A device for communicating data, comprising: a modulation and mapping circuit configured to modulate and map data symbols into a plurality of multiple subcarrier frequencies that are orthogonal to each other to form an Orthogonal Frequency Division Multiplexed communications signal based on a fixed or variable OFDM symbol rate and comprising a modulator circuit, a circuit for inserting pilot and Peak-to-Average Power Ratio carriers, and a subcarrier mapping circuit for mapping carriers to an Inverse Fast Fourier Transform in a matrix operation; and a pseudo-random signal generator operative with the modulation and mapping circuit for generating pseudo-random signals to the modulation and mapping circuit based on an encryption algorithm for changing subcarrier constellation amplitude and phase values and frequency hopping each subcarrier at an OFDM symbol rate, such that each subcarrier at an OFDM symbol rate and subcarrier center frequencies are changed at OFDM symbol times using the same encryption algorithm used to change subcarrier constellation amplitude and phase values, wherein the pseudo-random signal generator is operative with the modulation and mapping circuit to turn ON or OFF selected subcarriers depending on the required data rate to be transmitted, wherein the pseudo-random signal generator further includes: a pseudo-random amplitude and phase generator configured for generating pseudo-random signals to the modulator circuit, a pseudo-random subcarrier location circuit operative with the modulation and mapping circuit, the pseudo-random amplitude and phase generator and the pseudo-random subcarrier location circuit being operative with an encryption algorithm, a cryptographic and key generator circuit and a master clock. a modulation and mapping circuit configured to modulate and map data symbols into a plurality of multiple subcarrier frequencies that are orthogonal to each other to form an Orthogonal Frequency Division Multiplexed communications signal based on a fixed or variable OFDM symbol rate and comprising a modulator circuit, a circuit for inserting pilot and Peak-to-Average Power Ratio carriers, and a subcarrier mapping circuit for mapping carriers to an Inverse Fast Fourier Transform in a matrix operation; and a pseudo-random signal generator operative with the modulation and mapping circuit for generating pseudo-random signals to the modulation and mapping circuit based on an encryption algorithm for changing subcarrier constellation amplitude and phase values and frequency hopping each subcarrier at an OFDM symbol rate, such that each subcarrier at an OFDM symbol rate and subcarrier center frequencies are changed at OFDM symbol times using the same encryption algorithm used to change subcarrier constellation amplitude and phase values, wherein the pseudo-random signal generator is operative with the modulation and mapping circuit to turn ON or OFF selected subcarriers depending on the required data rate to be transmitted, wherein the pseudo-random signal generator further includes: a pseudo-random amplitude and phase generator configured for generating pseudo-random signals to the modulator circuit, a pseudo-random subcarrier location circuit operative with the modulation and mapping circuit, the pseudo-random amplitude and phase generator and the pseudo-random subcarrier location circuit being operative with an encryption algorithm, a cryptographic and key generator circuit and a master clock. a pseudo-random amplitude and phase generator configured for generating pseudo-random signals to the modulator circuit, a pseudo-random subcarrier location circuit operative with the modulation and mapping circuit, the pseudo-random amplitude and phase generator and the pseudo-random subcarrier location circuit being operative with an encryption algorithm, a cryptographic and key generator circuit and a master clock.