ERA Cooperative Sensing with Differentiated Sensing Period and Retreat Scheme in Cognitive Radio

During the past dozen years, numerous approaches have been proposed to enhance the efficiency of the cooperative spectrum sensing (CSS) for the cognitive radio (CR) systems. Reducing the signaling overheads and energy consumption during the reporting period are the main targets of these works. In th...

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Bibliographic Details
Main Authors: Wenson Chang, HaoYi Tai, Yinman Lee, Szu-Lin Su
Format: Conference Proceeding
Language:English
Subjects:
Algorithm design and analysis
Cascading style sheets
Cognitive radio
Data communication
Digital signal processing
Gaussian distribution
Sensors
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Summary:During the past dozen years, numerous approaches have been proposed to enhance the efficiency of the cooperative spectrum sensing (CSS) for the cognitive radio (CR) systems. Reducing the signaling overheads and energy consumption during the reporting period are the main targets of these works. In this paper, we propose an efficient reporting and accumulating (ERA) scheme to jointly improve the sensing and reporting efficiency. However, owing to individually reducing the sensing period for each secondary user (SU), the undesired collisions can be incurred while reporting the local decisions. To alleviate the collision problem, a Gaussian retreat (GR) scheme is developed. As verified by the simulation results, higher energy efficiency and spectrum utilization can be achieved. Moreover, the miss-detection probability can become negligible by using the GR scheme.
ISSN:1558-2612
DOI:10.1109/WCNC.2017.7925659