Cryan, R.A. and Sibley, Martin J.N. (2006) Optical fibre PPM using a PIN-FET receiver and central decision detection. Microwave and optical technology letters, 48 (4). pp. 791-794. ISSN 0895-2477

An analysis is presented, for the first time, for an optical fibre PPM system employing central decision detection. Firstly, an ideal matched filter in conjunction with a noise-whitening filter is considered and secondly a raised cosine filter to eliminate intersymbol interference is modelled. It is shown that the latter offers superior performance. The results for a 155.52 Mb/s system predict a sensitivity of -57.6 dBm, an improvement of 6 dB over an equivalent PCM system

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