Patent ID: 7983217

Claim:
An apparatus comprising: a remote unit configured to transmit a signal including a first data signal, the first data signal being allocated to only a first set of a plurality of sets of non-overlapping orthogonal frequency division multiplexed (OFDM) discrete frequency tones in a first frequency band of a plurality of non-overlapping frequency bands of a channel coupled to the remote unit, and in a first set of time intervals, fewer than all time intervals, of a plurality of time intervals of a time division multiple access (TDMA) frame of the channel, wherein the remote unit comprises: an encoder configured to encode the first data signal; a tone mapping block configured to map the encoded first data signal to the first set of non-overlapping OFDM discrete frequency tones in a frequency domain signal; an inverse discrete Fourier transform block configured to transform the frequency domain signal into a digital time domain signal; a digital-to-analog converter configured to convert the digital time domain signal into an analog baseband signal; a radio frequency (RF) transmitter configured to convert the analog baseband signal into an RF signal; and an antenna configured to transmit the RF signal.