Digital Communication Systems

Index

(10, 3, 5) LDPC codes, 669–671

2B1Q code, 331–332

A

Adaptive DM, 308

Adaptive equalization

decision-feedback equalization, 473–474

equalizer operation, 472–473

introduction, 469–470

LMS (least-mean-square) algorithm, 470–472

Additive noise, parameter estimation,124 –125

Alamouti code

receiver considerations, 542–545

space diversity-on-transmit receive systems, fading channels, 540–541

Aliasing, 272–273

Autocorrelation function

bound on the autocorrelation function property, 151

cross-correlation functions, 155–157

mean-square value property, 151

normalization property, 152

overview, 149–157

physical significance of, 152–155

properties of, 151–152

quadrature-modulated processes, 156–157

random binary wave, 154–155

sinusoidal wave with random phase, 152

symmetry property, 151

Autocovariance function, weakly

stationary stochastic processing, 149–157

AWGN channel signaling

BER comparison of signaling schemes, 415–418

capacity, band-limited channels, 477–478

introduction, 323–324

noncoherent orthogonal modulation, 404–410

AWGN channel signaling, coherent detection. See also DPSK (differential phase-shift keying); FSK (frequency-shift keying); PSK (phase-shift keying).

correlation receiver, 341–342

matched filter receiver, 342–343

maximum likelihood decoding, 337–341

AWGN channel signaling, detecting signals of unknown phase

equivalent forms of the quadratic receiver, 402–404

introduction, 400

optimum quadratic receiver, 400–402

AWGN channel signaling, geometric representation ...