loops
RSS loopsExtended Loops for Distant Phones and Fax Machines, Higher Ringing Voltage and Loop Current
White Paper Applications exist that require extended loops between the analog phones and the gateway. Enterprises are turning to Voice-over-IP (VoIP) and IP telephony solutions for voice communications in corporate and branches so that they can reap the... [13 Jun 2008]
Testing and Stabilizing Feedback Loops in Today's Power Supplies
White Paper Feedback loops aren't what they used to be. Here are some practical tips for dealing with the problems presented by modern topologies. Gone are the days of a single feedback path, an external or discreet error amplifier, and a direct connection... [03 Jul 2008]
Register Allocation for Modulo Scheduled Loops: Strategies, Algorithms and Heuristics
White Paper Software pipelining is an important instruction scheduling technique for efficiently overlapping successive iterations of loops and executing them in parallel. This technical report studies the task of register allocation for software pipelined... [10 Apr 2008]
Towards Building H.323-Aware 3G Wireless Systems: H.323 Control Loops and Application Adaptation to Wireless Link Conditions
White Paper Both 3G wireless networks and H323-based multimedia applications provide control loops. This paper first investigates control loops in H.323-based multimedia applications, identifies wireless network events/conditions that might trigger them, and... [23 Mar 2005]
EC confirms law to unbundle local loops by year-end
News The European Commission today announced that all EU member states' telcos must unbundle their local loops by the end of the year. As reported yesterday on silicon.com, this moves the deadline set by some European regulators - including Oftel... [12 Jul 2000]
Journeymen's Tools: Data Review Macro FreqAll: Using Proc SQL List Processing With Dictionary.Columns to Eliminate Macro Do Loops
White Paper This paper provides a data review macro FreqAll which illustrates using Proc SQL reading Dictionary.Columns to replace macro %do loops. The SAS R macro language is simple, yet powerful. List Processing with Proc SQL is also simple, yet powerful. [02 Jun 2007]
On the Correlation Between Route Dynamics and Routing Loops
White Paper Routing loops are caused by inconsistencies in the routing state of the network. This paper presents a methodology that utilizes a prior knowledge of loops to study the correlation between routing loops and routing events that could have caused them. [03 Jul 2008]
Understanding and Troubleshooting Routing Loops in NetCache Appliance Deployments
White Paper Since version 5.0, the NetCache appliance software has been able to detect and report routing loops in the network where it is deployed. This paper explains what routing loops are, how they are detected, and gives some examples and steps on how to... [03 Jul 2008]
Practical Testing Techniques for Modern Control Loops
White Paper New power supply designs are becoming harder to measure for gain margin and phase margin. This measurement is important because step load testing does not measure critical parameters such as conditional stability. [03 Jul 2008]
Shared Loops: How Incumbent Local Exchange Carriers (ILECs) and Competitive Local Exchange Carriers (CLECs) can Deliver Competitive Digital Subscriber Line Access Multiplexer (DSLAM) Applications
White Paper The provisioning of digital subscriber line (DSL)-based service by competitive local exchange carriers (CLECs) and voiceband service by incumbent local exchange carriers (ILECs) on the same loop is frequently called line sharing. [25 Feb 2004]
Vicious loops and a black day for e-marketplaces
News In a statement, the regulator said it would "extend the existing price controls on BT's residential prices because BT continues to have market power in the provision of telephony services to residential customers". [01 Feb 2001]
A Control Approach to Bandwidth Management in Networked Control Systems
White Paper Bandwidth allocation techniques for control loops closed over communication networks are based on static strategies that ensure average control performance at the expenses of permanently occupy the available bandwidth. [11 Jul 2008]
New Techniques for Testing Power Factor Correction Circuits
White Paper This paper describes how to test the feedback loops in power factor correction (PFC) chips for stability. Power factor correction circuits often have two feedback loops. Both loops can have stability problems, and both loops can be tested for... [03 Jul 2008]
Testing Power Factor Correction Circuits for Stability
White Paper In a power factor correction circuit there are two feedback control loops. This paper discusses the techniques necessary to measure the stability of each of these loops and specifies necessary equipment and procedures to perform these tests. [25 Feb 2004]
Cache Optimization for Coarse Grain Task Parallel Processing Using Inter-Array Padding
White Paper In multigrain parallelization, coarse grain task parallelism among loops and subroutines and near fine grain parallelism among statements is used in addition to the traditional loop parallelism. This paper describes inter-array padding to minimize... [04 Mar 2008]
