Adaptive Precoding for Downstream Crosstalk Precancelation in DSL Systems Using Sign-Error Feedback
Abstract
The performance of many very high bit rate digitalsubscriber line (VDSL) systems is limited by the effects of crosstalkamong the wires in a bundle. For the downstream, a precoder cancompensate for this, provided that some crosstalk channel informationis available at the transmitter. In this paper, we investigatethe issue of precoder design based on a particular type of feedback:it is assumed that each receiver sends back the (c ....etc

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Role & Role Effectiveness
Role, Role Space & Role Set
• Mutual obligations under a social system
• Functions one performs in response to the expectations
• Role is defined with the expectations of the role senders, including those of the role occupant.
• Role Space is a dynamic relationship between the self and the various roles an individual occupies and also amongst these roles
• Role Set is a subsystem or inter relationships between a particular role and the other roles in an organi ....etc

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Prepared by:
Ron Hranac


Digitally Modulated Carrier Amplitude



•When measuring the amplitude of a digitally modulated carrier, make certain you are measuring its average power level

•Use test equipment that performs automated measurements, rather than trying to make error-prone manual measurements that require bandwidth, IF filter, log amplifier and detection corrections


for more details, please visit
http://downloads.net1.cc/Other%20stuff/CaTV%20docs/Downstream%20RF%20Troublshooting.pdf

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