In order to guarantee reliability and clarity of the signal, the communication devices make use of specialized modulation techniques such as OFDM and QAM. Also, error correction codes, antenna gain and polarization, as well as adaptive equalization features are integrated. The boost of signal strength and reduction of distortion is accomplished by improved interference cancellation. Essential testing methods such as BER and SNR measurement tests claim performance within critical requirements which maintain consistency for voice, video, and data intensive situations.