Abstract:Objective Pulse position modulation, which is a modulation method obtained from the onoff keying (OOK) after encoding, has the characteristic of a high energy efficiency ratio, which increases peak optical power by reducing the duty cycle to overcome the adverse effects of factors such as atmospheric turbulence and dark counts on the signal. It also increases the signaltonoise ratio, giving it better channel interference immunity, which is important in a wide range of applications in atmospheric and even deeps… Show more
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