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ML Timing Estimation for Generalized UWB-IR Energy Detection Receivers

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Executive Summary

Timing estimation of the receive pulse is a crucial component for communication systems as well as localization with ultra wideband impulse radio. Standard timing estimation algorithms might not be applicable due to stringent requirements on complexity and power consumption of the receiver. Therefore, the authors consider maximum likelihood timing estimation at the output of a generalized energy detection receiver that consists of a squaring device followed by an arbitrary post-detection filter and low rate sampler. Moreover, they assume only the statistics of the channel to be known at the receiver. To the best of their knowledge, this problem has not been treated so far in this generalized set up. Known approaches for specific post-detection filters rely on a Gaussian approximation of the detector output.

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