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DEFINITION: Staggered quadrature phase-shift keying (SQPSK), also known as offset quadrature phase-shift keying (OQPSK), is a method of phase-shift keying (PSK) in which the signal carrier-wave phase transition is always 90 degrees or 1/4 cycle at a time. A phase shift of 90 degrees is known as phase quadrature.In SQPSK, the data is placed alternately on two channels or streams called the I channel (for "in  … 
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Data Transmission Standards White Papers (View All Report Types)
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The Current Chaotic State of Data Traffic Security
sponsored by Certes Networks
WHITE PAPER: This white paper explores the results of a survey of more than 6 million IT professionals that aimed to discover how companies across the globe handle data in motion and other IT security issues. The results made one thing apparent: Data traffic encryption is a mess.
Posted: 06 Jan 2015 | Published: 16 Dec 2014

Certes Networks

Accelerated Transactions, Increased Security a Bullseye for Dart Transit Company, Trading Partners
sponsored by EXTOL International, Inc.
WHITE PAPER: Read this brief white paper to learn how Dart Transit Company implemented an electronic data interchange strategy (EDI) that offers faster, more secure data transactions for their trading partner interactions, and more effective automation tools to manage the business integration process.
Posted: 01 Aug 2011 | Published: 01 Aug 2011

EXTOL International, Inc.

Successful Mobile Deployments Require Robust Security
sponsored by BlackBerry
WHITE PAPER: Now that mobility has become an integral part of an enterprise's infrastructure, IT must now support and secure these mobile devices. Read this whitepaper to find out the unique security requirements that these mobile devices create and the three components of mobile security protection.
Posted: 15 Oct 2010 | Published: 20 May 2009

BlackBerry

Best Practices Guide: Cabling the Data Center
sponsored by Brocade
WHITE PAPER: This guide describes best practices for incorporating cabling in a typical data center, plus tips for selecting cabling components and information on data transmission media.
Posted: 01 Sep 2009 | Published: 01 Sep 2007

Brocade

How to Effectively Protect Data in Transit and Assure Governance with NHS Directive
sponsored by Lumension
WHITE PAPER: This document examines how Lumension solutions assure NHS Trusts of governance with all of the stated requirements for securing data in transit and maps the solution's capabilities to these specific requirements.
Posted: 13 Aug 2009 | Published: 13 Feb 2008

Lumension

Successful Mobile Deployments Require Robust Security
sponsored by Lopez Research
WHITE PAPER: Now that mobility has become an integral part of an enterprise's infrastructure, IT must now support and secure these mobile devices. Read this whitepaper to find out the unique security requirements that these mobile devices create and the three components of mobile security protection.
Posted: 20 May 2009 | Published: 20 May 2009

Lopez Research

The OSI Model: Understanding the Seven Layers of Computer Networks
sponsored by Global Knowledge
WHITE PAPER: This paper explains each of the seven layers of OSI model, including their functions and their relationships, also it provide with an overview of the network process, which can act as a framework for understanding the details of computer networking.
Posted: 10 Dec 2008 | Published: 01 Jul 2006

Global Knowledge

How to Slash Corporate Fax Telephone Charges 20 - 80%: Overview of V.34 Faxing and JBIG Document Compression
sponsored by FaxBack, Inc.
WHITE PAPER: An in-depth look at V.34 high-speed fax and JBIG document compression technology...designed to save companies significant money in reducing fax telephone charges.
Posted: 18 Sep 2003 | Published: 01 May 2004

FaxBack, Inc.
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DATA TRANSMISSION STANDARDS DEFINITION (continued): …  phase") and the Q channel ("phase quadrature"). A single phase transition can never exceed 90 degrees. This property contrasts SQPSK with conventional quadrature phase-shift keying (QPSK), in which the phase can sometimes change by 180 degrees (two 90-degree shifts in a single transition). The average magnitude of the phase transitions is smaller with SQPSK than with conventional QPSK. The result of the smaller average phase "jump" is an improved signal-to-noise ratio (SNR) and a reduced error rate.SQPSK and QPSK are not the only methods of PSK in common use. In binary … 
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