Patent ID: 7813433

Claim:
A device for communicating data, comprising: a modulation and mapping circuit that modulates and maps data symbols into a plurality of multiple subcarrier frequencies that are orthogonal to each other to form an Orthogonal Frequency Division Multiplexed (OFDM) communications signal based on a fixed or variable OFDM symbol rate; and a pseudo-random signal generator operative with the modulation and mapping circuit for generating pseudo-random signals to the modulation and mapping circuit using 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 is frequency hopped 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 selected subcarriers are turned ON or OFF pseudo-randomly to increase transmit power and signal-to-noise ratio and reduce any Intercarrier Interference (ICI) and adverse effects of Frequency Selective Fading.