其中的关键技术是PSI/SI信息的重置和码率变换时产生的PCR抖动校正。
The key methods are the updating of PSI/SI information and the correction of PCR jitter.
运动矢量的预测是视频编码技术中的一个重要组成部分，它直接关系到运动估计的精度和码率大小。
Motion Vector prediction forms a key part of video coding technique in that it directly affects the bitrate and performance of motion estimation.
结果表明，该方法在不影响图像失真度和码率性能的前提下，降低了编码时间，减小了编码复杂度；
Experimental results show that the proposed algorithm can reduce the coding time and encoder complexity while maintaining similar PSNR and bite rate ;
矩阵LDPC码不同于现有其它结构LDPC码的独特之处在于，对码长和码率参数的设计具有高度灵活性，使其能与现有标准兼容。
The Q-matrix LDPC code has high flexibility concerning design of code length and rate, which makes it compatible with the existed standard.
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。
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.
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。
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.
文章根据低码率图像编码的特点，对H。263测试模型(TMN5)的仿真程序tmn- 2.0中的量化级和码率控制策略的不足之处进行了合理的改进。
Based on the features of low coding rate video encoding, we improved the control strategy of quantization step and coding rate in the simulation program TMN - 2. 0 of H. 263 test model (TMN5).
本文提出了通过计算原始视频序列与经过非编系统编辑处理后的序列峰值信噪比(PSNR)的方法，对两种非编系统中常用的高清格式和码率的图像质量进行评价。
An evaluated method is proposed by calculating PSNR between original video sequence and video sequence through two non-linear editing systems from different HD formats and rate in the paper.
你需要低延迟的语音电话，同时还要兆比特数据流处理能力，也不想放弃方便的电视，甚至还要低误码率和高安全性的金融交易。
You need to have low delay for voice telephony, the ability to handle megabit data streams with ease for TV, and low error rates and strong security for financial transactions.
本文阐述光纤数字通信中部分响应信号的特点，和适当地设置信号电平使平均误码率达到最小的方法。
This paper describes the signal characteristic in optical fiber communication systems, and the way to set the signal levels appropriately for the minimum average error rate.
介绍了相应的关键帧技术和动态多码率技术，以及在终端上实现无线流媒体业务的整个流程。
This article introduces related key-frame and dynamic multi-code-rate technologies and shows the whole procedure to implement wireless streaming media service.
由于无线信道的高误码率和突发错误的特性，在无线at M中必须使用有效的差错控制机制。
In wireless ATM network, an efficient error control mechanism has to be used because of the high bit error rate and burst nature of bit errors.
文中论述了装定区的选择、提出了装定窗口的概念，并对系统精度和误码率进行了分析和初步研究。
The dissertation discusses the choosing of the setting area and gives the concept of the setting window, and analyzes and researches the system precision and the rate of error code.
实验结果表明该算法在低码率下，相比jpeg，获得了在视觉效果和峰值信噪比方面更好的恢复图像质量。
Experiment results show that in low bit rate environment, the new image compression scheme performs better than JPEG in the aspects of perception and PSNR (Peak Signal Noise Ratio).
仿真结果也表明，这种方法能在比特误码率和码长之间取得一个较好的平衡，而且，编码图像能得到很好的抗噪声性能。
The simulation results also show that the method can get better balance between bit error rate and code length, and the image can get better anti-noise property.
为了解决无线上网中误码率较高和传输延迟大的问题，需要有一种用于改善有线和无线链路的综合性技术。
To solve the problems of high BER and large transmission delay in wireless Internet, there should be a comprehensive technology to improve wireline and wireless link.
该算法解决标准中原算法码率分配过于平均和不能充分利用已编码帧历史信息的问题。
The method resolves problems in the standard method when the bit allocation is too uniform and the encoded frame history information is omitted.
模拟结果表明，该方法比一般的载波干扰比功率控制方法性能更优，可获得更低的误码率和更高的信道容量。
Compared with conventional power control method utilizing carrier to interference ratio, the simulation results show that it can achieve lower bit error ratio and higher channel capacity.
与标准的率失真(PCRD)优化算法相比，该算法不会在计算码率失真斜率和搜索最优分层截断点时产生运算开销。
Compared with the standard post-coding rate distortion (PCRD) algorithm, the proposed algorithm has no spending in calculating rate-distortion slope and searching for optimum truncation points.
频域差分检测的误码率性能同时受到信道相干时间和相干带宽变化的影响，并且相干带宽对频域差分检测的影响更大。
The BER performance of FDDD is affected by the channel coherent bandwidth and coherent time at the same time, and it is more sensitive to the change of channel coherent bandwidth.
利用该方法良好的收敛性，可以借助于电子计算机快速的构造目前已知的具有最大码率和最小解码时延的多天线复正交空时分组编码矩阵。
By the convergence of the method, we can fast construct a COSTBC matrix with the maximal rates and the minimal decoding delays that we all know now recur to the computer.
相信所做的这些工作对甚低码率视频图像编码的实际应用和推广将起到推动作用。
Therefore what has been studied should be a promotion to make very low bit rate video coding work in practice and in wide use.
本文采用自适应重要性采样(IS)方法，推导得出由波长路由器件和光接收机构成的WDM系统模型的串扰和误码率。
In this paper, adaptive importance sampling (is) techniques is used to estimate the crosstalk and the BER of the WDM system model consisting of wavelength routing device and optical receiver.
数值分析结果表明，该方案在单天线RAKE分集基础上进一步增强多径分集效果，能较大地改善误码率性能和提高系统的抗衰落能力。
Results of the performance analysis show this scheme provides more benefit of diversity to overcome fading than the conventional single antenna RAKE receiver, and so gets better BER performance.
时变信道以及信道冲激响应超过CP会带来子信道间干扰（ICI）和残留码间干扰（ISI），产生误码率平台。
The interchannel interference(ICI) and the residual intersymbol interference(ISI) could be introduced by time varying channel with channel impulse response that exceeds the length of CP.
水情自动测报系统的畅通率是遥测通信网误码率和系统可靠性指标的混合体。
The normal operation rate of an automatic hydrological forecast system is a combination of BLER of transmission channels and system reliability.
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.
在数字移动通信信道模型上，利用计算机模拟，在均方误差和误码率特性方面与其它均衡器算法进行了比较。
On a digital mobile radio channel model, using computer simulation, we compare the SWFTF DFE algorithm with other equalizer algorithms in the characteristics of mean squared error and bit error rate.
给出了一种结合码字预分配和直接缓冲器控制的码率控制方法。
In this paper a rate control method is studied that combines pre-distribution of bits with direct buffer control.
实验结果表明该编码器可实现高分辨率视频的实时编码，且具有较低的码率和较好的图像质量。
The finished encoder can compress high resolution video in real time, with low bit rate and high image quality.
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