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In a multiple transmit antenna, single antenna per receiver downlink channel with limited channel state feedback, we consider the following question: given a constraint on the total system-wide feedback load, is it referable to get low-rate/coarse channel feedback from a large number of receivers or high-rate/high-quality feedback from a smaller number of receivers? Acquiring feedback from many receivers allows multi-user diversity to be exploited, while high-rate feedback allows for very precise selection of beamforming directions. We show that there is a strong preference for obtaining high-quality feedback, and that obtaining near-perfect channel information from as many receivers as possible provides a significantly larger sum rate than collecting a few feedback bits from a large number of users.

it describes the image analysis using matlab

用MATLAB实现线性平滑滤波器和中值滤波器(To realize the linear smoothing filter and median filter using MATLAB)

4阶经典Runge-Kutta格式解常微分方程,Romberg(龙贝格）法求函数的积分,三阶样条插值（一阶导数边界条件）,定步长梯形法求函数的积分,矩阵A的伴随矩阵, Lagrange插值法数值求解,Newton迭代法解非线性方程f(x)=0(Fourth-order Runge-Kutta classic format solution of ordinary differential equations, Romberg (Romberg) method for function points, third-order spline interpolation (first derivative boundary conditions), fixed-step trapezoidal method for integrating functions, matrix A adjoint matrix, Lagrange interpolation method for numerical solution, Newton iterative method for solving nonlinear equations f (x) = 0)

信号EMD分解与重构，特征频带内信号重构(EMD signal decomposition and reconstruction, features the band signal reconstruction)

整个SVM工具包 全部软件及调用的dll问价，内附说明用法(SVM toolｂｏｘ )

本程序实现Lena图像的压缩传感，测量矩阵为哈达玛测量矩阵，重构算法采用OMP重构算法(This procedure Lena image compression sensing, measurement matrix is ​ ​ Hadamard measurement matrix, reconstruction algorithm using OMP reconstruction algorithm)

matlab 中具体OFDM过程，包含各种QAM调制方式，以及信道，编码，还有大量仿真图(OFDM matlab specific process, including various QAM modulation and channel coding, as well as a large number of simulation map)

仿真MIMO平坦衰落信道的MATLAB程序 很好用(simulation MIMO flat fading channel using MATLAB good)

稀疏信号的重构算法：IST算法，OMP算法，Lasso算法，StOMP算法，TwIST算法(Sparse signal reconstruct algorithms)