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digital modulation |
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digital modulationThe altering of a carrier by a digital signal. See modulation and carrier. digital modulation [′dij·əd·əl ‚mäj·ə′lā·shən] (communications) A method of placing digital traffic on a microwave system without use of modems, by transmitting the information in the form of discrete phase or frequency states determined by the digital signal. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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QAM uses satellite signals that have been converted from QPSK/L-Band satellite signals; a digital modulation standard used by the cable television industry. In addition to using AMC-18 for carriage of the HDTV networks offered through HITS Quantum, the CMC relies on SES AMERICOM's 50-state AMC-4 satellite to deliver a high capacity service that operates at 256 QAM digital modulation. 249), for both digital modulation (DTS) and frequency hopping systems. |
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