ROBUST COMMUNICATION STRATEGY FOR OVERCOMING NARROWBAND JAMMING IN LOW-FREQUENCY CDMA-DSSS SYSTEM USING MATLAB

Tanajit Manna, Arabinda Das, Bidrohi Bhattacharjee, Shibabrata Mukherjee

DOI Number
https://doi.org/10.2298/FUEE2403531M
First page
531
Last page
540

Abstract


This work presents a method for efficient communication in the case of a Direct Sequence Spread Spectrum (DSSS) single user system to reduce jamming under restricted band in Code Division Multiple Access (CDMA) systems. Improvement-based, narrowband-frequency communication is in significant demand in the security sector. The research presents an experimental and analytical comparison of the Power Spectral Density (PSD) of CDMA under narrowband frequency with and without jamming situation. An optimal system is shown, backed by the Bit Error Rate (BER) and Signal to Noise Ratio (Eb/N) curve, by varying the signal power and Barker code.We can obtain both jamming-free PSD and low narrowband jamming through experimental variations in signal power. Barker Code-supported variations in the spreading factor show the benefits of the system's optimised model in the case of narrow band jamming. The coding-based MATLAB® platform is used to implement the aforementioned novel approach for the CDMA-DSSS system design, modeling, and performance analysis.


Keywords

CDMA, DSSS, PSD, BER, MATLAB

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References


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