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.
|Basis of Comparison
|Type of Signal
|In baseband transmission, the type of signaling used is digital.
|In broadband transmission, the type of signaling used is analog.
|Baseband Transmission is bidirectional in nature.
|Broadband Transmission is unidirectional in nature.
|The Signal can be sent in both directions.
|Sending of Signal in one direction only.
|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.
|It works well with bus topology.
|It is used with a bus as well as tree topology.
|Device used to increase signal strength
|Repeaters are used to enhance signal strength.
|Amplifiers are used to enhance signal strength.
|Type of Multiplexing used
|It utilizes Time Division Multiplexing.
|It utilizes Frequency Division Multiplexing.
|In baseband transmission, Manchester and Differential Manchester encoding are used.
|Only PSK encoding is used.
|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.
|Baseband transmission has a 50-ohm impedance.
|Broadband transmission has a 70-ohm impedance.
| 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.
|Installation and Maintenance
|Baseband transmission is easy to install and maintain.
|Broadband transmission is difficult to install and maintain.
|This transmission is cheaper to design.
|This transmission is expensive to design.
|Typically seen in Ethernet LAN networks.
|Typically found in cable and telephone networks.
|In this, capacity of frequency is less than 100 kHz.
|In this, capacity of frequency is higher than 100 kHz.
|It is best for wired networks.
|It is best for non-wired networks.
|The structure is very simple, and no special hardware is required.
|The structure is complex as it needs unique hardware.
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