By Topic

Tuner and demodulator performance for cable distributed D2-MAC TV-signals

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
L. J. M. Ruitenburg ; Philips Consumer Electron., Eindhoven, Netherlands

Results are presented of a system study on cable distribution of D2-MAC (time-multiplexed analog component) TV signals. With bit error rate as a D2-data performance parameter and visibility of disturbing signals as a performance reference for MAC-video components, system requirements are derived and related to existing concepts. The D2-MAC TV-signal is a time multiplex consisting of a duobinary D2-data part at a 10.125 Mb/s bitrate and a MAC-video part. The -time compression factor for luminance is 3/2; for both of the chrominance components the factor is 3. AM-vestigal sideband transmission on the cable is assumed with a vestigal sideband of VSB=0.75 MHz, and Nyquist filtering in the receiver, while 10% residual carrier is applied during black signal levels and 100% carrier is applied during white. The logical `1' -levels of the duobinary D2-data are specified at 19% and 91% with respect to the carrier level during white signal levels. It was found that the out-of-channel selectivity requirements are more severe than for conventional TV standards if no video-scrambling is applied. This conclusion can be extended to all time-multiplexed video systems. The performance of existing quasisynchronous demodulator concepts is insufficient for proper data recovery. Tilt is a critical parameter if no correction techniques are applied. The measuring methods as used for D2-data to investigate its sensitivity for tolerances on transmission parameters are found to be also suitable for other practical investigations on digital transmissions

Published in:

IEEE Transactions on Consumer Electronics  (Volume:35 ,  Issue: 1 )