039_bus

北工大matlab电子课件，陆续还有好多，很全的，希望大家下个痛快(err)

研究无线通信中的调制编码的性能，分析编码调制在信道中的性能。(Study of wireless communication in the modulation coding performance, analyzing the performance of coded modulation in the channel.)

In this simulink model , baseband 8-ary PAM detection is simulated .A half-sine pulse shaped PAM signal is given as input to the detector.The received signal is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The 8-ary PAM signal transmitted is recovered at the detector output.

MLP in neural nethwork

Assume that a direct sequence spread spectrum system uses the Barker code of length 7 (N=7) as its spreading sequence. a. Randomly generate 8 symbols (d0~d7) from the set {+1,-1}. b. If each chip of the Barker code is denoted as cj, j=0~6, spread each symbol di by the Barker code. (Please refer to p. 17 of the slides.) Use “stem” to plot the signals before spreading and after spreading

matlab开发的，基于行作用技术的代数迭代算法反演代码。可用于层析成像(matlab developed algebraic algorithms based on the role of technology line inversion code. Can be used for tomographic imaging)

em算法运用于有散射体的信道模型下实现参数估计（los距离）(em algorithm applied to a scattering channel model to achieve parameter estimation (los distance))

support vector classification machine ％ soft margin ％ uses "kernel.m" ％ ％ xtrain: (Ltrain,N) with Ltrain: number of points N: dimension ％ ytrain: (Ltrain,1) containing class labels (-1 or +1) ％ xrun: (Lrun,N) with Lrun: number of points N: dimension ％ atrain: alpha coefficients (from svcm_train on xtrain and ytrain) ％ btrain: offest coefficient (from svcm_train on xtrain and ytrain) ％ ％ ypred: predicted y (Lrun,1) containing class labels (-1 or +1) ％ margin: (signed) separation from the separating hyperplane (Lrun,1(support vector machine classification% s oft margin% uses "kernel.m"%% xtrain : (Ltrain, N) with Ltrain : number of points N : % ytrain dimension : (Ltrain. 1) containing class labels (-1 or 1)% xrun : (Lrun, N) with Lrun : number of points N : % atrain dimension : alpha coefficients (from svcm_train on xtrain and ytrain)% btrain : offest coefficient (from svcm_train on xtrain and ytrain)%% ypred : predicted y (Lrun. 1) containing class labels (-1 or 1)% margin : (signed) separation from the separating hyper plane (Lrun, 1)

这是Victor C.Chen"The Micro-Doppler Effect in Radar With DVD"的书还有它的Matlab的程序。(This is Victor C.Chen s book "The Micro-Doppler Effect in Radar With DVD" with Matlab codes.You have to put the codes on the Matlab folder that you can excute it.)

matlab m文件，用于读取遥感图像，可以直接调用，十分方便(matlab m file for reading remote sensing images, can be called directly, very convenient)