Patent ID: 9455763
Filing Date: 2016-09-27
CPC Classification: H04B,H04J,H04L

Claim Text:
1. A method of mitigating interference by narrow band interference (NBI) signals in ultra wide band (UWB) systems, the method comprising: mitigating multiuser interference from narrowband interferers operating in a range of 2-11 GHz, wherein at least one multiuser interference interferes with a trained UWB system that uses pilot symbol assisted modulation; passing a received UWB signal through a band pass filter (BPF), wherein the BPF is located at a UWB receiver and the received UWB signal is a Hanning modulated pulse centered at 4 GHz frequency; measuring a plurality of test functions to determine frequencies of the NBI signals in the received UWB signal; determining a number of active users; notch filtering the NBI signals, based on the determined frequencies of the NBI signals and the determined number of active users; passing the notch filtered NBI signals through a quadratic programming algorithm, wherein the quadratic programming algorithm performs joint decoding; estimating an arrival of a UWB payload; and demodulating the UWB payload, based on the estimated arrival of the UWB payload.