Improved QPSK modem communication performance for acoustic signals using adaptive digital equalizers
DOI:
https://doi.org/10.37868/sei.v7i1.id426Abstract
Transmission reliability in voice communications is an important challenge due to various effects such as multipath propagation, rapid channel changes, and Doppler shift. In this study, QPSK modulation is combined with the transmitter channel equalizer in the receiver part as well as in the transmitter, where a unit for suppressing audio interference and distortions is developed to reduce the effects of the transmitter channel on the waves transmitted through it. An in-depth analysis of the improved digital equalizer device is discussed by comparing different results obtained by varying the design parameters. An optimized digital channel equalization unit is selected from the simulation results, which is used to create a multimedia wireless audio communication system. Better BER performance is expected at the minimum signal-to-noise ratio (SNR) required at the detector input.
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Copyright (c) 2024 Nada Sharis
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