IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
Optimal energy-efficient power allocation with physical network coding in 60GHz OFDM system
Zhijun LiuXiaofeng TaoWaheed ur RehmanXiaodong Xu
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2014 Volume 3 Issue 2 Pages 86-91

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Abstract

In this letter, we investigate energy-efficiency power allocation (PA) based on physical layer network coding (PNC) in 60GHz orthogonal frequency division multiple (OFDM) system. To optimization the energy-efficiency with required system throughput requirement, we formulate the objective task as a constrained minimization problem. The closed form minimum power allocation solutions are obtained by analyzing Karush-Kuhn-Tucker (KKT) conditions. Based on the derived solution, we propose a novel optimal energy-efficient power allocation (OE-PA) scheme. Numerical results have demonstrated the energy-efficient optimality of the derived scheme as compared to other conventional power allocation schemes.

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© 2014 The Institute of Electronics, Information and Communication Engineers
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