On the modulation options for UWB systems

In this paper, various modulation options for ultra-wideband (UWB) systems are reviewed in terms of their bit error rate (BER) performances, spectral characteristics, modem/hardware complexities, and data rates. The performances of different modulation schemes under practical conditions such as multipath, multiple-access interference (MAI), narrowband interference (NBl), and timing jitter are analyzed and evaluated through computer simulations.