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To enable ubiquitous end-to-end quality of service over IP networks expanding to rural areas, we examine resource allocation problems of a MAC layer for an OFDM MIMO wireless base station (BS) using multiuser beamforming. We compare two linear beamforming techniques, zero-forcing (ZF-BF) and minimum mean square error (MMSE-BF). To guarantee minimum bandwidth and low packet delay in an environment...
This brief studies the predictive controller design of networked systems with communication delay and data loss. A networked predictive control scheme is employed to compensate for communication delay and data loss actively rather than passively. Based on analysis of the closed-loop networked predictive control systems, a design strategy of the predictive controller is proposed. The designed predictive...
We present an adaptive QoS system that seeks to maximize end-to-end success through learning algorithms that take queue depths as input to control weighted fair queue provision. Utilizing an analytical model we generate queue depth and E2E success data for various levels of load and WFQ provision and generate a WFQ provision surface for two classes of real time traffic using neural network techniques...
In previous work we presented the Triage protocol, an end-to-end (E2E) QoS approach, where packet scheduling is biased by priority class, the severity of distress in meeting E2E QoS goals, and the likelihood of meeting those goals if service rates are altered. In this work, we present improvements to the heuristics used to determine the Triage distress in the per-hop behavior, simulation results showing...
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