Abstract
Polarization shift keying (PolSK) is a new modulation technique, it uses the state of polarization of an electromagnetic wave carrier as the information bearing parameter. This paper describes a modulation/demodulation method based on PolSK, and a high-speed laser communication system, and verifies its feasibility through theoretical analysis and computer simulation. Studies have shown that the based on the parameters of laser polarization modulation and demodulation techniques have unique advantages, such as in anti-atmospheric interference, higher data rate and lower bit error rate, greatly improving the reliability of communication. In addition to polymorphism modulation can be achieved by this modulation method, which has a data capacity. In the future, the PolSK modulation and differential demodulation method has a broad space for development and application prospects in the space laser communications.
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