Abstract
In cognitive radio (CR), a secondary user (SU) may consume more energy due to spectrum sensing. In order to guarantee transmission performance of the SU, a bandwidth allocation-based simultaneous cooperative spectrum sensing and energy harvesting for multicarrier CR is proposed, which can collect the radio frequency (RF) energy of the wireless signal from primary user (PU) to supply the consumed sensing energy. Each subcarrier is split into spectrum sensing bandwidth, energy harvesting bandwidth and transmission bandwidth, thus cooperative spectrum sensing, energy harvesting and data transmission can be implemented simultaneously within transmission time. Multicarrier cooperative spectrum sensing is proposed to improve sensing performance and decrease cooperative overhead through combining the sensing results from all the subcarriers. A joint optimization problem has been formulated to achieve the maximal throughput of the SU by jointly optimizing sensing bandwidth ratio and subcarrier power. Simulation results have shown that there exists an optimal sensing bandwidth that maximizes the throughput and the performance of the proposed model is predominant.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
