Theoretical boundaries for combined information estimation and non data-aided channel estimation in UWB

One of the main advantages of ultra wide band (UWB) systems is the extreme time resolution due to the huge bandwidth of several GHz. This allows the distinction between many different propagation paths in multipath environments and thus transmits with very low power. In order to benefit from the advantages of UWB, accurate estimations of the current channel realization are necessary. We derive theoretical boundaries for pulse transmission for the expected BER, the accuracy of the channel estimation and the interaction between these two problems. As an example, the popular time-hopping pulse-position-modulation UWB (TH-PPM UWB) is used to show the trade-off between information and channel estimation.