编写一个算法,输出一个二叉树的所有叶子结点,并统计叶子结点个数...

本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method.

UML语言构建的电梯管理系统-UML Elevator Construction Management System

自己编写的用于时序分析的matlab源码,可以用于故障分析与诊断,-their preparation for the time-series analysis of the source code Matlab can be used to fault analysis and diagnosis,

一个女生做的网页。。很漂亮的。。里面很多东西经过测试-girls do a website. . Very nice. . Inside many things tested.

电力载波抄表数据库设计，包括前置机，采集器，处理机，排队机，企业管理，发电机参数及负荷预测等部分-Power Line Meter Reading database design, including front-end, collector, processor, Queue, enterprise management, generator parameters and load forecasting, such as part of

设计模式，命令模式，好莱坞法则，学习设计模式-design pattern, command pattern

mbpVSDTServer

非等宽汉字点阵字库制作软件-non-Chinese lattice-width font creation software.

在设计数字滤波器时，通常采用MATLAB来进行辅助设计和仿真,介绍具体的设计方法-In the design of digital filters, it is usually carried out using MATLAB-aided design and simulation, introduction of specific design methods

麦克斯32的中文使用说明书，要的下哦，以后在传些程序上来。-drum 32 Chinese instruction manual to the next, oh, after some in-line with procedures.