Communication Engineering (EC2311) 4 Units Scanned Lecture Notes - Niranjan Edition

  • 2Feb
  • 2015
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    Anna University , Chennai
    Department of B.E-Electrical and Electronics Engg
    Fifth Semester
    EC2311 Communication Engineering
    Scanned Lecture Notes (Units 1 , 2 , 3 and 4)
    (Regulation 2008)

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    Content : 
    COMMUNICATION ENGINEERING

    UNIT-1

    ANALOG COMMUNICATION
    Communication
    Sender or transmitter
    Receiver
    Communication channel
    AM (Amplitude Modulation)
    Classification of modulation
    Modulation
    1. Analog modulation
    2. Digital modulation
    Amplitude modulation
    Mathematical representation of an AM wave
    AM frequency spectrum
    Side bands
    Phaser representation of an AM with carrier
    Power relation
    Carrier power
    Power in the side bands
    Generation of the AM –DSB
    Based on the power level
    Low level AM modulation
    Emitter modulator
    High level AM modulation
    Principle of operation
    Generation of AM wave using non-linear properties
    Square law modulation
    1. A non-linear device
    2. A band pass filter
    3. A carrier source andmodulating signal
    Balanced modulator
    DSB-SC
    Modification of amplitude modulation
    SSB-SC
    Transmission bandwidth
    Power calculation
    AM transmitter
    Low level modulated AM transmitted
    High level modulated AM transmitted
    AM receiver
    Function of the receiver
    1. Carrier frequency tunning
    2. Filtering
    3. Amplification
    Receiver parameters
    Selectivity
    Classification of AM receiver
    Tuned radio frequency
    Operation
    AM super heterodyne receiver
    Angle modulation
    Classification
    1. Frequency modulation
    2. phase modulation
    Representation of PM
    Modulation index of PM
    Deviation sensitivity
    Frequency modulation
    Representation of FM
    Frequency deviation
    Modulation index
    Deviation ratio
    Percentage modulation of FM wave
    Types of frequency modulation
    Narrow band FM
    Principle of operation
    Wide band FM
    Generaton of FM
    Direct method
    Indirect method
    Reactance tube modulation
    Armstrong method


    UNIT-2

    DIGITAL COMMUNICATION
    Pulse modulation
    Sampling process
    Sampling theorem
    Types of sampling method
    1. Ideal
    2. Natural sampling
    3. Flat topped sampling
    Nyquist rate
    Aliasing
    Pulse ampliyude modulation
    Types of PAM
    1. Natural PAM
    2. Falt top PAM
    Generation of natural PAM
    Pulse type modulation
    Detection of the flat top PAM
    Pulse position modulation
    PPM signal demodulation
    Quantization and coding
    Types
    1. Uniform
    2. Non-uniform
    Encoding
    Types of line code
    DPCM , DM , and ADM
    Delta modulation
    DM receiver
    Quantization noise
    Granular noise
    ADM transmitter
    ADM receiver
    Pass band data transmission
    Classification of digital modulation detection techniques
    1. Coherent
    2. Non-coherent
    ASK generator
    ASK waveform
    ASK detector
    FSK generation
    Frequency deviation
    Phase shift keying
    BPSK generation
    BPSK detection
    QPSK receiver
    Minimum shift keying
    MSK transmitter
    QAM


    UNIT-3

    SOURCE CODE , LINE CODE AND ERROR CONTROL
    Primary communication
    Amount of information
    Principle
    Units of information
    Properties of information
    Average information
    Rate of infprmation
    Discrete memoryless channels
    Binary symmetric channel
    Mutual information
    Properties
    Channel capacity
    Noise free channel
    Symmetric channel
    Source coding
    Data compensation
    Prefix coding
    Huffman coding
    Noise less coding theorem
    Shannon’s first theorem
    BW-SNR trade off codes
    Types of line coding
    1. Polar
    2. Unipolar
    3. Bipolar
    Error control codes
    Types of code

    UNIT -4

    MULTIPLE ACCESS TECHNIQUES
    Introduction
    Duplexing
    Guard bands

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