Digital Modulation Techniques

First considers the three basic forms of digital modulation: amplitude-shift-keying, frequency-shift keying, and phase-shift keying Compares binary modulation systems, in terms of power efficiency and spectrum efficiency Explains the principle of quadrature modulation used with M-ary PSK Describes three modulation techniques that offer certain advantages for band-limited, nonlinear channels: offset quadrature phase-shift keying, QPSK, and minimum-shift keying Explains how the technique of quadrature partial response increases the bandwidth efficiency of OAM signaling Describes trellis coded modulation as a combination of convolutional coding and digital modulation, and show an example in detail Shows the principles behind orthogonal frequency-division multiplexing (OFDM) Compares digital modulation techniques in terms of error performance, complexity of implementation, and all bandwidth efficiency

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