ADVANCED DATA COMMUNICATIONS notes ppt

ADVANCED DATA COMMUNICATIONS

UNIT I

DIGITAL MODULATION: Introduction, Information Capacity Bits, Bit Rate, Baud, and M-ARY Coding, ASK, FSK, PSK, QAM, BPSK, QPSK, 8PSK, 16PSK, 8QAM, 16QAM, DPSK, Methods, Band Width Efficiency, Carrier Recovery, Clock Recovery.

UNIT II&III

BASIC CONCEPTS OF DATA COMMUNICATIONS, INTERFACES AND MODEMS: Data Communication, Components, Networks, Distributed Processing, Network Criteria- Applications, Protocols and Standards, Standards Organizations, Regulatory Agencies, Line Configuration- Point-to-point- Multipoint, Topology, Mesh, Star, Tree, Bus, Ring, Hybrid Topologies, Transmission Modes, Simplex, Half duplex- Full Duplex, Categories of Networks- LAN, MAN, WAN and Internetworking, Digital Data Transmission- Parallel and Serial, DTE- DCE Interface- Data Terminal Equipment, Data Circuit- Terminating Equipment, Standards EIA 232 Interface, Other Interface Standards, Modems- Transmission Rates.

UNIT IV

ERROR DETECTION AND CORRECTION: Types of Errors- Single- Bit Error, CRC (Cyclic Redundancy Check), Performance, Checksum, Error Correction- Single-Bit Error Correction, Hamming Code.

UNIT V

DATA LINK CONTROL: Stop and Wait, Sliding Window Protocols.

DATA LINK PROTOCOLS: Asynchronous Protocols, Synchronous Protocols, Character Oriented Protocol- Binary Synchronous Communication (BSC) - BSC Frames- Data Transparency, Bit Oriented Protocols, HDLC, Link Access Protocols.

UNIT VI

SWITCHING: Circuit Switching- Space Division Switches- Time Division Switches, TDM Bus, Space and Time Division Switching Combinations, Public Switched Telephone Network, Packet Switching- Datagram Approach- Virtual Circuit Approach, Circuit Switched Connection Versus Virtual Circuit Connection, Message Switching.

MULTIPLEXING: Time Division Multiplexing (TDM), Synchronous Time Division Multiplexing, Digital Hierarchy, Statistical Time Division Multiplexing.

UNIT VII&VIII

UNIT VII&VIII

MULTIPLE ACCESS: Random Access, Aloha- Carrier Sense Multiple Access (CSMA)- Carrier Sense Multiple Access with Collision Detection (CSMA)- Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA), Controlled Access- Reservation- Polling- Token Passing, Channelization- Frequency- Division Multiple Access (FDMA), Time - Division Multiple Access (TDMA), - Code - Division Multiple Access (CDMA).

http://www.site.uottawa.ca/~awilliam/seg3255_w08/Notes/Notes07-MultipleAccess.ppt

http://www.cs.uiuc.edu/class/fa06/cs438/slides/CS438-06.MAC.ppt

TEXT BOOKS:

1.  B. A.Forouzan, “Data Communication and Computer Networking”, 3^rd ed., TMH, 2008.

2.  W. Tomasi, “Advanced Electronic Communication Systems”, 5 ed., PEI2008.                

REFERENCES:

1.  Prakash C. Gupta, “Data Communications and Computer Networks”, PHI, 2006.

2.  William Stallings, “Data and Computer Communications”, 8^th ed., PHI 2007.

3.  T. Housely, “Data Communication and Tele Processing Systems”, 2nd Edition, BSP, 2008.

4.  Brijendra Singh, “Data Communications and Computer Networks”, 2^nd ed., PHI 2005.