Optimal Power Allocation for a Relaying-Based Cognitive Radio Network in a Smart Grid

被引：7
|
作者：
Ma, Kai [1 ]
Liu, Xuemei [1 ]
Yang, Jie [1 ,2 ]
Liu, Zhixin [1 ]
Yuan, Yazhou [1 ]
机构：
[1] Yanshan Univ, Sch Elect Engn, Qinhuangdao 066004, Peoples R China
[2] Shanghai Jiao Tong Univ, Dept Automat, Key Lab Syst Control & Informat Proc, Minist Educ, Shanghai 200240, Peoples R China
来源：
ENERGIES | 2017年 / 10卷 / 07期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
cognitive wireless network; smart grid; DAU; relay; power allocation; PSO; PARTICLE SWARM OPTIMIZATION; USER COOPERATION DIVERSITY; TECHNOLOGIES; DESIGN; COMMUNICATION; SYSTEMS;
D O I：
10.3390/en10070909
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper obtains optimal power allocation to the data aggregator units (DAUs) and relays for cognitive wireless networks in a smart grid (SG). Firstly, the mutual interference between the primary user and the DAU are considered, and the expressions of the DAU transmission signal are derived based on the sensing information. Secondly, we use the particle swarm optimization (PSO) algorithm to search for the optimal power allocation to minimize the costs to the utility company. Finally, the impact of the sensing information on the network performance is studied. Then two special cases (namely, that only one relay is selected, and that the channel is not occupied by the primary user) are discussed. Simulation results demonstrate that the optimal power allocation and the sensing information of the relays can reduce the costs to the utility company for cognitive wireless networks in a smart grid.
引用
收藏
页数：17
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