Transmission Technologies

Transmission Technologies

The following are some technologies that apply to communications: -

. Broadband Transmission
. Baseband Transmission

Broadband Transmission

Broadband transmission enables two or more communication channels to share the bandwidth of the transmission media. Broadband networks can simultaneously accommodate video, voice, and data. ISDN is an example of a WAN communication service that can provide broadband transactions.

Bandwidth is basically the difference between the highest and lowest frequencies in a given range. This refers to the capacity of the media. The greater the bandwidth, the faster the data-transfer capabilities will be.

For example: - Ethernet has a bandwidth of 10 megabits per second (Mbps) and Token Ring has a bandwidth of either 4Mbps or 16Mbps.

Baseband Transmission

Baseband transmission uses digital signals over a single frequency. With baseband transmission, the entire communication channel capacity is used to transmit a single data signal. Most LANs use baseband technology.