Understanding digital subscriber line technology
Understanding digital subscriber line technology
Fast multiple access selection through variable power transmissions
IEEE Transactions on Wireless Communications
Single and multiple relay selection schemes and their achievable diversity orders
IEEE Transactions on Wireless Communications
Analysis, insights and generalization of a fast decentralized relay selection mechanism
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Cooperative wireless communications: a cross-layer approach
IEEE Wireless Communications
Energy-constrained modulation optimization
IEEE Transactions on Wireless Communications
Cooperative Communications with Outage-Optimal Opportunistic Relaying
IEEE Transactions on Wireless Communications
Selection Cooperation in Multi-Source Cooperative Networks
IEEE Transactions on Wireless Communications
Cross-Layer Optimal Policies for Spatial Diversity Relaying in Mobile Ad Hoc Networks
IEEE Transactions on Wireless Communications
Energy-Efficient Cooperative Relaying over Fading Channels with Simple Relay Selection
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Performance analysis of single relay selection in rayleigh fading
IEEE Transactions on Wireless Communications
Cooperative communication in wireless networks
IEEE Communications Magazine
A simple Cooperative diversity method based on network path selection
IEEE Journal on Selected Areas in Communications
Joint optimization of relay strategies and resource allocations in cooperative cellular networks
IEEE Journal on Selected Areas in Communications
Splitting algorithms for fast relay selection: generalizations, analysis, and a unified view
IEEE Transactions on Wireless Communications
Optimal Relay Selection for Energy-Efficient Multicast
Wireless Personal Communications: An International Journal
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A common and practical paradigm in cooperative communications is the use of a dynamically selected 'best' relay to decode and forward information from a source to a destination. Such a system consists of two core phases: a relay selection phase, in which the system expends resources to select the best relay, and a data transmission phase, in which it uses the selected relay to forward data to the destination. In this paper, we study and optimize the trade-off between the selection and data transmission phase durations. We derive closed-form expressions for the overall throughput of a non-adaptive system that includes the selection phase overhead, and then optimize the selection and data transmission phase durations. Corresponding results are also derived for an adaptive system in which the relays can vary their transmission rates. Our results show that the optimal selection phase overhead can be significant even for fast selection algorithms. Furthermore, the optimal selection phase duration depends on the number of relays and whether adaptation is used.