Phase continuity in narrow-band transmission within a frequency-domain multiple-access communication system

A method for communication, comprising:

• in a transmitter, generating a signal comprising multiple Orthogonal Frequency-Division Multiplexing (OFDM) sub-carriers in a given symbol time interval, for transmission to a receiver that down-converts a predefined system bandwidth using a receiver center frequency, wherein the signal occupies a frequency sub-band assigned to the transmitter within the predefined system bandwidth and transmitted using a selected transmitter carrier frequency within the frequency sub-band;
• calculating in the transmitter, based on the transmitter carrier frequency and the receiver center frequency, a phase compensation that compensates for phase discontinuities caused to the signal due to a frequency difference between the transmitter carrier frequency and the receiver center frequency, by calculating a same phase shift to all the OFDM sub-carriers in the given symbol time interval depending on a duration of a cyclic prefix attached to the OFDM symbol;
• applying the calculated phase compensation to the signal by applying the same phase shift to all the OFDM sub-carriers in the given symbol time interval, in the transmitter, for producing a phase-compensated signal, using a phase compensator of the transmitter;
• and
• transmitting, using a transmitter front-end circuitry, the phase-compensated signal over the frequency sub-band from the transmitter to the receiver.