Broadband Cable Access is a method of delivering high-speed internet access to customers using the same coaxial cables that are used to provide cable television services.
In a broadband cable access system, a cable modem is installed in the customer’s home and is connected to the cable TV network via a coaxial cable. The modem then communicates with the cable company’s headend, which is the central hub for the cable network, to access the internet.
The cable modem uses a technique called Frequency Division Multiplexing (FDM) to divide the available bandwidth on the cable into separate channels for upstream and downstream data transmission. The cable modem can then modulate and demodulate the digital signals on these channels, allowing for high-speed data transfer.
The maximum speed of broadband cable access depends on the available bandwidth of the cable network and the number of users sharing the same network. Cable companies often use a technique called “channel bonding” to increase the bandwidth available for internet access by combining multiple channels.
Broadband cable access is popular because it is widely available and can provide high-speed internet access to many customers at a relatively low cost. However, the quality of service can be affected by the number of users sharing the same network, and the speed of the connection can be influenced by factors such as distance from the cable headend and network congestion.