Elements of information theory
Elements of information theory
Foundations and Trends® in Networking
On energy efficiency and optimum resource allocation of relay transmissions in the low-power regime
IEEE Transactions on Wireless Communications
Opportunistic cooperation by dynamic resource allocation
IEEE Transactions on Wireless Communications
Channel Estimation for Amplify and Forward Relay Based Cooperation Diversity Systems
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
The impact of CSI and power allocation on relay channel capacity and cooperation strategies
IEEE Transactions on Wireless Communications - Part 2
Spectral efficiency in the wideband regime
IEEE Transactions on Information Theory
How much training is needed in multiple-antenna wireless links?
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Capacity bounds and power allocation for wireless relay channels
IEEE Transactions on Information Theory
Space-time diversity enhancements using collaborative communications
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
Gaussian Orthogonal Relay Channels: Optimal Resource Allocation and Capacity
IEEE Transactions on Information Theory
Capacity bounds for Cooperative diversity
IEEE Transactions on Information Theory
Achievable Rates and Scaling Laws of Power-Constrained Wireless Sensory Relay Networks
IEEE Transactions on Information Theory
Outage Capacity of the Fading Relay Channel in the Low-SNR Regime
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Resource Allocation for Wireless Fading Relay Channels: Max-Min Solution
IEEE Transactions on Information Theory
Fading relay channels: performance limits and space-time signal design
IEEE Journal on Selected Areas in Communications
Outage reduction in cooperative networks with limited feedback
IEEE Transactions on Communications
A stochastic multiobjective optimization framework for wireless sensor networks
EURASIP Journal on Wireless Communications and Networking - Special issue on theoretical and algorithmic foundations of wireless ad hoc and sensor networks
Wireless Personal Communications: An International Journal
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Achievable rates and resource allocation strategies for imperfectly known fading relay channels are studied. It is assumed that communication starts with the network training phase in which the receivers estimate the fading coefficients. Achievable rate expressions for amplify-and-forward and decode-and-forward relaying schemes with different degrees of cooperation are obtained. We identify efficient strategies in three resource allocation problems: (1) power allocation between data and training symbols, (2) time/bandwidth allocation to the relay, and (3) power allocation between the source and relay in the presence of total power constraints. It is noted that unless the source-relay channel quality is high, cooperation is not beneficial and noncooperative direct transmission should be preferred at high signal-to-noise ratio (SNR) values when amplify-and-forward or decode-and-forward with repetition coding is employed as the cooperation strategy. On the other hand, relaying is shown to generally improve the performance at low SNRs. Additionally, transmission schemes in which the relay and source transmit in nonoverlapping intervals are seen to perform better in the low-SNR regime. Finally, it is noted that care should be exercised when operating at very low SNR levels, as energy efficiency significantly degrades below a certain SNR threshold value.