B.TECH 4TH SEMESTER(ELECTRONICS AND COMMUNICATION ENGINEERING)


                                                   COMMUNICATION SYSTEMS


Linear modulation



Time and frequency domain expression of AM (including intensity modulation of light)



DSB, SSB and VSB


Generation of linearly modulated signals


 demodulation detection


envelope detection


Coherent  detection


Angle modulation


Instantaneous frequency


Phase modulation


Frequency modulation


Single tone FM and its spectral analysis


NBFM


WBFM


Bandwidth requirements of angle modulated signals


Demodulation of angle modulated signals


Radio and Television broadcasting


AM radio broadcasting


FM radio and TV broad casting


Frequency division multiplexing




Radio  transmitters and receivers






Sampling theory


pulse code modulation


pulse code demodulation


Delta modulation


Adaptive delta modulation



Review of probability and random variables


Cumulative density functions


Probability density functions


Moments


Strict Sense Stationary process


Wide Sense Stationary process


Correlation


Independency


orthogonality


Random processes


Specification of random process


Ergodicity process


Stationary process


Correlation functions


power Spectra


Gaussian processes


Rayleigh Process


Wiener Process


Poisson Process


Stationary & Non-Stationery Process


Brownian Motion


Strict Sense  Stationary


Wide Sense Stationary


Application of Random Signal theory


Noise in Communication systems


Thermal noise


Shot noise




White noise


Noise equivalent bandwidth




Noise figure and noise temperature




Time domain representation of narrowband noise




Properties of narrowband noise




Noise in CW modulation systems





Figure of merit





Noise performance of linear and exponential modulation





Pre-emphasis and de-emphasis in FM




Comparison of the noise performance of CW modulation schemes



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