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The roles of ADC ENOB and AGC clipping effect are investigated in coherent QAM optical transmission system by experiments and simulations, under different transmission effects. Potential implementation risks and optimization for AGC and ADC are presented.
We investigate the performance of linear equalization combined with MLSE in long-haul transmission. In the nonlinear regime with high launch powers Q-factor improvement up to 1.4 dB is demonstrated with a quaternary state model.
This part focuses on the design of controllers for the recovery of target loop transfer function or sensitivity and complimentary sensitivity functions for general nonminimum phase discrete time systems. For general systems, loop transfer recovery is not completely feasible although there exists considerable amount of freedom to shape the inevitable recovery error. Here the necessary design constraints...
A complete analysis of loop transfer recovery (LTR) for general nonstrictly proper, not necessarily minimum phase discrete time systems is presented. Three different observer based controllers, namely, 'prediction estimator', and full or reduced order type 'current estimator' based controllers, are used. The analysis corresponding to all these three controllers is unified into a single mathematical...
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