Energy Efficiency Analysis in Modified GoF Spectrum Sensing-Based AF Relay Cooperative Cognitive Sensor Network with Energy Harvesting
文献类型：期刊论文
| 作者 | Mi, Yin1,2; Lu, Guangyue2; Gao, Wenbin2 |
| 刊名 | Security and Communication Networks
 |
| 出版日期 | 2021 |
| 卷号 | 2021 |
| ISSN号 | 19390114;19390122 |
| DOI | 10.1155/2021/3340525 |
| 产权排序 | 1 |
| 英文摘要 | In this paper, we propose a joint sensing duration and transmission power allocation scheme to maximize the energy efficiency (EE) of the secondary user (SU) in a cooperative cognitive sensor network (CSN). At the initial time slot of the frame, the secondary transmitter (ST) performs energy harvesting (EH) and spectrum sensing simultaneously using power splitting (PS) protocol. The modified goodness of fit (GoF) spectrum sensing algorithm is employed to detect the licensed spectrum, which is not sensitive to an inaccurate noise power estimate. Based on the imperfect sensing results, the ST will act as an amplify-and-forward (AF) relay and assist in transmission of the primary user (PU) or transmit its own data. The SU's EE maximization problem is constructed under the constraints of meeting energy causality, sensing reliability, and PU's quality of service (QoS) requirement. Since the SU's EE function is a nonconvex problem and difficult to solve, we transform the original problem into a tractable convex one with the aid of Dinkelbach's method and convex optimization technique by applying a nonlinear fractional programming. The closed-form expression of the ST's transmission power is also derived through Karush-Kuhn-Tucker (KKT) and gradient method. Simulation results show that our scheme is superior to the existing schemes. © 2021 Yin Mi et al. |
| 语种 | 英语 |
| 出版者 | Hindawi Limited |
| 源URL | [http://ir.opt.ac.cn/handle/181661/95625]  |
| 专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
| 作者单位 | 1.Xi'An Institute of Optics and Precision Mechanics of CAS, University of Chinese Academy of Sciences, Xi'an; 710119, China; 2.School of Communications and Information Engineering, Xi'An University of Posts and Telecommunications, Xi'an; 710121, China |
| 推荐引用方式 GB/T 7714 | Mi, Yin,Lu, Guangyue,Gao, Wenbin. Energy Efficiency Analysis in Modified GoF Spectrum Sensing-Based AF Relay Cooperative Cognitive Sensor Network with Energy Harvesting[J]. Security and Communication Networks,2021,2021. |
| APA | Mi, Yin,Lu, Guangyue,&Gao, Wenbin.(2021).Energy Efficiency Analysis in Modified GoF Spectrum Sensing-Based AF Relay Cooperative Cognitive Sensor Network with Energy Harvesting.Security and Communication Networks,2021. |
| MLA | Mi, Yin,et al."Energy Efficiency Analysis in Modified GoF Spectrum Sensing-Based AF Relay Cooperative Cognitive Sensor Network with Energy Harvesting".Security and Communication Networks 2021(2021). |
入库方式： OAI收割
来源：西安光学精密机械研究所
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