平均码率

在MPEG-2编解码器上的实验结果表明，该算法在保持视频平均码率和客观质量几乎不变的情况下可以有效地消除环效应，提高视频主观质量。

The experimental results on an MPEG-2 codec show that the algorithm efficiently reduces the ringing effect and improves video subjective quality while keeping the video average bitrate and video objective quality almost unchanged .

增强型可变速率编解码器EVRC以其较高的合成语音质量和较低的平均码率成为目前应用范围广泛的变速率语音编码技术之一。

Enhanced Variable Rate Codec ( EVRC ) is one of the most applied variable rate speech coding technologies .

实验结果表明，与平均码率分配算法相比，该算法可以显著降低视频图像中人眼感兴趣区域重建质量的波动。

The experimental results show that , compared with the conventional average rate allocation algorithm , the proposed algorithm can significantly eliminate the quality fluctuation of ROI .

OFDM系统中基于最小平均误码率的自适应预处理算法的研究

The Adaptive Algorithm Based on Minimum Average BER Criterion in OFDM System

在平坦瑞利衰落下，分别导出了这些系统再生和非再生中继时的BPSK平均误码率。

The multi-hop and multi-route diversity systems . Their expressions of average BER for BPSK of non-regenerative relaying and regenerative relaying are derived in flat Rayleigh fading channel respectively .

一种协作网络编码方案的平均误码率分析

Average BER Analysis of Cooperative Network Coding Scheme

本文分析了非自适应系统和采用典型算法的自适应系统的信息传送的平均误码率。

Explicit expressions are obtained for average probability of errors in information transfer intervals for the radio communication systems and the adaptive radio communication systems with representative arithmetic .

在瑞利衰落信道下，分别导出了这2种模型解码中继和放大中继的平均误码率和中断率。

Expressions for outage probability and average bit error rate ( BER ) of decoded relaying and amplified relaying systems were derived over Rayleigh fading channel , respectively .

采用矩空间理论和高斯近似法分别得出该系统在多址干扰和白高斯噪声条件下的平均误码率表达式。

Based on moment space theory and Gaussian approximation method , expressions of average error probability for system with multiple-access interference and white Gaussian noise environment are derived .

该算法以宏块为单位，采用帧间递归，根据编码过程中提取的码流信息和信道平均误码率，在发送端估算接收端视频的重建失真。

The method that can estimate the reconstructed video quanlity at the receiver recursively from one frame to another according to average bit error rates of channel and bitstream information extracted during coding process .

在语音通信中，60%甚至更多的时间内只有背景噪声存在。为了降低平均传输码率，节省信道资源，对于背景噪声信号通常使用静音压缩编码。

In normal voice communication , 60 % or more of the time there is only background noise , introducing silence compression coding to background noise can reduce the average transmission bit rate and save channel resources .

该系统接收端采用相干解调的分集接收机，分析由于高斯噪声干扰引起的相位误差，用户个数，跳频点个数与系统误码率性能之间的数值关系，并给出系统的平均误码率表达式。

The diversity receiver is applied in the system to analyze the parameter relationship among the phase error , the number of user , the number of FH and phase error which resulted from the Gaussian noise . And the theoretical average BER is presented .

实验结果表明，算法在不降低图像质量的基础上，编码速度平均提高76%，码率平均增加2.6%。

Experimental results show that with similar distortion performance , the algorithm that adopt the above three strategy can efficiently reduce the computational complexity up to 76 % with 2.6 % increase of bits rate averagely .