Abstract:
The spectrum sensing method's dependability is greatly influenced by two of the most crucial factors,
including various fading channels and nearby wireless users. Multipath fading, buried terminals, and shadowing are just a few of
the challenges encountered by users of non-cooperative spectrum sensing systems. Cooperative spectrum sensing approach gives a
remedy for this issue. With the use of the common receiver, CSS permits the user to detect the spectrum. Additionally, it has been
separated into distributed CSS (D-CSS) and centralized CSS (C-CSS). By using particular rules to identify the presence of the
licensed user, both concepts are compared to one another in this article. The effectiveness of cluster-based distributed cooperative
spectrum sensing over two-wave diffuse power fading channels (TWDP Channel) is also examined in the article. Wei-bull and Hoyt
fading channels are two examples of fading channels that have previously exploited this idea. In this paper, simulation findings for
the less well-known two-wave with diffuse power channels are reviewed. This work mainly focused on CSS over TWDP fading
channels along with several proposed approach for two stage hard decision strategies using AND fusion and OR fusion. The
simulation performance findings for TWDP fading situation enhance the OR_AND fusion strategy detection performance at various
SNR levels. The presented D-CSS approach helps users to get beyond the difficulty they have when using non-cooperative spectrum
sensing and lists the relationship among detection efficiency and power consumption for Cognitive radio technology used in
constrained wireless environments.
