Spatial diversity for UWB communications

Spatial diversity is regarded as a possible mean to relax the stringent constraints imposed by regulations on link budget for ultra wide band (UWB) communications. After general considerations on the pertinence of diversity for UWB signals, it is shown here by simulations on a test array, that electromagnetic coupling between sensors should be negligible, allowing one to use diversity for improved energy capture. In addition, the computation of fading signal probability distributions shows a good hope of fading mitigation by spatial diversity, in the case of a frequency mode UWB modulation.