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Communication is the method by which two persons can share any meaningful information with each other at an instant. It requires a sender who wants to communicate, message which is to be conveyed & receiver who receives this message at the receiver end. Now a days due to the advancements and technology, digital communication is receiving wide attention among researchers. Digital communication is achieved by sending digital messages in form of pulses 0 & 1 through modem. Modem is mediator to transfer the message which consists of both modulator & demodulator. The communication can only be possible with modulation.
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