摘要
基于CS -ACELP语音压缩算法 ,提出了地空战术数据链话数同传技术方案 ,使有限的信道带宽内 ,数传同时可传输高效高质的多路话音。在实现方法中 ,采用了二次端点递归法进行自适应码本快速搜索 ,很大程度上提高了软件效率 ,硬件方面考虑了DSP的外设资源 ,对其接口进行了合理设计。
A technical scheme of word data co-transmit in the air-ground tactical data link system is presented. This scheme is based on CS-ACELP speech compress algorithm. In the limited channel bandwidth, multi-channel speech signals can be transmitted at the same time of data transmitting. In the scheme implementation, the two - order end recursion method is utilized to do the search computing for adaptive codebook, and the run efficiency of algorithm is greatly raised. In addition, the peripheral resources characteristics of DSP chip are taken into consideration, and an effective design is made for the hardware interface.
出处
《空军工程大学学报（自然科学版）》
CSCD
2004年第3期45-48,共4页
Journal of Air Force Engineering University(Natural Science Edition)
基金
军队专项科研基金资助项目
关键词
地空战术数据链
语音压缩
话数同传
端点递归法
air - ground tactical data link
speech compress
word data co - transmit
end recursion method
