hist33

自己写的信噪比计算工具snr2.m snr2(s2ana,fs,f0,fl,fh,bl,bh) s2ana: 待分析信号 fs:采样频率 f0:信号频率 [fl,fh]:信号能量分散带(Their signal to noise ratio calculation tool written in snr2.m snr2 (s2ana, fs, f0, fl, fh, bl, bh) s2ana: to be analyzed signal fs: sampling frequency f0: signal frequency [fl, fh]: the signal with energy dispersive)

压缩包包含matlab数值分析的源代码和演示ppt，希望对您有所帮助~~~~(Archive contains the source code matlab numerical analysis and presentation ppt, I hope for your help ~ ~ ~ ~)

:数字水印技术在数字产品的版权保护中起着非常重要的作用。概括了数字水印技术的现状及其基本原理,并 分析了变换域数字水印算法的优势,详细阐述了DCT 水印嵌入和提取算法的原理和步骤。最后在Matlab 平台下对DCT 数 字水印算法进行了仿真,仿真结果证实了DCT 算法的强健性和鲁棒性。(: digital watermarking technology in the digital copyright protection products played a very important role. Summarized the digital watermarking technology and the status of the basic principles and transform domain analysis of digital watermarking algorithm advantages, elaborate on the DCT watermark embedding and extraction algorithm theory and steps. Finally in Matlab platform for DCT digital watermarking algorithm for the simulation, Simulation results confirmed the DCT are strong and robust.)

说明：  Chau Yuen的酉空时码例程， 瑞利衰落信道下，采用4发1收，比较了不同信噪比下的BER和SER(Chau Yuen Unitary space-time code routines, Rayleigh fading channel, using 4-fat one collection, comparison of different signal to noise ratio of BER and SER)

用MATLAB中的SIMULINK工具建立直接扩频的仿真模型并进行仿真(The SIMULINK with MATLAB tools for the establishment of direct spread spectrum simulation model and simulation)

信号信噪比计算，验证对比了matlab中的多种信噪比计算方法(compare the calculation of SNR )

信号在信道进行传输时，经常会出现串扰，采用基于最大似然序列估计（MLSE）的电子色散均衡器的方法，克服光纤通信中的由各种色散引起的码间干扰。 研究基于最大似然序列估计（MLSE）的均衡器，采用维特比算法实现，用matlab仿真出采用MLSE后的性能指标（眼图和误码率）的提升。 (Signal transmission channel, often occur crosstalk, based on the maximum likelihood sequence estimation (MLSE) method for electronic dispersion equalizer, overcome the optical fiber communication in a variety of dispersion caused by intersymbol interference. Research Based on the maximum likelihood sequence estimation (MLSE) equalizer, using the Vitby algorithm, the performance index using MLSE after matlab simulation (eye diagram and bit error rate) promotion.)

较为复杂的捷联惯导导航，加入了姿态、位置、位置、速率信息。(SINS more complex navigation, joined the attitude, position, position, velocity information.)

说明：  求信号处理中的峰值信噪比，学通信与仪器的都可用(peak signal noise ratio)

小波变换处理，用于处理图像，同事评价处理后的图像质量(Wavelet processing )