Doppler-spectrum-of-radio-channel

Diameter协议结构原理,Diameter协议在IMS的基本应用 (Diameter descriptor)

包含有数字通信课程实验大作业报告与代码。完成的OFDM的收发包含：1.卷积编码、2.自动增益控制、3.极大似然判决、4.QPSK收发、5.帧检测等，代码在MATLAB2016b环境下编译通过(It contains the report and code of the experiment assignment for the course of digital communication. The completed OFDM transceiver includes: 1. convolutional coding, 2. automatic gain control, 3. maximum likelihood decision, 4. QPSK transceiver, 5. frame detection, etc. The code is compiled and passed in MATLAB2016b environment.)

principle_of_communication……matlab(principle_of_communication.matla)

说明：  pi/4-dqpsk,可实现FPGA与电脑自发自收(pi/4-dqpsk,It can realize the self receiving of computer and FPGA)

超宽带UWB,包括 uwb mdl UWB model - open this to begin uwb_lib mdl Libr()

wince傳送簡訊的範例,利用vs 2005編譯開發(wince newsletter send an example, using vs 2005 to compile the development of)

说明：  bpsk调制仿真，可直接用 1、数字调制方法 数字调制就是把数字基带信号的频谱搬移到高频处，形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控（ASK）、频移键控（FSK）、绝对相移键控（PSK）、相对（差分）相移键控（DPSK）。在接收端可以采用想干解调或非相干解调还原数字基带信号。 数字信号的传输方式分为基带传输和带通传输。然而，实际中的大多数信道（如）无线信道具有丰富的低频分量。为了使数字信号在带通信道中传输，必须用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。(1, digital modulation method Digital modulation is the transfer of the spectrum of a digital baseband signal to a high frequency to form a bandpass signal suitable for transmission in the channel. The basic digital modulation methods are amplitude keying (ASK), frequency shift keying (FSK), absolute phase shift keying (PSK), and relative (differential) phase shift keying (DPSK). At the receiving end, the digital baseband signal can be restored by using dry demodulation or non-coherent demodulation. Digital signal transmission methods are divided into baseband transmission and bandpass transmission. However, most channels in practice, such as wireless channels, have rich low frequency components. In order for a digital signal to be transmitted in a band channel, the carrier must be modulated with a digital baseband signal to match the signal to the characteristics of the channel.)

详细分类介绍了AM,BPSK,BFSK,PAM信号的循环谱与循环自相关函数的生产，具有可操作性。(The production of cyclic spectrum and cyclic autocorrelation function of AM, BPSK, BFSK and PAM signals is introduced in detail, and it is operable.)

Agent技术在智能交通中的应用,只是一个雏形,适合感兴趣的人进一步的改进()

说明：  pcm编码 有关线性,A律,mu律的pcm编码的matlab实现(Matlab implementation of pcm coding for pcm coding related to Linear, A-Law and mulaw)