Multilevel modulator comprising a compact error correcting code

Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

332 17, 329104, 329109, 375 19, 375 39, 371 2, H03K 700, H03K 900

Patent

active

047163852

ABSTRACT:
In a multilevel modulator for use in modulating an input digital signal of N levels into a multilevel modulated signal, the input digital signal is converted by a code converting unit into a major converted signal for the input digital signal and a minor converted signal corresponding to the major converted signal. The major converted signal is rearranged into groups each of which consists of a predetermined number of levels smaller than N and which is produced in a time division fashion together with with minor converted signal. A signal producing unit processes each group to produce a Lee-error correcting code sequence. Alternatively, major and minor converted signals are produced on quadrature-phase amplitude modulation of a circular signal arrangement of N-levels to divide the circular signal arrangement into a square signal arrangement and the remaining signal arrangement. In a counterpart multilevel demodulator, an inverse operation is carried out to reproduce the input digital signal.

REFERENCES:
patent: 4529950 (1985-07-01), Chazenfus et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Multilevel modulator comprising a compact error correcting code does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multilevel modulator comprising a compact error correcting code , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilevel modulator comprising a compact error correcting code will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-465084

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.