Title: Dual hop relaying using CDMA and reconfigurable intelligent surfaces (RIS)

Authors: Sami Touati; Rachid Sammouda; Musaed Alhussein

Addresses: Sat. Tech Co. R&D, Paris, France ' Department of Computer Sciences, College of Computer and Information Sciences, King Saud University, Saudi Arabia ' Department of Computer Engineering, College of Computer and Information Sciences, King Saud University, Saudi Arabia

Abstract: In this paper, we suggest the use of reconfigurable intelligent surfaces (RIS) in dual hop relaying. There are two hops, the first one uses code division multiple access (CDMA) and the second one uses RIS as transmitter or reflector. We show that the incorporation of RIS allows to increase the throughput of conventional CDMA systems. The throughput of dual hop relaying using a combination of CDMA and RIS is larger than that of dual hop relaying based entirely on CDMA.

Keywords: CDMA; code division multiple access; RIS; reconfigurable intelligent surfaces; throughput analysis; BEP; block error probability; Rayleigh channels; CFAR detection; multi antennas systems; multipath propagation; 6G.

DOI: 10.1504/IJSNET.2021.115887

International Journal of Sensor Networks, 2021 Vol.36 No.2, pp.79 - 84

Received: 13 Jul 2020
Accepted: 30 Jul 2020
Published online: 05 Jul 2021 *

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