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it is a very simple and helpful document and source code for image compression

说明：  这个是利用图像分解和Logistics混沌序列可以对图像先进行加密然后进行隐藏在另一个图像中再进行解密(This is the use of image decomposition and Logistics chaotic sequence can be encrypted on the image first and then proceed to hide in another image and then decrypt)

The overall objective for LTE is to provide an extremely high performance radio-access technology that offers full vehicular speed mobility and that can readily coexist with HSPA and earlier networks. OFDM/OFDMA technology is introduced for the LTE downlink, supporting very high data rates of up to 300Mbps while Single-Carrier FDMA (SC-FDMA) is used in the uplink with data rates of 80Mbps possible. Additionally, LTE supports operation both in paired and unpaired spectrum (FDD and TDD) using channel bandwidths of approximately 1.4MHz up to 20MHz. The frequency domain scheduling can be done in OFDMA. One of the main challenges in OFDMA is the high peak-to-average radio of the transmitted signal, which requires linearity in the transmitter. The linear amplifiers have low efficiency therefore, OFDMA is not an optimized solution for a mobile uplink where the

说明：  4096阶QAM调制解调 matlab仿真(matlab 4096 QAM modulation)

说明：  基于matlab的桁架有限元分析，对理解位移法的有限元分析非常有帮助(finite element analysis with matlab)

运用有限差分方法求解二阶边值问题，x" + a1*x’ + a0*x = u with x(t0) = x0, x(tf) = xf(solve BVP2 by the finite difference method)

bq2084 dekoder hex dump

用matlab编写的世界地图和美国地图的函数文件，用于绘制matlab环境下的世界地图和美国地图(World map and the map of the United States using matlab function files used to draw the Matlab environment map of the world and the United States map)

通信系统里面的2FSK调制模块，simulink仿真(2FSK modulation)

A muitistage tap filter in simulink. Phase dirtoin and phase sitortion shown in teh simulation results(A muitistage tap filter. Phase dirtoin and phase sitortion shown in teh simulation results)