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ofdm仿真
OFDM即正交频分复用技术,多载波调制的一种。其主要思想是:将信道分成若干正交子信道,将高速数据信号转换成并行的低速子数据流,调制到在每个子信道上进行传输。。每个子信道上的信号带宽小于信道的相关带宽,因此每个子信道上的可以看成平坦性衰落,从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分,信道均衡变得相对容易。(Orthogonal Frequency Division Multiplexing (OFDM) is a kind of multi-carrier modulation. The main idea is to divide the channel into several orthogonal sub-channels, convert high-speed data signals into parallel low-speed sub-data streams, and modulate them to transmit on each sub-channel. The signal bandwidth on each sub-channel is less than the correlation bandwidth of the channel, so it can be seen as flat fading on each sub-channel, which can eliminate inter-symbol interference. Moreover, since the bandwidth of each subchannel is only a small part of the original channel bandwidth, channel equalization becomes relatively easy.)
- 2019-04-27 10:18:25下载
- 积分:1
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C#登陆示例 吱吱
C#登陆示例 吱吱 具有登陆 连接SQL SERVER数据库注册等功能,可以查看。还有树形图 初次上传,欢迎下载。
- 2022-01-25 23:45:05下载
- 积分:1
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C# 显示磁盘目录信息 示例
C# 显示磁盘目录信息 示例
- 2013-02-11下载
- 积分:1
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healthLog
HealthLog日历源码
HealthLog是一个用于记录健康相关信息的日历,例如可用于记录您的体育锻炼和节食数据。这是一个单机应用程序,
同时它拥有一个Web界面。实际上,它是一个Microsoft ASP.NET AJAX(此前称为Microsoft Atlas)应用程序,
由一个轻量级的web服务器支撑着,直接在本机上面运行。
(HealthLog)
- 2009-11-25 15:21:12下载
- 积分:1
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jingsai
基于STM32的火灾报警系统,可以测试瓦斯等可燃气体浓度并短信通知。
(Fire alarm system based STM32)
- 2020-12-08 15:29:21下载
- 积分:1
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shuju.xls
性指标的价值函数达到最小。FCM与HCM的主要区别在于FCM用模糊划分,使得每个给定数据点用值在0,1间的隶属度来确定其属于各个组的程度。与(indicators of the value of minimizing function. HCM FCM with the main difference is fuzzy FCM, broken down to make each set of data points with the value 0, one of the membership to determine its belong to the group level. And)
- 2007-06-15 15:58:01下载
- 积分:1
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wanguanjiplc
弯管机PLC程序,可以参考学习,结合自己使用的实际情况改设置就可使用。(The bending machine PLC program, you can refer to learning, combined with the actual situation of their use changed settings can be used.)
- 2021-01-20 14:58:41下载
- 积分:1
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1
说明: 基于神经网络的字符识别系统
通过VC6实现 里面有详细的说明(Neural network based character recognition system achieved through VC6 which are described in detail)
- 2011-11-24 22:13:51下载
- 积分:1
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GPS坐标转换软件与源程序 coortran
GPS坐标转换软件与源程序
支持世界上大多数坐标框架下,大地坐标空间直角坐标以及平面投影坐标(UTM、高斯)等的相互转换(GPS coordinate conversion software with source code to support most of the world)
- 2008-07-12 10:35:47下载
- 积分:1
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bcb
说明: BCB串口通讯源码示例程序。利用winapi函数,而非控件。(BCB examples of serial communication program source. Use WINAPI function, rather than control.)
- 2008-08-31 10:26:21下载
- 积分:1