软件无线电架构研究

本文简要地介绍了软件无线电的发展趋势和技术方向,并对各种架构的软件无线电运算处理平台进行了优缺点对比,着重分析了并行运算平台的设计方法和性能特点,对几种已投入应用的典型构架和UML的应用进行了说明.     

星载高性能DSP加固设计方法研究

分析了高性能数字信号处理器程序存储区的位翻转、数据存储区的位翻转、外设控制寄存器的功能中断、中断控制寄存器的单粒子功能中断、程序Cache的位翻转、JATAG逻辑的功能中断等原因引起的失效模式,给出了软件设计中的几个有效的加固方法.这些方法应用于某卫星通信载荷设计中,试验证明,这些方法可以有效地对付由单粒子翻转和单粒子功能中断等辐射效应引起的DSP故障或者失效.     

基于WinCE便携式检波器特性测量仪的设计与实现

介绍了一种基于WindowsCE操作系统,以S3C2410为核心处理器的便携式检波器特性测量仪的软硬件实现方案,并对声场进行了分析,满足了测量范围广、体积小、功耗低等设计要求,并且具有窗口式显示形式,可以方便地进行仪器的配置和校准。     

Development of a parallel molecular dynamics code on SIMD computers: Algorithm for use of pair list criterion

In recent years several implementations of molecular dynamics (MD) codes have been reported on multiple instruction multiple data (MIMD) machines. However, very few implementations of MD codes on single instruction multiple data (SIMD) machines have been reported. The difficulty in using pair lists of nonbonded interactions is the major problem with MD codes for SIMD machines, such that, generally, the full connectivity computation has been used. We present an algorithm, the global cut-off algorithm (GCA), which permits the use of pair lists on SIMD machines. GCA is based on a probabilistic approach and requires the cut-off condition to be simultaneously verified on all nodes of the machine. The MD code used was taken from the GROMOS package; only the routines involved in the pair lists and in the computation of nonbonded interactions were rewritten for a parallel architecture. The remaining calculations were performed on the host computer. The algorithm has been tested on Quadrics computers for configurations of 32, 128, and 512 processors and for systems of 4000, 8000, 15,000, and 30,000 particles. Quadrics was developed by Istituto Nazionale di Fisica Nucleare (INFN) and marketed by Alenia Spazio. © 1998 John Wiley & Sons, Inc. J Comput Chem 19: 685–694, 1998     

TMS320C62xx DSP中的混合编程优化程序代码

阐述了基于TMS320C62xxDSP的C语言和汇编语言混合编程应遵循的接口规范,介绍了如何编写并行汇编代码,最后给出了一个数据采集的混合编程实例。     

Generic fault isolation concept for telecommunication systems in access networks

This paper presents an approach for a generic fault isolation (FI) concept for telecommunication systems in the access network area. Based on a distributed processor architecture, a universal software structure for a FI unit is proposed. It is able to isolate faults, field replaceable units and is easily portable to different hardware platforms. The reusability of the FI unit is achieved by separating the software into generic control functionality and fully hardware-dependent software parts, i.e. user configurable tables and hardware-dependent control routines. The implementation of the concept is discussed in a ‘fiber to the building’-system which has already entered into mass-production. © 1997 John Wiley & Sons, Ltd.     

基于DTW/SVM的语音识别系统在DSP中的实现

采用动态时间归正算法(DTW)和支持向量机(SVM)相结合产生一个新的基于径向基函数的DTW核函数实现语音识别,该方法在小词汇量及孤立词识别方面相对传统的隐马尔可夫模型有较大优势。为了满足语音识别系统对实时性和便携性的要求,提出了基于DTW/SVM的混合方法在TMS320C6711DSP芯片中实现的应用研究;给出了语音识别系统的原理框图,其中采用Mel倒谱系数为语音特征参数,应用了可变窗长端点检测技术;阐述了DSP设计中系统的软硬件设计方案及具体的接口电路,该系统使得语音识别更为快速便捷,并且具有一定的通用性。     

MSP430用于专业遥控器的硬件设计

用于智能楼宇的专业遥控器的设计要求既有特色又要出色。以TI公司的MSP430混合信号处理器为主MCU,以160X160点阵液晶触摸屏为人机对话部件,辅以其它高性能外围元器件构筑成其硬件电路。充分利用MSP430的超低功耗特性和丰富的片内资源以及极高的运算／控制性能,通过软件编程实现了电池供电的高性价比专业遥控器：具有自学习和用户重定义重编辑菜单及图标功能,具有游戏功能。具有既万能又专业的双重特点。     

在PC机上处理C－R6A机的色谱图和数据

Programs involving C and C-R6A BASIC languages are compiled to get and handle the chromatogramsand data from C-R6A chromatographic data processor. The chromatogram and data can be changed to ASCIIfile or random file and can be processed by any advanced languages.     

TMS320DM642在视频拼接系统中的应用

提出一套基于TMS320DM642的视频拼接系统,对视频拼接技术、系统的硬件资源选择和工作流程等关键问题进行了详细的讨论.实验结果表明,视频拼接系统可以获得一个满足要求的高分辨率、无缝且大视场图像.