ABSTRACT
The detection performance of ED degrades due to the effects of multipath fading and shadowing. To alleviate this problem, antenna diversity and cooperative spectrum sensing are used that improves the detection capability by exploiting the antenna and space diversity. In this chapter, novel detection algorithms for cooperative wideband spectrum are discussed in which all the cooperating secondary users possess multiple antennas. In effect, both space and antenna diversity are utilized to improve the performance. Two algorithms are discussed where hard combining and soft combining are utilized at the fusion center. Experiments are carried out using theoretical analysis and also verified using Monte Carlo (MC) simulations. The analysis shows that the proposed approaches outperform ranked channel detection used under no cooperation, ranked square law selection (R-SLS), and ranked square law combining (R-SLC) algorithms. The effect of different parameters on the performance of the proposed algorithms is also analyzed.
