Difference Between Baseband and Broadband Transmission

Broadband system use modulation techniques to reduce the effect of noise in the environment. Broadband transmission employes multiple channel unidirectional transmission using a combination of phase and amplitude modulation while in baseband is a digital signal is transmitted on the medium using one of the signal codes like NRZ, RZ, Manchester biphase Mcode, etc. is called as a baseband transmission. Here this post gives information about the difference between broadband and baseband transmission to better understand this topic.

Baseband transmission:
  • Digital signaling.
  • Frequency division multiplexing is not possible.
  • The baseband is the bi-directional transmission.
  • Entire bandwidth is for single signal transmission.
  • Short distance signal traveling.
  • Ethernet is using baseband for LAN. 
  • Baseband transmission works well with bus topology. 
  • Manchester and differential Manchester encoding is used for baseband transmissionEntire bandwidth of the cable are consumed by a single signal in a baseband transmission.
Broadband transmission:
  • Analog signaling.
  • Transmission of data is unidirectional.
  • Signal traveling distance is long.
  • Frequency division multiplexing possible.
  • Simultaneous transmission of multiple signals over different frequency.
  • Used to transmit cable TV to premises.
  • The broadband transmission used with a bus as well as a tree topology.
  • PSK encoding must be used.
  • The signals are sent on multiple frequencies and allow all the multiple signals are sent simultaneously in a broadband transmission.

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