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opnet_dsr
运行在opnet仿真平台下的dsr路由协议模型(Configure the IMS model has an important role in packages, sip and umts 3g network in opnet)
- 2012-04-05 13:53:06下载
- 积分:1
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MATLAB
接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。具体的帧结构,以及定时估计,频偏估计,剩余误差跟踪的算法可参考算法说明文档。这里对程序的流程进行说明。
首先根据短训练字的特性进行相关运算,进行信号到达检测,当检测到相关值大于门限一定次数后,认为有信号到达。然后根据长训练字的特性,进行相关运算,进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后,先在时域进行小频偏的估计,将两个长训练字进行小频偏补偿后,进行FFT运算,根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后,就可以进行数据解调了。先对数据部分进行完整的频偏补偿,然后根据估计的FFT窗口位置进行FFT运算得到频域的数据,进行解调。然后在对应于导频的子载波位置上提取出导频信息,根据导频信息估计出剩余定时误差以及剩余的信道响应误差,将误差量送入环路进行跟踪。当收到所有数据后,重新回到信号到达检测状态,进行下一次信号到达的检测和信号接收。
(good)
- 2020-11-04 23:49:52下载
- 积分:1
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TMS320-F28335LED_test
说明: 控制TMS320-F28335 LED灯闪烁(TMS320-F28335 LED test)
- 2019-02-22 15:51:22下载
- 积分:1
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radarbasics
radar basics and about two a4 sheets.
- 2009-10-08 16:04:56下载
- 积分:1
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USTM
说明: 快衰落多输入多输出信道中,无信道状态信息的酉空时调制。属于信道发射和接收两端均无信道状态信息的非相干空时码。程序包含一个主程序和一个酉空时信号产生子程序,并给出误比特率。(Unitary space-time modulation without channel state information in fast fading MIMO channels. It belongs to the incoherent space-time code with no channel state information at both ends of the channel transmitting and receiving. The programs include a main program and a unitary space-time signal generation subroutine, and gives the bit error rate.)
- 2019-06-27 08:00:30下载
- 积分:1
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OFDM_frequencyoffset
很好的OFDM系统载波同步算法,采用了长短训练序列分别进行小数倍频偏估计和整数倍频偏估计(This is a good carrier synchronization algorithm for OFDM system, using the long he short training sequences respectively to fractional frequency offset estimation and integer times frequency offset estimation)
- 2017-12-07 10:59:08下载
- 积分:1
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the-design-of-MVB-and-ethenet
有关MVB与工业以太网网关的设计与研究,对列车通信网络感兴趣的朋友可以看看(MVB and industrial Ethernet gateway for the design and research on the train communication network interested friends can see)
- 2011-10-31 18:23:49下载
- 积分:1
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nakagami
Nakagami信道仿真,看后能够用三种方法仿真出Nakagami信道~可以向我要源代码(Nakagami channel simulation, three ways to look after the simulation the Nakagami channel ~ I want the source code can)
- 2010-11-06 13:54:29下载
- 积分:1
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2dpsk
设计了差分编码移相键控(2DPSK)调制解调系统的工作流程图,并利用 Matlab 软件对该系统的动态进行了模拟仿真。利用仿真的结果,从基带信号的波形图可以衡量数字信号的传输质量 由系统的输入和输出波形图可以看出,仿真实验良好 。(Design of a differential phase shift keying encoding (2DPSK) modulation and demodulation system working flow chart of the system using Matlab software to simulate the dynamics simulation. Using simulation results, from the baseband signal waveform can be measured digital signal transmission quality by the system' s input and output waveforms can be seen that simulation is good.)
- 2011-05-01 09:56:08下载
- 积分:1
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新建文件夹 (2)
生成圆锥共形阵阵元位置,改变顶角,圆锥高度,阵元间距(Generate the position of conical conformal array elements, change the apex angle, the height of cone and the spacing of array elements)
- 2019-07-03 21:47:44下载
- 积分:1