Modulators – Frequency shift keying modulator or minimum shift keying...
Patent
1998-03-05
1999-08-31
Grimm, Siegfried H.
Modulators
Frequency shift keying modulator or minimum shift keying...
332103, 332119, 375205, 375298, 375303, 375308, H04L 2712, H04L 2720, H04L 2736
Patent
active
059458852
ABSTRACT:
A digital baseband modulator having a flexible architecture that is readily adaptible to a variety of digital modulation types is provided. A symbol builder maps the input data to a series of modulation states corresponding to data symbols that are represented as state indexes. A pair of digital filters accepts the state indexes being generated by the symbol builder to provide both up-sampling and filtering functions. The digital filters are implemented using random access memory (RAM) to implement blocks of interpolating look-up multipliers which may be readily configured between fast, normal, and long modes. The filtered output data from the digital filters is provided to a resampler that converts the filtered output data to an output sample rate that corresponds to the sample rate of output DACs and corresponding analog low pass filters.
REFERENCES:
patent: 4757519 (1988-07-01), Collison et al.
patent: 4843351 (1989-06-01), Edwards et al.
patent: 5633893 (1997-05-01), Lampe et al.
patent: 5694093 (1997-12-01), DaSilva et al.
patent: 5825828 (1998-10-01), Sasaki
Anklam William J.
Bloom Alan R
Schwartz David J
Barker Douglas J.
Grimm Siegfried H.
Hewlett--Packard Company
LandOfFree
Digital baseband modulator adaptable to different modulation typ does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital baseband modulator adaptable to different modulation typ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital baseband modulator adaptable to different modulation typ will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2427361