This scheme places extra constraints on the level of signal(s) of interest (SOI) in Loop 2 and requires that the SOI power level be much lower than the total power of distortion products and noise at the second canceler
Level (3): This is a computer algorithm that implements the noise canceler
. It may be customized for a specific use.
Lee, "Analysis of the performance and sensitivity of an eigenspace-based interference canceler
," IEEE Trans.
"We put in a single shelf with two Coherent Communications echo canceler
cards in it," says McConnell, explaing that the cards are linked to various PBXs and multiplexers for testing purposes.
Chapter 4 describes the sidelobe canceler
system, which allows suppression of high-duty cycle jammer signals, and the working principles of sidelobe cancellation.
"A primary rate echo canceler
should interpret the D channel message and disable the echo cancellation whenever the PBX signals that a data call is being set up.
The UHF, low PRF radar suppresses clutter with an MTI canceler
followed by a 16 point FFT Doppler filter.
The video terminals selected are a single-cabinet design that contains a monitor, a face-to-face camera, graphics camera, microphone, speakers, echo canceler
, slide projector and video codec.
"I remember as a kid assembling echo cancelers
at the dining room table," Chris Cooney said.