Ultra wideband communication system, method, and device with...

Details Ultra wideband communication system, method, and device with... Ultra wideband communication system, method, and device with...

2008-07-01

2008-07-01

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Transmitters

C375S130000

Reexamination Certificate

active

10705120

ABSTRACT:
An ultra-wide band (UWB) waveform generator and encoder are provided. The encoder multiplies each data bit by an n-bit identifying code to create a stream of bits corresponding to each data bit, i.e., an original codeword. The original codeword is passed to the UWB waveform generator for generation of a UWB waveform comprised of shaped wavelets that can be transmitted via an antenna. The UWB waveform generator may use a two-stage differential mixer. A first stage combines pulses from a pulse generator with a first derivative codeword derived from the original codeword. The wavelet output from the first stage is input to a second differential mixer along with a second derivative codeword also derived from the original codeword and orthogonal to the first derivative codeword. The wavelet output from the second mixer represents an inversion of the original codeword, and is passed to an inverting amplifier before being transmitted.

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Richard Comerford, “Handhelds Duke It Out For The Internet”, pp. 35-41, Aug. 2000.

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