Throughput maximisation for multi-channel energy harvesting cognitive radio networks with hybrid overlay/underlay transmission
Throughput maximisation for multi-channel energy harvesting cognitive radio networks with hybrid overlay/underlay transmission
复制标题
具有混合覆盖/底层传输的多通道能量收集认知无线电网络的吞吐量最大化
DOI：
10.1049/cmu2.12347
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发表时间：
2022-02
影响因子：
1.6
通讯作者：
Jia Liu
中科院分区：
文献类型：
--
作者：
Kechen Zheng;Wendi Sun;Xiaoying Liu;Dongdong Zhao;Yang Xu;Jia Liu
本文重点研究了多通道能量收集CR网络（EH - crn）中的联合时间和功率分配问题，其中多天线二次发射机（ST）通过混合覆盖/底层传输方法机会地访问许可子信道。为了提高EH - crn的频谱效率和能量效率，ST从主发射机辐射的射频信号中清除能量，并利用收集到的能量同时通过不同状态的子信道以覆盖/底层模式传输数据。在干扰功率约束、能量约束和最大功率约束下，通过优化子信道的分配、能量采集和数据传输之间的时间调度以及ST在不同子信道之间的功率分配，提高了二次吞吐量。提出了一种低时间复杂度的子信道分配方案，建立了基于st的时间调度和功率分配的二次吞吐量优化问题，证明了该问题的凸性，并提出了一种时间和功率联合分配算法来求解该问题。数值结果表明，该方案在二次吞吐量方面优于其他方案。最后，探讨了关键相关因素对二次吞吐量的影响。
This paper focuses on the issue of joint time and power allocation in multi‐channel energy harvesting CR networks (EH‐CRNs), where the multi‐antenna secondary transmitter (ST) opportunistically accesses the licensed subchannels by a hybrid overlay/underlay transmission approach. To improve spectrum efficiency and energy efficiency of the EH‐CRNs, the ST scavenges energy from the radio‐frequency signal radiated by the primary transmitter, and exploits the harvested energy for data transmission through subchannels of different states in overlay/underlay mode simultaneously. Moreover, under the interference power constraint, energy constraint, and maximum power constraint, the secondary throughput is improved by optimising the allocation of subchannels, the time scheduling between energy harvesting and data transmission, and the power allocation of the ST among different subchannels. A subchannel allocation scheme with low time complexity is proposed, and the secondary throughput optimisation problem is formulated with respect to the time scheduling and power allocation of the ST. Then it is proved the problem is convex, and the problem is solved by a proposed joint time and power allocation algorithm. Numerical results show that the proposed scheme has an advantage of secondary throughput over the other schemes. Finally, the impacts of key relevant factors on the secondary throughput are explored.
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影响因子：
10.4
作者：
Huijin Cao;Hongqiao Tian;Jun Cai;A. Alfa;Shiwei Huang
通讯作者：
Huijin Cao;Hongqiao Tian;Jun Cai;A. Alfa;Shiwei Huang
影响因子：
--
作者：
SHANNON, CE
通讯作者：
SHANNON, CE
DOI：
10.1109/98.788210
发表时间：
1999-08-01
期刊：
IEEE PERSONAL COMMUNICATIONS
影响因子：
--
作者：
Mitola, J;Maguire, GQ
通讯作者：
Maguire, GQ
影响因子：
--
作者：
SHANNON, CE
通讯作者：
SHANNON, CE
影响因子：
10.4
作者：
S. Senthuran;A. Anpalagan;O. Das
通讯作者：
S. Senthuran;A. Anpalagan;O. Das