Original scientific paper
https://doi.org/10.24138/jcomss.v15i1.594
Save and Transmit Scheme for Energy Harvesting MIMO Systems with TAS/MRC
Issa Chihaoui
; Innov’COM Laboratory, Higher School of Communication of Tunis, University of Carthage, Tunis, Tunisia
Mohamed Lassaad Ammari
; NOCCS Laboratory, National Engineering School of Sousse, University of Sousse, Tunisia
Abstract
In this paper, we propose and analyze a wirelesstransmitter, for multiple-input multiple-output (MIMO) systems,that relies exclusively on energy harvesting. We consider wirelesstransceivers where the transmitter harvests the total requiredenergy from its environment through various sources. We assumethat both transmitter and receiver are equipped with multipleantennas. At the transmitter, a single transmit antenna thatmaximizes the signal-to-noise ratio (SNR) at the receiver isselected for transmission. The remaining antennas are used forenergy harvesting. At the receiver side, maximal-ratio com-bining (MRC) is used. Furthermore, we assume that all theharvested power is used to power the transmitter immediately.The performance of the proposed scheme is analyzed in terms ofoutage probability (OP), symbol error rate (SER) and channelcapacity. The harvested energy comes from random sourcesand is considered as a random variable. Assuming that theharvested power follows a gamma distribution and the MIMOchannel is a Rayleigh flat fading process, we derive a closed-form expressions for the exact cumulative distribution function(CDF) and probability density function (PDF) of the SNR. Basedon this, we analyze the performance of the proposed energyharvesting scheme. The obtained analytical results are validatedby comparing them with the results of Monte-Carlo simulations.
Keywords
Energy harvesting; MIMO channels; TAS/MRC
Hrčak ID:
217546
URI
Publication date:
1.3.2019.
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