Chapter 6 summarizes all the works of the thesis and put forward some Suggestions to research optical PPM modulation and demodulation technique in the future.
第六章综述了本文的研究工作，提出了进一步研究光ppm调制解调技术的设想和建议。
The phase-lock technique is widely used in many fields, such as modulation and demodulation circuit and frequency synthesizer circuit.
锁相技术在调制和解调、频率合成电路等很多领域应用极其广泛。
Based on the theory of modulation and demodulation, a key technique to realize the real-time transmission of multi-path local signals has been studied, as well as according to circuit.
研究了采用调制与解调方法实现多路现场信号实时传输的关键技术，设计了相应的调制与解调电路，解决了多路现场信号实时传输过程中存在的问题。
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