QAM

说明：  基于simulink，对二进制基带信号使用bpsk调制解调，进行仿真与性能分析.(the simulink of bpsk)

cdma系统 LMS算法 盲自适应多用户检测(cdma systems LMS adaptive multiuser detection algorithm)

说明：  虚拟串口工具，可以在普通电脑上虚拟成对串口，方便进行串口编程的本地调试(Virtual Serial Port Tool, which can be virtual paired serial ports on ordinary computers, facilitates the local debugging of serial port programming.)

说明：  数字滤波器的代码，可用于运行仿真IIR与FIR类滤波器。(The code of the digital filter can be used to run simulation IIR and FIR type filters.)

说明：  适应多个模式的rs编码，Verilog，选择对应的多项式(RS coding adapted to multiple modes.)

说明：  This is HC-05 Bluetooth module information

51单片机MODBUS主机通信程序，平台KEIL4。使用MODBUS SLAVE测试成功。(51 MCU MODBUS host communication program, platform KEIL4. The MODBUS SLAVE test was successful.)

turbo码BPSK仿真，对全matlab 程序。(turbo code BPSK simulation, matlab whole process.)

说明：  s29gl256s nor flash 源代码(s29gl256s device source code)

Multiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power ratio (PAPR), which may severely affect the power efficiency of RF power amplifiers. In this paper, we propose a simple method to reduce the PAPR of MIMO-OFDM signals based on the use of unused subcarriers. Instead of processing the signals at each transmitter separately, a peak cancelling signal is generated at one antenna and is then applied to all the others with only simple modifications. Simulation has shown that a minimum 2 dB reduction in PAPR can be achieved for all transmit signals using this approach. As the signal processing is nearly all done at a single transmitter, repetition of the operations at each transmitter is avoided, and therefore the overall cost of the system can be significantly reduced.