in the first place there are two phenomena cause to any channelizeize that is propagated down. These are Amplitude distortion & frequency distortion. According to this its take result the received signal is badly distorted and apprehend a large amount of noise.
The noise is defined as any unwanted signal that tends to interfere with the required signal. Because of noise, the infection of the signal is disturbed and errors are introduced in the received signal. As well as noise can originate from a variety of sources. The two basic sources are natural noise and manmade noise. These are sources external to receiving system. In addition, noise may be generated internally in the system.
In analog transmission system noise is major problem. It can be create by magnetic fields, electronic stuff or even course by lighting bolts. These noises will affect the analog transmission and mess up with the analog signals if the noise is too strong.
school of thought 1 implies that the noise induced into the section can be re lay by a single noise source placed at the output of the amplifier the signal from the previous section. The section instantaneously becomes noise free , This noise will be vitiated as it propagates down the section in the same substance and the same amount as the signal .However , each habitual criminal amplifier will amplify the signal and the noise at the stimulant drug to the amplifier, but more noise is added at the output of the amplifier , which is caused by the noise induced into that section of the medium. The net effect is that the signal to noise ration at the distant receiver is lots worse that what it was at the output of the transmitter.If you want to get a full essay, order it on our website: Ordercustompaper.com
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