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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 ...
The NETGEAR Nighthawk CAX80, a high performing modem/router combo that works with internet plans up to 1200 Mbps, has similar specs as the Comcast/Xfinity-only Motorola MT8733—DOCSIS 3.1, 2.5 ...
DOCSIS 3.0 and lower — 4 Gigabit b/g/n a 2.4 5.0 300 1 USB 2.0 — 2 1 6.5 FRITZ!Box 6430 Cable Cable DOCSIS 3.0 and lower — 4 Gigabit b/g/n 2.4 450 2 USB 2.0 0 2 0 7.30 German version only FRITZ!Box 6810 LTE LTE — 1 Fast b/g/n 2.4 300 — — Integrated a/b 0 0 — 6.35 Dual-band LTE modem (800 MHz, 2600 MHz) FRITZ!Box 6840 LTE LTE — 4 ...
Additionally, higher-performance RFoG systems not only support DOCSIS 3.0 with bonding, but also enable 64 quadrature amplitude modulation (QAM) upstream transmission in a DOCSIS 3.0 bonded channel, dramatically increasing return-path bandwidth. Improved operational expenses; RFoG brings the benefits of a passive fiber topology.
A few days later, Stop The Cap! reported that DOCSIS 3.0 customers would benefit from a speed and usage increase. By February 21, Express speeds of up to 12 Mbit/s would now be up to 18 Mbit/s, while Extreme speeds of up to 24 Mbit/s would be increased to 28 Mbit/s. Also, Ultimate speeds of up to 50 Mbit/s would now be up to 75 Mbit/s.
1957: Kineplex, multi-carrier HF modem (R.R. Mosier & R.G. Clabaugh) [62] [63] 1966: Chang, Bell Labs: OFDM paper [3] and patent [4] 1971: Weinstein & Ebert proposed use of FFT and guard interval [6] 1985: Cimini described use of OFDM for mobile communications; 1985: Telebit Trailblazer Modem introduced a 512 carrier Packet Ensemble Protocol ...