very low code rate 甚低码率
low-rate code 低信息率码
low rate code 低率码
low error code rate 误码率低
Low-bit-rate speech code 低速率语音编码
In modern times communication system, the video image compression code technique is mainly applied in the low code rate at present.
在现代通信系统中，高效快速的编码算法的研究已经成为视频图像传输的关键技术，是业界极为关注的热点课题。
Moreover, the bandwidth is a very limited and precious resource. And the low code rate speech codes is one of the important methods to be economical bandwidth.
信道带宽是非常有限和宝贵的资源，而低码率语音编码技术是节省带宽的重要方法之一。
To overcome the bad performance in combating fading of BLAST and low code rate of STBC, a layered structure STBC is introduced in this article by combining BLAST and STBC.
主要介绍了发射分集技术中用于抗信道衰落和提高系统容量的空时分组码和分层空时码的原理和基本特点，并对这些空时编码技术进行了性能分析。
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