NeedYou

本文件是我做的关于PCM的编程实现方案，希望能对大家的通信仿真有所帮助(this document is what I am doing on the PCM programming proposal in the hope that we can help Communication Simulation)

对原始码元序列进行基带成型，采用的是根升余弦滚降滤波器，可以更改参数变成升余弦滚降滤波器(Baseband shaping the source sequence, using root raised cosine roll-off filter, you can change the parameters into a raised cosine roll-off filter)

一个关于温度场的Matlab的源程序可以查询不同坐标的温度(A temperature field on Matlab source temperature can query different coordinate)

matlab code for the envelope detector in analog communications.

这是通过hfss软件设计915m超高频偶极子天线工程 此设计只通过仿真验证 没有制作实物验证(It is designed to 915m UHF dipole antenna hfss software engineering through the design just does not make physical verification by simulation)

说明：  OFDM是将高速串行数据分成成百上千路并行数据,并分别对不同的载频进行调制,这种并行传输体制大大扩展了符号的脉冲宽度,提高了抗多径衰落的性能。同时,在传统的频分复用方法中,各子载波之间的频谱互不重叠,频谱利用率较低。而采用OFDM技术,一个OFDM符号之内包括多个经过调制的子载波的合成信号,每个子载波在频谱上相互重叠,这些频谱在整个符号周期内满足正交性,因而在接受端可以保证无失真恢复,从而大大提高频谱利用率。(OFDM divides high-speed serial data into hundreds of parallel data channels and modulates different carrier frequency separately. This parallel transmission system greatly expands the pulse width of symbols and improves the performance of anti-multipath fading. At the same time, in the traditional method of Frequency Division multiplexing, the spectrum between the sub-carriers does not overlap each other, the spectrum utilization ratio is low. In the case of OFDM, an OFDM symbol consists of multiple modulated sub-carriers, each of which overlaps in the spectrum, which is orthogonal throughout the symbol period, thus, no distortion recovery can be ensured at the receiving end, thus greatly improving the spectrum utilization ratio.)

说明：  Este código extrae los bigramas de un texto...

fill in the user structure for a core dump..

Radio Access Network Emulator for LTE

采用matlab编写的常微分方程的数值解法，有算例，以及改进龙格库塔方法。(The numerical solution of ordinary differential equation by using Matlab prepared, with examples, and the improvement of the Runge Kutta method.)