实验结果表明:与JM 8.6原算法比较,该算法能在提高码率控制精度的同时,提高图像的恢复质量。
The experimental results show that compared to JM8.6 original algorithm, the new algorithm can increase the accuracy of rate control and the image quality of the restoration at the same time.
在保证满分集度的前提下,尽可能提高码率,并优化时延分组数,才是多发射天线构架复信号空时分组码设计的更明智的选择。
So it is a more wise choice to increase the transmission rate and optimize the time slot block number on the condition of keeping the full diversity order in STBC design.
帧间预测是视频压缩的关键技术之一,能有效消除视频编码中的时间冗余,降低编码码率,提高编码效率。
Interframe prediction is key to video compression and can effectively eliminate the time redundancy of video coding, reduce coding rate and enhance coding efficiency.
信源编码通过压缩编码来去掉信号源中的冗余成分,以达到压缩码率,提高通信的效率,实现信号有效传输的目的。
The source coding through compression to remove the source redundancies, achieves the compression bitrate, improve communication efficiency, achieve the purpose of effective transmission signal.
为了克服移动通信带来的干扰,提高误码率,提出了软件抗干扰措施,完成了地面系统的故障信息管理。
In order to overcome the interference and reduce code error probability, we take the measure to improve it in software and convenient for the default informations management.
在视频编码中,码率控制的目的是:在满足带宽约束的条件下,提高编码图像的质量。
In video coding, the purpose of rate control is to improve picture quality while subject to the bandwidth constraint.
利用它可实现快速的单光子探测,提高量子密钥分配系统的码率,促进量子密钥分配系统的实际应用。
The single-photon prompt detection can come true for high repetition-rate pulses. The applying of this detector will largely raise the code rate of the QKD, and boost the commercial use.
提出了更新算子的优化设计,以提高低码率下视频编码的可扩展性,并取得改善的重建视频质量。
An optimized update operator in lifting implementation is proposed to improve scalability under low bit rate and the quality of reconstructed video.
但由于空时分组码受正交条件限制,传输效率得不到提高,而BLAST系统存在差错传播制约着误码率的下降。
But the data efficiency of STBC is restricted to orthogonal transmission and the bit error rate of BLAST is high due to the error propagation.
提出一种面向立体视频的比特分配与码率控制算法以提高立体视频的编码效率和码流可靠性。
A new bit-allocation and rate-control algorithm for stereo video coding was proposed to improve its coding efficiency and stream reliability.
为提高实时视频编码的图像质量,提出了一种低复杂度单通道视频编码的可变码率(VBR)控制算法。
To improve the image quality of real time video encoder, a low complexity variant bit rate (VBR) control algorithm for single-pass video encoding was proposed.
实验仿真结果显示,本文的算法在有效的控制输出码率稳定的同时,有效的提高的立体视频的立体感。
The experiment results demonstrate that the proposed scheme can improve perspective of the stereo video as well as control the stability of output rate effectively.
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.
最后引入功率配置来进一步改善系统误码率性能和提高功率效率。
Power allocation is adopted in the scheme to achieve better bit error rate (BER) performance and higher power efficiency.
实验证明,选择交织bch编码能有效地降低误码率,从而提高系统的可靠性。
At last, make some experiments, which prove the interleaved BCH code can reduce the error-correction effectively.
分析结果表明,RS纠错码能有效改善OCDMA系统的误码率性能,提高了OCDMA系统的可靠性。
Analysis result shows that RS code can improve the BER performance of OCDMA greatly, which will increase the reliability of OCDMA system.
研究发现,基于空域运动补偿小波视频编码的相关帧丢帧补偿机制可以在很大程度上降低码率,提高压缩比,改善图像在极低码率传输中的质量。
Our study finds out that the compensatory system of relevant frame throwing frame can enhance the rate of compression and improve the quality of image transmitted by the lowest code rate.
讨论仿真室内的红外漫射通信系统,并观测在提高系统传输码率情况下无线红外室内通信系统的性能。
Simulated the wireless infrared indoor diffuse communications system, and Observed the performance of wireless infrared communications under the conditions that high-speed data.
在通信系统中,引起误码率提高的一个重要原因是系统中同轴连接器的电接触故障。
It is found that electric contact failure of coaxial connector is one of the most important factors causing high error code rates in communication systems.
不需要大量计算,ERQ可以通过最佳连续码率和功率适应提高频谱效率。
Without any exhaustive numerical search, the ERQ can increase the spectral efficiency with the optimal continuous rate and power adaptation.
理论推导和仿真结果表明,COFDM调制技术适合在高压电力线载波通信中使用,在明显的提高数据传输率的同时降低误码率并增强系统可靠性。
Proved by the theoretic deriving and simulation result, the COFDM modulation technology is well suitable for high voltage PLC with a high transmission speed, low BER and high reliability.
为了提高传输质量,结合JPEG2000信源和FEC信道编码的统计特性,提出了一种基于非均匀错误保护的最优码率分配技术。
Based on unequal error protection with jointing JPEG2000 source and FEC channel coding, a novel optimal rate allocation technology is proposed.
合理选择线路码型有利于提高信号传输速率,减少误码率。
It is good to raise transmissibility of signal to select reasonable line code, and to reduce error code.
自适应调制能提高系统的频谱利用率和改善系统的误码率性能。
Adaptive modulation can improve the system performance with high spectral efficiency.
实验结果表明在不提升码率的前提下,提高了编码速度,有利于实时编码。
The experimental results show that the proposed method speeds up the encoding process on the basis of not increasing code bit rate , and it also benefits on real-time coding.
它用来对于信道传输中产生的频率偏移和相位偏移进行补偿,是提高传输的准确性和低误码率的有效的手段。
It compensate the frequency error and phase error caused in channel. It is the good method of improvement of transport veracity and lower fault code rate.
本论文是研究的对象是以低码率视频编码技术(基于H . 263)为目标的视频编码标准,目的是为了能大大提高视频质量。
The purpose of this thesis is to study about the video-coding standard targeted for low-bit-rate video coding technique (H. 263) that improves video quality considerably.
实验结果表明新型系统比原系统提高了信息传输速率,降低误码率。
The experimental results showed the new-type system had been improved that the transfer information rate is enhanced and the bit error rate is lower comparing with the previous sytem.
实验结果表明新型系统比原系统提高了信息传输速率,降低误码率。
The experimental results showed the new-type system had been improved that the transfer information rate is enhanced and the bit error rate is lower comparing with the previous sytem.
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