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This note studies the output regulation problem for a class of heterogeneous nonlinear multi-agent systems under the directed topology. By introducing the internal model to each controlled agent, the problem is first converted into the distributed stabilization of a group of transformed augmented subsystems. A novel kind of distributed observer is further designed for each subsystem. By sharing the...
This paper presents the design of a 4th-order multi-stage feedforward operational amplifier (op amp) for applications in continuous-time bandpass delta-sigma modulators. On the system-level, a design procedure is proposed to determine the transconductance of each stage. On the transistor-level, current-reusing is emphasized to achieve power efficiency. Simulated in a 65 nm CMOS process, the op amp...
A powerful path computation element is a must for the next-generation IP-over-Optical networks to support on-demand service provisioning crossing layers. The main purpose of path computation in multi-layer networks (MLN) is to enable traffic engineering (TE) under a multitude of constraints. A common objective of such traffic engineering is to minimize resource utilization while satisfying all the...
This paper presents an overview of a control plane architecture for multi-layer, multi-domain networks. Additionally, we report on experiences with implementation, deployment, and use of this architecture on operational networks.
In this paper we describe a framework for internetworking heterogeneous high-performance networks. We believe GMPLS and Web services will be the proper technologies in such internetworking while the latter will be more widely accepted. We describe Web services for multi-layer, multi-domain topology description and advertisement, routing, path computation, and signaling functionalities as inspired...
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