Adaptive temporal decimation algorithm with dynamic time window

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Improvements in the mechanical structure of the linear switched reluctance motor

Author name used in this publication: Norbert C. CheungRefereed conference paper2007-2008 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

An efficient recursive shortest spanning tree algorithm using linking properties

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HUBBLE SPACE TELESCOPE OBSERVATIONS AND GEOMETRIC MODELS OF COMPACT MULTIPOLAR PLANETARY NEBULAE

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Dynamic conductance of mesoscopic waveguides

We report a theoretical investigation of dynamic conductance G(), for general ac frequency , of two-dimensional mesoscopic waveguides whose transport is characterized by antiresonances. We calculate G() by numerically evaluating nonequilibrium Green's functions. By tuning the ac frequency we observe photon-assisted resonant transport as well as a gradual smearing out of the antiresonances. The antiresonance causes the dynamic response to vary between capacitive-like behavior to that of the inductive-like behavior. © 2001 American Institute of Physics.published_or_final_versio

Channel adaptive fair queueing for scheduling integrated voice and data services in multicode CDMA systems

CDMA (code division multiple access) systems are critical building blocks of future high performance wireless and mobile computing systems. While CDMA systems are very mature for voice services, their potentials in delivering high quality data services are yet to be investigated. One of the most crucial component in an advanced wideband CDMA system is the judicious allocation of bandwidth resources to both voice and high data rate services so as to maximize utilization while satisfying the respective quality of service requirements. Specifically, in a multicode CDMA system, the problem is to intelligently allocate codes to the users' requests. While previous work in the literature has addressed this problem from a capacity point of view, the fairness aspect, which is also important from the users' point of view, is largely ignored. In this paper, we propose a new code allocation approach that is channel adaptive and can guarantee fairness with respect to the users' channel conditions. Simulation results show that out approach is more effective than the proportional fair approach.published_or_final_versio

On channel-adaptive fair multiple access control

Multiple access control (MAC) of the uplink in a wireless mobile computing system is one of the most important resource allocation problems in that the response time and throughput of user applications (e.g., wireless Web surfing) are critically affected by the efficiency of the MAC protocol. Compared with a traditional MAC problem (e.g., the wireline Ethernet), there are two important new challenges in a modern wireless network: (1) multimedia data with diverse traffic requirements are involved; and (2) the wireless channel has a time-varying quality for each user. Furthermore, a more prominent user requirement is fairness among different users, possibly with different traffic demands. While some protocols have been suggested to handle multimedia data and/or tackling the time-varying channel, there are a number of drawbacks in these existing protocols. The most notable drawback is that the channel model is rather unrealistic - just using a two state Markov chain instead of relying on accurate models of multipath fading and shadowing effects. Another common deficiency is that fairness is ignored. In this paper, we propose to use a new notion of fairness that can capture a realistic channel model, and to integrate a fair queueing scheduling algorithm in a MAC protocol to optimize performance while maintaing fairness among users regardless of their channel states and data types.published_or_final_versio

Control of brain metastases with alectinib in anaplastic lymphoma kinase-rearranged lung cancer

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Molecular Line Observations of the Carbon-rich Circumstellar Envelope CIT 6 at 7 mm Wavelengths

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Influenza B/Streptococcal co-infection complicated by organizing pneumonia

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