Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Patent
1996-09-20
1998-10-13
Ton, Dang
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
370210, H04J 100
Patent
active
058223231
ABSTRACT:
An IDFT section has a set of input terminals subjected to components of an information signal respectively. The IDFT section subjects the information signal to inverse discrete Fourier transform to convert the information signal into a pair of a first in-phase signal and a first quadrature signal while assignment of the components of the information signal to the input terminals is in a first state. A first power-related value of one of the first in-phase signal and the first quadrature signal is calculated. The first in-phase signal and the first quadrature signal are written into an output buffer memory when the calculated first power-related value does not exceed a predetermined reference value. The assignment of the components of the information signal to the input terminals is changed from the first state to a second state when the calculated first power-related value exceeds the predetermined reference value. The IDFT section subjects the information signal to inverse discrete Fourier transform to convert the information signal into a pair of a second in-phase signal and a second quadrature signal while the assignment of the components of the information signal to the input terminals is in the second state. A second power-related value of one of the second in-phase signal and the second quadrature signal is calculated. The second in-phase signal and the second quadrature signal are written into the output buffer memory when the calculated second power-related value does not exceed the predetermined reference value.
REFERENCES:
patent: 4107470 (1978-08-01), Maruta
patent: 5425050 (1995-06-01), Schreiber et al.
Kaneko Keiichi
Ohno Katsumi
Ton Dang
Victor Company of Japan Ltd.
LandOfFree
Frequency division multiplexed signal generating apparatus and r does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency division multiplexed signal generating apparatus and r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency division multiplexed signal generating apparatus and r will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-320878