Marco Pausini

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—A discrete-time equivalent system model is derived for differential and transmitted reference (TR) ultra-wideband (UWB) impulse radio (IR) systems, operating under heavy in-tersymbol-interference (ISI) caused by multipath propagation. In the systems discussed, data is transmitted using differential modulation on a frame-level, i.e., among UWB pulses.(More)
In this paper we propose two innovative detection schemes for IR-UWB communication systems based on the autocorrelation receiver and differential detection. The proposed solutions overcome the implementation complexity required for a reliable detection of the transmitted data, by employing one or two limiters in the receiver branches that avoid the need for(More)
—The autocorrelation receiver (AcR) is a subop-timum, low-complexity receiver architecture particularly suited to ultra-wideband (UWB) communication systems. As the bit rate increases, interference among pulses due to multipath propagation causes serious impairments of the AcR's performance. To mitigate this effect, we propose an appropriate design of the(More)
— This paper shows equalization approaches for high-data-rate transmitted-reference (TR) IR-UWB systems employing an autocorrelation receiver front-end. Using a maximum likelihood sequence detector (MLSD) with decision feedback (in the back-end of the TR-receiver), a significant improvement of the receiver performance is possible. To avoid the high(More)
— This paper presents a new uplink beamforming technique applied to the WCDMA system, here called partial-adaptive beamforming. Instead of concentrating upon the performance of every single user, the radiation pattern aims to maximize the performance of a group of users and only a limited number of beams has to be formed. We present two algorithms that(More)