Adaptive Spectrum Sensing for Time-Varying Channels in Cognitive Radios

作者：He, Hao^*; Li, Geoffrey Ye; Li, Shaoqian

来源：IEEE Wireless Communications Letters, 2013, 2(2): 227-230.

DOI：10.1109/WCL.2013.012513.120810

• Cognitive radio
• spectrum sensing
• time-varying channel

In this article, we develop a novel adaptive spectrum sensing scheme to improve the throughput of cognitive radio (CR) users. The new scheme takes the variation of wireless channels into consideration and requires no priori knowledge of primary user activity statistics. At the beginning of each time frame, this adaptive sensing scheme adjusts the spectrum sensing parameters according to the latest sensing results and channel state information (CSI) of the time-varying channels. Numerical results show that the proposed adaptive spectrum sensing scheme can significantly outperform the traditional spectrum sensing scheme.

• 出版日期2013-4
• 单位电子科技大学