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本文提出一种利用窄带调频无线电信道传输低速数据的新的软件计数检测法.该方法中,基带信号的调制一解调全部应用软件实现.对字同步、数据码和位同步码分别可用窄、宽脉冲串行传输.因此,检测数据码的主要任务在于正确识别数据码与位同步码,采用多次取样计数,以最佳判决准则决定判决门限.同时,定量地分析了数据码元取样次数对位同步失效概率的影响.从而,对取样速率的确定提供了理论依据.
This paper proposes a new software counting detection method using narrowband FM radio channel to transmit low-speed data. In this method, all the application of modulation and demodulation of the baseband signal is realized. For word synchronization, data code and bit synchronization code, Wide pulse serial transmission.Therefore, the main task of detecting data code is to correctly identify the data code and bit synchronization code, the use of multiple sample count, the decision threshold decision with the best decision.At the same time, quantitative analysis of the number of data symbol sampling The impact of bit synchronization failure probability.Therefore, the determination of the sampling rate provides a theoretical basis.