ESPRIT-MUSIC

MATLAB科学计算与工程分析源代码源程序3(MATLAB scientific computing and engineering analysis of the source code source 3)

说明：  一种基于信息熵的Matlab端点检测算法，抗噪性能比较好(Matlab based on information entropy of the endpoint detection algorithm, better anti-noise performance)

OFDM很容易在具有时延扩展或等效频率选择性的信道上使用。 频率选择性信道的特征在于延迟扩展或相干带宽，其测量频率中的信道去相关。 相干带宽与均方根（RMS）时延扩展成反比。 通过选择与信道相干带宽相关的子载波间隔，OFDM可以用于将频率选择性信道转换成频率平坦子信道的并行集合。 适合于平坦衰落信道的技术可以直接应用。(OFDM is simple to use on channels that exhibit time delay spread or, equivalently, frequency selectivity. Frequency selective channels are characterized by either delay spread or coherence bandwidth which measures the channel decorrelation in frequency. The coherence bandwidth is inversely proportional to the root-mean-square (rms) delay spread. By choosing the sub-carrier spacing properly in relation to the channel coherence bandwidth, OFDM can be used to convert a frequency selective channel into a parallel collection of frequency flat subchannels. Techniques that are appropriate for flat fading channels can then be applied in a straight forward fashion.)

说明：  简要介绍了OFDM的发展状况及基本原理, 文章对OFDM 系统调制与解调技术进行了解析，得到了OFDM 符号的一般表达式，给出了OFDM 系统参数设计公式和加窗技术的原理及基于IFFT/FFT 实现的OFDM 系统模型，阐述了运用IDFT 和DFT 实现OFDM 系统的根源所在,重点研究了理想同步情况下,保护时隙(CP)、加循环前缀前后和不同的信道内插方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系统模型的基础上,用MATLAB语言实现了传输系统中的计算机仿真并给出参考设计程序。最后给出在不同的信道条件下,研究保护时隙、循环前缀、信道采用LS估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。(Generation of OFDM Communication System)

说明：  programme for markov

用矩量法计算细线天线的场分布，允许用户自行制定天线长度等参数．(Using moment method calculation of the field distribution of thin wire antennas, allowing users to establish their own parameters such as antenna length.)

filter for removal of impulse noise using fuzzy filter

TRUSS FEM used to solve a general truss problem, all the user has to do is to change the inputs. it been very useful

高斯牛顿函数的最优化算法matlab源程序。。。(Function by the Gauss-Newton optimization algorithm matlab source code)

introduction of fisher