Patent ID: 7860151

Claim:
A method of generating a multicarrier spread spectrum signal having a constant envelope, comprising the steps of: (a) partitioning multiple spreading codes into at least a first portion of spreading codes and a second portion of spreading codes; (b) forming first and second modulating signals, respectively, from the first and second portions of spreading codes; (c) modulating a first carrier spread spectrum signal with the first modulating signal to form a first modulated carrier signal; (d) modulating a second carrier spread spectrum signal with the second modulating signal to form a second modulated carrier signal; and (e) summing the first and second modulated carrier signals to form the multicarrier spread spectrum signal; wherein step (a) includes partitioning the multiple spreading codes into an odd number of spreading codes to form the first portion of spreading codes, partitioning the multiple spreading codes into another odd number of spreading codes to form the second portion of spreading codes, and forming a third portion of spreading codes, if other spreading codes are present in the multiple spreading codes that are not included in the first and second portions of spreading codes.