DS4101 Modern Communication Systems Syllabus:
DS4101 Modern Communication Systems Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES:
To describe the basics of spread spectrum communications.
To compare different Equalizers
To describe different block coded and convolutional coded Communication systems.
To perceive the basics of OFDM and MIMO systems
UNIT I SPREAD SPECTRUM COMMUNICATIONS
Spreading sequences- Properties of Spreading Sequences, Pseudo- noise sequence, Gold sequences, Kasami sequences, Walsh Sequences, Orthogonal Variable Spreading Factor Sequences, Barker Sequence, Complementary Codes Direct sequence spread spectrum: DSCDMA Model, Conventional receiver, Rake Receiver, Synchronization in CDMA, Power Control, Soft handoff, Multiuser detection – Optimum multiuser detector, Linear multiuser detection.
UNIT II EQUALIZATION TECHNIQUES
Band Limited Channels- ISI – Nyquist Criterion- Controlled ISI-Partial Response signals Equalization algorithms – Viterbi Algorithm – Linear equalizer – Decision feedback equalization – Adaptive Equalization algorithms.
UNIT III BLOCK AND CONVOLUTIONAL CODED COMMUNICATION
Linear block codes; Hamming; Golay; Cyclic; BCH ; Reed – Solomon codes. Space time block codes. Representation of codes using Polynomial, State diagram, Tree diagram, and Trellis diagram –Decoding techniques using Maximum likelihood, Viterbi algorithm, Sequential and Threshold methods – Error probability performance for BPSK and Viterbi algorithm, Turbo Coding.
UNIT IV ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING
Basic Principles of Orthogonality, Single vs Multicarrier Systems, OFDM Block Diagram and Its Explanation, Mathematical Representation of OFDM Signal, Modulation parameters , Pulse shaping in OFDM Signal and Spectral Efficiency, Window in OFDM Signal and Spectrum, Synchronization in OFDM, Pilot Insertion in OFDM, Transmission and Channel Estimation, Amplitude Limitations in OFDM, FFT Point Selection, Constraints in OFDM, CDMA vs OFDM, Hybrid OFDM.
UNIT V MIMO SYSTEMS
Space Diversity and System Based on Space Diversity, Smart Antenna system and MIMO, MIMO Based System Architecture, MIMO Exploits Multipath, Space – Time Processing, Antenna Consideration for MIMO, MIMO Channel Modeling and Measurement, MIMO Channel Capacity, Cyclic Delay Diversity (CDD), Space Time Coding, MIMO Applications in 3G Wireless System and Beyond, MIMO-OFDM
COURSE OUTCOMES:
On Successful completion, students will be able to
CO1: Describe the concepts of spread spectrum communications
CO2: Apply appropriate equalization technique for the given problem
CO3: Analyze the performance of different block codes and convolutional codes.
CO4: Generate OFDM signals and analyze its performance
CO5: Describe MIMO systems
TOTAL:45 PERIODS
REFERENCES:
1. Ke-Lin Du & M N S Swamy, “Wireless Communication System: From RF Subsystems to 4G Enabling Technologies”, Cambridge University, Press, 2010.
2. John G. Proakis, “Digital Communication”, Fifth Edition, McGraw Hill Publication, 2008
3. M.K.Simon, S.M.Hinedi and W.C.Lindsey, “Digital communication techniques; Signal Design and Detection”, Prentice Hall of India, New Delhi, 1995.
4. Hermann Rohling, “OFDM: Concepts for Future Communication Systems”, Springer 2011.
5. Ezio Biglieri , Robert Calderbank , Anthony Constantinides , Andrea Goldsmith Arogyaswami Paulraj , H. Vincent Poor, “ MIMO Wireless Communications” Cambridge University Press, April 2010.
6. Robert W. Heath Jr.; A. Lozano, Foundations of MIMO Communication, Cambridge University Press, 2019.