Patent ID: 7787513

Claim:
An apparatus, comprising a spread spectrum transmitter including: a comb generator, wherein the comb generator is operable to generate a plurality of harmonics; a summing node coupled to the comb generator; a modulator coupled to the summing node and operable to modulate a first one or more of the plurality of harmonics such that a transmitted signal substantially conforms to a first PSD profile during a first time period and modulate a second one or more of the plurality of harmonics such that a transmitted signal substantially conforms to a second PSD profile in a second time period, wherein the PSD of the transmitted signal during the first time period is the result of the modulation of the first one or more of the plurality of harmonics and the PSD of the transmitted signal during the second time period is the result of the modulation of the second one or more of the plurality of harmonics, the first one or more of the plurality of harmonics is determined based on the first PSD profile, the second one or more of the plurality of harmonics is determined based on the second PSD profile and the first one or more of the plurality of harmonics is different than the second one or more of the plurality of harmonics; a spread spectrum signal output coupled to the modulator; a data encoder coupled to the modulator; a data input coupled to the data encoder; a code source coupled to the data encoder; and a clock coupled to both the data encoder and the comb generator, such that both the data encoder and the comb generator share a common frequency reference.