physical1

physical1 - 1 Physical Layer 1 Transmission, Media...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Physical Layer 1 Transmission, Media & Encoding EL536: Principles of Communication Networks Kang Xi, Polytechnic University 2 Outline Functionalities Analog & Digital Time & Frequency Transmission Medium Transmission Impairments Encoding EL536: Principles of Communication Networks Kang Xi, Polytechnic University 3 Physical Layer Goal Provide reliable data transmission 0100 1101 0101 0100 1101 0101 Physical Layer Defines Medium Signals Data rate Encoding Mechanical EL536: Principles of Communication Networks Kang Xi, Polytechnic University 4 Transmission Direction Simplex: A B only Half-Duplex: A B and B A, but not simultaneously Full-Duplex: A B and B A, and simultaneously EL536: Principles of Communication Networks Kang Xi, Polytechnic University 5 Analog & Digital EL536: Principles of Communication Networks Kang Xi, Polytechnic University 6 Analog & Digital Real world Mostly analog Why digital All information bits Unified storage, transmission, processing EL536: Principles of Communication Networks Kang Xi, Polytechnic University 7 Benefit of Digitization 1 Processing: VLSI Modulation Mass production Integration Reliable EL536: Principles of Communication Networks Kang Xi, Polytechnic University 8 Benefit of Digitization 2 Robust to noise 1 0 1 EL536: Principles of Communication Networks Kang Xi, Polytechnic University 9 Benefit of Digitization 3 Multiplexing EL536: Principles of Communication Networks Kang Xi, Polytechnic University 10 Benefit of Digitization 4 Integration EL536: Principles of Communication Networks Kang Xi, Polytechnic University 11 Benefit of Digitization 5 Encryption Frequency Components of a Signal EL536: Principles of Communication Networks Kang Xi, Polytechnic University 12 EL536: Principles of Communication Networks Kang Xi, Polytechnic University 13 Time & Frequency 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1-8-6-4-2 2 4 6 8 5sin (2 4t) Amplitude = 5 Frequency = 4 Hz seconds EL536: Principles of Communication Networks...
View Full Document

Page1 / 44

physical1 - 1 Physical Layer 1 Transmission, Media...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online