Patent ID: 7515627
Filing Date: 2009-04-07
Classification: H04B,H04L

Abstract:
1. An ultra-wideband (UWB) transmitter to transmit an information bit stream, comprising: one or more modulation sections to provide one or more modulation functions to modulate the information bit stream; a waveform generator including a plurality of voltage-controlled oscillators (VCOs) respectively corresponding to a plurality of base frequency bands; a space-time-frequency mapping table that includes information corresponding to relationships among the modulation functions, the plurality of base frequency bands, and time; and means, responsive to the information stored in the table, to determine a modulation function from one or more modulation functions and a sequence for the plurality of base frequency bands, to control the waveform generator to generate a carrier wave using one of the plurality of base frequency bands based on the sequence, and to control the modulation sections to modulate the information bit stream based on the modulation function and the carrier wave and to generate one or more modulated signal streams.