Wireless data technologies reference handbook phần 5 potx

... defines requirements for a PHY operating in the 5. 0 GHz U-NII frequency and data rates ranging from 6 Mbps to 54 Mbps. 98 WIRELESS DATA NETWORKS 8 .5. 1 .5 802.11h 802.11h is expected to become available ... System BInformation units 7 6 5 3 2 Header 2 Header 3 Header 4 Data Data Data Data Network 1 4 7 6 5 3 2 1 4 • • • Figure 8.2 Headers and data can be encapsulated durin...

Ngày tải lên: 09/08/2014, 19:22

... Switzerland 5. 2 Video 108 5. 2.1 Test Sequences 108 5. 2.2 Subjective Experiments 109 5. 2.3 Prediction Performance 111 5. 2.4 Discussion 1 15 5.3 Component Analysis 117 5. 3.1 Dissecting the PDM 117 5. 3.2 ... Title. TK6680 .5. W 55 20 05 006.6 0 96–dc22 200406 158 8 British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Li...

Ngày tải lên: 09/08/2014, 19:21

... front and back 2 3 4 5 6 7 8 5 10 15 20 25 30 D/H Visual angle [deg] 2 3 4 5 6 7 8 5 10 15 20 25 30 35 40 D/H Resolution [cpd] HDTV (1080 lines) HDTV (720 lines) PAL (57 6 lines) NTSC (486 ... Sections 4.2 and 5. 1 Winkler (1999b) VQ Opp. steerable pyr. W C ð’Þ L 2 ,L 4 R See Sections 4.2 and 5. 2 (VQEG) Winkler (2000) VQ various steerable pyr. W C ð’Þ various R See Sec...

Ngày tải lên: 09/08/2014, 19:21

... on the basis of the subjective data to provide a quantitative upper limit on prediction performance (VQEG, 2003). 0. 75 0.8 0. 85 0.9 0. 95 1 0. 75 0.8 0. 85 0.9 0. 95 1 Pearson linear correlation Spearman ... While it still requires the reference as input, the cognitive emulator was shown to improve the predictions of subjective SSCQE MOS data. 3 .5 METRIC EVALUATION 3 .5. 1 Per...

Ngày tải lên: 09/08/2014, 19:21

... see WAP Wireless Guru xix Wireless Local Area Networks, see WLAN Wireless Personal Area Network, see WPAN wireless technologies xix Wireless Transport Layer Security, see WTLS WLAN, see Wireless Local Area Networks WPAN ... 34 base transceiver stations, see BTS binary phase shift keying 10 Bluetooth 147, 149, 151 , 153 , 155 , 157 broadcast channels (BCH) 42 broadcast control c...

Ngày tải lên: 09/08/2014, 19:21

... wavelengths, while the B-Y channel discriminates between short and medium wavelengths. 400 450 50 0 55 0 600 650 700 –1 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 1 Wavelength [nm] Sensitivity W–B R–G B–Y Figure ... opponent colors, the so-called hue-cancel- lation experiment (Jameson and Hurvich, 1 955 ; Hurvich and Jameson, 1 957 ). In the hue-cancellation experiment, observers are able to can...

Ngày tải lên: 09/08/2014, 19:21

... good as with IIR filters. 0.1 1 10 25 0.1 1 Frequency [Hz] Filter response 0 5 10 0 0. 05 0.1 0. 15 0.2 0. 25 0.3 0. 35 0.4 Time Impulse response 0 5 10 –0.6 –0 .5 –0.4 –0.3 –0.2 –0.1 0 0.1 0.2 0.3 Time Impulse ... approximation of the temporal mechanisms. 0.1 1 10 25 0.1 1 Frequency [Hz] Filter response 0 5 10 0 0. 05 0.1 0. 15 0.2 0. 25 0.3 0. 35 Time Impulse response 0 5...

Ngày tải lên: 09/08/2014, 19:21

... section 3.3.2, perceived 10 0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 Subjective DMOS Occurrences 1 2 3 4 5 6 7 8 0 5 10 15 20 25 30 35 40 45 DMOS 95% confidence interval Occurrences (a) DMOS ... Hz Spearman rank-order correlation 0 .5 0 .55 0.6 0. 65 0.7 0. 75 0.8 0. 85 0.9 All Low Q High Q 50 Hz 60 Hz Outlier ratio (a) Accuracy (b) Monotonicity (c) Consistency Figure...

Ngày tải lên: 09/08/2014, 19:21

... times the display height. 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 PBDM prediction Subjective MOS on blocking 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 PSNR-based rating (b) PSNR-based ... ARTIFACTS 127 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6...

Ngày tải lên: 09/08/2014, 19:21

... Vision Research 22 (5) :53 1 54 4. De Valois, R. L., Albrecht, D. G., Thorell, L. G. (1982b). Spatial frequency selecitivity of cells in macaque visual cortex. Vision Research 22 (5) :54 5 55 9. D’Zmura, M. ... Journal of Physiology 186 :55 8 57 8. Campbell, F. W., Robson, J. G. (1968). Application of Fourier analysis to the visibility of gratings. Journal of Physiology 197 :55 1 56 6. Carney...

Ngày tải lên: 09/08/2014, 19:21