Patent ID: 7554965
Filing Date: 2009-06-30
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A piconet that employs PN (Pseudo-Noise) codes to spread UWB (Ultra Wide Band) pulses to minimize narrowband interference, the piconet comprising: a PNC (piconet coordinator); and a plurality of DEVs (user piconet devices); and wherein: two devices selected from the plurality of DEVs and the PNC communicate with one another using UWB pulses transmitted across a communication link; based on narrowband interference within a spectrum of the UWB pulses that are transmitted across the communication link, the PNC assigns a PN code from a plurality of PN codes to spread the UWB pulses transmitted across the communication link; the assigned PN code has at least one narrowband blocking interval, composed of at least one zero in the assigned PN code, that nulls at least one portion of the spectrum of the UWB pulses around which the narrowband interference is centered thereby eliminating the narrowband interference; and when transmitting a UWB pulse across the communication link, at least one of the two devices spreads the UWB pulse using the PN code that is assigned from the plurality of PN codes.