Performance analysis of high rate weighted-TR UWB system in the presence of inter-block and multiuser interferences

Recently, a novel single-user weighted transmitted-reference (WTR) system has been proposed for high rate ultra-wideband (UWB) communications. The WTR system can achieve a superior performance in high data rates and is also robust to variations of both weight coefficient and integration interval. In this paper, a multi-access (MA) scheme is proposed for the WTR system and its performance assuming perfect power control at the receiver is evaluated over dense multipath channels at 114 Mbps in the presence of inter-block interference (IBI) for the first time. Closed-form representation of both synchronous and asynchronous MA scenarios are derived and validated by simulations, in the presence of noise and all interfering terms for the first time. Interfering terms are inter-path/pulse interference (IPaI/IPI), inter-symbol interference (ISI), and IBI. It is shown that the proposed MA scheme can significantly improve the system performance in multi-user scenario. Moreover, the single user performance of the WTR system is compared to those of a full-Rake receiver, conventional transmitted-reference (CTR), and differential transmitted-reference (DTR) through theoretical analysis and computer simulations by averaging over 100 realizations of IEEE 802.15.3a Channel Model 1 (CM1) including slow fading in the presence of noise and all aforementioned interfering terms.