simpson

In this paper, we present a novel data-based method for simultaneous Maximum Likelihood (ML) symbol and carrier-frequency o畇et estimation in Orthogonal frequencydivision multiplexing (OFDM) systems. Statistical properties introduced by the cyclic pre痻, a guard space between OFDM symbols, provide su眂ient information about the unknown parameters. It is shown that the redundancy introduced by this cyclic pre痻 allows the estimation to be performed without additional pilots. Simulations show that the performance of the frequency estimator is applicable in a tracking mode while the timing estimation can be used in an acquisition mode.

N-Dimensional Cardinal(Catmull-Rom) Spline Interpolation

改进型的蚁群算法，能够快速求解多目标规划。(Improved ant colony algorithm to quickly solve multi-objective planning.)

OFDM系统的简单代码，便于初学者理解，设置了N=128个信道，传送1,0的随机数，并加入fading和AWGN noise(OFDM system simple codes, for beginners to be understood that the channel 128 is provided, fading and AWGN noise added)

This function compute the sun position (zenith and azimuth angle at the observer location) as a function of the observer local time and position.

冈萨雷斯的《数字图像处理》作业，自适应门限的中值滤波器用Matlab实现，用于图像增强，去噪(Gonzalez' s " digital image processing" operations, adaptive threshold median filter realization using Matlab for image enhancement, noise reduction)

MUSIC算法的方位角估计以及频率估计 精度可调(Azimuth Estimation and Frequency stimation of MUSICAlgorithm Accuracy adjustable)

LDPC 基于似然函数的译码算法函数，采用MATLAB编写，可以直接调用(LDPC decoding algorithm based on similar function the likelihood function, using MATLAB to prepare, you can directly call)

6N137 高速光耦隔离芯片 应用于各种需要隔离场合(6N137 optocoupler isolated high-speed chips in a variety of situations need to be isolated)

Database management systems