-
OFDM
OFDM,实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。在向B3G/4G演进的过程中，OFDM是关键的技术之一，可以结合分集，时空编码，干扰和信道间干扰抑制以及智能天线技术，最大限度的提高了系统性能。(OFDM)
- 2010-05-21 14:56:54下载
- 积分：1
-
pcode-sh42r8
matlab实现的遗传算法和蚁群算法，结合了JwZIYT算法的优点，解决Agzwzah问题，求其最优解的整个步骤，是个不错的程序，调试没有错误
(Genetic algorithm and ant colony algorithm matlab implementation, combined with the advantages ofJwZIYT algorithm to solve Agzwzah problem, the entire step of seeking the optimal solution, is a good program, no error debugging
)
- 2015-12-26 11:23:18下载
- 积分：1
-
backsub
have not registered DSD
- 2011-12-14 00:46:05下载
- 积分：1
-
FIR_pinlv
FIR滤波器， 设计一个线性相位有限冲激响应低通滤波器，使其满足如下指标：通带边界为2kHz，阻带边界为2.5kHz，通带波纹 =0.005，阻带波纹 =0.005，抽样率为10kHz。采用多尔夫-切比雪夫窗进行设计，进行频谱分析。(FIR filter, design a linear phase FIR low-pass filter to meet the following indicators: passband border to 2kHz, stopband border to 2.5kHz, passband ripple = 0.005, stop-band ripple = 0.005, sampling rate of 10kHz. Used Dorf- Chebyshev window design, spectral analysis.)
- 2012-11-19 22:49:33下载
- 积分：1
-
Weak signal detection
针对强噪声背景中弱信号检测问题，在传统检测方法基础上，提出了基于联合去噪和频率调制的微弱信号检测方法。搭建自相关和小波阈值变换联合去噪系统，极大程度抑制了噪声对检测结果的不利影响。利用频率可调标准信号调制待测信号频率，使得被测信号与检测系统策动力信号的频率差满足检测条件，打破了利用Ｄｕｆｆｉｎｇ 振子检测系统只能检测与系统策动力频率相近信号的限制。(In order to solve the problem of weak signal detection in strong noise background, based on traditional detection methods, puts forward the method of weak signal detection and denoising based on frequency modulation. The self correlation and wavelet threshold transform combined de-noising system can greatly restrain the adverse effect of noise on the detection results. Use adjustable standard signal modulation signal frequency to be measured frequency, the signal detection system and the driving signal frequency difference meet the test conditions, the system can only break detection signal detection and system driving the similar frequency limit by using Duffing oscillator.)
- 2017-12-11 22:09:40下载
- 积分：1
-
AdaptiveTrackDetectionforMultiStaticActiveSonarSys
关于多基地主动声纳中的自动跟踪探测方面的文章来源IEEE(Adaptive Track Detection for Multi-Static Active Sonar Systems)
- 2010-09-13 15:36:34下载
- 积分：1
-
matlabex
matlab 程序
专用于解答多项式 和 自动控制的各类习题
从我们老师那里拿过来的
鼎力推荐(matlab program dedicated to answering various types of polynomials and Automatic Control Exercises from our teachers take over where the full recommended)
- 2008-03-29 13:39:08下载
- 积分：1
-
UnwellLineEquSet-matlab
病态线性方程组的计算题，涉及Gauss消元法、雅可比迭代法、高斯-赛德尔迭代法、最速下降法和共轭梯度法。每一个方法，都编写一个m文件，封装成函数的形式。然后通过总的HilbLineEquSet.m文件来调用执行，画出误差曲线图，得到运行结果。总的Matlab程序流程，如下所示：
病态方程组的计算包括：HilbLineEquSet.m、gauss.m、jacobi.m、gauss_seidel.m、fastest_descend.m和conjugated_grad.m六个文件。
程序执行结果包括：求解结果、迭代次数、迭代误差数据、误差曲线图等。
(Morbid Linear Equations calculation problems involving Gauss elimination method, Jacobi' s iterative method, Gauss- Seidel iterative method, steepest descent method and conjugate gradient method. Each method, all the preparation of an m file, packaged in the form of a function. Then the total HilbLineEquSet.m file to invoke the implementation of draw error curve, to be running results. General Matlab program flow, as follows: the calculation of morbid equations include: HilbLineEquSet.m, gauss.m, jacobi.m, gauss_seidel.m, fastest_descend.m and conjugated_grad.m six documents. Procedures for implementation of the findings include: solving a result, the number of iterations, iterative error data, error curve and so on.)
- 2009-12-10 19:08:10下载
- 积分：1
-
xiaobofenxi
matlab进行小波分析，调用matlab内部函数进行M文件编程(MATLAB wavelet analysis, call the internal function matlab M-file programming)
- 2013-04-27 11:43:36下载
- 积分：1
-
rwavedetection
心电信号R波检测的函数，包括降采样，滤波，希尔伯特包络提取三个预处理步骤。其中R波根据阈值检测，相对不应期要根据具体信号适当调整.(ECG R-wave detection functions, including down-sampling , filtering, Hilbert envelope extracted three pretreatment steps. Wherein R wave detection based on a threshold , the relative refractory period should be adjusted according to the specific signal .
)
- 2013-07-27 10:32:57下载
- 积分：1
