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

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.

Analysis of Cognitive Radio Spectrum Sensing Techniques over Nakagami-m Fading Channel

“…In the practical wireless communication, multihope and multipath transmission is the most occuring scenarios. Nakagami-m fading channel is the most suitable fading enviroment to summarize such types of propagation path [14]. It is more accurate and better than the Rayleigh and Rician fading channel as it has m diversity path.…”

“…For m=1 its performance gets equivalent to Rayleigh fading channel [13], [14] Nakagami distribution comprehend direct components with the reflected and scattered component of original transmitted signal.…”