-
MIMO OFDM
实现基于STBC的MIMO_OFDM通信系统在不同信噪比情况下接收端的误比特率的仿真。发射端包括基于基带调制、空时编码、导频插入、IFFT、串并合并以及添加循环前缀；接收端包括去除循环前缀、取出导频估计信道、FFT运算以及并串合并，空时解码等。仿真中采用QPSK、空时编码采用4*3的复正交空时编码矩阵。OFDM子载波数为100，每个子载波传输66个符号，每个符号2比特。IFFT长度为512个符号。发射天线为3个接收天线为2个。(The BER simulation of MIMO_OFDM communication system based on STBC under different SNR is realized. The transmitter includes baseband modulation, space-time coding, pilot insertion, IFFT, serial-parallel combination and adding cyclic prefix; the receiver includes removing cyclic prefix, extracting pilot estimation channel, FFT operation, parallel-serial combination, space-time decoding, etc. The complex orthogonal space-time coding matrix is used in QPSK and space time coding in 4*3. The number of OFDM subcarriers is 100, and each subcarrier transfers 66 symbols with 2 bits per symbol. IFFT is 512 symbols in length. The transmitting antenna is 3 receiving antennas, 2.)
- 2020-12-07 16:19:21下载
- 积分：1
-
S_curve
说明： matlab生成s曲线，类似PS中的曲线调整功能，可以动态的实现S曲线曲率的调整(Matlab generates s curve, similar to the curve adjustment function in PS, which can dynamically realize the adjustment of s curve curvature)
- 2020-06-17 09:00:02下载
- 积分：1
-
bnsk
his folder contains the following files 1 02490rxP802-15_SG3a-()
- 2018-02-01 04:12:24下载
- 积分：1
-
下垂
说明： 下垂控制在逆变器型微电网控制中得到了广泛应用。当线路呈阻性时,有功功率和无功功率存在较强耦合,影响了下垂控制的性能。目前提出了两大类解决方法:一类方法通过控制参数的选取使逆变器的等效输出阻抗在基频段呈感性,但该方法的输出阻抗受制于控制参数并且存在较大缺陷;另一类方法用逆变器输出电流和虚拟阻抗计算电压降,从指令电压中减去该电压降,达到模拟实际阻抗的作用,效果更优,但对其机理缺乏阐述,且存在逆变器输出电压偏差问题。(Droop control is widely used in inverter based microgrid control. When the line is resistive, there is a strong coupling between active power and reactive power, which affects the performance of droop control. At present, two kinds of solutions are proposed: one is to make the equivalent output impedance of the inverter inductive in the fundamental frequency band by selecting the control parameters, but the output impedance of this method is subject to the control parameters and has great defects; the other is to calculate the voltage drop by using the output current and virtual impedance of the inverter and subtract the voltage drop from the command voltage to simulate the actual impedance, The effect is better, but its mechanism is lack of elaboration, and there is the problem of inverter output voltage deviation.)
- 2021-01-31 20:33:07下载
- 积分：1
-
derek_zhu201409252059（tvpvar）
用于估计TVPVAR模型,使用MATLAB语言编程，其中有比较详细的程序使用说明(It is used to estimate TVPVAR model.)
- 2020-11-11 16:29:44下载
- 积分：1
-
移动节点定位
说明： 水声通信网移动节点定位误差分析，主要描述了位置为节点相对于固定节点的位置变化(Positioning error analysis of mobile node in underwater acoustic communication network)
- 2019-10-22 10:18:44下载
- 积分：1
-
FPID
模糊PID用以控制电机的转速，实践证明控制效果比一般的pid效果要好(fuzzy pid is to control the morto ,the result of fuzzy pid is good)
- 2020-11-01 19:19:57下载
- 积分：1
-
syntraces
合成地震记录程序，主要用于石油勘探中的正演模拟(this procedue is user for syn seismic data, mostly use for forword modeling in oil exploration)
- 2009-09-07 17:29:24下载
- 积分：1
-
source
本程序采用F2812作为控制器，实现6个小led灯一次亮灭，使用GPIOA0-A5输出口(The program uses F2812 as a controller, 6 small led lights to achieve a light off, use GPIOA0-A5 output port)
- 2013-08-20 11:29:07下载
- 积分：1
-
FFT
语音信号处理的fft算法
编程实现了FFT算法，运用编写的FFT程序对信号进行FFT计算和还原，待分析的信号是一段音乐，与Matlab的FFT函数进行了比较并设计系统页面
(FFT algorithm for speech signal processing
FFT programming algorithm, the use of the preparation of the FFT program to calculate and restore the signal FFT, the signal to be analyzed is a piece of music, and the Matlab function of the FFT and the design of the system page)
- 2017-04-09 09:20:18下载
- 积分：1
