Revisiting TH-IR-UWB performance limits dependency on essential system parameters using the Generalized Gaussian Approximation

The huge potential of Ultra Wide Band Impulse Radio (UWB IR) with Multiple Access was initially evaluated using the Standard Gaussian Approximation (SGA) which assumed Multi-User Interference to be representable as classical Gaussian noise. Thus, under the reference scenario of free space propagation and perfect power control, closed form expressions allowed to express performance in function of the essential system parameters (number of users, impulse waveform, and number of slots per frame). However the derivations of the closed form expressions were based on the Standard Gaussian Approximation which has been proven later to be not valid. We propose here to revisit performance using the more accurate Generalized Gaussian Approximation (GGA).