systems
IEEE Transactions on Wireless Communications
Power allocation in MMSE relaying over frequency-selective Rayleigh fading channels
IEEE Transactions on Communications
EURASIP Journal on Wireless Communications and Networking
Channel estimation for two-way relay OFDM networks
EURASIP Journal on Wireless Communications and Networking - Special issue on physical-layer network coding for wireless cooperative networks
Advances in relay networks: performance and capacity analysis of space-time analog network coding
EURASIP Journal on Wireless Communications and Networking
Proceedings of the International Conference on Advances in Computing, Communications and Informatics
Combined Time Synchronization and Channel Estimation for OFDM Based Multi-relay Networks
Wireless Personal Communications: An International Journal
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In this paper, we provide a complete study on the training based channel estimation issues for relay networks that employ the amplify-and-forward (AF) transmission scheme. We first point out that separately estimating the channel from source to relay and relay to destination suffers from many drawbacks. Then we provide a new estimation scheme that directly estimates the overall channels from the source to the destination. The proposed channel estimation well serves the AF based space time coding (STC) that was recently developed. There exists many differences between the proposed channel estimation and that in the traditional single input single out (SISO) and multiple input single output (MISO) systems. For example, a relay must linearly precode its received training sequence by a sophisticatedly designed matrix in order to minimize the channel estimation error. Besides, each relay node is individually constrained by a different power requirement because of the non-cooperation among all relay nodes. We study both the linear least-square (LS) estimator and the minimum mean-square-error (MMSE) estimator. The corresponding optimal training sequences, as well as the optimal preceding matrices are derived from an efficient convex optimization process.