Patent ID: 7864663
Filing Date: 2011-01-04
Classification: H04B,H04J

Abstract:
1. A method of communicating information using code division multiple access signals that occupy predetermined, non-contiguous regions of the electromagnetic spectrum, comprising the following steps: generating a non-contiguous spectrum having non-zero components in permitted regions of the electromagnetic spectrum and zero components in non-permitted regions of the electromagnetic spectrum; producing a non-contiguous spectrum spreading signal associated with the non-contiguous spectrum by performing a Discrete Fourier Transformation on the non-contiguous spectrum to produce a sequence of time waveform samples; processing the information into a stream of data symbols; combining the non-contiguous spectrum spreading signal and a data symbol from the stream to produce a data modulated signal, the combining including multiplying the data symbol with each sample of the sequence of time waveform samples; modulating the data modulated signal on to a carrier signal having a desired center frequency to produce a signal for transmission; and transmitting the transmission signal.