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Freqz
驗證DTFT的Time Shift property(The verification of DTFT Time Shift property)
- 2014-12-29 09:02:37下载
- 积分：1
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ex4
计算机图形学中，用射线法和弧长法两种方法判断点是否包含在多边形内部(matlab实现)
(Computer graphics, the ray method with arc-length method and two methods to determine whether the points included in the polygon internal (matlab realize))
- 2008-04-21 10:32:32下载
- 积分：1
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CreatePointshp
ArcGIS二次开发，创建点shape文件的代码(ArcGIS secondary development, create a point shape file' s code)
- 2013-06-09 12:53:12下载
- 积分：1
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bpsk_Awagn_Rayleigh
说明： 实现了一个直接扩频系统，使用BPSK作为调制解调方法。并比较白噪声AWGN及瑞利衰落(rayleigh fading)环境下，误码率的影响。(There are two files in the zip folder. bpsk_spread.m and jakesmodel.m
Steps for simulation:
1] Run jakesmodel.m first
2] Then run bpsk_spread.m .
3] Note that during the first run bpsk_spread.m has no rayleigh fading.This is because the corresponding code has been commented
4] The resulting performance is stored in BER_awgn.
5] Now uncomment the Rayleigh Fading code in bpsk_spread.m file.
6] Same time comment BER_awgn (line 112) and uncomment BER_ray variable.
7] Run the simulation.
To compare the perfromances of the receiver using DSSS plot the BER_awgn and BER_ray
>>semilogy([1:8],BER_awgn(1:8), g* )
hold on
semilogy([1:8],BER_ray(1:8), -.b* )
hold on
grid on )
- 2010-03-22 23:11:17下载
- 积分：1
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基于最大类间方差阈值与遗传算法的道路分割
最大类间方差法是由日本学者大津(Nobuyuki Otsu)于1979年提出的,是一种自适应的阈值确定的方法,又叫大津法,简称OTSU。它是按图像的灰度特性,将图像分成背景和目标2部分。背景和目标之间的类间方差越大,说明构成图像的2部分的差别越大,当部分目标错分为背景或部分背景错分为目标都会导致2部分差别变小。(The largest between-class variance method was proposed by the Japanese scholar Nobuyuki Otsu in 1979. It is an adaptive threshold determination method, also known as the Otsu method, or OTSU for short. It is based on the grayscale characteristics of the image and divides the image into two parts: the background and the target. The larger the variance between the background and the target, the greater the difference between the two parts that make up the image. When the part of the target is wrongly divided into backgrounds or part of the background is mis-divided into goals, the difference between the two parts will be smaller.)
- 2018-04-15 11:26:03下载
- 积分：1
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ofdm-modulation
该文档为一个实现ofdm子载波调制和解调的代码，利用QPSK和16QAM两种方式实现，并附有运行结果。(This document is an implementation of ofdm subcarrier modulation and demodulation of the code, the use of QPSK and 16QAM two ways, along with operating results.)
- 2020-07-02 07:00:01下载
- 积分：1
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AMC
说明： 本文主要从自适应调制的算法及实现出发，引入了OFDM子载波分组的概念，详细阐述了五种固定阈值算法和子带BER预估计算法的原理及实现，并在此基础上加入自适应编码，实现自适应调制与编码。(Based on the algorithm and implementation of adaptive modulation, this paper introduces the concept of OFDM subcarrier grouping, elaborates the principle and implementation of five fixed threshold algorithms and subband BER estimation algorithm, and adds adaptive coding to realize adaptive modulation and coding.)
- 2021-04-10 10:11:13下载
- 积分：1
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111
说明： bergeron仿真贝吉龙过程，温度低于0℃且过冷却水滴、冰晶、水汽共存的云区，由于冰面的饱和水汽压低，而水面的饱和水汽压高，因此便会有这样的情况出现，即当云中的水汽压处于冰面和水面饱和值之间时，水汽在冰晶上凝华而使冰晶长 大，而水滴会不断蒸发变小或消失，形成冰晶“ 夺取”水滴的水分和原来云中水汽的冰水转化过程。(The saturated water vapor pressure of the bergeron surface is high, so there will be a situation where the water vapor in the cloud is between the ice surface and the saturation value of the water surface, the water vapor condenses on the ice crystals and causes the ice crystals to grow, and the water droplets will The evaporation continues to become smaller or disa)
- 2020-09-23 20:37:48下载
- 积分：1
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lithium battery
说明： 锂离子电池储能的一阶响应仿真模型，能基本实现电池储能的充放电。(The first-order response simulation model of Li-ion battery energy storage can basically realize the charge and discharge of battery energy storage.)
- 2020-09-10 14:58:01下载
- 积分：1
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PCANet_FeaExt
PCANet_FeaExt，基于主成分分析的卷积神经网络的特征提取过程。(A simple deep learning baseline for image classification)
- 2017-03-22 16:59:43下载
- 积分：1
