MATLAB code to test SPIM approach for SS

MATLAB code for test spectrum sensing algorithm based on statistical processing of instantaneous magnitude (SPIM). The associated SCRIPTs allow: Generating different signals to check the method, FHSS, LFM, CW Pulse, etc. Plot the generated signal, the detection threshold and compare it with the ideal detection. Determine the errors for the different hypotheses based on SNR. Calculate errors in the determination of the amplitude and frequency for different SNRs. Evaluate the probability of detection with different threshold control values A and U. Compare the errors in detection for the SPIM method and the energy detector. Plot the values of the TPR FPR rates to calculate the ROC curve. Determines the MAD PDF of the instantaneous phase and the average instantaneous amplitude for comparison.

基于瞬时幅度统计处理（SPIM）的频谱感知算法测试用MATLAB代码。相关脚本支持以下功能：生成FHSS、LFM、CW脉冲等多种信号以验证该方法；绘制生成的信号、检测阈值，并与理想检测结果进行对比；基于信噪比（SNR）确定不同假设下的误差；计算不同SNR下幅度与频率测定的误差；评估不同阈值控制值A和U下的检测概率；对比SPIM方法与能量检测器的检测误差；绘制真阳性率（TPR）和假阳性率（FPR）以计算受试者工作特征（ROC）曲线；确定瞬时相位的中位数绝对偏差概率密度函数（MAD PDF）及平均瞬时幅度，以供对比分析。