Difference between Broadband and Baseband Transmission
Broadband systems use modulation techniques to reduce the effect of noise in the environment. Broadband transmission employs multiple channel unidirectional transmission using a combination of phase and amplitude modulation.
Baseband is a digital signal transmitted on the medium using one of the signal codes like NRZ, RZ Manchester biphase-M code, etc. called baseband transmission.
These are the following differences between Broadband and Baseband transmission.
- Digital signaling.
- Frequency division multiplexing is not possible.
- Baseband is the bi-directional transmission.
- A short-distance signal traveling.
- The entire bandwidth is for single signal transmission.
- Example: Ethernet is using Basebands for LAN.
- Analog signaling.
- The transmission of data is unidirectional.
- Signal traveling distance is long.
- Frequency division multiplexing is possible.
- Simultaneous transmission of multiple signals over different frequencies.
- Example: Used to transmit cable TV to premises.
|S. No||Basis of Comparison||Baseband Transmission||Broadband Transmission|
|1.||Type of Signal||In baseband transmission, the type of signaling used is digital.||In broadband transmission, the type of signaling used is analog.|
|2.||Direction Type||Baseband Transmission is bidirectional in nature.||Broadband Transmission is unidirectional in nature.|
|3.||Signal Transmission||The Signal can be sent in both directions.||Sending of Signal in one direction only.|
|4.||Distance covered by the signal||Signals can only travel over short distances. For long distances, attenuation is required.||Signals can be traveled over long distances without being attenuated.|
|5.||Topology||It works well with bus topology.||It is used with a bus as well as tree topology.|
|6.||Device used to increase signal strength||Repeaters are used to enhance signal strength.||Amplifiers are used to enhance signal strength.|
|7.||Type of Multiplexing used||It utilizes Time Division Multiplexing.||It utilizes Frequency Division Multiplexing.|
|8.||Encoding Techniques||In baseband transmission, Manchester and Differential Manchester encoding are used.||Only PSK encoding is used.|
|9.||Transfer medium||Twisted-pair cables, coaxial cables, and wires are used as a transfer medium for digital signals in baseband transmission.||Broadband signals were sent through optical fiber cables, coaxial cables, and radio waves.|
|10.||Impedance||Baseband transmission has a 50-ohm impedance.||Broadband transmission has a 70-ohm impedance.|
|11.||Data Streams||It can only transfer one data stream at a time in bi-directional mode.||It can send multiple signal waves at once but in one direction only.|
|12.||Installation and Maintenance||Baseband transmission is easy to install and maintain.||Broadband transmission is difficult to install and maintain.|
|13.||Cost||This transmission is cheaper to design.||This transmission is expensive to design.|
|14.||Application||Typically seen in Ethernet LAN networks.||Typically found in cable and telephone networks.|