3gwireless

产生16QAM信号，用平方根升余弦滤波器进行脉冲整形，平方根升余弦滤波器产生16-QAM波形波形，画出眼图(16QAM signal of pulse shaping by square root raised cosine filter, the square root raised cosine filter to generate 16-QAM waveform waveform, draw the eye)

主要介绍空中接口物理链路层的无线技术，共分三个部分，首先对主要接口和协议作 简单介绍和描述；然后分别介绍信道与帧；无线信道编码与交织以及LAPDm。(Mainly introduces Wireless technology of air interface in the physical link layer which is divided into three parts. first: a brief introduction and description of the main interfaces and protocols then:Road and frame and last radio channel coding and interleaving and LAPDm .)

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采用BPSK调制技术，用ZF和ZF加并行干扰消除的方法检测系统的误码率。(Using BPSK modulation technique, with the ZF and ZF plus parallel interference cancellation method to detect the BER.)

采用Simulink 平台对OFDM 进行仿真，确定系统的参数，完成参数设置，构建了一个简单的OFDM通信系统。(Using Simulink platform to simulate OFDM, determine the parameters of the system, complete the parameter settings, and build a simple OFDM communication system.)

数组可以存放5个人的姓名，每个姓名包括first name，middle name和last name，输出姓名时，其中middle name只取大写的首字母，利用索引编写程序，使得用户输入last name后，输出姓名的全称。(array can store the names of five individuals, including the names of each first name, middle name and last name, the name of the output, which only middle name from the first uppercase letter, the use of indexing programming, enabling users to import last name, the name of the generic output.)

实现BPSK的载波同步，采用的方法是锁频环，最大似然法频率估计(BPSK carrier synchronization is realized,the method is frequency - locked loop and maximum likelihood frequency estimation)

PSK通信信号盲解调测试程序，final1_1和final1_2为两种不同的产生PSK通信信号的程序，final2_1预估计载波频率，final2_2预估计码元速率，final3进行载波同步，final4进行码元同步，进而解调出原信号。(PSK Blind Demodulation)

BPSK的扩频和调制的matlab程序，其中扩频码为m序列，包含产生m序列的matlab程序。(BPSK spread spectrum modulation matlab program, the spreading code of m-sequence contains sequence matlab program generates m.)

Test for DatagramChannel Source Code for Andriod.