| 无线显示适配器码率控制算法与FPGA实现 |
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| 引用本文： | 邓学正,杨大利,侯凌燕.无线显示适配器码率控制算法与FPGA实现[J].北京机械工业学院学报,2011,26(1):78-83. |
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| 作者姓名： | 邓学正 杨大利 侯凌燕 |
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| 作者单位： | 北京信息科技大学,计算机学院,北京,100192 |
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| 基金项目： | 北京市属市管高等学校人才强教计划资助项目 |
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| 摘 要： | 对无线视频数据流的码率可变性、无线信道的高误码率引起的传输问题，提出了一种基于H．264码率控制技术草案JVT—H017的信道信源联合码率控制算法；结合无线信道状态和图像复杂度的预测，建立了有效的码率控制模型；在实际应用中，依靠降低计算复杂度，保证了实时性传输，同时保证一定的视频质量，实现帧层和宏块层的控制，并完成了算法的FPGA硬件设计。实验结果显示，在工作主频28．1MHz下，消耗逻辑门数约为4．8万门，可实时控制编码器编码，用于无线显示适配器。
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| 关 键 词： | 无线视频传输 码率控制 现场可编程门阵列 |
Rate control algorithm design for wireless display adapter and FPGA implementation |
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| DENG Xue-zheng,YANG Da-li,HOU Ling-yan.Rate control algorithm design for wireless display adapter and FPGA implementation[J].Journal of Beijing Institute of Machinery,2011,26(1):78-83. |
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| Authors: | DENG Xue-zheng YANG Da-li HOU Ling-yan |
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| Affiliation: | DENG Xue-zheng,YANG Da-li,HOU Ling-yan(School of Computer Science,Beijing Information Science and Technology University,Beijing 100192,China) |
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| Abstract: | To solve the transmission problem about bit rate variability of the wireless video streaming and the high bit error rate of wireless channel,a joint source-channel rate control algorithm based on the draft of H.264 JVT-H017 is proposed.Combined with the wireless channel state and the image complexity forecast,the rate control model is established.In practice,the computation complexity is reduced to guarantee the timely transmission,the video quality,and realize the control of frame level and macro-block lev... |
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| Keywords: | wireless video transmission rate control FPGA |
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