Time and distance dependent DS-SS UWB channel modelling: BER and per evaluation

The low cost of devices and the possibility of achieving higher data rates without increasing transmitter power make Ultra-Wideband (UWB) radio a viable candidate for short-range multiple access communications in dense multipath environments. This paper analyses the efficiency of the Direct Sequence - Spread Spectrum (DS-SS) physical layer standard proposal in an indoor environment with fixed transmitters and receiver positions. The modelling and the performance evaluation of a new channel model, where impulse response is also distance-dependent, are outlined. Moreover, the performance evaluation of an ideal Minimum Mean Square Error (MMSE) receiver is exploited in terms of distance, noise and data rates dependence. Packet Error Rate (PER) analysis has been carried out by using a polynomial regression technique, through the Matlab tool, on simulation results. Simulation results are evaluated in terms of Bit Error Rate (BER) and PER vs. transmitter-receiver distance. © 2006 IEEE.