QCELP, see Qualcomm code excited linear prediction
QDU, see Quantization distortion unit
QoS, see Quality-of-service
QPSK, see Quadrature phase shift keying
QRS detection program, 525
Quadrature phase shift keying (QPSK), 399
Qualcomm, 13, 60, 446
Binary Runtime Environment for Wireless (BREW), 441
code excited linear prediction (QCELP), 155
OmniTRACS product, 412
vehicle location and monitoring service, 450
Quality of service (QoS), 38, 130, 242, 470
algorithms, 28
better application, 474
classes, 78
control, 471
data transport with, 393
domain, tunneling across, 212
end-to-end, 90
error resilience and, 404
expectations, 208
guarantees, 215, 382, 415
information, RTCP and, 491
management, 150, 163
parameters, 110, 215
profile
attributes, 91
E-GPRS, 85
GPRS, 85, 86
streaming media, 99
receiver signal, 130
reports, 80, 473, 493
requirements, 86, 116, 119
signaling, 481
support, 214, 215
user perception of, 375
video, 485
Quantization distortion unit (QDU), 156
Quasihierarchical clustering, shortcoming of, 145
Quasihierarchical routing, 142
Query-update access patterns, 369
QWERTY keyboard, 188