project

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.)

Paper on hetrogenous network

说明：  在信号发送后，接收方需要实现位同步才能正确解码(after signal is sent, receiver need bit syn to decode correctly)

线性调频连续波的雷达测距测速的两次FFT(Linear frequency modulation continuous wave radar ranging and speed estimation by twice FFT.)

802 11e协议,在ns仿真中使用,包括使用方法()

生成雷达的脉冲信号，包括单脉冲信号生成、矩形方波的生成、脉冲信号的生成，用以识别、分选(Generating radar pulse signal for identification and sorting)

极化码的matlab实现，包括了完整的编码以及译码程序(polar coding and decoding)

Performance Evaluation of DWT

说明：  对2发1收的STBC-MIMO系统 （Alamouti空时码），分析2发射天线分别受到独立瑞利信道下的误码率性能曲线， 并与相同条件下单天线曲线进行对比分析(MIMO,SPACE TIME CODE)

西门子S7300、S7400plc和组态王通讯常用的几种通讯链路(Siemens S7300, S7400plc and King several common communication link communications)