OFDM_16QAM

1）设计Butterworth型音频抗混叠滤波器； 2）参数： 下通带频率300Hz；上通带频率3400Hz； 下阻带频率280Hz；上阻带频率3600Hz； 通带最大衰减0.3dB； 阻带最小衰减40dB； 3）采用一低通滤波器和一高通滤波器级联； 4）分别确定LPF和HPF的性能指标； 5）求出两滤波器的系统函数和频率响应，并画出其幅频特性曲线； 6）求整个滤波器的系统函数和频率响应，并画出其幅频特性曲线。(1) the design of Butterworth-type audio anti-aliasing filter 2) parameters: passband frequency of 300Hz on pass-band frequency 3400Hz under the stop-band frequency of 280Hz on stop-band frequency 3600Hz passband maximum attenuation of 0.3dB minimum stopband attenuation of 40dB 3) the use of a low-pass filter and a high-pass filter cascade 4) separately to determine the performance of LPF and HPF target 5) to derive two-filter system function and frequency response, and draw its increase frequency characteristic curve 6) for the entire filter system function and frequency response, and draw its amplitude-frequency characteristic curve.)

说明：  使用LS算法对OFDM的信道进行估计，该算法估计行道计算量小，但是容易受到噪声的影响。(The OFDM algorithm is used to estimate the channel of OFDM. The algorithm estimates that the calculation amount of the road is small, but is susceptible to noise.)

my first big assignment

雷达空域相干干扰抑制方法，包含MCMV,CTMV,SPT几种方法(Coherent interference suppression in airspace, including MCMV, CTMV,SPT,etc.)

说明：  TDMA的opnet仿真模型，比较简单，适合初学者(TDMA the OPNET simulation model is relatively simple, suitable for beginners)

包括极化码基于CRC的SCL译码算法，Lazy Copy机制，定点量化，代码和程序说明文档(Polar code with fast-list-decoder)

opnet Ad hoc仿真源程序,自己构建的路由协议和网络模型(opnet Ad hoc simulation source code, to build its own routing protocol and network model)

说明：  心电信号预处理方法研究，内含MATLAB仿真代码与研究文档。(Research on ECG signal preprocessing method, including MATLAB simulation code and research documents.)

在高斯白噪声信道和莱斯信道下调制方式为qpsk的基本通信系统的误码率仿真 (In the Gaussian white noise channel and Rice channel qpsk modulation method is the basic communication system BER simulation)

kasami序列的生成程序及相关论文，带64位的生成程序，供学习者使用。(kasami sequence generation)