Analytical Simulation and Performance Optimization for Spectrum Sensing in Cognitive Radio Networks
Journal Title: International Journal on Computer Science and Engineering - Year 2011, Vol 3, Issue 2
Abstract
Dynamic spectrum allocation (DSA) solutions such as cognitive radio networks (CRNs) have been proposed as a key technology to exploit the frequency segments that are spectrally underutilized. In this paper, the performance of cooperative CRNs has been analyzed under two different operational modes, namely, constant primary user protection (CPUP) and constant secondary user spectrum usability (CSUSU). The CRN performance metrics have been selected to be the overall CRN capacity and the overall interference from CRN to the primary users under CPUP and CSUSU scenario, respectively. Computer simulations are invoked to evaluate the CRN performance with varying the sensing time as well as the number of cooperating users in the network and the observations have been presented. Finally, particle swarm optimization algorithm has been used to jointly optimize the sensing time duration and cooperation level of spectrum sensing in CRNs. The simulation results show that the CRN performance can be noticeably improved by applying suitable optimization algorithms.
Authors and Affiliations
Ayman A. El-Saleh , Mahamod Ismail , Mohd Alauddin Mohd Ali1 , M. R. Kamarudin , T. A. Rahman
Keywords
Related Articles
- EP ID EP139762
- DOI -
- Views 116
- Downloads 0
Determination of Angry Condition based on EEG, Speech and Heartbeat
This paper determines the angry emotion condition by analyzing and recognizing speech signal, EEG signal, as well as detecting the heartbeat. For the speech analyzing experiment, several digital signal processing methods...
Multi Subgroup Data Compression Technique Using Switch Code
Data compression is the art of converting a data stream into a small in size data bits so that it can be easily travel a long istance without increasing load of its volume on a constant Bandwidth channel regardless of i...
Evaluation of Next Generation Networks
Abstract—Next Generation Networks have a major impact on existing communications technology. NGN allows the convergence of multiple applications to run on the same network;consist of voice, data and video and other new m...
MLIP: A Concurrent Approach for Clipping Indexing
Multidimensional databases are beginning to be used in a wide range of applications. To meet this fast-growing demand, the R-tree family is being applied to support fast access to multidimensional data, for which the R+-...
Color Image Segmentation for Satallite Images
This paper introduces efficient and fast algorithms for unsupervised image segmentation, using low-level features such as color, applied on satellite images. With the increase in spatial resolution of satellite imagery,...