Multi-Rate Opportunistic Spectrum Access in Multi-Hop Ad Hoc Networks
Opportunistic Spectrum Access (OSA) is a suitable approach to increase spectrum efficiency for the current spectrum management. This paper considers the temporal aspect of 802.11- based OSA scenario. The authors investigate the Secondary Users (SU) multi-rate transmission and number of hops effects to the SU performance when exploiting Primary Users (PU) idle duration. Numerical analysis and simulation results show that, during limited PU idle duration, higher data rate transmission is essential even though it results in more hops but as the SU source traffic is getting busier, the balance between the data rate and number of hops is required.