Michael S Newell

US Patent:

20050100107, May 12, 2005

Filed:

Nov 12, 2003

Appl. No.:

10/706405

Inventors:

Thomas Head - Great Meadows NJ, US
Kaushal Dhar - Hackettstown NJ, US
Munawar Kermalli - Floral Park NY, US
Michael Newell - Hackettstown NJ, US

International Classification:

H04K001/10

US Classification:

375260000

Abstract:

A method for reducing the PAR of a composite carrier includes obtaining the in-phase and quadrature components for each of the carriers in the composite carrier, computing vector magnitudes corresponding to each carrier, then adding the vector magnitudes and comparing the resulting sum to a threshold. If the sum exceeds the threshold, at least of the one of the carriers are attenuated, thereby reducing the PAR of the composite carrier. In one embodiment, only the carrier or carriers having significantly larger vectors are attenuated. The pre-calculation and the subsequent attenuation process allows the composite carrier PAR to be reduced to avoid peak regrowth when the carriers are ultimately combined and transmitted.