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This paper describes a technique to improve the spectral efficiency and increase the energy in the transmitted pulse of an impulse-radio, ultra-wideband (IR-UWB) transmitter utilizing bi-phase shift keying (BPSK) modulation and working in the frequency range of 3.1–10.6 GHz. Two Gaussian bi-phase pulses are produced and form the base-band signal. These two signals are delayed with respect to each...
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