Two Step Cooperative Spectrum Sensing Scheme over Fading Channels for Cognitive Radio

doi:10.13190/j.jbupt.2017-046

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2017, Vol. 40 ›› Issue (6): 92-97.doi: 10.13190/j.jbupt.2017-046

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Two Step Cooperative Spectrum Sensing Scheme over Fading Channels for Cognitive Radio

CHU Guang-qian^1,2, NIU Kai¹, WU Wei-ling¹, YANG Fang-liao¹

1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. School of Information and Science and Electrical Engineering, Shandong Jiaotong University, Jinan 250357, China

Received:2017-04-09 Online:2017-12-28 Published:2017-12-28
Supported by:

Abstract

Abstract: In the cognitive radio network, the performance of spectrum sensing by a single user with a single antenna may degrade significantly. In order to improve the detection performance and reduce spectrum sensing data transmission overhead, a two step cooperative spectrum sensing scheme was proposed. Simulations show that proposed scheme can significantly improve the detection reliability by overcoming multi-path fading, shadowing and the receiver uncertainty problem. The proposed scheme combines the advantages of the soft combination and the hard combination schemes. In addition, it will reduce the network overload and improves the detection performance.

Key words: two steps cooperative spectrum sensing, cognitive radio networks, fading channels

CLC Number:

TN911.22

CHU Guang-qian, NIU Kai, WU Wei-ling, YANG Fang-liao. Two Step Cooperative Spectrum Sensing Scheme over Fading Channels for Cognitive Radio[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2017, 40(6): 92-97.

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Two Step Cooperative Spectrum Sensing Scheme over Fading Channels for Cognitive Radio

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