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早在60年代,Viterbi和Jacob等人就分析了量化脉位体制QPPM的理论极限。但这种体制如何在工程上实现,尤其是对采用这种体制的实际系统的性能在很长时期内未见有人分析。1980年,文献[1]从量化调位的角度提出了QPPM体制的工程模型,称为PPK体制,[1]计算了它的功率效率,结果指出,PPK体制的功率效率(用β值表示)比目前常用的PCM-PSK体制小。[1]在国内遥测技术界引起了争论,[2]、[3]、[4]对
As early as the 1960s, Viterbi and Jacob et al. Analyzed the theoretical limits of the QPPM for quantized pulse regimes. But how this kind of system is implemented in engineering, especially for the actual system using this system, has not been analyzed for a long time. In 1980, Literature [1] put forward the engineering model of QPPM system from the point of view of quantitative adjustment, called PPK system [1], calculated its power efficiency, and pointed out that the power efficiency of PPK system PCM-PSK than the current system of small. [1] In the domestic telemetry community has caused controversy, [2], [3], [4] right