Electrical Engineering in Telecommunications Essay

Electrical Engineering in Telecommunications - Essay ExampleThe next step is for telecommunication engineers to outline a transmission and reception of the transmitted information. In designing the transmitters and receivers, the engineers have to factor in the force-out consumption especially of the transmitters since a weak signal ordain due to low or insufficient power will be susceptible to corruption by noise so that the sent information is real as jumbled or incoherent. Looked at simplistically, two telephone handsets connected unneurotic need a battery in between to provide the electric signal to transmit voice signals as depicted below d1 d2 Handset Battery Handset D Fig 1 Simple telecommunication radio link In the preceding(prenominal) diagram signal will be transmitted a total distance D. d1 and d2 are the distances of each handset to the battery. Now D in practice can be a very long distance, for which certain factors determine this distance which are attenuation and IR drop that limits the voltage across the transmitter. The common 19 gauge wire has a 30 km limit which is also affected by the quality of the handsets. To increase the aloofness of D, we can either increase the voltage of the power source (battery) or we can install amplifiers along D to solve the attenuation problem 2. The above diagram however is limited to just two people communicating in real life hundreds or even thousands of people communicate in a telecommunication network not just two people. This makes signalling a more complex problem so that a telecommunication network event must be adopted. These can be a start topology, a mesh topology or many single start topologies connected unitedly to form a network. Adding more users (subscribers) to a network over long distances will raise the cost of the network as many amplifiers and more power sources will be needed, a better solution is therefore needed. Only the most basic telecommunication systems require a power syst em on site. Telecommunication systems require a prime power source such as a mains electricity supply from a grid or a generator for sites in areas where there is no electric grid coverage and a standby power source should also be availed in flake there are extended interruptions to the primary power source with a means to protect the equipment for instance against lightning or surges. Telecommunication systems utilize Direct incumbent (DC) power which can be low current power of 24 or 48 volts dc or complex systems used at exchanges. A telecommunications DC power system consists of a rectifier system, battery system, charge and discharge autobuses, primary and secondary distribution systems and a voltage conversions system which work together to power a telecommunications network whether the old telephone lines (twisted copper pair), fibre optic, voice over internet protocol or wireless (radio). Rectifiers convert alternate Current (AC) to DC and are the major supply of power u sed for a telecommunication system. A rectifier also provides extra power to overcome the upcountry resistance of a battery before charging commences and it recharges the battery when AC power supply is restored after an interruption. The Battery stores charge to power components especially when there is no AC power and ensures there is constant power to the loads so break in communication occurs. It is constantly connected directly to the discharge bus so no interruption occurs