A new approach to investigation of discrete wavelet-based multiuser MIMO-OFDM for BPSK modulation scheme

Abstract

This paper investigates the approach of discrete wavelet to multiuser (MU) MIMO-OFDM systems and further makes a comparison with the conventional Fast Fourier Transform (FFT) founded MU-MIMO-OFDM. Discrete wavelet-based system is found superior in performance over the FFT based one, where the requirement of cyclic prefix has been eliminated making flexible with greatest selection. The concept of discrete wavelets is a best fit in all the areas of Wi-Fi verbal schemes with OFDM, which is an enduring application for subsequent users. Simulations were created for the double multicarrier schemes. Haar wavelet has been utilized in this paper since it shaded out the performance of its counterparts like Daubechies and Symlet. The proposed wavelet-based scheme superseded the conventional-based system in terms of Bit Error Rate (BER) taking a couple of antennas by means of BPSK and QPSK as dual modulation schemes over the Additive White Gaussian Noise (AWGN) Channel.