Digital phase modulator formed with a fixed-point digital signal

Details Digital phase modulator formed with a fixed-point digital signal Digital phase modulator formed with a fixed-point digital signal

1996-06-27

1998-11-03

Mis, David

Modulators

Phase modulator

364729, 455110, H03C 300

Patent

active

058314881

ABSTRACT:
Data from an A/D converter is supplied to a fixed-point DSP. The fixed-point DSP adjusts the level of the data x so that computed results do not exceed .+-.1. In succession, for the i-th data x.sub.i, the fixed-point DSP computes cos .pi..multidot.x.sub.i when i=1, 5, . . . , -sin .pi..multidot.x.sub.i when i=2, 6, . . . , -cos .pi..multidot.x.sub.i when i=3, 7, . . . and sin .pi..multidot.x.sub.i when i=4, 8, . . . and outputs a digital phase modulated signal y(t) by outputting the computed results in order. Trigonometrical functions are computed by expanding them to a series so that the intermediate computed results do not exceed .+-.1.

REFERENCES:
patent: 4646321 (1987-02-01), Berlinsky
patent: 4660162 (1987-04-01), Berlinsky

Affiliated with

Also associated with

Rating

Digital phase modulator formed with a fixed-point digital signal 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 phase modulator formed with a fixed-point digital signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital phase modulator formed with a fixed-point digital signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-693866