Index 2G wireless system, see GSM AACF (Aperiodic Autocorrelation Functions), 173­175 Access networks, 476, 550, 551, 552, 557 ACF (Autocorrelation Functions), 302 ACK (Acknowledgement channel), 532, 533, 541­547, 587, 590, 593, 595 Acknowledgement channel, see ACK Acquisition Indicator Channel, see AICH Adaptation algorithm, 397 Adaptive data scheduler, 534 Adaptive Differential Pulse Code Modulation, see APCM Adaptive linear equalizer, 87 Adaptive receivers, 371 directed, 375 fractionally spaced, 374­381, 397 linear, 373, 374 AWGN (Additive White Gaussian Noise), 4, 48, 55, 61, 75, 86, 105­107, 113, 118, 132­136, 146­158, 258­272, 282­295, 299, 311­317, 325, 359, 367, 369, 370, 434 Background noise, 4, 159, 163, 365, 388, 397, 423, 438, 463, 534 Baker sequence, 247 Basic Algebra concepts, 196­198 Basic FH modulator, 166 Bayes, 61, 62, 256, 405 BCMCS (Broadcast and Multicast Service), 548, 550 Beam forming techniques, 437­442 Bessel function, 10, 14, 270 Binary Gold codes, 226 Binary modulator, 164 Binary Phase Shift Key, see BPSK Binary polynomial, 198 Binary pseudo-random sequences, 203­226