Probabilistic relay selection for fast selection cooperation in half-duplex wireless networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Multihop MIMO relay networks with ARQ
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Performance evaluation of HARQ schemes for cooperative regenerative relaying
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Adaptive bitrate and resource allocation for relay-assisted ARQ transmissions
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Diversity-multiplexing-delay tradeoff of a DDF protocol on a half-duplex ARQ relay channel
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Cooperative decode-and-forward ARQ relaying: performance analysis and power optimization
IEEE Transactions on Wireless Communications
| Hi-index | 754.84 |
In this correspondence, we present an efficient protocol for the delay-limited fading ARQ single relay half-duplex channel. The source is using an automatic retransmission request (ARQ) retransmission protocol to send data to the relay and the destination. When the relay is able to decode, both the relay and the source send the same data to the destination providing additional gains. The proposed protocol exploits two kinds of diversity: (1) space diversity available through the cooperative (relay) terminal, which retransmits the source's signals and (2) ARQ diversity obtained by leveraging the retransmission delay to enhance the reliability. The performance characterization is in terms of the achievable diversity, multiplexing gain and delay tradeoff for a high signal-to-noise ratio (SNR) regime. Finally, we show the benefits of power control on the diversity by controlling the source's power level over the retransmission rounds.