Patent ID: 7436876
Filing Date: 2008-10-14
Classification: H04B,H04L

Abstract:
1. An ultra wideband receiver comprising: an ultra wideband antenna; an ultra wideband receiver coupled to the ultra wideband antenna for receiving an input signal, said ultra wideband receiver further comprising: a sampling stage for sampling the input signal and generating a sampled signal; a summation stage for summing a plurality of sampled signals and generating a sum signal; an evaluation stage for evaluating one or more sum signals to generate an evaluation result; a threshold comparator to compare the evaluation result with a threshold; wherein the threshold is varied based on a performance criterion, wherein the evaluation stage and threshold comparator utilize a plurality of ramps in accordance with one or more of the following relationships: wherein N represents the acquisition integration length, C is some programmable constant, and the performance criterion is described as the following: