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09-05-2020 | Issue 6/2020

Wireless Networks 6/2020

Performance analysis of coherent BPSK-OCDMA wireless communication system

Journal:
Wireless Networks > Issue 6/2020
Authors:
M. A. Morsy, Abdulaziz S. Alsayyari
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Abstract

In this paper, the design analysis and construction of the Optical Wireless Communication (OWC) system are presented based on a new spreading code sequence. This new code is called Double Length Modified Prime Code (DL-MPC), which is designed to enhance the system security and achieves better Bit Error Rate (BER) performance. Additionally, the Binary Phase Shift Keying (BPSK) coherent homodyne Optical Code Division Multiple Access (OCDMA) transceiver is utilized based on the proposed code to improve the system performance. In the coherent homodyne system, the Mach–Zehnder Interferometer (MZI) is used as a phase modulator/demodulator. As well in this study, the proposed code construction and correlation characteristics have been investigated. Moreover, the OWC channel model is illustrated and further analyzed. The analysis and evaluation of overall system BER performance and throughput have been presented considering the effect of the Multi-User Interference (MUI) as a source of noise. Finally, the results indicated that the coherent homodyne OCDMA transceiver based on the DL-MPC outperforms the same system based on the popular codes concerning the system BER performance and system throughput.

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