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Demonstration of upstream flexible 2-/4-PAM formats for practical PON deployments
Proceedings article published in 2016 by
R. Robbert van der Linden,
V. D. R. Linden,
R. Van der Linden,
Xin Yin 
,
N. C. Tran,
Nc Karl Tran,
Johan Bauwelinck,
E. Eduward Tangdiongga,
Amj Ton Koonen,
A. M. J. Koonen
,
N. C. Tran,
Nc Karl Tran,
Johan Bauwelinck,
E. Eduward Tangdiongga,
Amj Ton Koonen,
A. M. J. Koonen
Abstract
Adaptive 2-/4-PAM modulation in PONs leverages the distribution of optical path losses to increase capacity. Upstream 2-/4-PAM burst transmission is demonstrated with a selectable fixed 4-tap FIR-filter, improving the performance of each gain mode of the burst-mode receiver