Zhao, Yizhe and Hu, Jie and Yang, Kun and Wong, Kai-Kit (2021) Unary Coding Design for Simultaneous Wireless Information and Power Transfer With Practical M-QAM. IEEE Transactions on Wireless Communications, 20 (5). pp. 2850-2862. DOI https://doi.org/10.1109/twc.2020.3044722
Zhao, Yizhe and Hu, Jie and Yang, Kun and Wong, Kai-Kit (2021) Unary Coding Design for Simultaneous Wireless Information and Power Transfer With Practical M-QAM. IEEE Transactions on Wireless Communications, 20 (5). pp. 2850-2862. DOI https://doi.org/10.1109/twc.2020.3044722
Zhao, Yizhe and Hu, Jie and Yang, Kun and Wong, Kai-Kit (2021) Unary Coding Design for Simultaneous Wireless Information and Power Transfer With Practical M-QAM. IEEE Transactions on Wireless Communications, 20 (5). pp. 2850-2862. DOI https://doi.org/10.1109/twc.2020.3044722
Abstract
Relying on the propagation of modulated radio-frequency (RF) signals, we can achieve simultaneous wireless information and power transfer (SWIPT) to support low-power communication devices. In this paper, we proposed a unary coding based SWIPT encoder by considering a practical M-QAM. Markov chains are exploited for characterising coherent binary information source and for modelling the generation process of modulated symbols. Therefore, both mutual information and the average energy harvesting performance at the SWIPT receiver are analysed in semi-closed-form. With the aid of the genetic algorithm, the sub-optimal codeword distribution of the coded information source is obtained by maximising the average energy harvesting performance, while satisfying the requirement of the mutual information. Simulation results demonstrate the advantage of the SWIPT encoder. Moreover, a higher-level unary code and a lower-order M-QAM results in higher WPT performance, when the maximum transmit power of the modulated symbol is fixed.
Item Type: | Article |
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Uncontrolled Keywords: | Simultaneous wireless information and power transfer (SWIPT); unary coding; modulation; Markov chain; genetic algorithm |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 28 Jan 2022 11:30 |
Last Modified: | 16 May 2024 20:39 |
URI: | http://repository.essex.ac.uk/id/eprint/32149 |
Available files
Filename: Joint coding and modulation.pdf