%0 Journal Article
%T Media Access with Spatial Reuse for Cooperative Spectrum Sensing
%A Xiao Shao
%A Harry Leib
%J Wireless Sensor Network
%P 205-237
%@ 1945-3086
%D 2017
%I Scientific Research Publishing
%R 10.4236/wsn.2017.97012
%X The increasing interest for wireless communication services and scarcity of
radio spectrum resources have created the need for a more flexible and efficient
usage of the radio frequency bands. Cognitive Radio (CR) emerges as an
important trend for a solution to this problem. Spectrum sensing is a crucial
function in a CR system. Cooperative spectrum sensing can overcome fading
and shadowing effects, and hence increase the reliability of primary user detection.
In this paper we consider a system model of a dedicated detect-andforward
wireless sensor network (DetF WSN) for cooperative spectrum sensing
with k-out-of-n decision fusion in the presence of reporting channels errors.
Using this model we consider the design of a spatial reuse media access
control (MAC) protocol based on TDMA/OFDMA to resolve conflicts and
conserve resources for intra-WSN communication. The influence of the MAC
protocol on spectrum sensing performance of the WSN is a key consideration.
Two design approaches, using greedy and adaptive simulated annealing
(ASA) algorithms, are considered in detail. Performance results assuming a
grid network in a Rician fading environment are presented for the two design
approaches.
%K Cooperative Spectrum Sensing
%K Wireless Sensor Network
%K Media Access
%K Spatial Reuse
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=78236