Bounds on the delay-constrained capacity of UWB communication with a relay node
IEEE Transactions on Wireless Communications
Cooperative multiplexing: toward higher spectral efficiency in multiple-antenna relay networks
IEEE Transactions on Information Theory
Phase compensation for uplink distributed space-time cooperative protocol
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
BER derivation for UWB communication with a relay node in the presence of inter-channel interference
ANTS'09 Proceedings of the 3rd international conference on Advanced networks and telecommunication systems
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Adaptive bitrate and resource allocation for relay-assisted ARQ transmissions
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Protocols and resource allocation for the two-way relay channel with half-duplex terminals
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Finite-SNR diversity-multiplexing tradeoff via asymptotic analysis of large MIMO systems
IEEE Transactions on Information Theory
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We analyze the diversity-multiplexing tradeoff in a fading relay channel at finite signal-to-noise ratios (SNRs). In this framework, the rate adaptation policy is such that the target system data rate is a multiple of the capacity of an additive white Gaussian noise (AWGN) channel. The proportionality constant determines how aggressively the system scales the data rate and can be interpreted as a finite-SNR multiplexing gain. The diversity gain is given by the negative slope of the outage probability with respect to the SNR. Finite-SNR diversity performance is estimated using a constrained max-flow min-cut upper bound on the relay channel capacity. Moreover, the finite-SNR diversity-multiplexing tradeoff is characterized for three practical decode and forward half-duplex cooperative protocols with different amounts of broadcasting and simultaneous reception. For each configuration, system performance is computed as a function of SNR under a system-wide power constraint on the source and relay transmissions. Our analysis yields the following findings; (i) improved multiplexing performance can be achieved at any SNR by allowing the source to transmit constantly, (ii) both broadcasting and simultaneous reception are desirable in half-duplex relay cooperation for superior diversity-multiplexing performance, and (iii) the diversity-multiplexing tradeoff at finite-SNR is impacted by the power partitioning between the source and the relay terminals. Finally, we verify our analytical results by numerical simulations