color-correction-techniques

提出了一种新的宽带DOA估计方法:频域子空间正交性测试方法(TOFS:Test of orthogonality of frequency sub- space)。该方法通过同时测试频域信号共同带宽内各频段噪声子空间与阵列流形之间的正交性来进行DOA估计。与宽带相干信号子空间方法不同,TOFS方法不需要任何初始值的预估及聚焦操作。与宽带非相干信号子空间方法也不同,TOFS方法同时测试各频段噪声子空间与阵列流形之间的正交性。本文仿真了TOFS与IMUSIC、CSSM、TOPS的性能比较。仿真结果表明TOFS方法在中等信噪比以上时有较好的性能,且避免了TOPS方法中常出现的伪峰。 (Proposed a new broadband DOA estimation methods: subspace orthogonal frequency domain test methods (TOFS: Test of orthogonality of frequency sub-space). The method by simultaneously testing the frequency domain signal bandwidth of each band noise common sub-orthogonality between space and the array manifold to be DOA estimates. And broadband coherent signal subspace different methods, TOFS method does not require any initial estimate and focusing operation values. And broadband incoherent signal subspace methods are different, TOFS method for simultaneous testing of each band orthogonal noise subspace and the array manifold between. This paper compares the performance TOFS simulation and IMUSIC, CSSM, TOPS is. Simulation results show that the method TOFS better performance when more moderate SNR and spurious peaks TOPS method avoids the often occur.)

说明：  一种利用MATLAB实现的射线追踪算法，估计各种无线系统参数。(# Ray Tracing A ray tracing algorithm implemented using MATLAB that estimates various wireless system parameters.)

matlab 基于PID控制器的BP神经网络系统的仿真(matlab PID controller based on BP neural network system simulation)

核密度估计，可以刻画变量的时间演进动态性，可以反映变量在时间上的变动的整体性( Kernel Density Estimation )

神经网络解决旅行商问题，讨论了矩阵大小对算法稳定性的影响。土木工程领域中，常用于进行结构参数识别等。(Neural network to solve the traveling salesman problem, discussed the impact of the size of the matrix algorithm stability. The field of civil engineering, structural parameters commonly used in identification.)

a simulation example of the passe bande filter

用贝塞尔曲线画圆的代码,效率高，可以调节参数控制(draw circle by bezier )

说明：  无约束一维极值问题中的牛顿法，例程可调，欢迎批评指正(Unconstrained extremal problem in the one-dimensional Newton method, routine adjustable, welcome criticism correction)

matlab从入门到精通,让你更加快速掌握matlab(matlab from entry to the master)

编写一个含QAM传输的发送和接收模块 1)分别采用复基带仿真和实带通仿真两种形式 a) 实带通仿真时, 载波频率为符号率的4倍 b)发端采用滚降系数0.5的根号升余弦滤波器 2)画出Eb/N0=15dB时的接收波形(收滤波前),取100个采样 3)画出发端输出的眼图和收端过匹配滤波后的眼图(画眼图时不加噪声) 统计误符号率和误比特率与Eb/N0的关系,画出曲线, 与理论计算的曲线相对比 (Prepare to send of one with QAM transmission and receiver module 1), respectively, the complex baseband simulation and the real band-pass simulation in two forms a) the real band-pass simulation, the carrier frequency used for the symbol rate of 4 times b) the originator roll-off factor of 0.5 root raised cosine filter, 2) draw Eb/N0 = 15dB when the received waveform (closing filter), take 100 samples) to draw the originator of the output eye diagram and income side of the eye diagram after the matched filter ( draw the eye diagram without noise) statistics symbol error rate and bit error rate and Eb/N0, draw a curve calculated with the theoretical curve compared)