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In this paper, we consider a multi-relay cooperative network assisted by the Automatic Repeat reQuest mechanism. In particular, the source node broadcasts the encoded stream to a set of relaying nodes and a relay will be chosen at each retransmission round to assist the source to convey the same stream to the common destination. Afterwards, we develop a semi-analytical method to compute the exact...
In this paper we investigate the performances of Decode-and-forward (DF) assisted by automatic repeat request (ARQ) relaying over Rayleigh fast fading channel. We derive a tight asymptotic approximation of the outage probability at high signal-to-noise ratio(SNR) regime. Furthermore we formulate an optimization problem aiming at achieving a target outage probability with an optimum allocation of the...
In this paper we consider a multi relay Decode and Forward (DF) relay network assisted by Hybrid automatic repeat request (HARQ) in a Rayleigh block fading environment. The system uses an incremental relaying strategy in which the best relay is selected to cooperate with source. A Space-Time Block coding (STB) is used for cooperation between source and selected relay to transmit the data to the destination...
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