Feedback can at most double gaussian multiple access channel capacity
IEEE Transactions on Information Theory
Elements of information theory
Elements of information theory
Spectral efficiency in the wideband regime
IEEE Transactions on Information Theory
Suboptimality of TDMA in the low-power regime
IEEE Transactions on Information Theory
A network information theory for wireless communication: scaling laws and optimal operation
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
On the power efficiency of sensory and ad hoc wireless networks
IEEE Transactions on Information Theory
Outage Capacity of the Fading Relay Channel in the Low-SNR Regime
IEEE Transactions on Information Theory
Review: A survey and tutorial of wireless relay network protocols based on network coding
Journal of Network and Computer Applications
Resource Allocation Schemes for the Heterogeneous OFDMA System with Multiple Ad Hoc Relays
Wireless Personal Communications: An International Journal
Optimal rate region of two-hop multiple access channel via amplify-and-forward scheme
Information Theory, Combinatorics, and Search Theory
A Two-Way MIMO Relaying Scheme with Partial Channel State Information
Wireless Personal Communications: An International Journal
Hi-index | 754.84 |
Achievable rates with amplify-and-forward (AF) and decode-and-forward (DF) cooperative strategies are examined for relay networks. Motivated by sensor network applications, power-constrained networks with large bandwidth resources and a large number of nodes are considered. It is shown that AF strategies do not necessarily benefit from the available bandwidth. Rather, transmitting in the optimum AF bandwidth allows the network to operate in the linear regime where the achieved rate increases linearly with the available network power. The optimum power allocation among the AF relays, shown to be a form of maximal ratio combining, indicates the favorable relay positions. Orthogonal node transmissions are also examined. While the same optimum bandwidth result still holds, the relay power allocation in this case can be viewed as a form of water-filling. In contrast, the DF strategy will optimally operate in the wideband regime and is shown to require a different choice of relays. Thus, in a large scale network, the choice of a coding strategy goes beyond determining a coding scheme at a node; it also determines the operating bandwidth, as well as the set of relays and best distribution of the relay power.