串级系统

Based on memory and recursive of CPE,combining with cirrocu-mulus code and inter leaver,the system model of Turbo CPM is founded.

基于CPE的记忆特性和递归特性，结合外部的卷积码及交织器，建立串行级联Turbo CPM系统模型。

7 To 3.3 V operating supply voltage 44.1 kHz sampling frequency 16.9344 MHz (384fs) system clock Built-in crystal oscillator circuit 16-bit, MSB rst, rear-packed serial data input format ( 64 fs bit clock) 8-times oversampling digital lter · 32 dB stopband attenuation ·+0.05 to -0.05 dB passband ripple Deemphasis lter operation · 36 dB stopband attenuation ·-0.09 to +0.23 dB deviation from ideal deem- phasis lter characteristics Attenuator · 7-bit attenuator (128 steps) set by microcontrol- ler Soft mute function set by parallel setting ·(approximately 1024/fs total muting time) Mono setting · Left or right channel mono selectable by micro- controller Built-in innity-zero detection circuit , two-channel D/A converter · 3rd-order noise shaper · 32fs oversampling Built-in 3rd-order post-converter low-pass lters 24-pin VSOP package Molybdenum-gate CMOS process

2.7至3.3 V工作电源电压为44.1千赫的采样频率16.9344兆赫（384fs）系统时钟内置晶体振荡器电路的16位，MSB在前，后包装的串行数据输入格式（64飞秒位时钟）8倍超采样数字滤波器·32分贝的阻带衰减·+0.05至-0.05分贝通带纹波去加重滤波器的运作·36 dB抑制频宽衰减·-0.09到0.23 dB的偏差认为不理想，症状困扰评估滤波特性衰减器·7位衰减器（128级）集由单片机在-莱尔软静音功能的平行设置·（共约1024/fs静音时间）单声道设置·左或右声道单声道微控制器可选的内置的无限零检测电路Δ，两通道的D / A转换器·第三阶噪声整形·32fs过采样内置三阶后转换器的低通滤波器24引脚VSOP封装钼栅CMOS工艺

The model this paper deals with is a flow line of two machines. By means of structured stochastic matrix theory and theory of Markov process, an effective algorithm obtaining the variance of end products in a given period is proposed.

讨 论的模型为两级的串行生产线，利用结构随机矩阵理论和马氏过程的协方差结构，给出了在一个给定时间区间内系统生产成品数方差的有效算法。

The paper is an important part of tenth-five national defense scientific research. Using correct coding technology we research anti-jamming technology of millimeter communication system. The method of code is serial coherent convolved code.

本论文是&十五&国防科研项目的重要组成部分，主要采用信道中纠错编码的手段研究了毫米波通信系统的抗干扰问题，编码的方法选用串行级联卷积编码。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。