Xiaofeng Wang

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This paper examines a class of real-time control systems in which each control task triggers its next release based on the value of the last sampled state. Prior work [1] used simulations to demonstrate that self-triggered control systems can be remarkably robust to task delay. This paper derives bounds on a task’s sampling period and deadline to quantify(More)
Multiagent learning is a key problem in AI. In the presence of multiple Nash equilibria, even agents with non-conflicting interests may not be able to learn an optimal coordination policy. The problem is exaccerbated if the agents do not know the game and independently receive noisy payoffs. So, multiagent reinforfcement learning involves two interrelated(More)
This paper examines event-triggered data transmission in distributed networked control systems with packet loss and transmission delays. We propose a distributed eventtriggering scheme, where a subsystem broadcasts its state information to its neighbors only when the subsystem’s local state error exceeds a specified threshold. In this scheme, a subsystem is(More)
European Journal of Information Systems (2009) 18, 281–284. doi:10.1057/ejis.2009.27 Agile systems development methods emerged as a response to the inability of previous plan-driven approaches to handle rapidly changing environments (Highsmith, 2002). Originating from the so-called ‘light-weight’ methods and promoted through the publication of the Agile(More)
A semidefinite programming (SDP) relaxation approach is proposed to solve multiuser detection problems in systems with M -ary quadrature amplitude modulation (MQAM). In the proposed approach, the optimal M -ary maximum likelihood (ML) detection is carried out by converting the associated M -ary integer programming problem into a binary integer programming(More)
Acknowledgement I would like to thank my mentor Prof. Dr. Krešimir Veseli´c for introducing me to the exciting field of relative error analysis, for devoting to me a lot of his time, and for sharing with me so many of his ideas. I also thank my colleagues Eberhard Pietzsch, Zlatko Drmač und Xiaofeng Wang for the possibility to check my ideas in numerous(More)
This paper studies distributed networked systems with data dropouts and transmission delays. We propose a decentralized eventtriggering scheme, where a subsystem broadcasts its state information to its neighbors only when the subsystem’s local state error exceeds a specified threshold. The novelty of this scheme is its complete decentralization, which means(More)