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    PCM PPT Harshith Kumar P

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    shruthi p r
    PCM is a digital technique that involves sampling an analog signal at regular intervals, quantizing the sample amplitudes into discrete levels, encoding the levels into binary digits, and transmitting the binary codes. The key steps are sampling the analog signal, quantizing the samples into discrete levels represented by binary numbers, and encoding the digital data for transmission. PCM provides advantages like higher noise immunity, uniform transmission quality, and integration with digital networks compared to analog transmission.

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    PCM PPT Harshith Kumar P

    Uploaded by

    shruthi p r
    422 views8 pages
    PCM is a digital technique that involves sampling an analog signal at regular intervals, quantizing the sample amplitudes into discrete levels, encoding the levels into binary digits, and transmitting the binary codes. The key steps are sampling the analog signal, quantizing the samples into discrete levels represented by binary numbers, and encoding the digital data for transmission. PCM provides advantages like higher noise immunity, uniform transmission quality, and integration with digital networks compared to analog transmission.

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    PCM is a digital technique that involves sampling an analog signal at regular intervals, quantizing the sample amplitudes into discrete levels, encoding the levels into binary digits, and transmitting the binary codes. The key steps are sampling the analog signal, quantizing the samples into discrete levels represented by binary numbers, and encoding the digital data for transmission. PCM provides advantages like higher noise immunity, uniform transmission quality, and integration with digital networks compared to analog transmission.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    422 views8 pages

    PCM PPT Harshith Kumar P

    Uploaded by

    shruthi p r
    PCM is a digital technique that involves sampling an analog signal at regular intervals, quantizing the sample amplitudes into discrete levels, encoding the levels into binary digits, and transmitting the binary codes. The key steps are sampling the analog signal, quantizing the samples into discrete levels represented by binary numbers, and encoding the digital data for transmission. PCM provides advantages like higher noise immunity, uniform transmission quality, and integration with digital networks compared to analog transmission.

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    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 8

    PULSE CODE MODULATION

    BY HARSHITH KUMAR P
    WHAT IS MODULATION?
    • Process of Varying one or more properties of a carrier signal with a Modulation signal

    Pulse modulation:
    • Signals are transmitted in the form of Pulses.
    • Two categories
    1. Analog
    2. Digital

    DIGITAL
    • A code which indicates the sample amplitude to the nearest
    predetermined level.
    PULSE CODE MODULATION (PCM)

    • PCM is a digital technique that involves sampling an analog signal at regular intervals and coding the measured amplitude
    into a series of binary values, which are transmitted by modulation of a pulsed, or intermittent, carrier.
    • To convert analog signal into digital signal.
    • Signals are transmitted in binary codes.
    • Techniques used in PCM:
    1. Sampling
    2. Quantizing
    3. Encoding
    • The signal voltages are divided into levels and each is assigned binary number representing the level close to it’s amplitude.
    • First, Analog signal is converted into discrete signal by sampling.
    • Then, we do quantization to convert these signal into digital signal.
    • Then it will be encoded and it produces a digital data which are in series of binary digits.
    • The number of levels depends on the number of bits used to express the sample value and it is given by N=2 m
    BLOCK DIAGRAM OF PCM:
    WAVEFORM OF PCM:
    ADVANTAGES OF PCM:
    • Transmitter efficiency is more.
    • It is mainly used in long distant communication
    • It has higher noise immunity when compared to other method
    • Uniform transmissions quality.
    • Integrated digital network.
    • The PCM signal is more resistance to interference than normal signal.
    • Low manufacturing cost.
    • Good performance over very poor transmissions paths.
    DISADVANTAGES OF PCM
    • More bandwidth is required when compared to analogue systems.
    • In this method encoding, decoding and quantization of the circuit have to be done. This makes it more
    complex.

    APPLICATIONS:
    • Used in Telephony.
    • It is used in Space communication.
    • It is used in the satellite transmission system.
    • One of the recent applications is the compact disc.
    • Digital audio applications.
    THANK YOU

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