5 papers
Baseband Equivalent Models and Digital Predistortion for Mitigating Dynamic Continuous-Time Perturbations in Phase-Amplitude Modulation-Demodulation Schemes (Expanded version)
Omer Tanovic, Alexandre Megretski, Yan Li +2
We consider baseband equivalent representation of transmission circuits, in the form of a nonlinear dynamical system in discrete time (DT) defined by a series interconn…
Discrete-Time Models Resulting From Dynamic Continuous-Time Perturbations In Phase-Amplitude Modulation-Demodulation Schemes
Omer Tanovic, Alexandre Megretski, Yan Li +2
We consider discrete-time (DT) systems S in which a DT input is first tranformed to a continuous-time (CT) format by phase-amplitude modulation, then modified by a non-linear CT dy…
Separation of Quantization and Control in Optimal Analog to Digital Converters
Mitra Osqui, Alexandre Megretski
In this paper we prove optimality of a certain class of Analog to Digital Converters (ADCs), which can be viewed as generalized Delta-Sigma Modulators (DSMs), with respect to a per…
Lower Bounds on the Performance of Analog to Digital Converters
Mitra Osqui, Alexandre Megretski, Mardavij Roozbehani
This paper deals with the task of finding certified lower bounds for the performance of Analog to Digital Converters (ADCs). A general ADC is modeled as a causal, discrete-time dyn…
One-Dimensional Optimal Analog to Digital Converter Design
Mitra Osqui, Alexandre Megretski, Mardavij Roozbehani
The paper deals with the task of optimal design of Analog to Digital Converters (ADCs). A general ADC is modeled as a causal discrete-time dynamical system with outputs taking valu…