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LIFO-Backpressure Achieves Near Optimal Utility-Delay Tradeoff
Queueing Dynamic Control LIFO scheduling Lyapunov analysis Stochastic Optimization
2016/1/23
There has been considerable work developing a stochastic network utility maximization framework using Back-pressure algorithms, also known as MaxWeight. A key open problem has been the development of ...
Delay-Aware Predictive Network Selection in Data Offloading
Delay-Aware Predictive Network Selection Data Offloading
2016/1/22
We tackle the network selection problem in operator-initiated mobile data offloading by considering both the predictive and non-predictive cases. For the non predictive case, we use the Lyapunov optim...
Effect of Proactive Serving Reduces User Delay Exponentially
Proactive serving user delay service system queueing
2016/1/22
In online service systems, delay experienced by a user from the service request to the service completion is one of the most critical performance metrics. To improve user delay experience, in this pap...
Proactive Serving Decreases User Delay Exponentially
Proactive Serving User Delay Exponentially
2016/1/22
In online service systems, the delay experienced by a user from the service request to the service completion is one of the most critical performance metrics. To improve user de-lay experience, recent...
Using delay to quench undesirable vibrations
Differential-delay equations Hopf bifurcation Perturbation methods
2015/8/27
A van der Pol type system with delayed feedback is explored by employing the two vari-able expansion perturbation method. The perturbation scheme is based on choosinga criticalvalue for the de-lay cor...
Throughput-Delay Trade-off in Wireless Networks
Stochastic processes/Queueing theory Combinatorics Information theory Statistics
2015/8/17
Gupta and Kumar (ZW) intrnduced a random network model for studying the way throughput scales in a wireless network when the nudes are fixed, and showed that the throughput per source-destinatinn pair...
An FPGA Family Optimized for High Densities and Reduced Routing Delay
FPGA Family Optimized High Densities Reduced Routing Delay
2015/8/14
An FPGA Family Optimized for High Densities and Reduced Routing Delay.
Optimal Throughput-Delay Scaling in Wireless Networks–Part II:Constant-Size Packets
Throughput-Delay Scaling Wireless Networks Constant-Size Packets
2015/8/12
In Part I we characterized the optimal throughput-delay trade-off in static wireless networks as D(n) = Θ(nT(n)), where D(n) and T(n) are the average packet delay and throughput in a network of n node...
Optimal Throughput-Delay Scaling in Wireless Networks–Part I:The Fluid Model
Queueing theory random walks scaling laws throughput scaling throughput-delay trade-off wireless networks
2015/8/12
Gupta and Kumar (2000) introduced a random model to study throughput scaling in a wireless network with static nodes, and showed that the throughput per source-destination pair is Θ 1/√n log n. Gross...
Analysis of Carrier Phase and Group Delay Biases Introduced by CRPA Hardware
Carrier Phase Group Delay Biases Introduced CRPA Hardware
2015/6/26
The benefits afforded by Controlled Reception Pattern Antennas (CRPAs) in multipath and interference mitigation are well documented, and they find use in many applications today. As such, CRPAs are be...
Positive Forms and Stability of Linear Time-Delay Systems
Time-Delay Systems Positive Forms and Stability
2015/6/19
We consider the problem of constructing Lyapunov functions for linear differential equations with delays. For such systems it is known that stability implies that there exists a quadratic Lyapunov fun...
Global Stability Analysis of a Nonlinear Model of Internet Congestion Control with Delay
Nonlinear Model Stability Analysis
2015/6/19
In this paper we address global stability of a model for the TCP/AQM congestion control protocol. This model represents the dynamics of a single link and single source, and consists of a nonlinear dif...
Hadoop平台下基于资源预测的Delay调度算法
Hadoop平台 Mapreduce模型 资源调度 资源预测 Delay调度
2013/1/26
针对Delay算法的不合理等待问题, 提出一种基于资源预测的Delay调度算法（RFD）, 该算法基于对资源可用性的预测方法合理地调度作业. 实验结果表明, 在Hadoop机群一般应用场景下, 该调度算法与已有算法相比, 在保证作业本地化计算Map任务比例相近的同时, 将作业平均运行效率提高28.8%, 明显提高了Mapreduce作业的执行效率.
Experimental demonstration of two methods for controlling the group delay in a system with photonic-crystal resonators coupled to a waveguide
two methods controlling group delay system photonic-crystal resonators coupled waveguide
2011/8/10
We measure the group delay in an on-chip photonic-crystal device with two resonators side coupled to a waveguide.We demonstrate that such a group delay can be controlled by tuning either the propagati...
Real-Time Ultra-broadband Group Delay Monitoring through Quasi-Incoherent Processing
Fiber Bragg gratings Fiber optics communications Fiber optics components Bragg reflectors Dispersion compensation devices
2011/5/25
Simple method for real-time ultra-broadband group delay measurement of photonic devices is reported, demonstrating accurate group delay ripple monitoring of a 10m-long chirped fiber grating over the f...