DETAILED CONTENTS
1. Introduction
Data Communication- Components, Data representation, Data flow
Networks- Distributed processing, Network criteria , Physical structures
Network Category- LAN, WAN, MAN
2. Data and Signals
Analog and Digital data, Analog and digital signals, Periodic and Non Periodic signals,
periodic analog signals
Digital Signals- Bit rate, Bit length, Digital signal as a composite analog signal,
transmission of digital signals
Transmission Impairment- Attenuation, Distortion and noise
Performance- bandwidth, throughput, latency, jitter
3. Digital and Analog Transmission
Analog transmission- Digital to Analog Conversion- ASK, PSK, FSK
Analog to Analog Conversion- AM, PM,FM( No mathematical treatment)
Digital transmission- Digital to digital conversion- coding and schemes
Analog to digital conversion- PCM and Delta Modulation (DM)
Transmission modes- Serial and parallel transmission
4. Multiplexing – FDM, WDM, TDM
5. Transmission media
Guided media-Twisted pair cable, Co-axial cable, fiber optics cable, Unguided Media- radio wave, Microwave, Infrared
6. Error Detection and Correction
Types of Errors, redundancy, detection v/s correction, Forward error correction v/s retransmission. Error detection through Parity bit, block parity to detect double errors and correct single errors. General principles of error detection and correction using cyclic redundancy check
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