Method to provide increased robustness against noise and interference in wireless communications, a transmitter and computer program products thereof

Abstract

A method to provide robustness against noise and interference in wireless communications, a transmitter and computer program products, involving sending to a receiver (), through a wireless channel (), information using a constant-envelope waveform with complex baseband representation of the form s[n]=Aexp{jϕ[n]}. The phase ϕ[n] following the expression and the wireless channel has an Additive White Gaussian Noise component and flat-fading conditions, wherein the transmitter () calculates a FFT length, N, and a number of active positive subcarriers, N, needed in order to have a given improvement in the signal to noise ratio at the active positive subcarriers of the instantaneous frequency spectrum containing the information; calculates a cutoff subcarrier kneeded to overcome Doppler, phase noise and carrier frequency offset impairments at the receiver side, and generates a complex baseband signal waveform of the form s[n]=Aexp{jϕ[n]} carrying information with the FFT length, number of active positive subcarriers and cutoff subcarrier.