According to the usage requirements of close distance reception of communication signals,this paper researches and develops a portable receiver based on the universal software radio peripheral(USRP)platform.The portable receiver uses US-RP as the RF front end to complete the extraction of if in-phase quadrature(IQ)data,and realizes signal detection,identifica-tion and demodulation on a PC.Using signal source injection and external signal reception test methods,and the test results show that the portable receiver can effectively fulfil the communication signal reception,the detection time for new signals is less than 1 s.Under the condition that the signal-to-noise ratio is large than or equal to 15 dB,the accuracy of signal modula-tion type recognition is more than 90％.
关键词
信号检测/信号识别/信号解调/软件无线电/便携式接收机
Key words
signal detection/signal identification/signal demode/software defined radio/portable receiver
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