Cognitive radio networks (CRN) will be widely deployed in the near
future, and this SpringerBrief covers some important aspects of it, as
well as highlighting optimization strategies in Resource Allocation and
Spectrum Sensing in CRNs. The cognitive approach in radio access is
introduced in the first part of this SpringerBrief, and then next the
benefits of cooperative spectrum sensing are highlighted and a framework
for studying it under realistic channel conditions is described. New
exact closed-form expressions for average false alarm probability and
average detection probability are derived in this scenario. A novel
approximation to alleviate the computational complexity of the proposed
models are also discussed.
Once the spectrum opportunities are identified, efficient and systematic
resource allocation (RA) shall be performed. The second part of this
SpringerBrief describes the taxonomy for the RA process in CRN. A
comprehensive overview of the optimization strategies of the CRN RA is
also provided. The device-to-device (D2D) communication scenario is
discussed, then as a case study and various optimization strategies for
the application of the CR technology in the D2D realm is studied. The
application of advanced geometric water-filling (GWF) approach in CRN
D2D environment for optimum resource allocation is presented in detail.
Numerical results provide more insight quantitatively. Overall, this
book is suitable for a wide audience that include students, faculty and
researchers in wireless communication area and professionals in the
wireless service industry.
