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International Journal of Sensors, Wireless Communications and Control

Author(s): Faical Khennoufa* and Khelil Abdellatif

DOI: 10.2174/2210327913666230512102359

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BER Performance of Co-operative Relay NOMA-assisted PS Protocol with Imperfect SIC and CSI

Page: [99 - 107] Pages: 9

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Abstract

Objective: Wireless networks and devices are consuming a significant amount of energy as wireless communication is rapidly expanding, radio frequency (RF) energy harvesting has been envisioned as a feasible technology for powering low-power wireless systems.

Aims: This paper investigates a bit error rate (BER) of the non-orthogonal multiple access with cooperative relay-assisted power splitting (CR-NOMA-PS) based energy harvesting (EH).

Methods: We consider that the relay works in the decode and forward (DF) mode. For more practical scenarios, we consider the imperfect successive interference cancellation (SIC) and channel state information (CSI) are available.

Results: We obtain the end-to-end (e2e) BER expressions for the CR-NOMA-PS with imperfect CSI. Under different scenarios of PS, we evaluate and discuss the BER performance of the users with imperfect SIC and CSI. We validate the derivation of the BER expressions by simulation results.

Conclusion: The results indicated that the high values of the PS factor reduce the users' performance. Furthermore, in the high signal-to-noise ratio (SNR), the CSI error degrade BER performance and produced an error floor.

Keywords: BER, NOMA, SIC, CSI, devices, energy harvesting.

Graphical Abstract

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