What is transmission loss

The word transmission impairment in Hindi means transmission loss i.e. whatever data and information you are sending is not received properly, hindered or interrupted.

In communication or transmission systems, analog signals travel through the transmission media, which degrades the quality of the analog signal, meaning that the signal at the beginning of the medium is not the same as the signal at the end of the medium. Incompleteness causes signal loss. Transmission loss occurs when the received signal is different from the transmitted signal. As we know, the signal can be transmitted as an analog signal or it can be transmitted as a digital signal. In analog signal, due to transmission fault, the received signal gets different amplitude or shape.

Types of Transmission Loss:

If the transmission media is completely accurate, the receiver can receive exactly the same signal as the transmitter sent. But the communication lines are usually not perfect, so the received signal is not the same as the transmitted signal. There are various reasons for transmission loss such as:-

-Attenuation distortion

-Delay distortion


Attenuation distortio-

Attenuation is a term that refers to any reduction in signal strength. This happens with any type of signal, be it a digital signal or an analog signal.

The amount of energy depends on the frequency. If the attenuation is too high, the receiver may not be able to detect the signal at all, or the signal may drop below the noise level. For reliable communication, attenuation and disengagement must be constant over the range of frequencies of transmission.

Weak distortion is an analog guineal distortion that occurs during transmission when the transmission medium does not have a flat frequency response in the bandwidth of the medium or the frequency spectrum of the signal.

Attenuation in computer networking is the loss of communication signal strength which is measured in decibels. As the rate of attenuation increases, transmissions such as an email the user is trying to send or a phone call become more distorted.

Delay distortion-

If a signal changes its form or shape, it is called distortion. Signals composed of different frequencies are mixed signals. Distortion occurs in these mixed signals.

It is a directed transmission media phenomenon where network data signals are transmitted through a medium at a fixed speed and speed. Delay distortion occurs when the signal velocity and the amplitude force differ. This means that not all signals arrive at the same time, resulting in distorted signals.


Noise is also another cause of transmission loss. There is some random or unwanted signal mixed with the original signal which is called noise. Noise can corrupt signals in a number of ways, including distortion introduced by transmission media.

Noise refers to any extraneous and unwanted information that interferes with the transmission signal.

Noise can reduce transmission power and impair overall communication efficiency. In communication, noise can be acquired by radio waves, power lines, electricity and poor connections.

There are many types of noise, such as thermai noise, induced noise, crosstalk noise and impulse noise that can corrupt the signal.

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