Original scientific paper

Analytical performance evaluation of time-hopping Pulse Position Amplitude Modulation IR-UWB systems under multi user interference

Marijan Herceg ; Faculty of Electrical Engineering, J. J. Strossmayer University of Osijek, Kneza Trpimira 2B, HR-31000 Osijek, Croatia
Ratko Grbić ; Faculty of Electrical Engineering, J. J. Strossmayer University of Osijek, Kneza Trpimira 2B, HR-31000 Osijek, Croatia
Tomislav Švedek ; Faculty of Electrical Engineering, J. J. Strossmayer University of Osijek, Kneza Trpimira 2B, HR-31000 Osijek, Croatia

Abstract

In this paper, the characteristic function (CF) method is used to derive symbol error rate (SER) expression for time-hopping impulse radio ultra–wideband (TH-IR-UWB) systems with Pulse Position Amplitude Modulation (PPAM) scheme in the presence of multi-user interference (MUI). The derived expression is validated with Monte-Carlo simulation and compared with orthogonal Pulse Position Modulation (PPM). Moreover, the analytical results are compared with Gaussian approximation (GA) of MUI which is shown to be inaccurate for medium and large signal-to-noise ratio (SNR). It is also shown that PPAM scheme outperforms PPM scheme for all SNR. At the end the influence of different system parameters on the PPAM performance is analyzed.

Keywords

characteristic function; multi-user interference; Pulse Position Amplitude Modulation; symbol error rate; ultra-wideband

Hrčak ID:

71810

URI

https://hrcak.srce.hr/71810

Publication date:

26.9.2011.

Article data in other languages: croatian

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