Phase decision circuit

Details Phase decision circuit Phase decision circuit

1998-06-25

2000-08-08

Pascal, Robert

Demodulators

Phase shift keying or quadrature amplitude demodulator

375324, 329308, H03D 300

Patent

active

061007552

ABSTRACT:
A phase decision circuit that can reduce the memory capacity of a ROM forming a look-up table. The quadrant decision section judges the quadrant to which an input signal belongs. The address conversion section converts the I-component digital signal and the Q-component digital signal of an input signal into address data based on the quadrant data. The phase angle data is read out of the ROM look-up table based on the converted address data so that the memory capacity of a ROM forming the ROM look-up table can be reduced to 1/8 of that of the conventional table, for example, in the QPSK modulation.

REFERENCES:
patent: 4998261 (1991-03-01), Van Driest et al.
patent: 5440269 (1995-08-01), Hwang
patent: 5533060 (1996-07-01), Kameo et al.

Affiliated with

Also associated with

Rating

Phase decision circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase decision circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase decision circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1153886