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DOCSIS employs a mixture of deterministic access methods for upstream transmissions, specifically time-division multiple access (TDMA) for DOCSIS 1.0/1.1 and both TDMA and S-CDMA for DOCSIS 2.0 and 3.0, with a limited use of contention for bandwidth reservation requests. In TDMA, a cable modem requests a time to transmit and the CMTS grants it ...
Wireless devices, BPL, and modems may produce a higher line rate or gross bit rate, due to error-correcting codes and other physical layer overhead. It is extremely common for throughput to be far less than half of theoretical maximum, though the more recent technologies (notably BPL) employ preemptive spectrum analysis to avoid this and so ...
The Multimedia over Coax Alliance (MoCA) is an international standards consortium that publishes specifications for networking over coaxial cable.The technology was originally developed to distribute IP television in homes using existing cabling, but is now used as a general-purpose Ethernet link where it is inconvenient or undesirable to replace existing coaxial cable with optical fiber or ...
How satellite internet works. Satellite Internet generally relies on three primary components: a satellite – historically in geostationary orbit (or GEO) but now increasingly in Low Earth orbit (LEO) or Medium Earth orbit MEO) [24] – a number of ground stations known as gateways that relay Internet data to and from the satellite via radio waves (), and further ground stations to serve each ...
A satellite modem or satmodem is a modem used to establish data transfers using a communications satellite as a relay.A satellite modem's main function is to transform an input bitstream to a radio signal and vice versa.
At the local community, an optical node translates the signal from a light beam to radio frequency (RF), and sends it over coaxial cable lines for distribution to subscriber residences. [2] The fiber optic trunk lines provide enough bandwidth to allow additional bandwidth-intensive services such as cable internet access through DOCSIS. [3]
1998: Magic WAND project demonstrates OFDM modems for wireless LAN; 1999: IEEE 802.11a wireless LAN standard (Wi-Fi) [65] 2000: Proprietary fixed wireless access (V-OFDM, FLASH-OFDM, etc.) May 2001: The FCC allows OFDM in the 2.4 GHz license exempt band. [66] 2002: IEEE 802.11g standard for wireless LAN [67]
Cable CPE: Cable Modem, [2] eMTA, Wireless Gateway, Wireless Voice, Gateway IPTV; Home Networking devices: Wifi Extender, MoCA [3] ECB; Module: DOCSIS 2.0, DOCSIS 3.0, [4] DOCSIS 3.1 [5] Infrastructure: Outdoor Cable Modem, Proactive Network, Management System, DOCSIS Probe; 5G Small Cell Backhaul Solutions; Coax Network Testing Tools
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