Energy Efficient Subchannel and Power Allocation in Cooperative VLC Systems

被引：17

作者：

Aboagye, Sylvester ^{[1
]}

Ngatched, Telex M. N. ^{[1
]}

Dobre, Octavia A. ^{[1
]}

Armada, Ana G. ^{[2
]}

机构：

[1] Mem Univ Newfoundland, Dept Elect & Comp Engn, St John, NF A1C 5S7, Canada

[2] Univ Carlos III Madrid, Dept Signal Theory & Commun, Leganes 28911, Spain

来源：

IEEE COMMUNICATIONS LETTERS | 2021年 / 25卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Light emitting diodes; Visible light communication; Resource management; Optimization; Interference; Transforms; Signal to noise ratio; energy efficiency; joint transmission; resource allocation; quadratic transform; TRANSMISSION; NETWORKS;

D O I：

10.1109/LCOMM.2021.3058189

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This letter studies the energy efficiency (EE) optimization of cooperative visible light communication (VLC) systems while considering the inter-cell interference and the lineof-sight blockage problems. Specifically, the optimization problem of subchannel and power allocation to maximize EE under transmit power budgets and users' minimum rate constraints is considered. The formulated problem turns out to be a difficult nonlinear fractional program for which a low-complexity iterative solution based on fractional programming theory and the quadratic transform approach is proposed. Extensive simulations are conducted to show the efficacy of the proposed scheme over conventional approaches. In addition, the outage analysis and impacts of varying the transmit power and the subchannel bandwidth on the EE performance are investigated.

引用

页码：1935 / 1939

页数：5

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