The Simulation Study of Multi-User Spread-Spectrum Wireless Communication System
Ling Zhang · Journal of Physics Conference Series · 2021
Abstract Spread-spectrum technology is a promising and effective is an effective technique using for multiple accessing, combating multi-user interference and rejecting unwanted radio jamming. In this paper, we explore the effect of Direct Sequence spread-spectrum (DSSS) which base on π/4-DPSK modulation and demodulation technique, we provide a multi-user spread-spectrum wireless communication system and the system performance was studied from simulation and comparison. Four users information are transmitting over Rayleigh fading channel to model the 5G communication environments. The performances of the system are expressed through comparisons of the bit-error rate (BER) and signal to noise ratio (SNR) for both original signals at transmitter and recovered signals at receiver. From the contrast results, the anti-multi-user interference ability of the system is provided.