A fast block matching motion estimation algorithm for low bit rate video coding is proposed.
提出一个用于低比特率视频编码的快速块匹配运动估计算法。
A kind of robust pitch estimation algorithm is presented for parametric speech coding with transparent quality at very low bit rate.
为了实现甚低码率下的透明质量语音编码，提出了一种基音周期估计算法。
This letter mainly deals with the base of adaptive modulating technique: Channel estimation technology and the signal to noise ratio vs. error bit rate performance of MQAM.
本文主要研究自适应调制技术的基础：信道估计技术、MQAM信噪比误比特率性能。
Motion Vector Refinement: Bit rate adaptation transcoding adapt the network heterogeneity, which makes the reference frame changed. The motion estimation is needed.
运动矢量修正技术：码率调整型转码算法可以屏蔽网络的异构性，但导致参考帧数据发生变化，需要重新进行运动估计。
Experimental results show that our algorithm can reduce the computational-complexity to 3% of fast full search motion estimation algorithm, with negligible PSNR loss and bit rate increase.
试验结果证明，该算法能够将计算复杂度降低到快速全搜索运动估计算法的3%，而PSNR和码率几乎与快速全搜索算法得到的结果相当。
Theoretical results of the lower bound of the bit error rate as well as the channel estimation error of the proposed algorithm were given.
从理论上分析了该算法所能达到的信道估计误差下限和比特误码率下限，并提出了最优叠加导频序列的设计准则。
This paper research the MPEG-4 standard and realize the software prototype of the MPEG-4 video codec. The paper emphasize two key techniques in MPEG-4 encoder: Motion Estimation and Bit Rate Control.
本论文研究了MPEG - 4标准，在实现MPEG - 4视频编解码器软件原型的基础上，重点研究了编码过程中的两项关键技术：运动估计和码率控制。
By simulating the modulation process using MATLAB, the influence of different power spectrum estimation algorithm to the bit-error-rate performance of the demodulation technique is analyzed.
通过Matlab仿真了调制解调过程，分析了三种功率谱估计算法对解调误码性能的影响。
By simulating the modulation process using MATLAB, the influence of different power spectrum estimation algorithm to the bit-error-rate performance of the demodulation technique is analyzed.
通过Matlab仿真了调制解调过程，分析了三种功率谱估计算法对解调误码性能的影响。
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