code EC422
credit_hours 3
title Introduction to Digital Communications
arbic title
prequisites EC421M
credit hours 3
Description/Outcomes Sampling theory and its practical aspects. PAM, Time division multiplexing, TDM-PAM, PWM, and PPM generation and detection. Cross talk and channel bandwidth requirements, PCM generation and detection. Quantization noise, A-law, -law compressors. Delta modulation generation and detection. ADM, DPCM, Probability of error in transmission, Matched filter and autocorrelators . Power spectral density of some famous formats.
arabic Description/Outcomes
objectives Students will be familiar with a different pass-band digital modulation systems taking the effect of noise into consideration.Students will identify the probability of error, bit error rate, spectral properties.Students will design and realize the transmitter and receiver of a specific digital communication system.rn
arabic objectives
ref. books
arabic ref. books
textbook A.Bruce Carlson “Communication Systems” McGraw –Hill.rnSimon Haykin, "Digital Communication systems" John Wiley and Sons.rn
arabic textbook
objective set
content set
Course Content
content serial Description
1 Introduction to Pass band Modulation Techniques, Tx and Rx system, Signal Space (SS) techniques. Orthogonal bases s. Geometric representation of signals.
2 Distance, Correlation, Orthogonality. Relation to Matched filter theory. Gram-Schmidt orthogonalization procedure.
3 Decision rules, Decision boundaries, Decision regions. MAP and ML estimation. Bank of matched filters receivers.
4 Probability of error calculations in presence of AWGN. Basic Bandpass modulation techniques, ASK, BPSK, and BFSK. SS representation. Time and frequency expressions Coherent detection of ASK, OOK, BPSK, BFSK signals in presence of noise.rn
5 BPSK, BFSK generation and detectionrnPower Spectral Density (PSD) and Spectral efficiencies for ASK, BPSk, BFSK.rn
6 QPSK: SS-PSD-Spectral Effiency, Generation of QPSK. OQPSK and π/4 QPSK.
7 Optimum FSK, MSK: Analysis, relation to OQPSK, generation, detection. GMSK.
8 M-ary Modulation Techniques: M-ary ASK, M-ary PSK.
9 Union Bound. Error performance of M-ary modulation.
10 Non-Coherent Detection. Rayleigh and Rice distributions.
11 Optimum NC detection. NC Matched filter.rnComparison of digital modulation techniques.rn
12 M-ary Modulation Techniques: M-ary FSK, QAM.
13 NC-FSK – DPSK generation, detection and Error performance.
14 Revision
15 Revision
16 Final Exam