A Spectrum and Energy Cooperation Strategy in Hierarchical Cognitive Radio Cellular Networks

Kun Yueh Hsieh, Fan Shuo Tseng, Meng Lin Ku

研究成果: 雜誌貢獻期刊論文同行評審

22 引文 斯高帕斯(Scopus)

摘要

In this letter, we proposed a novel spectrum and energy cooperation strategy in a hierarchical cognitive radio (HCR) cellular network. In our design, the primary receiver (PR) is equipped with a time-splitting energy harvesting (EH) device such that the primary system (PS) can share its spectrum to the secondary system (SS) and harvest the radiation for charging from the secondary base station (SB) in return. To achieve such a win-win strategy, the SB's precoder and the time-splitting factor are jointly optimized by maximizing the SS's information rate, providing that the PS's information rate and harvested energy are guaranteed. The design problem is equivalently formulated and solved via a semidefinite relaxation (SDR) optimization approach. Simulation results show the promising performance of the proposed cooperation strategy.

原文???core.languages.en_GB???
文章編號7409959
頁(從 - 到)252-255
頁數4
期刊IEEE Wireless Communications Letters
5
發行號3
DOIs
出版狀態已出版 - 6月 2016

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