Performance Analysis of Energy Harvesting-Assisted Overlay Cognitive NOMA Systems With Incremental Relaying

Abstract

In this paper, we analyze the performance of an energy harvesting (EH)-assisted overlay cognitive non-orthogonal multiple access (NOMA) system. The underlying system consists of a primary transmitter-receiver pair accompanied by an energy-constrained secondary transmitter (ST) with its intended receiver. Accordingly, ST employs a time switching (TS) based receiver architecture to harvest energy from radio-frequency signals of the primary transmissions, and thereby uses this energy to relay the primary information and to transmit its own information simultaneously using the NOMA principle. For this, we propose two cooperative spectrum sharing (CSS) schemes based on incremental relaying (IR) protocol using amplify-and-forward (AF) and decode-and-forward (DF) strategies, viz., CSS-IAF and CSS-IDF, and compare their performance with the competitive fixed relaying based schemes. The proposed IR-based schemes adeptly avail the degrees-of-freedom to boost the system performance. Thereby, considering the realistic assumption of the NOMA-based imperfect successive interference cancellation, we derive the expressions of outage probability for the primary and secondary networks under both CSS-IAF and CSS-IDF schemes subject to the Nakagami-m fading. In addition, we quantify the throughput and energy efficiency for the considered system. The obtained theoretical findings are finally validated through numerous analytical and simulation results to reveal the advantages of the proposed CSS schemes over the baseline direct link transmission and orthogonal multiple access schemes.Index Terms-Amplify-and-forward, cognitive radio, decode-and-forward, energy harvesting, incremental relaying, non-orthogonal multiple access (NOMA), overlay spectrum sharing, simultaneous wireless information and power transfer (SWIPT).Recently, the NOMA technique has been commonly debated in the context of cognitive radio (CR), which is another potential This work is carried out under BRICS Multilateral R&D Project with No.

A Survey on Energy harvested Cooperative Communication System

“…The energy harvested using PS-EH, the relay transmits the signals at the receiver and after employing MRC rule, the signal is utilised for information decoding. Massive MIMO [77], [78], [79], [80], [79], [83], [84] [81], [82], [84] D2D communication [85], [86], [87], [88] [89], [90], [91] [89], cognitive radio [92], [93], [94], [95], [98], [99], [100], [101] [96], [97] multi-user network [102], [103], [104]…”

Performance evaluation of nonlinear energy scavenging overlay networks

“…Linear energy scavenging overlay networks (LESONs) were investigated extensively. [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] Nevertheless, few works focused on NLESONs. 16,18,[44][45][46] To be more specific, Solanki et al 16 suggested a system model of NLESONs almost same as Figure 1 but with multiple PDs.…”

“…Linear energy scavenging overlay networks (LESONs) were investigated extensively 27–43 . Nevertheless, few works focused on NLESONs 16,18,44–46 .…”

Performance of Wireless Powered Communication Systems Over Beaulieu-Xie Channels With Nonlinear Energy Harvesters

“…Such work builds upon several foundational studies. These include analyses of throughput for delay-limited and delay-tolerant transmission [12], average error rate and outage probability (OP) for WPC systems with Nakagamim fading channels [26], energy storage effects on OP [27], OP and average throughput of information transfer with Nakagami-m fading channels [28], EH-assisted overlay cognitive non-orthogonal multiple access systems with Nakagami-m fading channels model [29], and OP of RF EH cooperative communication systems over Nakagami-m fading channels [30].…”