Massarella, Alistair J. and Sibley, Martin J.N. (1991) Experimental results on suboptimal filtering for optical digital pulse-position modulation. Electronics letters, 27 (21). pp. 1953-1954. ISSN 0013-5194

Original practical and theoretical results ( = 1.523 µm) are presented for both optimal and suboptimal detection of digital PPM. When operating with 16 slots of 20 ns duration, the sensitivity was measured to be −46.6 dBm for optimal detection, and −45.9 dBm for suboptimal detection. It is concluded that suboptimal filtering significantly reduces receiver complexity, and results in a degradation in sensitivity of only 0.7 dB

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