On the timing problem in optical PPM communications.Investigation of the effects of imperfect timing in a direct-detection (noncoherent) optical system using pulse-position-modulation bits. Special emphasis is placed on specification of timing accuracy, and an examination of system degradation when this accuracy is not attained. Bit error probabilities are shown as a function of timing errors, from which average error probabilities can be computed for specific synchronization methods. Of significant importance is shown to be the presence of a residual, or irreducible error probability, due entirely to the timing system, that cannot be overcome by the data channel.
Document ID
19720028475
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Gagliardi, R. M. (Southern California, University Los Angeles, Calif., United States)