bpsk

基于单音干扰的BPSK通信系统的误码率分析(BPSK communication system based on single-tone interference error rate analysis)

把从光谱仪串口传输过来的数据分解为各自的成分数据(Decomposition of the data over the serial transmission from the spectrometer data for each ingredient)

快衰落多输入多输出信道中，无信道状态信息的酉空时调制。属于信道发射和接收两端均无信道状态信息的非相干空时码。程序包含一个主程序和一个酉空时信号产生子程序，并给出误比特率。(Unitary space-time modulation without channel state information in fast fading MIMO channels. It belongs to the incoherent space-time code with no channel state information at both ends of the channel transmitting and receiving. The programs include a main program and a unitary space-time signal generation subroutine, and gives the bit error rate.)

使用串口采集温度数据，并实时显示温度数据(Serial collected temperature data)

说明：  OFDM技术 北京邮电大学内部讲义 内部资料(OFDM 北邮内部讲义)

说明：  该文件包含对宽带波束形成与窄带波束形成的一些实现方法(This file contains some implementation methods of wideband beamforming and narrowband beamforming)

OFDM（正交频分复用）系统以其抗多径衰落和较高的频带利用率，得到了众多领域的广泛应用。本文就OFDM系统中关键技术之一的信道估计技术进行了介绍。并分别叙述了OFDM系统和信道估计的意义，归纳了信道估计的分类，最后介绍了MMSE、LS及其改进信道估计算法并仿真出结果。(OFDM（orthogonal frequency division multiplexing) has been widely used in many areas for its good resistance to multipath fading and high bandwidth efficiency.In this paper,channel estimation,which is one of the key technologies in OFDM systems,were introduced. Then we discuss the significance of the channel estimation and the classification of channel estimation.Finally,we study the algorithms of channel estimation such as MMSE,LS and LMMSE,and further get the simulation results. )

用DFT对连续时间信号进行谱分析，用DFT定义进行计算，不同抽样频率不同抽样点下的谱分析Matlab实例。(The continuous time signals are analyzed by DFT, and calculated by DFT definition. The Matlab examples are analyzed under different sampling frequencies and sampling points.)

RS485程序,包括接收部分判断校验,有很强的参考价值()

说明：  空域零陷，首先用doa技术估计直达波方向，然后置零，用于直达波消除。(In spatial nulling, DOA technique is used to estimate the direction of direct wave, and then zeroing is used to eliminate direct wave.)