Non-band-limited Signal Sampling Technology And Its Application In Uwb Communication

The main objective of the thesis is to research the sampling method for non-bandlimited signals.According to Shannon sampling theorem, however, sampling rate should not be smaller than Nyquist rate in order to reconstruct the signal accurately, which means that Ultra-WideBand signals have to be sampled at a quite high sampling rate and non-bandlimited signals can not be reconstructed exactly.This thesis detailedly introduces the method of the finite rate of innovation that can sample and reconstruct non-bandlimited signals and some crucial technologies of Ultra Wide-Band communication.In addition,the thesis integrates non-bandlimited signals with UWB transmission system and investigates non-bandlimited signals how to be transmited in the super broad band's channel.Because UWB signals are super broad band signals and Diracs and the correlative signals we transmit even accord with modulating rquomodo of UWB system, which is to directly modulate the super short-time pulses.In the end,the thesis simulates the signals at different stages of the transmission system with Matlab software.The simulation results show that sampling with finite rate of innovation is effective for the sampling of non-bandlimited signals and non-bandlimited signals can be well transmited in the UWB system.