A Reconfigurable Digital Receiver for Transmitted Reference Pulse Cluster UWB Communications

The transmitted reference pulse cluster (TRPC) structure for ultrawide bandwidth communications contains compactly spaced reference and data pulses and enables the use of a robust autocorrelation detector at the receiver. Since the digital receiver not only can avoid the problems caused by using the analog autocorrelation but can provide flexibility in its signal processing at the expense of high sampling rate of an analog-to-digital converter (ADC) as well, we consider the digital architecture for the recently proposed TRPC signaling scheme and propose a reconfigurable TRPC (rec-TRPC) receiver. The received signal-to-noise ratio (SNR) can be maximized in the new designed receiver by using the optimum number of delay line (DL) branches. The performance of the rec-TRPC receiver is analyzed, and our semi-analytical and simulation results show that the rec-TRPC receiver structure achieves up to a 2-dB power gain over the original TRPC receiver. Furthermore, the complexity of the rec-TRPC receiver is investigated from an implementation viewpoint and compared with the digital implementation of the original TRPC receiver.