Performance evaluation of multiuser Internet of Things wireless‐powered relaying networks with transceiver hardware imperfections over Nakagami‐m fading channels. (7th April 2022)

• Record Type: Journal Article
• Authors: Kharwar, Preeti; Yadav, Suneel; Purohit, Neetesh
• Is Part Of: International journal of communication systems. Volume 35:Number 10(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-04-07
• Subjects: energy harvesting -- transceiver hardware impairments -- ergodic capacity -- Nakagami‐m fading channel -- outage probability -- simultaneous wireless information and power transfer; Telecommunication systems -- Periodicals; 621.382
• DOI: 10.1002/dac.5170
• Languages: English
• ISSNs: 1074-5351

Abstract

Summary: We investigate the performance of multiuser Internet of Things (IoT) relay networks in the presence of transceiver hardware impairments. In particular, K IoT users communicate with a destination via a simultaneous wireless information and power transfer (SWIPT) amplify‐and‐forward relay. We exploit both time‐switching (TS) and power‐splitting (PS) protocols at the SWIPT‐aided relay terminal. Specifically, we derive the exact outage probability (OP) expressions for both TS and PS schemes under transceiver hardware imperfections over Nakagami‐ m fading channels. In addition, we derive the asymptotic OP expressions for both TS and PS schemes in the high signal‐to‐noise ratio regime. From which, the diversity order of K m S R can be achieved, where m S R denotes the fading severity parameter for the channel between K IoT users and relay. Furthermore, we present a tight upper bound for the ergodic capacity (EC) under both TS and PS schemes with transceiver hardware impairments over Nakagami‐ m fading channels. Moreover, our results demonstrate the impact of number of IoT users, fading severity parameters, TS factor, PS factor, and energy conversion efficiency, on the system performance. We also validate our analytical findings via numerical and simulation results. Abstract : This paper investigates the performance of simultaneous wireless information and power transfer (SWIPT)‐enabled multiuser Internet of Things relay networks in the presence of transceiver hardware impairments. Specifically, we derive the outage probability, asymptotic outage probability, and ergodic capacity expressions for both time‐switching (TS) and power‐splitting (PS) SWIPT protocols over Nakagami‐ m fading channels.