Wireless data technologies reference handbook phần 1 potx

... 10 8 5.2 .1 Test Sequences 10 8 5.2.2 Subjective Experiments 10 9 5.2.3 Prediction Performance 11 1 5.2.4 Discussion 11 5 5.3 Component Analysis 11 7 5.3 .1 Dissecting the PDM 11 7 5.3.2 Color Space 11 8 5.3.3 ... Sequences 12 7 6 .1. 3 Subjective Experiments 12 8 6 .1. 4 Prediction Performance 12 9 6.2 Object Segmentation 12 9 6.2 .1 Test Sequences 13 1 6.2.2 Prediction Perfo...

Ngày tải lên: 09/08/2014, 19:21

... alphabet soup of 802 .11 standards. 8.5 .1. 1 802 .11 b 802 .11 b is the most popular wireless LAN standard. It operates in the unlicensed 2.4-GHz band and provides up to 11 Mbps of data. The data rate is dynamically negotiable ... 802 .11 a is lower than 802 .11 b, but it does have an advantage over 802 .11 b in terms of speed and capacity. 8.5 .1. 3 802 .11 g 802 .11 g is the high-spe...

Ngày tải lên: 09/08/2014, 19:22

... multiframes 47 5 52-multiframe 47 8 802 .11 81 802 .11 a 81 802 .11 b 81 802 .15 10 2 802 .16 15 8 802.3 81 A access grant channel (AGCH) 43 AiroPeek 14 1 AirSnort 14 2 AJ Anti-Jam 9 ALOHANET 5 AMPS Advanced ... INDEX WEP 19 5 Wired Equivalent Privacy 3 WEPcrack 14 2 WinDump 14 1 W-INFOSEC 18 7, 18 8, 19 0, 19 2, 19 4, 19 6, 19 8, 200, 202, 204 Wired Equivalent Privacy, see...

Ngày tải lên: 09/08/2014, 19:21

... QUALITY 10 2 10 1 10 0 10 1 10 1 10 1 10 0 10 1 10 1 10 0 10 1 10 0 10 1 10 1 10 0 10 1 10 –2 Spatial frequency [cpd] Temporal frequency [Hz] (a) Achromatic CSF (b) Chromatic CSF Contrast sensitivity 10 2 10 1 10 0 10 1 10 –2 Contrast ... band-pass mechanisms have been discovered (Foster et al., 19 85), 10 0 10 1 10 2 10 –2 10 1 10 0 Temporal...

Ngày tải lên: 09/08/2014, 19:21

... equation (4 .11 ). The PLog wavelet is defined as follows:  ð ~ xxÞ¼ 1  ~  ~ xx ffiffiffi  p  ; ð4 :15 Þ where ~  ðx; yÞ¼ ð 1  2  1 ð 1 ! @ 2 @x 2 þ @ 2 @y 2   e À x 2 þy 2 2 : ð4 :16 Þ The ... correlation better –2 0 2 4 6 0.5 0.6 0.7 0.8 0.9 1 1 .1 1.2 1. 3 1. 4 Offset Slope (a) Correlations (b) Linear regresssion parameters Figure 3 .11 Inter-lab DMOS correlations (a)...

Ngày tải lên: 09/08/2014, 19:21

... Filter weights Level 0 1 2 3 4 W-B, LP 5.0 19 .2 13 9.5 478.6 496.5 W-B, BP 11 2.8 14 1.0 17 9.4 205.7 12 0.0 R-G, LP 15 4.2 354.0 404.0 18 4.6 27.0 B-Y, LP 12 5.6 332.7 3 81. 4 13 1.5 28.6 PERCEPTUAL DISTORTION ... parameters bk pq W-B 6.968 0.29778 2 .11 58 2 R-G 21. 904 0 .11 379 2.3447 2 B-Y 13 .035 0.07 712 2.2788 2 98 MODELS AND METRICS 10 1 10 0 10 1 –45 –40 –35 –30...

Ngày tải lên: 09/08/2014, 19:21

... images, Figure 5 .1 Original test image and two examples of distorted versions. Table 5 .1 Coding noise components and signs for all 20 test conditions 12 345678 910 111 213 1 415 1 617 1 819 20 Y þ þ þ þþþ ... Mb/s 11 MPEG-2 3 Mb/s Transmission errors 12 MPEG-2 4.5 Mb/s Transmission errors 13 MPEG-2 2 Mb/s 3/4 resolution 14 MPEG-2 2 Mb/s 3/4 horizontal resolution 15 H.263 768 kb/s 1...

Ngày tải lên: 09/08/2014, 19:21

... 9 Condition DMOS 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 0 10 20 30 40 50 60 70 80 Condition 1 Condition ... 12 7 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 7 8 1 2 3 4 5...

Ngày tải lên: 09/08/2014, 19:21