H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/16, 328/0.3
H04B 3/20 (2006.01) H04B 3/23 (2006.01) H04L 5/14 (2006.01)
Patent
CA 1101491
ABSTRACT: Digital echo canceler for a modem for data transmission by means of phase and, possibly, also ampli- tude modulation of a carrier, the ratio between carrier frequency fO and modulation rate l/T having the form P/Q, P and Q being integers. The echo canceler receives the binary data to be transmitted for generating an echo copy signal. An echo canceler of a simple implantation is obtained in that the echo canceler comprises means respons- ive to each symbol configuration at each instant iT for generating at least a number depending on the amplitude allotted to the carrier at said instant iT and for apply- ing this number to at least a given section of an assembly of adaptive digital filter whose output signals are combined for forming a digital version of the echo copy signal, the coefficients of these filters being adjusted by an assembly of adjusting circuits receiving said error signal in digital form and arranged for minimizing a predetermined function of said error signal.
295194
Baudoux Jean-Pierre
Macchi Cesar D.
Philips Commununication D'entreprise
Van Steinburg C.e.
LandOfFree
Digital echo canceler for a modem for data transmission by... 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 echo canceler for a modem for data transmission by..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital echo canceler for a modem for data transmission by... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-709680