The present invention provides a frequency-diverse single-carrier modulation
scheme that extends the usable SNR range of severely distorted channels. This scheme
is advantageous for applications in which when the SNR is low and the transmitted
spectrum contains unusable regions (e.g., spectral nulls due to radio-frequency
interference ingress or egress). In one embodiment, the symbol baud rate is selected
in order that unusable portions of the frequency response of the transmission channel
are mapped onto usable portions of the frequency response of the transmission channel.
