Data Transmission Emdadul HaqueID: 151-19-1687

Some important term

Data Transmission Data transmission is the process of sending digital or analog data over a communication medium to one or more computing, network, communication or electronic devices.

Data Transmission

The successful transmission of data depends on two factors:

• quality of the signal being transmitted

• characteristics of the transmission medium

Quality of Signals

Signal Conversion• Analog Transmission

• Digital Transmission

Transmission Medium

Data transmission occurs between transmitter and receiver over some

transmission medium.

Communication is in the form of

electromagnetic waves.

Guided media twisted

pair, coaxial cable, optical fiber

Unguided media

(wireless)air,

vacuum, seawater

Transmission Processsending of a signal with limited duration, for example a block or packet of data, a phone call, or an email. Transmission technologies and schemes typically refer to physical layer protocols such as i. modulationii. demodulationiii. line codingiv. equalizationv. error controlvi.  bit synchronizationvii. multiplexing

Some Problems during Transmission

• Attenuation signal strength falls off with distance over any transmission medium• Noiseunwanted signals inserted between transmitter and receiver• DistortionDistortion is the alteration of the original shape (or other characteristic) of a signal.

Thank You