基于usrp的频谱能级测量，通过调整频率来实现对不同carry frequency 的能级检测 -usrp based energy detector

matlab 的语音检测，识别出声音并进行基音的监测-recognize the voice and analyze the energy of it

认知无线电系统中采用能量检测频谱感知matlab代码，比较协作式感知时不同虚警概率下的结果- 认知无线电系统中采用能量检测频谱感知matlab代码，比较协作式感知时不同虚警概率下的结果 In cognitive radio system, the energy detection spectrum sensing matlab code is used to compare the results of different false alarm probabilities in coo