Abstract
Multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) techniques are applied to multiband ultrawideband (UWB) systems to obtain high rate communications over indoor wireless channels. In this paper, we setup a general scenario to investigate the performance of MIMO-OFDM multiband UWB systems without specific coding schemes. We also derive a lower bound of pairwise-error probability (PEP) of an (KN <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">t</sub> N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> L) system (K bandhopping, N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">t</sub> transmit antennas, N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> receive antennas and L paths combined) in case of lognormal fading channel.
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