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Receive Spatial Modulation Aided Simultaneous Wireless Information and Power Transfer With Finite Alphabet

Zhao, Y; Hu, J; Xie, A; Yang, K; Wong, K-K; (2020) Receive Spatial Modulation Aided Simultaneous Wireless Information and Power Transfer With Finite Alphabet. IEEE Transactions on Wireless Communications , 19 (12) pp. 8039-8053. 10.1109/TWC.2020.3019011. Green open access

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Abstract

As the number of communication devices rapidly grows, limited radio resources hardly accommodate the every-increasing tele-traffic. As a remedy, spatial modulation (SM) is capable of modulating additional information onto the index of transmit or receive antennas, which results in substantial improvement of spectrum efficiency. Moreover, radio frequency (RF) signal based simultaneous wireless information and power transfer (SWIPT) has attracted tremendous research interest, in order to relieve the energy-thirst of massively deployed low-power communication devices. In this paper, a receive spatial modulation (RSM) aided SWIPT system with finite alphabets is studied, in which three different transmission schemes are proposed, namely the general scheme, the superimposed scheme and the distinct scheme. Furthermore, the performance of these transmission schemes in the RSM aided SWIPT system is theoretically analysed. The energy harvested by the receiver is then maximised by jointly optimising the transmit power of the information signal and the covariance matrix of the energy signal as well as the power splitting ratio, while satisfying the quality of service of the wireless information transfer. At last, simulation results validate our theoretical analysis, while they also demonstrate that the distinct scheme has the best SWIPT performance among these three transmission schemes.

Type: Article
Title: Receive Spatial Modulation Aided Simultaneous Wireless Information and Power Transfer With Finite Alphabet
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TWC.2020.3019011
Publisher version: https://doi.org/10.1109/TWC.2020.3019011
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
Keywords: Modulation, Receiving antennas, Transmitting antennas, Wireless communication, RF signals, Radio frequency
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10118651
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