Wireless video graphics array system design

A novel system design to accommodate wireless computer video (WVGA) is presented. A simple, yet efficient variable threshold frame differencing scheme is developed in this paper that allows lossless computer video compression ratio's up to 100%, depending on what occurs on the screen. Using thi...

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Bibliographic Details
Published in3rd Annual Communication Networks and Services Research Conference (CNSR'05) pp. 163 - 166
Main Authors Sampson, A., Chen, Z.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Bit rate
compression
Computational modeling
Computer displays
Computer graphics
decompression
dual-port ram
Image coding
Image resolution
Laboratories
OFDM
Streaming media
Video compression
Wireless computer video
Wireless Video Graphics Array
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Summary:A novel system design to accommodate wireless computer video (WVGA) is presented. A simple, yet efficient variable threshold frame differencing scheme is developed in this paper that allows lossless computer video compression ratio's up to 100%, depending on what occurs on the screen. Using this scheme, only the differences between frames are sent through the channel. The compressed video stream still requires a very high speed wireless link. A 360 Mbps wireless OFDM link is simulated to cover a distance of 6 m in an indoor environment. The high bit rate comes at the expense of using 1/2 of the unlicensed band from 5.15-5.35 GHz (lower UNII band) per user. There is a resulting user count of 2 per 6 meter cell. However, the data rate allows a user to play full screen video files. The scheme can be modified to accommodate a higher density network of users who spend a lot of time surfing the Internet or word processing and who are not interested in viewing full screen video files all of the time.
ISBN:0769523331
9780769523330
DOI:10.1109/CNSR.2005.62