Optimization of Cooperative Spectrum Sensing Based on OFDM for Cognitive Radio Networks

doi:10.13190/j.jbupt.2015.05.018

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2015, Vol. 38 ›› Issue (5): 96-98,103.doi: 10.13190/j.jbupt.2015.05.018

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Optimization of Cooperative Spectrum Sensing Based on OFDM for Cognitive Radio Networks

LI Ying-xue¹, ZHONG Shi-yuan¹, LEI Jing², HUANG Chun-ming¹, YAO Zhu-xiang²

1. State Grid Jiangxi Economic Research Institute, Nanchang 330043, China;
2. State Grid Jiangxi Electric Power Company, Nanchang 330077, China

Received:2015-01-06 Online:2015-10-28 Published:2015-10-28

Abstract

Abstract:

Utilizing the cyclic prefix characteristic of orthogonal frequency division multiplexing(OFDM) signal, this paper optimizes the system weight vector with the improved maximum deflection coefficient, proposes a multiuser cooperation detection algorithm, and obtains optimized weight vector expression. Theoretical analysis and simulation results demonstrate the remarkable improvement of proposed algorithm on detection performance compared with the classical cooperation detection algorithm.

Key words: cyclic prefix, cooperative sensing, deflection coefficient, orthogonal frequency division multiplexing, performance optimization

CLC Number:

TN929.53

LI Ying-xue, ZHONG Shi-yuan, LEI Jing, HUANG Chun-ming, YAO Zhu-xiang. Optimization of Cooperative Spectrum Sensing Based on OFDM for Cognitive Radio Networks[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(5): 96-98,103.

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Optimization of Cooperative Spectrum Sensing Based on OFDM for Cognitive Radio Networks

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