synchronous
RSS synchronousSynchronous Data Link Control and Derivatives
White Paper IBM developed the Synchronous Data Link Control (SDLC) protocol in the mid-1970s for use in Systems Network Architecture (SNA) environments. SDLC was the first of an important new breed of link-layer protocols based on synchronous, bit-oriented... [23 Jul 2007]
NTS Testing Labs: SONET (Synchronous Optical Network) GR-253/GR-1377 Test Lab Compatibility & Functionality Test Outline
White Paper Test procedures are designed to verify compliance and conformance of a client’s product (Equipment Under Test) with Synchronous Optical Network (SONET) specifications and requirements, generally outlined herein and defined in Bellcore General... [02 Apr 2004]
Synchronous Services
White Paper A synchronous service is specified using the same tools we use to specify an action: either by means of a DFD (known as a synchronous service DFD, or SDFD) or in some action specification language. [24 Feb 2004]
WCDMA Network Deployments: Asynchronous vs. Synchronous
White Paper The standard also allows base stations to be synchronized and, in fact, provides explicit signaling support that allows the benefits of synchronous operation to be realized. A basic design decision facing an operator of a WCDMA network is the... [12 Jul 2007]
Synchronous Optical Network (SONET) Transmission
White Paper Synchronous optical network (SONET) offers cost-effective transport both in the access area and core of the network. The optical layer is now evolving to provide the same level of sophistication that has been achieved with synchronous transmission... [24 Feb 2004]
Synchronous Digital Hierarchy (SDH)
White Paper This tutorial discusses synchronous transmission standards in world public telecommunications networks. It will cover their origins, features, applications, and advantages, as well as their impact on network design and synchronous signal structure. [24 Feb 2004]
Cisco - Synchronous Digital Hierarchy (SDH) Graphical Overview
White Paper This paper provides an overview of Synchronous Digital Hierarchy (SDH) represented in images. The information presented in this paper was created from devices in a specific lab environment. All of the devices used in this paper started with a... [31 Oct 2004]
ActivCard Synchronous Authentication
White Paper It includes technical definitions of the DES algorithm and the following security terms and technologies: (1) ActivCard asynchronous (challenge/response) authentication; (2) ActivCard’s patented synchronous authentication (using three variables of... [24 Feb 2004]
Structured Virtual Synchrony: Exploring the Bounds of Virtual Synchronous Group Communication
White Paper Multipoint communication protocols that offer group membership and virtually synchronous message delivery are commonly believed to be heavyweight and non-scalable. To meet the needs of large-scale computer-supported collaborative work, distributed... [29 Nov 2006]
Developing Synchronous Groupware for Learning Environments
White Paper Synchronous groupware brings together users, which are geographically distributed, but connected via a network. Usually, groupware is not developed from-the-scratch, as the development is difficult, time-consuming, and error-prone. [07 Dec 2005]
Fast Graph Generation for Synchronous Processes
White Paper We present some techniques that greatly reduce the cost of generating graphs from synchronous presentations of concurrent systems. The automated analysis of concurrent systems requires that they are translated from a syntactic presentation into... [24 Feb 2004]
State Treemap: An Awareness Widget for Multi-Synchronous Groupware
White Paper Awareness widgets facilitate coordination for both synchronous and asynchronous groupware systems. Unfortunately, they cannot be used for multi-synchronous groupware systems. With a group of architects, a new awareness widget is designed for multi... [12 Dec 2005]
ARC: A Synchronous Stream Cipher From Hash Functions
White Paper In this paper, a simple and secure way to realize a synchronous stream cipher from iterated hash functions is considered. It is similar to the OFB mode where the underlying block cipher algorithm is replaced with the keyed hash function, adopting... [24 Jan 2006]
Blind Detection of Synchronous CDMA in Non-Gaussian Channels
White Paper This paper considers the problem of non-cooperative blind detection of synchronous direct-sequence code-division multiple-access communications (no knowledge of the spreading sequences or training data) in non-Gaussian channels. [26 Jul 2005]
A Blind Synchronous Multi-User DS-CDMA Equaliser With Partial Loading
White Paper The active synchronous users are separated by re-establishing orthogonality of their spreading sequences in a common chip-level equaliser. This paper proposes a blind multiuser detection scheme in a direct sequence CDMA downlink scenario by means... [21 Feb 2006]
