Title :
End-to-end power-optimized video communication over wireless channels
Author :
Ji, Zhu ; Zhang, Qian ; Zhu, Wenwu ; Zhang, Ya-Qin
Author_Institution :
Microsoft Res. China, Beijing, China
Abstract :
Video communication over a wireless link is a very challenging task due to the time-varying characteristics of the wireless channel and limited battery resources in the handheld devices. This paper proposes an end-to-end power-optimized approach for video communication. The power consumed in complexity-reconfigurable source coding, channel-adaptive unequal error protection (UEP), and video transmission is analyzed. Power-minimized rate allocation is presented to achieve the minimal power consumption in the mobile host while maintaining the desired video quality. Simulation results show that our power-optimized scheme achieves significant power saving compared to the existing scheme
Keywords :
error correction codes; minimisation; mobile radio; multimedia communication; packet radio networks; power consumption; source coding; time-varying channels; video coding; visual communication; channel-adaptive UEP; complexity-reconfigurable source coding; end-to-end power optimization; multimedia communication; power consumption; power-minimized rate allocation; time-varying channel; unequal error protection; video communication; video quality; video transmission; wireless link; Batteries; Channel coding; Energy consumption; Error correction codes; Mobile communication; Power system protection; Quality of service; Source coding; Video compression; Wireless communication;
Conference_Titel :
Multimedia Signal Processing, 2001 IEEE Fourth Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-7025-2
DOI :
10.1109/MMSP.2001.962774
