Methods and apparatus for offset chirp modulation

Details Methods and apparatus for offset chirp modulation Methods and apparatus for offset chirp modulation

2005-08-30

2005-08-30

Shingleton, Michael B (Department: 2817)

Modulators

Amplitude modulator

C332S157000, C332S151000, C375S300000

Reexamination Certificate

active

06937108

ABSTRACT:
A method and apparatus for producing a modulation scheme usable in conjunction with information transmission and reception via waveforms, such as electromagnetic waves. The modulation scheme is usable for such purposes as resolving range ambiguities and overcoming fading and interference problems via use of offset signals that vary in frequency over time (e.g., chirp signals), which spread the signal over a larger bandwidth. The method includes coding a symbol signal onto a split data stream containing a reference signal (e.g., a chirp), to which a time delay has been applied, then recombining the split streams to produce a composite waveform. The method can also include demodulating a composite received waveform by applying a reference signal to the waveform and then band pass filtering the waveform into discrete symbol data. Apparatus and systems are also provided for performing the method.

REFERENCES:
patent: 5113278 (1992-05-01), Degura et al.
patent: 2002/0057726 (2002-05-01), Williams et al.

Affiliated with

Also associated with

Rating

Methods and apparatus for offset chirp modulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for offset chirp modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for offset chirp modulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3473130