This article proposes a Joint Low Complexity Regularized Zero Forcing-Wavelet Domain Equalizer (JLCRLZF-WDE) as substitute to a Frequency Domain Equalizer (FDE) for improving the Multiple-Input-Multiple-Output (MIMO) DWT-OFDM. The results have been assessed using the Co-Carrier Frequency Offset (Co-CFO) Rayleigh fading channel.