Performance Analysis of Ultra Wideband Communication System with Time-Hopping M-ary Biorthogonal Pulse Position Modulation

The system performance is analyzed using a new modulation scheme called time-hopping (TH) M-ary biorthogonal pulse position modulation (MBPPM) for ultra wideband (UWB) systems with asynchronous multiple-access interference (MAI). Closed-form expressions of symbol error rate (SER) and channel capacity are provided in an additive white Gaussian noise (AWGN) channel, then the simple expressions are obtained for the system. The performances of TH MBPPM and M-ary orthogonal PPM (MOPPM) schemes are compared in terms of the SER in the end. It is shown that the larger M leads to lower system SER and higher channel capacity for MBPPM system. Also, the TH MBPPM outperforms the TH MOPPM system and half the system complexity for the same values of signal-to-noise ratio (SNR).