Patent ID: 6763057
Filing Date: 2004-07-13
Classification: H04B,H04L

Abstract:
A method of communicating information in an RF signal emitted by an ultra wideband impulse radio transmitter comprising the steps of:a. separating the information into an information component signal containing data bits; b. generating in the transmitter a sequence of ultra wideband RF pulses, each RF pulse characterized by a waveform defining a wave shape and a pulse cycle; c. modulating a time position of the RF pulses in response to a channelization component signal and in response to the value of the data bits in the information component signal, wherein the time position of each modulated RF pulse can define one of at least two separated modulation states such that each pulse can communicate at least two of the data bits, and wherein the step of modulating the time position of the RF pulses in response to the information component signal includes varying the time positions of the pulses at time delay offset points along a total modulation of greater than one-quarter of the pulse cycle; and d. transmitting the modulated RF pulses to an ultra wideband impulse radio receiver; and e. demodulating the modulated RF pulses in the receiver to extract the information from the data bits communicated by each pulse.