Performance Evaluation of Cluster Based Cooperative Cognitive Radio Network
Cognitive radio is regarded as one of the transformational technologies that play a fundamental role in establishment and development of next generation wireless networks. Clustering based cognitive radio networks can reduce the energy consumption and increase the spectrum sensing accuracy. In this paper, we investigate the performance of a cognitive radio network with a clustering architecture for cooperative spectrum sensing. The network efficiency is evaluated in terms of throughput and energy consumption, under fading channel conditions. Simulation results show significant improvement of energy efficiency compared to the conventional non-clustering method by ensuring allowable interference with primary users.
 S. Haykin, "Cognitive radio: brain-empowered wireless communications," in IEEE Journal on Selected Areas in Communications, vol. 23, no. 2, pp. 201-220, Feb. 2005.
 A. Ghasemi and E. S. Sousa, "Collaborative spectrum sensing for opportunistic access in fading environments," First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005., Baltimore, MD, USA, 2005, pp. 131-136.
 S. M. Mishra, A. Sahai and R. W. Brodersen, "Cooperative Sensing among Cognitive Radios," 2006 IEEE International Conference on Communications, Istanbul, 2006, pp. 1658-1663.
 A. A. Abbasi and M. Younis. "A survey on clustering
algorithms for wireless sensor networks," Computer Communications, Vol. 30, Issues 14–15, pp. 2826–2841, October 15 2007.
 R. Kumar and U. Kumar, "A Hierarchal Cluster Framework for Wireless Sensor Network," Advances in Computing and Communications (ICACC), 2012 International Conference on, Cochin, Kerala, 2012, pp. 46-50.
 N. Reisi, M. Ahmadian, V. Jamali and S. Salari, "Cluster-based cooperative spectrum sensing over correlated log-normal channels with noise uncertainty in cognitive radio networks," in IET Communications, vol. 6, no. 16, , pp. 2725-2733, November 6 2012.
 C. Sun, W. Zhang and K. B. Letaief, "Cluster-Based Cooperative Spectrum Sensing in Cognitive Radio Systems," 2007 IEEE International Conference on Communications, Glasgow, 2007, pp. 2511-2515.
 Y. Wang, W. Lin, Y. Huang and W. Ni, "Optimization of Cluster-Based Cooperative Spectrum Sensing Scheme in Cognitive Radio Networks with Soft Data Fusion," Journal of Wireless Personal Communications, Volume 77, Issue 4, pp. 2871-2888, August 2014.
 S. Liu, L. Lazos and M. Krunz, "Cluster-Based Control Channel Allocation in Opportunistic Cognitive Radio Networks," in IEEE Transactions on Mobile Computing, vol. 11, no. 10, pp. 1436-1449, Oct. 2012.
 W. Zhang, Y. Yang and C. K. Yeo, "Cluster-Based Cooperative Spectrum Sensing Assignment Strategy for Heterogeneous Cognitive Radio Network," in IEEE Transactions on Vehicular Technology, vol. 64, no. 6, pp. 2637-2647, June 2015.
 Z. Bai, L. Wang, H. Zhang and K. Kwak, "Cluster-based cooperative spectrum sensing for cognitive radio under bandwidth constraints," Communication Systems (ICCS), 2010 IEEE International Conference on, Singapor, 2010, pp. 569-573.
 J. H. Park, Y. Nam and J. M. Chung, "Analysis of channel access with spectrum handoff in cluster based cognitive radio sensor networks," 2013 International Conference on ICT Convergence (ICTC), Jeju, 2013, pp. 232-233.
 F. Afsana, N. Jahan, F. A. Sunny, M. S. Kaiser and S. A. Mamun, "Trust and energy aware Cluster modeling and spectrum handoff for cognitive radio ad-hoc network," Electrical Engineering and Information Communication Technology (ICEEICT), 2015 International Conf. on, Dhaka, 2015, pp. 1-6.
 N. Shirke, K. Patil, S. Kulkarni and S. Markande, "Energy efficient cluster based routing protocol for distributed Cognitive Radio Network," Networks & Soft Computing (ICNSC), 2014 First International Conference on, Guntur, 2014, pp. 60-65.
 N. Mansoor, A. K. M. M. Islam, S. Baharun, S. Komaki and K. Wada, "CoAd: A cluster based adhoc cognitive radio networks architecture with broadcasting protocol," Informatics, Electronics & Vision (ICIEV), 2013 International Conference on, Dhaka, 2013, pp. 1-6.
 Y. Saleem, K.L A. Yau, H. Mohamad, N. Ramli and M. H. Rehmani"SMART: A SpectruM-Aware ClusteR-based rouTing scheme for distributed cognitive radio networks," Computer Networks, Volume 91, pp. 196–224, Nov. 2015.