Results 1 - 10 of 682

Improving Reliable Transport and Handoff Performance in Cellular Wireless Networks

by Hari Balakrishnan, Srinivasan Seshan, Randy H. Katz , 1995
"... TCP is a reliable transport protocol tuned to perform well in traditional networks where congestion is the primary cause of packet loss. However, networks with wireless links and mobile hosts incur significant losses due to biterrors and handoff. This environment violates many of the assumptions mad ..."
Abstract - Cited by 389 (22 self) - Add to MetaCart
made by TCP, causing degraded end-toend performance. In this paper, we describe the additions and modifications to the standard Internet protocol stack (TCP/IP) to improve end-to-end reliable transport performance in mobile environments. The protocol changes are made to network-layer software

Cache Decay: Exploiting Generational Behavior to Reduce Cache Leakage Power

by Stefanos Kaxiras, Zhigang Hu, Margaret Martonosi - in Proceedings of the 28th International Symposium on Computer Architecture , 2001
"... Power dissipation is increasingly important in CPUs ranging from those intended for mobile use, all the way up to highperformance processors for high-end servers. While the bulk of the power dissipated is dynamic switching power, leakage power is also beginning to be a concern. Chipmakers expect tha ..."
Abstract - Cited by 280 (26 self) - Add to MetaCart
-application basis by choosing appropriate decay intervals individually for each cache line. Our proposed adaptive policies effectively reduce L1 cache leakage energy by 5x for the SPEC2000 with only negligible degradations in performance. 1

Pipeline gating: speculation control for energy reduction

by Srilatha Manne - In Proceedings of the 25th Annual International Symposium on Computer Architecture , 1998
"... Branch prediction has enabled microprocessors to increase instruction level parallelism (ILP) by allowing programs to speculatively execute beyond control boundaries. Although speculative execution is essential for increasing the instructions per cycle (IPC), it does come at a cost. A large amount o ..."
Abstract - Cited by 288 (3 self) - Add to MetaCart
show up to a 38 % reduction in wrong-path instructions with a negligible performance loss (   ¢¡¤ £). Best of all, even in programs with a high branch prediction accuracy, performance does not noticeably degrade. Our analysis indicates that there is little risk in implementing this method in existing

Power Excursion Aware Routing in GMPLS-based WSONs

by F. M. V. Ramos, A. Giorgetti, F. Cugini, P. Castoldi, J. Crowcroft, I. H. White
"... Abstract: A routing scheme is proposed for GMPLS-based WSONs to mitigate the effects of power transients due to WDM link failures. Simulations show that power transients are considerably reduced with negligible degradation of network resource utilization. ..."
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Abstract: A routing scheme is proposed for GMPLS-based WSONs to mitigate the effects of power transients due to WDM link failures. Simulations show that power transients are considerably reduced with negligible degradation of network resource utilization.

A Simple Technique for Islanding Detection With Negligible Nondetection Zone

by Member, IEEE H H Zeineldin , Fellow, IEEE James L Kirtley Jr
"... Abstract-Although active islanding detection techniques have smaller nondetection zones than passive techniques, active methods could degrade the system power quality and are not as simple and easy to implement as passive methods. The islanding detection strategy, proposed in this paper, combines t ..."
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Abstract-Although active islanding detection techniques have smaller nondetection zones than passive techniques, active methods could degrade the system power quality and are not as simple and easy to implement as passive methods. The islanding detection strategy, proposed in this paper, combines

The Design, Implementation, and Evaluation of a Compiler Algorithm for CPU Energy Reduction

by Chung-Hsing Hsu, Ulrich Kremer - IN PROCEEDINGS OF ACM SIGPLAN CONFERENCE ON PROGRAMMING LANGUAGE DESIGN AND IMPLEMENTATION , 2003
"... This paper presents the design and implementation of a compiler algorithm that effectively optimizes programs for energy usage using dynamic voltage scaling (DVS). The algorithm identifies program regions where the CPU can be slowed down with negligible performance loss. It is implemented as a sourc ..."
Abstract - Cited by 125 (6 self) - Add to MetaCart
This paper presents the design and implementation of a compiler algorithm that effectively optimizes programs for energy usage using dynamic voltage scaling (DVS). The algorithm identifies program regions where the CPU can be slowed down with negligible performance loss. It is implemented as a

Assessment Of Speaker Verification Degradation Due To Packet Loss In The Context Of Wireless Mobile Devices

by Nicholas W. D. Evans, John S. Mason, Roland Auckenthaler, Robert Stapert , 2002
"... accuracy caused by two independent forms of speech signal degradation common in mobile communications. The two forms are packet loss in the communications system and ambient noise at the wireless device. The effects of these degradations are assessed independently on a common database of 2000 speake ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
speakers. Baseline verification performances in terms of equal error rates (EER) show negligible degradation until over 75% of test feature vectors are lost. The EER grows from 3% to just 5% when the loss reaches 88%. In contrast, adding a relatively small amount of noise to the test speech (15dB SNR

Evaluating Responses to Land Degradation Mitigation Measures

by unknown authors
"... ABSTRACT: The main factors affecting environmental sensitivity to degradation are soil, vegetation, climate and management, through either their intrinsic characteristics or by their interaction on the landscape. Different levels of degradation risks may be observed in response to particular combina ..."
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combinations of the aforementioned factors. For instance, the combination of inappropriate management practices and intrinsically weak soil conditions will result in a severe degradation of the environment, while the combination of the same type of management with better soil conditions may lead to negligible

Evaluating Responses to Land Degradation Mitigation Measures

by unknown authors
"... ABSTRACT: The main factors affecting environmental sensitivity to degradation are soil, vegetation, climate and management, through either their intrinsic characteristics or by their interaction on the landscape. Different levels of degradation risks may be observed in response to particular combina ..."
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combinations of the aforementioned factors. For instance, the combination of inappropriate management practices and intrinsically weak soil conditions will result in a severe degradation of the environment, while the combination of the same type of management with better soil conditions may lead to negligible

Electrical Characterization and Reliability Analysis of HfO2-TiO2-Al MOSCAPs

by First A. Shibesh Dutta, Second B. Sivaramakrishnan R, Third C. Sundar Gopalan, Fourth D, Balakrishnan Shankar
"... Abstract � MOSCAPs of various combinations of Hafnium oxide and Titanium oxide of varying thickness with Aluminum as gate electrode have been fabricated and electrically characterized. The effects of voltage stress on the I-V characteristics for prolonged time durations have been studied and compare ..."
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and compared. Results showed hard breakdown and negligible degradation of reliability under stress. T
Results 1 - 10 of 682