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power point presentation of the topic digital modulation

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Sakshi Verma
Sakshi Verma
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Digital modulation techniques Submitted By - KM Sakshi Verma Roll no.-1705918 Section-CS12

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In this presentation, we will study about • What modulation is ? • Categories of modulation (Analog and Digital) • Types of Modulation (Analog and Digital)

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1. Modulation • Modulation is a process of suppressing low frequency information signal on a high frequency carrier signal. OR Modulation is a process of modifying the any of the characteristics (amplitude, frequency, phase) of high frequency carrier in accordance with low frequency information signal.

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Remember, for modulation require two signals, high frequency carrier and low frequency • information signal (also called modulation signal). • The resultant wave achieved known as “modulated signal”. i.e. information (modulating signal) + carrier = modulated signal. • Why there is need of modulation? • Is there any substitute of modulation?

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