Power-minimized bit allocation for video communication over wireless channels

2002 ◽  
Vol 12 (6) ◽  
pp. 398-410 ◽  
Author(s):  
Qian Zhang ◽  
Zhu Ji ◽  
Wenwu Zhu ◽  
Ya-Qin Zhang
Keyword(s):  
Wireless Channels ◽  
Video Communication ◽  
Bit Allocation

Binomial Bit-Rate Computation Model Based on Wireless Channel

2012 ◽  
Vol 241-244 ◽  
pp. 2482-2486
Author(s):  
Wei Ming Yang ◽  
Jian Zhang ◽  
Jin Xiang Peng
Keyword(s):  
Solution Method ◽  
Rate Distortion ◽  
Wireless Channel ◽  
Video Communication ◽  
Bit Allocation ◽  
Bit Rate ◽  
Computation Model ◽  
Refresh Rate ◽  
Network Bandwidth ◽  
Inter Frame

For the encoding bit-rate problem in H.264 wireless video communication, the bit-rate computation model and the standard deviation distortion model were analyzed to establish the relation between the quantization parameter of encoding bit-rate and the intra-frame refresh rate of macroblocks, a new proposal of the coding rate thus put forward based on the general binomial computation model theory. Furthermore, this method not only can adaptively adjust the bit allocation and quantization parameters to prevent buffer from overflowing downward or upward under given network bandwidth, but also can apply the rate-distortion to perfect the solution method, control the encoding bits accurately and optimize the allocation between the inter-frame encoding macroblocks.

Adaptive QoS control for real-time video communication over wireless channels

2005 ◽  
Vol 1 (1/2) ◽  
pp. 27 ◽  
Author(s):  
Dapeng Wu ◽  
Y. Thomas Hou ◽  
Wenwu Zhu ◽  
Zhihai He ◽  
Ya Qin Zhang
Keyword(s):  
Real Time ◽  
Wireless Channels ◽  
Video Communication ◽  
Qos Control ◽  
Adaptive Qos
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