列主元法求线性方程组

LDPC encoder and decoder design in MATLAB

水平集图像处理程序,利用一个新的变分公式进行图像处理，效果很好(Level set image processing program,we present a new variational formulation for geometric active contours that forces the level set function to be close to a signed distance function, and therefore completely eliminates the need of the costly re-initialization procedure.)

matlab与数据库连接，选取数据库中的目标红外谱图，提取其波峰，并把波峰值返回到数据库中，存入新建的表中(matlab with the database connection, select the target database, infrared spectrum, extraction of the crest and the wave peak to return to the database, into the new table)

说明：  MATLAB图像处理模块的设计，基于GUI的设计(MATLAB image processing module design is based on the design of GUI)

WIMAX_WZ_withencoding:信道估计，相位噪声补偿，频偏估计，编解码都有 WIMAX_WZ_withoutencoding：在上面的工程基础上，去掉编解码部分 WIMAX_WZ_withoutprocessing：在上面的工程基础上，再去掉相位噪声补偿，频偏估计 WIMAX_WZ_withoutprocessing2：在上面的工程基础上，改用新的前导和导频联合信道估计方案,参考文档《基于802_16d标准的OFDM信道估计技术的研究与实现.kdh》 因为白噪声信道仿真只能体现QPSK调制和RS-CC编码的性能，需要仿真SNR可控的SUI信道，来估计信道均衡的性能。 在多普勒频偏fd>100Hz时，联合信道估计性能才比前导估计强，否则前导估计性能更优。对于600MHz中心频率，要求收发机相对运动速度大于180km/h，这种情况出现的概率不大(WIMAX_WZ_withencoding: channel estimation, phase noise compensation, frequency estimation, the codec has WIMAX_WZ_withoutencoding: the project on the basis of the above, remove the codec section WIMAX_WZ_withoutprocessing: the project on the basis of the above, then remove the phase noise compensation, offset estimation WIMAX_WZ_withoutprocessing2: In the project on the basis of the above, use the new leader and pilot joint channel estimation scheme, the document " Standards-based 802_16d OFDM channel estimation and implementation of technology .kdh" because white noise channel simulation only reflects the QPSK modulation and RS-CC coding performance requires simulation SNR controllable SUI channel, to estimate the performance of channel equalization. When Doppler shift fd> 100Hz, joint channel estimation performance was stronger than the leading estimate, otherwise better estimation performance leader. For 600MHz center frequency transceiver requirements relative velocity )

THIS FILE DESCRIBE THE CALCULATION OF BIT ERROR RATE (BER) OF A MODULATED SYSTEM AND THE PLOT OF THE BER WITH SIGNAL TO NOISE RATIO (SNR) TO EVALUATE THE SYSTEM BEHAVIOR

计算机辅助设计与仿真的经典算例，解决一类仿真问题(Computer-aided design and simulation of the classic examples, solving a class of simulation problems)

说明：  直线偏移代码，已知多边形顶点坐标，可以将多边形各边沿其法线方向平移距离然后得到新的多边形顶点。(Linear shift code, known polygon vertex coordinates, can be the edge of the polygon shift its normal direction and then get a new polygon from the vertex.)

神经网络与adaboost的强分类器，利用adaboost算法提升神经网络的分类性能，十分好用的强分类器(The neural network adaboost strong classifier)

这是一个半桥谐振的感应加热电源，里面有simulink文件和用于寻找谐振点和最大功率输出的matlab文件(This is a half-bridge resonant induction heating power supply, which has simulink file and is used to find the resonance point and the maximum power output of the matlab file)