Efficient Performance Analysis of Spectrum Sensing for Cascaded Multihop Network over Nagakami-m Fading Channels

Deepti Kakkar, Arun Khosla, Moin Uddin

Department of Electronics and Communication, Dr B R Ambedkar NIT, Jalandhar, India.
Jamia Hamdard University, Delhi, India.

DOI: 10.4236/eng.2014.62010                

Abstract

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 spectrum 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 thorough fading severity analysis, it has been accomplished that spectrum hole detection is more crucial at lower SNR values with large number of hops.

Keywords

Spectrum Sensing; Energy Detection; Nakagami-m Wireless Link; Probability of Detection; Relay Protocol; Cascaded Multihop Communication

Conflicts of Interest

The authors declare no conflicts of interest.

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