TITLE:
Efficient Performance Analysis of Spectrum Sensing for Cascaded Multihop Network over Nagakami-m Fading Channels
AUTHORS:
Deepti Kakkar, Arun Khosla, Moin Uddin
KEYWORDS:
Spectrum Sensing; Energy Detection; Nakagami-m Wireless Link; Probability of Detection; Relay Protocol; Cascaded Multihop Communication
JOURNAL NAME:
Engineering,
Vol.6 No.2,
February
10,
2014
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.