Tehnički vjesnik, Vol. 18 No. 3, 2011.
Izvorni znanstveni članak
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
Sažetak
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.
Ključne riječi
characteristic function; multi-user interference; Pulse Position Amplitude Modulation; symbol error rate; ultra-wideband
Hrčak ID:
71810
URI
Datum izdavanja:
26.9.2011.
Posjeta: 1.680 *