Multistage MMSE-DFD Receiver for Ultra-Wide Bandwidth Impulse Radio

Abstract

An adaptive minimum mean-square error (MMSE) receiver is developed based on the multistage matrix Wiener filter decision feedback detection (MMWF-DFD) scheme for ultra-wideband time-hopping impulse radio in multipath fading channels. The feedforward and feedback filters of the MMWF-DFD receiver are capable of sharing the same calculation basis to alleviate the computational complexity without compromising system performance. Simulation results show that the reduced-rank MMWF-DFD receiver is able to provide similar performance level in demodulation to that of the full-rank MMSE-DFD receiver, but requires much less computational complexity