Patent ID: 9515698
Filing Date: 2016-12-06
CPC Classification: H03F,H04B,H04L

Claim Text:
1. A method for modulating a digital signal for transmission, comprising: generating a plurality of tones, each tone being centered at a different frequency, generating at least second and third order intermodulation terms by driving the plurality of tones through a power amplifier at a power level that drives the power amplifier into saturation, said tones and said second and third order intermodulation terms being the elements of a frequency position modulation constellation having a plurality of symbols, each symbol comprising said tones and said second and third order intermodulation terms, such that the positions of each of the tones and their associated second and third order intermodulation terms form the symbols of the constellation, with a Hamming distance across the frequency position modulation constellation being greater than the number of tones.