GhostPoints

ofdm的通信系统的平台，希望对大家有所帮助(ofdm communication system platform, we want to help)

The sourcecode is about optical character recognision using matlab.

Code division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, which is where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this to be achieved without undue interference between the users CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code). Each user in a CDMA system uses a different code to modulate their signal. Choosing the codes used to modulate the signal is very important in the performance of CDMA systems. The best performance will occur when there is good separation between the signal of a desired user and the signals of other users.

非常不错的书籍，《微粒群算法》供8章和2个附录，依次上传第5章(Very good books, Particle Swarm Optimization for Chapter 8 and Appendix 2, followed by From Chapter 5)

优点：1.对于信噪比高的信号滤波效果好； ％ 2.对于边沿的保护强过阈值滤波，不会产生阈值滤波情况下的过于平滑与Gibbs现象。 ％缺点：1.由于对边沿信号没做任何处理，所以边沿可能会有脉冲噪声保留下来； ％ 2.计算相关系数中，如果计算出来的小波系数点位置偏差大，则相关系数计算受影响； ％ 3.需要迭代运算，迭代的噪声能量阈值选取很重要，这里以开始段无信号处估计噪声； ％ 4.需要迭代运算，所以运算量比阈值法大； ％ 5.受分解层次影响，在大尺度上小波系数点位置偏差更大，相关系数计算不准确。 ％需要具体调整的地方：1.分解的尺度；()

The PLS method -- partial least squares projections to latent structures -- and its applications in industrial RDP (research, development, and production).(The PLS method-- partial least squares projections to latent structures -- and its applications in industrial RDP (research, development, and production).)

苍穹神剑.txt为古龙的处女作。虽是第一部作品，但思路开阔，天马行空的剧情。以尽露无遗。(Heavens Excalibur. Txt to Gu Long' s debut. Although this is the first film, but open-minded, epoch plot. To Jin Lu exhaustive.)

对图像加模糊，并用倒谱法实现对所得模糊图像的模糊参数估计(Additive fuzzy image, and cepstral method from fuzzy images of the fuzzy parameter estimation)

这是一个用来对超声图像进行滤波的算法，是我按照论文自己编的，效果与论文中的一样。是stick filter。(This is the one used on the ultrasound image filtering algorithm is in accordance with papers their own series, the effect paper. Stick the filter.)

In this document has been introduced how to solve different partial differential equations in Matlab programming language.Everbody can solve Heat Conduction Equation, Helmholtz Equation, Laplace Equation and Wave Equation for different initial and boundary conditions. This document is elemantary of to understand how to solve partial differential equations with the aid of a porgramming language.