Modern Digital Modulation Techniques
Digital Modulation and Multiple Access discussed in the course include topics such as adaptive modulation and coding methods, OFDM, CDMA and GMSK systems which are used in wireless, cellular and satellite communication systems. Modulation techniques for broadband wireless systems like IEEE802.11 and xDSL systems like ADSL are also discussed. Advanced topics in MIMO Systems, BLAST and CPM schemes like GMSK are also discussed. Upon the completion of this course, you will be able to evaluate the modulation techniques used in both wireline and wireless communication systems.
|Course Duration:||40 Hours|
Channel Models, Multipath channels (Rayleigh, frequency-selective fading), Mathematical Tools, Nyquist Signaling, Partial Response Signals, Differential Encoding, Intersymbol interference (ISI), Linear Equalization.
SIGNAL SPACES AND OPTIMUM DETECTION
Signal Spaces, Optimum Signal Detection, Correlators and Matched Filters.
MODULATION SCHEMES: PART 1
BPSK, BFSK, spectra, detectability, Performance over Rayleigh Fading Channel, Antenna Diversity, BLAST (MIMO), QPSK, SQPSK (IS-95, W-CDMA, MSK, SFSK, Adjacent Channel Interference, M-ary Signals, MPSK (EDGE) MFSK, QAM, (V.32, V.34 modems) CAP (ADSL, VDSL), Orthogonal signals (MFSK).
INFORMATION THEORETIC CONCEPTS
Introduction to Information Theory, Channel Capacity, Turbo Coding, Multitone Systems (ADSL, g.lite, VDSL), Examples, Discrete Multitone (DMT), ADSL Implementation, OFDM (Example: IEEE 802.11a), Trellis Coding, Viterbi Algorithm, Ungerboeck Trellis Coding, Multidimensional Trellis Coding.
TURBO-CODING AND ITERATIVE DECODING
Turbo-Coding, Iterative Decoding combined with CPM, Antenna Diversity, and Equalization.
MODULATION SCHEMES: PART 2
Continuous Phase Modulation (CPM), Gaussian MSK (GMSK), GSM, DCS, DECT, CDPD, Tamed FM (TFM), Generalized TFM (GTFM), Crosstalk Performance in CPM Signals, New CPM schemes.
NONCOHERENT AND DISCRIMINATOR DETECTION
DPSK (Optimum Detection), FSK, pi/4 - QPSK Modulation (IS-136, JDC), GMSK, TFM, GTFM, LRC signals (using the Viterbi algorithm, used in DECT, CDPD).
Duplexing (FDD, TDD), FDMA, TDMA (GSM, IS-136, GPRS), CDMA Systems (IS-95, 1xEV, IMT-2000, WCDMA Systems).
DECISION FEEDBACK EQUALIZATION - TOMLINSON FILTERING
Decision feedback equalization, Tomlinson filter, Trellis Coding & ISI.