Patent ID: 7505506
Filing Date: 2009-03-17
Classification: H04L

Abstract:
1. A method implemented in a system for generating a composite signal comprising the steps of: (a) generating a plurality of sub-carriers, each sub-carrier having a different frequency position in a frequency spectrum; (b) generating a plurality of codes; (c) forming a plurality of code combinations from the plurality of codes generated in step (b), wherein a code combination is comprised of at least two codes from the plurality of codes; (d) first modulating each sub-carrier using a respective one of the code combinations formed in step (c) to form a plurality of modulated sub-carriers; and (e) second modulating in-phase and quadrature components of a base carrier using the plurality of modulated sub-carriers to form the composite signal having multiple carriers; step (c) includes forming the following code combinations: CC