SSK modulated WPCN with Euclidean distance based selection combining receiver
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SSK modulated WPCN with Euclidean distance based selection combining receiver Hemanta Kumar Sahu1 Accepted: 12 October 2020 Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In this paper, the performance of space shift keying (SSK) modulation in a wireless-powered communication network (WPCN) is analysed with selection combining based on generalized Euclidean distance at the receiver. The network considered here is with multiple number of transmitting antennas and multiple number of receiving antennas operates under Rayleigh fading. Based on the Euclidean distance between the SSK modulation constellation points, this scheme selects any number of antennas out of Na receiving antennas. Selecting one or Nr (Nr \Na ) number of receiving antennas with energy harvesting, the system performance will improve and the receiver complexity as well as the number of radio frequency (RF) chains can be reduced. A closed form expression for the average bit error probability (ABEP) is derived for two transmitting antennas and Na receiving antennas with WPCN using SSK modulation. The numerical results and simulation results are presented to illustrate the energy harvesting on system performance. Keywords WPCN SSK modulation Fading channel MIMO communication Performance analysis
1 Introduction The rapid increasing demands of data-rate and massive growth in multimedia traffic, trigger an upcoming technology for next-generation wireless communication. The advent of the internet of things (IoT) can improve the lifestyle by allowing the massive data-rate and less multimedia traffic friendly and economically [1]. However, an effective increase in the number of IoT devices, the vast demand for wireless communication has triggered a sharp rise in energy consumption. Energy harvesting for wireless communication is a solution to prolong the lifetime of energy constrained nodes like IoT and low power sensors terminals. Energy can be harvested from radio frequency (RF) signals radiated by ambient transmitters to power the user terminals wirelessly [2]. Wireless powered communication network (WPCN) technology is based on the fact that RF signals can carry both energy and information, and & Hemanta Kumar Sahu [email protected] 1
Department of Electronics and Computer Engineering, Vignan’s Institute of Information Technology, Duvvada, Visakhapatnam 530049, India
the energy constrained node can harvest energy from RF signals [3]. The recent technology like wireless sensor networks, wireless body networks, and radio-frequency identification networks are examples of WPCN. Therefore, WPCN is an alternative to conventional battery-powered wireless networks in some restricted conditions like production plants, battlefields, remote areas under surveillance, etc. The benefits of WPCN compared to conventional battery-powered networks are (a) stable power supply under different physical conditions (b) elimination of frequent replacement of battery (c) higher throughp
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