底火输出能量的几种测量方法

介绍了国内外底火输出能量的几种测量方法:压力测量法、光学测量法、声学测量法、机械能量输出测量法,分析了各种测量方法的特点及应用情况;提出结合密闭爆发器原理,通过测量底火输出的火焰温度、底火作用时的压力——时间关系、声学特性等,对底火输出能量进行全面定量化测试的研究方向。

AMR的信道编码设计及其DSP实现

对于超短波移动通信系统中AMR语音业务的传输，提出了基于码率兼容的删余卷积码和码率兼容的删余Turbo码这2种可变的不等差错保护信道编码方案。通过设计最优的删余方案和合适的速率匹配方法，这2种不等差错保护方案都可达到类内不等保护的目的，将对具有不同重要性的信源比特的作更精确不等保护。并基于DSP芯片TMS320C6416实时实现了这2种方案对AMR语音的不等差错保护。实验结果表明，这种方法具有合理的系统复杂度和很短的处理延时，适合于语音业务的应用。

Channel Coding Techniques for VHF-Mobile Radio System and Its DSP Implementation

Two variable channel-coding schemes with unequal error protection （UEP） are proposed in terms of speech transmission over VHF-mobile radio system. These channel coding are separately based on rate-compatible punctured convolution （RCPC） code scheme and rate-compatible punctured turbo （RCPT） code scheme. With optimum puncturing designation and suitable scheme of rate matching, these two UEP schemes can achieve intra-class unequal error protection, which makes the protection for source bits with different importance more accurate. Its real time implementation based on a TMS320C6416 digital signal processor is also presented. The experimental results suggest that this method have reasonable system complexity and short processing delay.