US 7,010,056 B1 · System and method for generating ultra wideband pulses

Abstract

An ultra-wide band (UWB) waveform generator and encoder for use in a UWB digital communication system. The UWB waveform is made up of a sequence of shaped wavelets. The waveform generator produces multi-amplitude, multi-phase wavelets that are time-constrained, zero mean, and can be orthogonal in phase, yet still have a −10 dB power spectral bandwidth that is larger than the frequency of the peak of the power spectrum In one embodiment, the wavelets are bi-phase wavelets. The encoder multiplies each data bit by an n-bit identifying code, (e.g., a user code), resulting in a group of wavelets corresponding to each data bit. The identifying codeword is passed onto the UWB waveform generator for generation of a UWB waveform that can be transmitted via an antenna.

Claims30

Dependent claims

A system for generating shaped ultra wideband wavelets, comprising:

a differential mixer having a first input, a second input and an output, said second input being a differential input having a first differential input and a second differential input, said first input being configured to receive non-return-to-zero data from a source;
and
a pulse generator configured to generate a pulse sequence having at least two pulses in a predetermined pattern, wherein
at least one of said at least two pulses being input to the first differential input, and another one of said at least two pulses being input to the second differential input, and
said differential mixer being configured to provide said shaped ultra wideband wavelets at said output of said differential mixer.

2 more elements

Dependencies are inferred from the claim text.

System and method for generating ultra wideband pulses

Life of this patent

System and method for generating ultra wideband pulses

Life of this patent

Abstract

Claims30