Performance evaluation of spectrum sensing in infrastructure based multihop network is very hard to achieve because of the adverse effects of channel fading. In this paper , performance of a multihop link is studied over Nakagami-m distribution. It provides the exact theoretical methodology for the performance analysis of spec trum sensing by evaluating detection probability. Using a cascaded multihop model, the end-to - end Signal to Noise Ratio (SNR) is given over Nakagami-m distribution. In the analysis, multihop model based on relays are considered over independent and not identically distributed (i.n.i.d) wireless channels. Simulation results show the effect of increase in number of hops on probability of detection for multihop links. Subsequent to the tho rough fading severity analysis , it has been accomplished that spectrum hole detection is more crucial at lower SNR values with large number of hops.
KeywordsSpectrum SensingEnergy DetectionNakagami-m Wireless LinkProbability of DetectionRelay ProtocolCascaded Multihop Communication
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