IMPORTANT MESSAGE: We are relocating warehouses on Tuesday, 4th April. Our last orders will be dispatched on Monday, 3rd April and we will resume dispatch on Thursday, 6th April. Back-Orders and Express Orders may be delayed if ordered during this period. If you are unsure regarding your order, please send us an email on: contact@zookal.com and we will get back to you as soon as possible

Telecommunications Engineering

Free Shipping over $50

and free returns nationwide (rentals only)

14-day

Money Back Guarantee

Telecommunications Engineering

ISBN : 9780412562709
Publisher : Nelson Thornes Ltd
Author(s) :
Edition : 3rd ed. 1994
Overview Telecommunication engineering is concerned with the transmission of in- formation between two distant points. Intuitively we may say that a signal contains information if it teils us something we did not already know. This definition is too imprecise for telecommunications studies, and we shall devote a section oftbis chapter to a formal description ofinformation. For the present it is sufficient to say that a signal that contains information varies in an unpredictable or random manner. We have thus specified a primary characteristic of the signals in telecommunications systems; they are random in nature. These random signals can be broadly subdivided into discrete signals that have a fixed number of possible values, and continuous signals that have any value between given Iimits. Whichever type of signal we deal with, the tele- communication system that it uses can be represented by the generalized model of Fig. 1. 1. The centrat feature of this model is the transmission medium or channel. Some examples of channels are coaxial cables, radio links, optical fibres and ultrasonic transmission through solids and liquids. It is clear from these examples that the characteristics of channels can vary widely. The common feature of all channels, however, is that they modify or distort the waveform of the transmitted signal. In some cases the distortion can be so severe that the signal becomes totally unrecognizable. In many instances it is possible to minimize distortion by careful choice of the transmitted signal waveform.

Out of
Stock

Sorry but this item is out of stock, please check back again soon.