Low-sampling rate UWB channel characterization and synchronization

Irena Maravic, Julius Kusuma, Martin Vetterli
2003 Journal of Communications and Networks  
We consider the problem of low-sampling rate high-resolution channel estimation and timing for digital ultra-wideband (UWB) receivers. We extend some of our recent results in sampling of certain classes of parametric nonbandlimited signals and develop a frequency domain method for channel estimation and synchronization in ultra-wideband systems, which uses sub-Nyquist uniform sampling and wellstudied computational procedures. In particular, the proposed method can be used for identification of
more » ... identification of more realistic channel models, where different propagation paths undergo different frequency-selective fading. Moreover, we show that it is possible to obtain high-resolution estimates of all relevant channel parameters by sampling a received signal below the traditional Nyquist rate. Our approach leads to faster acquisition compared to current digital solutions, allows for slower A/D converters, and potentially reduces power consumption of digital UWB receivers significantly.
doi:10.1109/jcn.2003.6596614 fatcat:hg2tmcutafb2pj3ajlanukc4iy