Innovative use of the kalman filter in reception matrices for perfoming an improved estimation of telecommunication signals

A radio communications method including carrying out, by a transmitter, transmission operations that comprise:

• generating digital transmission signals carrying symbols to be transmitted and having a predefined time length, wherein the generated digital transmission signals carry:
• first symbols via a first phase, or amplitude and phase, digital modulation related to an Orbital Angular Momentum mode with topological charge equal to zero;
• and
• second symbols via a second phase, or amplitude and phase, digital modulation related to one or more Orbital Angular Momentum modes with topological charge different than zero;
• and
• transmitting a radio frequency signal carrying, in successive, non-overlapped time frames or slots having the predefined time length, the digital transmission signals generated;
• the radio communications method further including carrying out, by a receiver, reception operations that comprise:
• receiving the radio frequency signal transmitted by the transmitter;
• processing the received radio frequency signal so as to obtain a corresponding digital incoming signal;
• applying an oversampling operation to the digital incoming signal thereby obtaining an oversampled digital incoming signal;
• detecting successive, non-overlapped time frames/slots with the predefined time length in the oversampled digital incoming signal;
• and,
• for each detected time frame/slot, estimating respective symbols carried by the oversampled digital incoming signal in said time frame/slot by using a predefined reception matrix incorporating a predefined Kalman filter.