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说明：  里面包含四种情境的信道估计模型 比较了他们的优缺点(There are four scenarios in the channel estimation model to compare their advantages and disadvantages)

说明：  conversion of a matrix into lower triangular matrix

读取SHT20的数据发送到主控STM32F103vet6(Read data from SHT20 and send it to master STM32F103vet6)

this is for calculate qam and it is very good to practice so good u can play

说明：  QPSK调制仿真与分析，使用matlab仿真实现QPSK相干调制与解调，通过AWGN信道，画出误比特率曲线(Generate digital baseband signal, add AWGN Gaussian white noise to transmit in the channel, detect the original baseband signal, draw theoretical and simulation error rate curve, QPSK modulation simulation and analysis, use matlab simulation to realize QPSK coherent modulation and demodulation, draw error rate curve through AWGN channel)

opnet simulation of random access in CDMA network

利用MATLAB实现多用户的扩频通信的发送和接受，程序可以直接跑，不需要改动！(The use of MATLAB implementation of multi-user spread spectrum communication send and receive, the program can be directly run, no changes!)

Simulation 16QAM-OFDM with mmeory Polynomial PA (Simulation 16QAM-OFDM with mmeory Polynomial PA)

异质结双极型晶体管的设计与仿真，运行在silvaco(The design of the heterojunction bipolar transistor and simulation)

this is a paper for pcf beam splitter!