Sa Photonics, Inc.

Todd Matthew Drullinger

A PPM-modulated signal is based on a format comprising (i) N data slots per symbol period, (ii) guard slots separating the data slots, and (iii) the symbols are encoded by the position of pulses within the data slots. Timing synchronization of the receiver to an incoming PPM-modulated signal is achieved as follows. The incoming PPM-modulated signal is processed to generate slot detection signals, which are indicative of a presence of a pulse in a corresponding one of the N data slots. A timing correction signal is generated based on a difference between (a) accumulated slot detection signals for receiver data slot, and (b) accumulated slot detection signals for receiver data slot N. Timing of the receiver is adjusted based on the timing correction signal.

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Redwood City, CA, United States of America

Todd Matthew Drullinger