Journal
IEEE TRANSACTIONS ON COMMUNICATIONS
Volume 55, Issue 2, Pages 313-322Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCOMM.2006.887493
Keywords
hermite functions; orthogonal functions; orthogonal modulation; pulse-shape modulation (PSM); pulse shaping; spectral compliance; ultra-wide bandwidth (UWB); wireless
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In this paper, we present a method to obtain a set of orthogonal pulses to be used in pulse-shape modulation (PSM) for ultra-wideband communications. The pulses are built as linear combinations of Hermite functions, which are shown to have unique advantageous features. Mathematical restrictions of orthogonality and spectral efficiency are introduced as guidelines to a fully explained search procedure to find the best set of pulses. Additionally, this procedure is adapted and used to find a single FCC-compliant pulse shape. A quaternary PSM scheme is implemented with orthogonal pulses obtained by the proposed method, and the results of a simulation are shown.
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