Abstract :
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.
Keywords :
antenna arrays; antenna radiation patterns; broadband networks; diversity reception; electromagnetic coupling; fading channels; probability; radio links; radio networks; FCC; UWB communications; UWB radio link; UWB signals diversity; antenna arrays; copolarized radiation patterns; electromagnetic coupling; fading mitigation; fading signal probability distributions; frequency mode UWB modulation; indoor communications; link budget; pulsed mode UWB; sensors; simulations; spatial diversity; test array; ultra wide band communications;
