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Locating Data Frames in Direct-Detection Optical Communication Systems

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2 Author(s)
Georghiades, C.N. ; Washington University, St. Louis, MO ; Snyder, Donald L.

The maximum-likelihood rule for locating a frame-synchronization pattern in a direct-detection optical communication system employing eitherQ-ary pulse-position modulation or on-off keying is identified. We show that equivalent performance for the simple correlation and postdctection-correlation rules used in practice can require substantially more than a 3 dB increase in signal power over that required using the maximum-likelihood rule.

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Communications, IEEE Transactions on  (Volume:32 ,  Issue: 2 )