Patent ID: 6694104
Filing Date: 2004-02-17
Classification: H04B,H04L

Abstract:
A method of performing variable-bit-rate communications, the method comprising:a) providing a variable-bit-rate transmitter having a modulator and a net transfer function; b) generating digital data with the modulator of the transmitter at a first bit rate, the digital data comprising a sequence of signaling waveforms having a first duty cycle, each signaling waveform having a predetermined shape; c) generating digital data with the modulator of the transmitter at a second bit rate, the digital data comprising a sequence of signaling waveforms having a second duty cycle, each signaling waveform having the predetermined shape, wherein the first duty cycle and the second duty cycle differ and wherein amplitude of signaling waveforms varies as a function of duty cycle; and d) receiving the digital data generated at the first or the second bit rates with a variable-bit-rate receiver.