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cable modem uses 64-QAM or 256-QAM modulation techniques to transmit information from the head end to the cable modem (downstream transmission). If a cable modem uses 256-QAM, this means 8 bits per signal and each signal is trans-mitted at 6 MHz. Theoretically the data rate of a cable modem is: 8 6Mhz 48Mbps.
17 paź 2023 · Cable modems use a cable TV network to connect residential computers to the Internet. The head end of a cable TV system uses TV channels to transmit information to a cable modem at the subscriber site.
1 lut 2001 · Cable modems and DSL offer access speeds about 10-30 times higher than dial-up access and are termed broadband Internet access.
2 sty 2020 · The infrastructural meanings of the modem, a gateway device that allowed a digital system to be layered on top of an installed base of analog lines, depended on time, place, and usage.
At the heart of any modern communication system is the modem, connecting the data source to the communication channel. This first course in the mathematical theory of modem design introduces the theory of digital modulation and coding that underpins the design of digital telecommunications systems. A detailed treatment of core subjects is ...
Cable modem technology enables its users to access the Internet at line speeds of some 300 kb/s and above. It utilizes coaxial cables entering subscribers' premises to simultaneously deliver cable TV programs, access the Internet, and also provide voice telephony.
Cable modem (CM): Client device for providing data over a cable TV network. Read all about it here. Channel: A specific frequency and bandwidth combination. Used in this context about TV channels for television services and downstream data for cable modems. CMTS: Cable Modem Termination System.
