Throughput Maximization in Multicarrier Wireless Powered Relaying Networks

被引：16

作者：

Diamantoulakis, Panagiotis D. ^{[1
]}

Ntouni, Georgia D. ^{[1
]}

Pappi, Koralia N. ^{[1
]}

Karagiannidis, George K. ^{[1
,2
]}

Sharif, Bayan S. ^{[2
]}

机构：

[1] Aristotle Univ Thessaloniki, Thessaloniki 54124, Greece

[2] Khalifa Univ, Abu Dhabi 127788, U Arab Emirates

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2015年 / 4卷 / 04期

关键词：

Wireless power transfer; relay; power allocation; amplify-and-forward; INFORMATION;

D O I：

10.1109/LWC.2015.2424237

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Dynamic power allocation and power splitting, in a multicarrier two-hop link with a wireless powered relay, is investigated. We first formulate the corresponding optimization problem, which consists of the joint optimization -in terms of achievable rate-of, 1) the dynamic power allocation among multiple channels and, 2) the selection of the power splitting ratio between information processing and energy harvesting at the relay, when amplify-and-forward is applied. This is a non-convex optimization problem, which is mapped to a convex one and optimally solved using one-dimensional search and dual decomposition, while a suboptimal efficient iterative method is also proposed. Simulations reveal a significant increase in the throughput, when comparing the proposed approach with two alternative power allocation schemes, while they verify the effectiveness of the fast-converging iterative solution.

引用

页码：385 / 388

页数：4

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