loop
RSS loopComparison of a Single-loop Digital Controller to a DeltaV Multi-Loop Controller
White Paper Most of today's single or dual loop microprocessor based controllers are very capable from a computational viewpoint. Considering the experience of Nebraska and their engineering subcontractors, these controllers will likely do a good job for... [03 Jul 2008]
Optimum Feedback Amplifier Design for Control Systems
White Paper Many designers think of control system feedback loop compensation only in terms of stable or unstable. In reality, there is an optimum error amplifier transfer function for any given loop crossover frequency and phase margin. [03 Jul 2008]
Next Generation Networks - Reaching the Customer
White Paper White paper exploring the need to consider more than just the access methods to capitalise on the unbundling of the local loop. This white paper explores the fact that xDSL is just one factor in the exploitation of access to the copper local loop. [03 Jul 2008]
Multiplexing Derived Voice Calls Over Baseband
White Paper Voice over Digital Subscriber Loop (DSL) solutions promise the ability to multiplex packet or cell based voice calls, using digital subscriber loop transmission technologies, over a single subscriber pair simultaneously supporting baseband voice... [03 Jul 2008]
New Techniques for Testing Power Factor Correction Circuits
White Paper It discusses measurement techniques, stability guidelines, and loop bandwidth considerations for a range of manufacturers and integrated circuits (ICs), with emphasis on the new ICs developed recently. [03 Jul 2008]
Next-Generation Solutions for Existing POTS Networks
White Paper Because the large majority of these lines currently provide copper-loop-based POTS telephony services, the ability to integrate next-generation IP services into the traditional loop access infrastructure becomes a key enabler for success. [03 Jul 2008]
T1 Voice Tutorial - OPX: POT Line to Remote Phone
White Paper It also takes the ~25mA loop current that indicates the off hook /on hook condition, and the ~100 VAC ring voltage and converts them into a 2 bit binary representation called signal bits. The FXS card converts the digital voice back to analog and... [03 Jul 2008]
Latency Performance of Various HLA RTI Implementations
White Paper The Spring 2001 SISO paper number 01S-SIW-014 discusses and provides results of this Hardware-in-the Loop (HWIL) closed-loop test using the RTTC Cold Gas rocket motor test facility, the High Level Architecture (HLA), and a real-time" missile... [03 Jul 2008]
Spectral Compatibility of Digital Subscriber Line (DSL) Systems Tutorial
White Paper The tutorial also includes an overview of the spectral compatibility of the different DSL services deployed in the loop plant. Included are discussions on the loop-plant environment, cable models, crosstalk models, descriptions of the various DSL... [03 Jul 2008]
Case Study - DTC Communications Inc.
White Paper As a result of broadband offerings, such as DSL, catching on with an increasing number of customers, DTC was challenged to implement a simpler and more economical solution than currently possible with its Nortel DMS-100 central office switches... [03 Jul 2008]
mhz: Anatomy of a Micro-Benchmark
White Paper To run the benchmark long enough for timing to be accurate, mhz executes each expression in a loop. To minimize the loop overhead the expression is repeated a hundred times. Mhz is a portable ANSI/C program that determines the processor clock speed... [03 Jul 2008]
Multicast with Cache (Mcache): an Adaptive Zero-Delay Video-on-Demand Service
White Paper This paper presents a closed-loop (demand-driven) approach towards VoD services, called multicast with caching (Mcache). Servers use multicast to reduce bandwidth usage by serving multiple requests using a single data stream. [03 Jul 2008]
DeltaV Inspect and How it Reduces Process Variability
White Paper Inspect continuously monitors loop variability and determine the magnitude of potential control improvements. DeltaV Inspect provides the unprecedented capability to automatically identify under-performing loops. [03 Jul 2008]
Experimental Evaluation of Combined Effect of Coherent Rake Combining and SIR-Based Fast Transmit Power Control for Reverse Link of DS-CDMA Mobile Radio
White Paper The combined effect of coherent Rake combining using the Weighted MultiSlot Averaging (WMSA) channel estimation filter and closed-loop fast Transmit Power Control (TPC) in the 4.096 Mchip/s Direct Sequence Code Division Multiple Access (DS-CDMA... [03 Jul 2008]
Single Carrier and OFDM Modulation: Their Suitability for Broadband Fixed Wireless Access Systems
White Paper The choice of modulation technique for Wireless Local Loop is an important factor in the efficiency and economics of broadband wireless access systems. Currently, some equipment manufacturers are choosing Othogonal Frequency Division Multiplexing... [03 Jul 2008]
