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QPSK
Direct sequence spread spectrum (DSSS) communication systems has been widely
used in these years for its advantage of wide spectrum, low working Signal-to-Noise
ratio (SNR), anti-interference, anti-multipath effect and capability of LPI and LPD.
They are increasingly replacing conventional communication forms and obtaining
extensively applications in modern military and commercial communication systems,
for example, CDMA communication system, GPS , measuring and control system,
satellite chain, identification of friend or foe and etc. Therefore, corresponding DSSS
electronic counter technique becomes a big problem to solve in electronic warfare
domain. DSSS electronic counter technique including blind detection, blind parameter
estimation and spreading sequences estimation. For the issue of DSSS electronic
counter technique of DSSS/QPSK signal damaged by strong additive white Gaussian
noise (AWGN), the main research content in this dissertation as follow.
- 2015-03-04 14:20:29下载
- 积分：1
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band-pass-filter-by-remez-function
用MATLAB中remez函数设计一带通FIR滤波器。打印出单位脉冲响应 ，并画出幅频响应。(Design using MATLAB function in the vicinity of remez pass FIR filter. Print out the unit impulse response and frequency response plot.)
- 2012-01-29 15:50:11下载
- 积分：1
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17556m_seq
m序列的matlab实现，m序列的matlab实现(Implementation of m sequences)
- 2013-11-04 22:17:50下载
- 积分：1
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jichu
基于matlab，实时视频处理平台的开发和应用。。。调用摄像头(Based on MATLAB, real-time video processing platform development and application... Call the camera)
- 2013-12-03 19:38:22下载
- 积分：1
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yiqunsuanfa
蚁群算法的源代码，蚁群算法又称蚂蚁算法，是一种用来在图中寻找优化路径的机率型算法。(Ant colony algorithm source code, algorithm, also known as ant colony algorithm is a method used to find the optimal path in the graph the probability-based algorithm.)
- 2011-07-07 11:37:51下载
- 积分：1
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filter
滤波器的设计和实现，可以观察程序的结果，来看滤波效果，很好的学习资料(design filter)
- 2011-12-05 19:21:18下载
- 积分：1
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matlabxuexishili
说明： 具体讲解matlab的学习实例，达到让初学者耳目一新的感觉(Specific examples to explain the learning matlab to achieve a fresh experience for beginners)
- 2011-02-27 11:03:57下载
- 积分：1
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matlabgame
说明： 使用matlab程序编成的一个猜数的小游戏(Matlab program compiled using a guessing game)
- 2010-04-24 21:04:58下载
- 积分：1
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xsk_RMA.m
合成孔径雷达 sar的 RMA算法实现(Synthetic aperture radar sar RMA algorithm)
- 2020-10-21 14:07:24下载
- 积分：1
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music_two
述是经典MUSIC算法的基本原理，许多限制是可以放宽或取消的。首先，关于均匀线阵的限制不是必须的，实际中可采用几乎是任意形状的阵列形式，只要满足在个独立信号源的条件下，矩阵具有个线性无关的列就可以了。其次，天线阵元在观测平面内无方向性这一点也不是必要的，而且还可以考虑三维空间的DOA估计问题，即不仅估计信号的方位角，还要估计它的俯仰角，当然MUSIC算法还用于频率、方位和俯仰的联合估计。(Above is the basic principle of the classical MUSIC algorithm, a number of restrictions can be relaxed or canceled. First, restrictions on ULA is not necessary, the actual form of an array can be almost any shape, as long as the signal source in the independent condition matrix has linearly independent columns on it. Second, the antenna elements in a plane non-directional observation it is not necessary, but could also be considered DOA estimation of three-dimensional space, that is not only estimated azimuth signals, but also to estimate its pitch angle, of course, also MUSIC algorithm joint estimation for the frequency, the azimuth and elevation.)
- 2016-03-19 10:10:45下载
- 积分：1
