Design and realization of a suboptimum presynchronization filtering strategy for optical receivers

A. Hussain; Jaafar M. H. Elmirghani; Robert A. Cryan

doi:10.1117/12.227819

1 December 1995 Design and realization of a suboptimum presynchronization filtering strategy for optical receivers

A. Hussain, Jaafar M. H. Elmirghani, Robert A. Cryan

Proceedings Volume 2614, All-Optical Communication Systems: Architecture, Control, and Network Issues; (1995) https://doi.org/10.1117/12.227819
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

The optimum presynchronization filter for a pulse position modulation (PPM) signal is composed of a matched filter in cascade with a derivative network. This paper addresses the problem of realizing such a filter for detecting the temporal position of a pulse used in the optical fiber PPM scheme. Firstly, a matched filter is realized from a time domain specification on the received pulse shape. Secondly, a derivative network is used to shape the pulse. The effect of the derivative network on the pulse shape is investigated by varying the value of the differentiating capacitor C_d and observing changes in the timing variance and jitter wrong slot error (JWSE) probability. The paper shows that there exist an optimum value of C_d for which the pulse shape is as close as possible to the true derivative and one which offers significant improvement both in the timing variance and JWSE probability compared to that of the matched filter.

Citation Download Citation

A. Hussain, Jaafar M. H. Elmirghani, and Robert A. Cryan "Design and realization of a suboptimum presynchronization filtering strategy for optical receivers", Proc. SPIE 2614, All-Optical Communication Systems: Architecture, Control, and Network Issues, (1 December 1995); https://doi.org/10.1117/12.227819

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