9.1 超声波及其物理性质 9.2 微波传感器 9.2.1 微波的性质与特点 9.2.2 微波振荡器与微波天线 9.2.3 微波传感器及其分类 9.2.5 微波传感器的应用

一、信道分类及信道特性分析 二、数字微波通信系统 三、数字卫星通信系统 四、数字光纤通信系统

STEP7是用于 SIMATIC可编程逻辑控制器的组态 和编程的标准软件包。它是 SIMATIC工业软件的组成部 分 STEP7标准软件包具有强大的功能,主要有:

Improving performance of coherent coded It can be shown that if the channel estimates are perfect(a1=a1, a2 OFDM systems using space time transmit a2)diversity can be achieved

Introduction Frequency-selective fading is a dominant impairment in mobile communications Fading reduces receive signal-to-noise ratio and degrades the bit-error-rate(BER) Frequency selectivity of the channel, i. e, delay spread, induces inter-symbol interference(ISI) To combat frequency-selective fading

INFORMATION TO USERS This manuscript has been reproduced from the microfilm master UMl filt the text directly from the original or copy submitted. Thus, some thesis dissertation copies are in typewriter face, while others may be from any type of coMm

IEEE TRANSACTIONS ON COMMUNICATIONS. VOL 50. NO. 1 JANUARY 2002 LDPC-Based Space-Time Coded OFDM Systems Over Correlated Fading Channels: Performance Analysis and Receiver design Ben Lu, Student Member, IEEE, Xiaodong Wang, Member, IEEE, and Krishna R Narayanan, Member: IEEE AbstrackWe consider a space-time coded (STC) orthogonal systems integrate the techniques of antenna array spatial diver-

第6章MPS供料单元的结构与控制 6.1供料单元的结构 6.1.1供料单元的功能 供料单元是MPS中的起始单元,在整个系统中,起着刘向系统中的其它单元提供原槽料的作用

检测单元的功能 检测单元的主要任务有两个, 即:识别工件材料和检测工件的尺 寸。在MPS系统中,它是将供料单刘增元提供的工件进行材料识别及尺寸辉的检测,并根据要求将满足条件的主工件通过滑槽送到下一个工作单元, 编对于不符合要求的工件在本单元中剔除

一、教学计划 本章教学需要4个学时。 二、教学大纲 (一)账表导向审计 1、账表导向审计的目标 2、账表导向审计的发展过程 3、账表导向审计的局限性