RS码编码参数的盲识别

针对现有的RS（Reed-Solomon）码盲识别计算复杂度较大的问题，提出了一种新的识别方法。首先统计不同码长分组时的码重分布，并定义与理论码重分布之间的相似度系数，通过计算找出最相似的一组即对应正确的码长；然后建立二元假设，并确定判决门限对码根进行判定；通过遍历域内所有的本原多项式，找出完整的连续码根分布，进而完成生成多项式的识别。仿真结果表明，所提方法的计算量较其他方法明显减少，并能有效完成码长和生成多项式的识别，在误码率小于10－3时，对常用RS码的识别率能达到90%以上。     

新型船舶自动识别系统设计及其同步算法分析

为了提高船舶自动识别系统（AIS）的容量，提出了基于正交频分复用技术（OFDM）的新型AIS系统设计方案。新系统设计主要包括系统参数设计、系统帧结构设计。新系统链路容量和信道传输速率均较传统AIS系统提高了6倍，实现了频域资源的有效利用。该系统对符号定时偏差和载波频率偏差特别敏感，因此对接收信号的同步处理必不可少，在设计的新系统基础之上提出了一种新的盲估计算法，利用包含在循环前缀内的冗余信息，在多径信道信息未知的情况下，直接通过对接收信号做相关构造一个归一化的相关特性函数，通过此函数可得到符号时延位置和多径信道长度，进而得到载波频率偏差。仿真结果表明在多径信道下该算法也具有较好的性能。     

基于单片机的数制转换算法设计

从数制转换的基本原理出发,分析了二进制数与十进制数之间的相互关系,并依此推出了将二进制数转换为十进制数的方法;在此基础之上,以8位二进制数转换成3位十进制数为例,探讨了实现这一转换算法的详细过程。     

基于Cyclone EP1 C6Q240C8的汉明码编码器设计

基于CycloneⅡ实验板设计实现了汉明码编码器。利用开发板上的按键、串口、LED等资源,对接收到的数据进行汉明码编码或纠错,并将处理结果通过LED显示出来。实验表明,该编码器编码快速准确,稳定性高。     

Home care routing and scheduling problem with teams’ synchronization

The demand for home care (HC) services has steadily been growing for two main types of services: healthcare and social care. If, for the former, caregivers' skills are of utter importance, in the latter caregivers are not distinguishable in terms of skills. This work focuses social care and models caregivers' synchronization as a means of improving human resources management. Moreover, in social care services, several visits need to be performed in the same day since patients are frequently alone and need assistance throughout the day. Depending on the patient's autonomy, some tasks have to be performed by two caregivers (e.g. assist bedridden patients). Therefore, adequate decision support tools are crucial for assisting managers (often social workers) when designing operational plans and to efficiently assign caregivers to tasks. This paper advances the literature by 1) considering teams of one caregiver that can synchronize to perform tasks requiring two caregivers (instead of having teams of two caregivers), 2) simultaneously modelling daily continuity of care and teams' synchronization, and 3) associating dynamic time windows to teams' synchronizations introducing scheduling flexibility while minimize service and travel times. These concepts are embedded into a daily routing and scheduling MIP model, deciding on the number of caregivers and on the number and type of teams to serve all patient tasks. The main HC features of the problem, synchronization and continuity of care, are evaluated by comparing the proposed planning with the current situation of a home social care service provider in Portugal. The results show that synchronization is the feature that most increases efficiency with respect to the current situation. It evidences a surplus in working time capacity by proposing plans where all requests can be served with a smaller number of caregivers. Consequently, new patients from long waiting lists can now be served by the “available” caregivers.     

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。