Performance analysis of transmitted-reference UWB systems with narrowband interference suppression

摘要

In this paper, we propose a receiver structure for transmitted-reference ultra-wideband (TR-UWB) systems with both narrowband interference (NBI) and inter-pulse interference (IPI) mitigation capabilities. The effects of additive white Gaussian noise (AWGN) and the IEEE 802.15.4a fading channel are also taken into consideration. We adopt band-stop filtering to suppress the NBI. For IPI, it is statistically removed by a sum-and-average process. Theoretical analysis is carried out to study the lower bound of the bit-error rate (BER) performance of the proposed receiver. Numerical results show that the proposed receiver is able to provide satisfactory performance and is robust to variations in the system design parameters. It is also observed that the proposed receiver is able to deliver good performance even when there is zero delay between the reference and data pulses, which can effectively double the system throughput.