Telecom Fundamentals
In this module, we’ll ensure you have a solid foundation in the fundamental ideas of telecom:
The elements of a circuit;
Terminals, clients, servers and peers;
How bits are represented on fiber with pulses; and
How bits are represented with modems on wireless, cable TV and DSL
Then we’ll understand how a circuit's capacity is shared to carry many users’ traffic on common facilities: Frequency Division Multiplexing, Time Division Multiplexing, and Bandwidth on Demand: efficient sharing, involving packets, routers and overbooking the network core.
Telecom Module 2
Detailed Outline
2 Telecom Fundamentals
2.1 Communication Circuit Model
...... 2.1.1 Information Theory
...... 2.1.2 ITU Model: DTEs and DCEs
2.2 Terminals, Clients, Servers and Peers
...... 2.2.1 Dumb Terminal and Remote Host
...... 2.2.2 Client-Server
...... 2.2.3 Peer-to-Peer
2.3 Representing Bits on Digital Circuits: Pulses
...... 2.3.1 Two-State Transmission Systems
...... 2.3.2 Range Limiting Factors
...... 2.3.3 Repeaters
...... 2.3.4 Comfort Noise Generation
2.4 Representing Bits in Frequency Channels: Modems
...... 2.4.1 Passband Channels
...... 2.4.2 Carrier Frequencies
...... 2.4.3 Modulation
...... 2.4.4 “Press 1 to Understand How Modems Work”
...... 2.4.5 Radio-Frequency Modems
...... 2.4.6 CDMA and OFDM
...... 2.4.7 ASK, FSK, PSK, QAM and QPSK
2.5 Serial and Parallel
...... 2.5.1 Serial Ports: USB, LAN, SATA
...... 2.5.2 Serial in Parallel for High Bit Rates
2.6 Sharing: Frequency-Division Multiplexing
...... 2.6.1 Baseband vsFrequency-Shifted
...... 2.6.2 Coax, Radio and Fiber
...... 2.6.3 Parallel
2.7 Sharing: Time-Division Multiplexing
...... 2.7.1 Synchronous TDM Channels
...... 2.7.2 Trunk Carrier Systems
...... 2.7.3 T1, SONET and SDH
...... 2.7.4 Other TDM Implementations: PONs, GSM, CAN-BUS
2.8 Efficient Sharing: Statistical Time Division Multiplexing
...... 2.8.1 Bandwidth on Demand
...... 2.8.2 Packet Switching
2.9 Overbooking: Reducing User Cost
