Chapter 2

Power Allocation for Point-to-Point Energy Harvesting Channels

Chuan Huang

Chuan Huang

University of Electronic Science and Technology of China, Chengdu, China

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Sheng Zhou

Sheng Zhou

Tsinghua University, Beijing, China

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Jie Xu

Jie Xu

Guangdong University of Technology, Guangzhou, China

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Zhisheng Niu

Zhisheng Niu

Tsinghua University, Beijing, China

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Rui Zhang

Rui Zhang

National University of Singapore, Singapore

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Shuguang Cui

Shuguang Cui

University of California, Davis, USA

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First published: 07 December 2018

Summary

This chapter considers the simplest point-to-point energy harvesting (EH) channel with a single EH-powered wireless transmitter communicating with a single wireless receiver. It builds a general utility optimization framework to reveal the key design principles of the point-to-point EH channel by considering the scenario with the receiver powered by a fixed energy supply and an ideal transmitter with an infinite energy storage and perfect circuits. The chapter applies the framework to solve two specific problems including the throughput maximization and the outage probability minimization, which are commonly adopted in the wireless literature as the communication performance metrics. It extends the power allocation strategies to more practical setups by considering the limited energy storage and imperfect circuits at the wireless transmitter. The chapter also discusses the power allocation when both the transmitter and the receiver are EH powered.

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