A Hybrid Combination Scheme for Cooperative Spectrum Sensing in Cognitive Radio Networks

Changhua Yao; Qihui Wu
January 2014
Mathematical Problems in Engineering;2014, p1
Academic Journal
We propose a novel hybrid combination scheme in cooperative spectrum sensing (CSS), which utilizes the diversity of reporting channels to achieve better throughput performance. Secondary users (SUs) with good reporting channel quality transmit quantized local observation statistics to fusion center (FC), while others report their local decisions. FC makes the final decision by carrying out hybrid combination. We derive the closed-form expressions of throughput and detection performance as a function of the number of SUs which report local observation statistics. The simulation and numerical results show that the hybrid combination scheme can achieve better throughput performance than hard combination scheme and soft combination scheme.


Related Articles

  • A Multiobjective Evolutionary Algorithm for Energy-Efficient Cooperative Spectrum Sensing in Cognitive Radio Sensor Network. Liu, Weirong; Qin, Gaorong; Li, Shuo; He, Jian; Zhang, Xiaoyong // International Journal of Distributed Sensor Networks;5/13/2015, Vol. 2015, p1 

    Cognitive radio has emerged as a promising solution to address the problems posed by coming spectrum scarcity for the inherently resource-constrained sensor networks. Reliability and energy consumption are key objectives for spectrum sensing in cognitive sensor networks. In this paper, a fast...

  • Selective Sensing and Access Strategy to Maximize Throughput in Cognitive Radio Sensor Network. Weijun Li; Chao Yang; Zhenquan Wu; Beihai Tan; Yuli Fu // International Journal of Distributed Sensor Networks;2014, p1 

    This paper presents a selective spectrum sensing and access strategy in a cognitive radio sensor network (CRSN), in order to maximize the throughput of secondary user (SU) system. An SU senses multiple channels simultaneously via wideband spectrum sensing. To maximize the throughput and reduce...

  • Adaptive Threshold Determination for Efficient Channel Sensing in Cognitive Radio Network using Mobile Sensors. Morshed, M. N.; Khatun, S.; Kamarudin, L. M.; Aljunid, S. A.; Ahmad, R. B.; Zakaria, A.; Fakir, M. M. // AIP Conference Proceedings;2017, Vol. 1808 Issue 1, p1 

    Spectrum saturation problem is a major issue in wireless communication systems all over the world. Huge number of users is joining each day to the existing fixed band frequency but the bandwidth is not increasing. These requirements demand for efficient and intelligent use of spectrum. To solve...

  • Generalized Approach to Signal Processing in Collaborative Wireless Sensor Systems for Target Detection. Tuzlukov, Vyacheslav // Computer Technology & Application;2011, Vol. 2 Issue 4, p358 

    Collaboration in wireless sensor systems must be fault-tolerant due to the harsh environmental conditions at which such systems can be deployed. This paper focuses on finding the signal processing algorithms for collaborative target detection based on the generalized approach to signal...

  • A Novel Blind Event Detection Method for Wireless Sensor Networks. Thuc Kieu-Xuan; Sungsoo Choi; Insoo Koo // Journal of Sensors;2014, p1 

    Student's t-distribution is utilized to derive a novel method for event detection in wireless sensor networks. Numerical analysis is used to show that under the same conditions, the proposed event detection method is comparable to likelihood ratio-based detection method and that it significantly...

  • Connectivity Analysis of Cognitive Radio Ad-hoc Networks with Shadow Fading. Le The Dung; Beongku An // KSII Transactions on Internet & Information Systems;Sep2015, Vol. 9 Issue 9, p3335 

    In this paper, we analyze the connectivity of cognitive radio ad-hoc networks in a log-normal shadow fading environment. Considering secondary user and primary user's locations and primary user's active state are randomly distributed according to a homogeneous Poisson process and taking into...

  • Opportunistic Spectrum Access in Cognitive Radio Ad Hoc Networks. Salem, Tarek M.; Abd El-kader, Sherine M.; Ramadan, Salah M.; Abdel-Mageed, M. Zaki // International Journal of Computer Science Issues (IJCSI);Jan2014, Vol. 11 Issue 1, p41 

    Cognitive Radio (CR) technology is envisaged to solve the problems in wireless networks resulting from the limited available spectrum and the inefficiency in the spectrum usage by exploiting the existing wireless spectrum opportunistically. CR networks, equipped with the intrinsic capabilities...

  • A New Wireless Network Scheme for Spectrum Sensing in Cognitive Radio. Ozbay, Serkan; Ercelebi, Ergun // Electronics & Electrical Engineering;2015, Vol. 21 Issue 6, p90 

    Spectrum sensing task is known to be one of the most important functionalities of a cognitive radio for dynamic spectrum access networks to be aware of the radio environment. Licensed user (primary user) detection has gained a great deal of interest recently on spectrum sensing strategies...

  • Introducing a new method of multiple routing using the AODV algorithm for cognitive radio networks. Mahabady, Gholamreza Khaksar; Yadollahzadeh, Fereshteh // Advances in Natural & Applied Sciences;May2014, Vol. 8 Issue 5, p496 

    Cognitive radio networks are introduced as an efficient method in facing the problem of improper use of frequency spectrum in wireless networks. The routing issue is one of the newest and most important titles of researches in cognitive radio networks with distributed architecture (ad-hoc...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics