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- The subband coding gain is used as the criterion in design. 子带编码是图象信号压缩的一种有效方法。
- Finally, experimental results show that the subband coding gains can be markedly improved. 最后，给出例子说明，子带码增益明显提高。
- Design results show that the subband coding gains can be markedly improved,and this method can be extended in using M band conditions. 设计结果表明:子带编码增益可以得到明显提高,而且该方法还可以推广到M带情况。
- Subband coding gain 子带编码增益
- This paper introduces a new compression technique:Subband Coding and Wavelet Transforms,and discusses the fast algorithm of Wavelet Transforms. 介绍了新的压缩技术子带编码和小波变换，并讨论了计算小波变换的快速算法。
- This paper introduces a new compression technique：Subband Coding and Wavelet Transforms，and discusses the fast algorithm of Wavelet Transforms. 介绍了新的压缩技术子带编码和小波变换,并讨论了计算小波变换的快速算法。
- Subband coding and its cousin wavelet-based coding are now the preferred methods for not only speech, but also audio, image, and video signals. 完整的视讯索引技术可提供的视讯影片索引方法及影片前处理，使得使用者可以快速搜寻与浏览影片。
- Then we combine the Absolute Moment Block Trncation Codingand Subband Coding,which is called Subband Aboslute Moment Block TrncationCoding (SAMBTC). 该方法有效的克服了以往SAMBTC算法所带来的图像质量不理想,压缩比不高的弊端,并保持了原有的运算简捷性。
- The results show that TC OFDM system can provide 6dB coding gain at a BER of 10 -3 compared with no coding OFDM system. 结果表明 ,在比特误码率BER为 10 - 3时采用TC OFDM方案与未编码系统相比可以提供 6dB的编码增益。
- Some experiments have proved that the combination of Block Truncation Codingtechnique and Subband Coding can get the reconstructed picture of a little raggedness ofsharp ed. 实践表明,将块截断编码与子带编码相结合(即子带块截断编码算法),能去除前者所带来的严重的块效应,使重建图像质量明显提高。
- Simulation shows that optimal algorithm obtains the optimal coding gain for it fully utilizing the encoding constraints formed by ISI. 仿真结果表明，本算法充分利用了符号干扰信道自然形成的编码约束关系，获得了最大编码增益。
- Simulation results through computer showed that the proposed interleaver could obtain 1 dB coding gain, compared with other similar interleavers. 从计算机仿真结果看，所设计的交织器的性能与同类交织器相比，可获得ldB的编码增益。
- The performance of MIMO-OFDM system can be significantly improved for the diversity gain and coding gain of space-time coding. 并且通过计算机仿真验证了加入空时编解码的MIMO-OFDM系统性能的提高。
- As a case study, a previously unpublished 17/11 biorthogonal wavelet filter bank with rational coefficients is constructed, which has optimum coding gain. 作为构造实例，构造出一种新的有理系数17/11双正交小波滤波器，它具有优化的编码增益。
- Also，it can overcome frequency aliasing effect in general subband coding，and is more flexible than the resolution-layered coding which uses temporal subsampling and spacial filter. 另外，它比采用时间方向亚抽样和空间滤波器的分辨率分层方法更灵活，并克服了频率混叠现象。
- In the digital era that we live in, efficient coding of signals is an unquestionable need.This thesis is about one of the most useful and popular technique of digital coding: subband coding. 视讯索引技术在视讯随选系统与视讯图书馆系统中扮演相当重要的角色，但是庞大的视讯资料却是造成浏览困难与搜寻不易的最主要原因。
- The upper bound of pairwise error probability (PEP) of the MIMO_OFDM systems is investigated.The code gain and diversity gain of the proposed scheme are given. 本文分析了MIMO-OFDM系统成对错误概率的上限，给出了本文提出方案的编码增益和分集增益。
- To combat frequency-selective channel and to provide a channel coding gain, we combine low-density-parity-check (LDPC) codes and Alamouti scheme. 在这篇报告中，在两根传送天线的情形下，我们讨论的空频码是把低密度同位检查码与阿拉姆提码串连连结而成。
- It jointly uses the space-time trellis codes (STTC) and the space-time block codes (STBC) to achieve higher coding gain. 该技术采用子载波分组与线性预编码方案，通过适当的子载波分组，可以保证系统获得最大的分集增益，并使系统编译码的的复杂程度大为降低；
- PASC precision adaptive subband coding 精密自适应分段编码按钮开关
