Comparison of UWB auto-correlation and transmitted reference schemes

This paper provides a theoretical comparison of different multi-pulse schemes for ultra-wideband (UWB) transmitted reference (TR) which utilizes correlation based receivers. The performance comparison is based on a simplified analysis of signal-to-noise ratio (SNR) derivations of receiver output for different signal repetition structures using binary pulse position modulation (BPPM) and binary pulse amplitude modulation (BPAM). The results shows that the best solution is based on pair-wise combination of pulses for which succeeding pulses form the reference for subsequent pulses, significantly outperforms other schemes. The results also show that pulse repetition scheme with equal power pulses in a doublet structure does not provide a good solution from the perspective of SNR degradation.