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ADVANCED DIGITAL COMMUNICATIONS

Digital Modulation Techniques: QPSK, DPSK, FQPSK, QAM, M-QAM, OFDM, Optimum Receiver for
Signals Corrupted by AWGN, Performance of the Optimum Receiver for Memory-less Modulation, Optimum
Receiver for CPM Signals, Optimum Receiver for Signals with Random Phase in AWGN Channel.

Coding Techniques: Convolutional Codes, Hamming Distance Measures for Convolutional Codes; Various
Good Codes, Maximum Likelihood Decoding of Convolutional codes, Error Probability with Maximum
Likelihood Decoding of Convolutional Codes, Sequential Decoding and Feedback Decoding, Trellis Coding
with Expanded Signal Sets for Band-limited Channels, Viterbi decoding.


Communication through band limited linear filter channels: Optimum receiver for channels with ISI and
AWGN, Linear equalization, Decision-feedback equalization, reduced complexity ML detectors, Iterative
equalization and decoding-Turbo equalization.

Adaptive Equalization: Adaptive linear equalizer, adaptive decision feedback equalizer, adaptive equalization
of Trellis- coded signals, Recursive least squares algorithms for adaptive equalization, self recovering (blind)
equalization.

Spread Spectrum Signals for Digital Communication: Model of Spread Spectrum Digital Communication
System, Direct Sequence Spread Spectrum Signals, Frequency-Hopped Spread Spectrum Signals, CDMA, timehopping SS, Synchronization of SS systems. Digital Communication Through Fading Multi-Path Channels: Characterization of fading multi-path

channels, the effect of signal characteristics on the choice of a channel model, frequency-Nonselective, slowly
fading channel, diversity techniques for fading multi-path channels, Digital signal over a frequency-selective,
slowly fading channel, coded wave forms for fading channels, multiple antenna systems.

REFERENCE BOOKS:
1. John G. Proakis, ―Digital Communications‖, 4
th
edition, McGraw Hill, 2001.
2. Stephen G. Wilson, ―Digital Modulation and Coding”, Pearson Education (Asia) Pte. Ltd, 2003.
3. Kamilo Feher, ―Wireless Digital Communications: Modulation and Spread Spectrum
Applications‖, Prentice-Hall of India, 2004.
4. Andrew J. Viterbi, ―CDMA: Principles of Spread Spectrum Communications‖, Prentice Hall, USA,
1995.
Reference URL's