Exact Outage Probability Analysis for Relay-aided Underlay Cognitive Communications
Résumé
In a spectrum sharing underlay context, we investigate
the exact derivation of the outage probability for relay-aided cognitive
radio communications. To give more degrees of freedom to the
secondary system in acquiring a targeted quality-of-service (QoS)
under the primary system interference constraint, the secondary link
is assisted by a set of relays acting in a two-hop decode-and-forward
selective relaying mode. By means of the cumulative distribution
functions of the received signal-to-noise ratio (SNR) at the secondary
receiver, we derive the end-to-end outage probability of the secondary
system in its closed form. The analytical and simulation results are
then compared and interestingly shown to perfectly match over the
entire interference threshold region.
Origine : Accord explicite pour ce dépôt
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