Zbuildpi

take home code for the paper

OFDM系统中的QPSK调制映射和调制解映射(QPSK modulation OFDM system mapping and modem mapping)

this code uses newtons method but in the form for function to solve non linear equations. use all the file available in the rar file to run the code.

research project for cryptography RSA

实现功能 1) 在用户界面设置录音时长并实时录音 2) 调节放音幅度、播放原声并进行时域、频域绘图 3) 对收集的声音进行倒放处理并播放 4) 对收集声音进行回声处理并播放，比对时域波形 5) 对收集声音进行回响处理并播放，比对时域波形 6) 对经过回声处理的声音进行回音消除并比对时域波形 7) 采用自适应滤波器消除采集声音中的环境噪音 8) 设计相应的滤波器组成均衡器对收集的声音进行处理并播放 9) 男女声识别 10) 设计参数可调的滤波器对采集的声音进行处理 (1) in the user interface to set the recording length and real-time recording 2) to adjust sound, played acoustic amplitude and time domain, frequency domain mapping 3) to upend the collection of sound and play 4) to collect sound echo processing and playback, than in the time domain waveform 5) to collect sound echoes, processing and playback, than in the time domain waveform 6) to echo and treated with echo s voice than in the time domain waveform 7) using adaptive filter to eliminate ambient noise in acquisition voice 8) to design the corresponding filter to process the voice of equalizer to collect and display 9) NanNvSheng recognition 10) tunable filter design parameters for voice processing )

基于matlab的音乐均衡器，可以实时改变均衡器参数，并实时显示频谱和波形(Music equalizer based on matlab, can real-time change equalizer parameters, and real-time display of spectrum and waveform)

Demonstrate rs decoding in frequency domain

非下采样轮廓波变换，NSCT变换，主要用于图像去噪，效果非常不错(Nonsubsampled contourlet transform, NSCT transform, mainly for image denoising, the effect is very good)

结合具体应用，以2倍抽取为例，简要分析了多相滤波的基本原理及具体实现方法，并附带了matlab代码，从实验结果可以看出多相滤波可以实现与传统FIR滤波相同的功能。(Combine concrete application, take 200 extracts as an example, the synopsis analyzes the radical principle that the polyphase filters and concretely carries out a method, and supplementary matlab code, can discover polyphase to filter as a result to carry out to filter same function with traditional FIR from the experiment.)

分别列出BP网络与som网络的代码，通过运行后可以看出同一种问题在不同网络下的处理差别。(A breakdown of BP network and som network code, by running after the same kind of problem can be seen in the different networks of processing differences.)