System and method for shaping ultra wide bandwidth signal...

Details System and method for shaping ultra wide bandwidth signal... System and method for shaping ultra wide bandwidth signal...

2008-01-29

2008-01-29

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C370S319000

Reexamination Certificate

active

10602743

ABSTRACT:
A method and system shapes a spectrum of an impulse radio signal, such as an UWB signal. First, basis pulses at various frequencies and pseudo-random delays are generated. The generated set of basis pulses are then weighted and delayed, and combined linearly to conform the spectrum of the transmitted basis pulses to a spectral mask. The spectral mask can be predetermined, or the conforming can be adaptive. Furthermore, the basis pulses can be frequency-shifted before the combining.

REFERENCES:
patent: 5742814 (1998-04-01), Balasa et al.
patent: 2002/0034191 (2002-03-01), Shattil
Adams (Quadratic Programming Approaches to New Problems in Digital filter design Conference Record. Twenty Fourth Asilomar Conference on Signals, Systems and Computers Maple Press, San Jose, CA, USA, 1, 307-310, 1990).
Sartori et al ( Neural Network Training Via Quadratic Optimization, ircuit and Systems, 1992 ISCAS ′92 Proceedins , 1992 International Symposium).

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