bit error rate

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A Novel Coding Technique to Minimise the Transmission Bandwidth and Bit Error Rate in DPSK

This paper proposes a novel coding technique that aims to reduce the Transmission Bandwidth BT and Bit Error Rate BER vis-a-vis Conventional Differential Phase Shift Keying CDPSK in digital band pass transmission. In CDPSK two successive bits are used for encoding. The proposed method encodes information with respect to the...

Tags: Technique, Bandwidth, Bit Error Rate, Novel, Productivity

White papers 2008-05-01

Performance Evaluation of LogWestwood+ TCP in Wired/Wireless Networks

TCP is the most commonly used transport protocol on the Internet tuned to perform well in traditional networks made up of wired links with low bit error rates. Networks with higher bit error rates, such as those with wireless links, violate many of the assumptions made by TCP, causing degradation...

Tags: Bit Error Rate, Performance, Environment, Performance Evaluation, TCP, UNIVERSITY OF MONTENEGRO, Performance Management, Tcp/Ip, Team Management, Networking, Human Resources, Workforce Management, Management

White papers 2007-02-27

Modeling TCP Throughput Over Wired/Wireless Heterogeneous Networks for Receiver-Based ACK Splitting Mechanism

Recently, heterogeneous networks with wired and wireless links are becoming common. However, the performance of TCP data transmission deteriorates significantly over such networks because of packet losses caused by the high bit error rate of wireless links. The paper had proposed receiver-based ACK splitting mechanism to solve that problem previously....

Tags: Bit Error Rate, Wireless Link, Modeling, Wireless, Osaka University, Tcp/Ip, Networking

White papers 2006-04-22

Performance Analysis of Bluetooth Piconets Under Mutual Interference Using Bit Error Rate

In this paper, the performance of the Bluetooth piconets under the mutual interference is analyzed. As a performance measure, the packet error probability PEP is used. The PEP is obtained from the bit error rate BER and the collision length of packet. Not only the hit probability but also the...

Tags: Bit Error Rate, Performance, Interference, Analysis, Packet Error Probability, Simulation Result, Bluetooth, Performance Management, Wi-Fi, Wireless, Human Resources, Workforce Management

White papers 2005-09-20

M-QAM OFDM and PCC-OFDM Performance in the Presence of Phase Noise

This paper addresses the issue of OFDM and PCC-OFDM systems impaired by phase noise PN. PCC-OFDM is a variation of OFDM in which data is mapped onto adjacent subcarrier pairs. As a result intercarrier interference ICI in adjacent subcarriers is cancelled. Phase noise in OFDM causes both ICI and common...

Tags: Monash University, Bit Error Rate, PCC-OFDM Performance, OFDM, Wireless

White papers 2003-11-10

Receiver Algorithms for OFDM Systems in Phase Noise and AWGN

This paper addresses the subject of reducing the impact of phase noise on a QAM-OFDM system transmitting over an AWGN channel. Phase noise is known to have two effects on OFDM systems, rotating each symbol by a different Common Phase Rotation CPR and producing an InterCarrier Interference term ICI that...

Tags: Algorithm, Bit Error Rate, Noise, OFDM, Engineering, Wireless

White papers

Additional Resources

End-to-end encryption is the key to protecting data and reputations

In order to avoid the financial and brand damage associated with data breaches, businesses need to consider deploying end-to-end encryption as a tamper proof way of securing data. Commentary - Media outlets around the globe highlight new data breaches at an alarmingly regular rate. Forrester estimates that the cost...

Tags: PCI, Organization, Data Breach, PCI DSS, Encryption Key, encryption, security, Paul Meadowcroft Thales, Special to ZDNet, Paul Meadowcroft, Thales, Special to ZDNet

News items 2009-11-11

Xbox 360: Played x5 more than Wii, x5 more likely to fail that PS3

360 is sorta like owning an old sports carYou love the thing, but hate that it breaks down all the time. The reason people are so loyal to the 360 is that the software and game library are fantastic. The controllers work great and are durable without any gimmicks. When...

Tags: Game players, reason people, Sony PlayStation 3, console, Nintendo Wii, Microsoft Xbox, failure rate, Microsoft Xbox 360

Discussion threads 2009-08-18

Building walls between PR, journalists: A worst practice

Building walls between PR, journalists: A worst practicebad planI don't see how they could possibly scale this. HARO grew hand over fist in the first few months. If they grow, subscribers - both PR pros and reporters - will be impacted by the timeliness factor. Reporters should forget using this...

Tags: Construction, Haro, ProfNet, wall, public relations

Discussion threads 2009-06-17

Content and Resources Based Mobile and Wireless Video Transcoding

Delivering streaming video over wireless is an important component of many interactive multimedia applications running on personal wireless handset devices. Such personal devices have to be inexpensive, compact, and lightweight. But wireless channels have a high channel bit error rate and limited bandwidth. Delay variation of packets due to network...

Tags: Multimedia, Mobile, Network, Wireless Video, Video, Wireless, Corporate Communications, Wi-Fi, Wireless And Mobility, Marketing

White papers 2009-06-09

Microsoft makes Windows 7 RC available, but can't handle the rush

Microsoft makes Windows 7 RC available, but can't handle the rushJust launched my download from MSDNI'm getting in excess of 800KB/sec which probably means that I'm limited by my own bandwidth.Ultimate x64 will arrive in an hour, give or take.How longWill the RC be up for download? I certainly hope...

Tags: Operating systems, Microsoft Windows 7, Windows 7 RC, Microsoft Corp., Microsoft Windows

Discussion threads 2009-04-30

Mobile Handset Performance Evaluation Using Voice Quality Measurement

Evaluating a mobile handset's performance using voice quality measurement provides insightful understanding of overall handset performance and user-experience. When performed in a live network setting, voice quality measurement offers the advantage of exercising both the radio subsystem and baseband processing subsystem for a mobile handset. This contrasts with testing that...

Tags: Performance, Mobile, Radio, Handset, Metrico Wireless, Voice Quality Measurement, Mobile Handset, Performance Management, Advertising & Promotion, Cellular Phones, Human Resources, Workforce Management, Marketing, Consumer Electronics, Personal Technology

White papers 2009-04-30

Nanowires, nanoribbons and 'graphane' among materials that'll revolutionize computers

Architects of the next generation of computers are developing a variety of nanostructures to meet the demand for increasingly smaller features for semiconductors, microprocessors, and other components. These tiny building blocks are quite extraordinary-some even self-assemble. And they'll help overcome many of the limitations of today's microelectronics...

Tags: Nanotube, Carbon Nanotube, Computer, Chip, Nanotechnology, Semiconductors, Emerging Technologies, Hardware, Chris Jablonski

Blog posts 2009-04-24

BlackBerry App World launches: First impressions and a weird IE requirement

BlackBerry App World launches: First impressions and a weird IE requirementBlackberry App WorldI too was excited to add this option to my Blackberry Storm. However, trying both tether and direct to the phone encountered the same error message three times (didn't meet system requirements - even though the Storm...

Tags: Handhelds, Web browsers, RIM BlackBerry, BlackBerry App World, Blackberry App, weird IE requirement, IE Requirement, Microsoft Internet Explorer

Discussion threads 2009-04-01

First look: Windows 7 build 7068

First look: Windows 7 build 7068Fixed problemI was running build 7000 in my desktop and a big problem kept coming up. My system for some reason would continue freezing up . The only way to get my computer back running was to hold the power button and restart my computer....

Tags: Operating systems, Mapped Drives, Microsoft Windows 7, Windows 7 build 7068, Windows 7 Build, First Look, Microsoft Windows

Discussion threads 2009-03-31

Verification of Bit-Error Rate in Bang-Bang Clock and Data Recovery Circuits

High speed serial data links are expected to transmit data at very high rates with very high fidelity. Today speeds approaching 10 Gb/s are becoming common with 40 Gb/s on the horizon. Typically, a maximum Bit-Error Rate BER of 10 - 12-10 - 15 is required. Verifying such a small...

Tags: Data Recovery, Component, Designer, Storage Management, Databases, Storage, Hardware, Enterprise Software, Software, Data Management

White papers 2009-02-26

BenQ E2400HD

If you're looking for a low-priced 24-inch monitor, the BenQ E2400HD comes close to, but can't beat out, the Dell S2409W. For as little as $300, the BenQ E2400HD gives you VGA, DVI, and HDMI connections, great games and movies performance, and a redesigned footstand that virtually prevents any wobbling....

Tags: Monitors & displays, footstand, BenQ Corp., BenQ E2400HD, OSD, Dell S2409W

Product reviews 2009-02-11

Yahoo shareholder pushes for Microsoft search deal; Assumptions too optimistic

Updated: Ivory Investment Management, a hedge fund that owns about 1.5 percent of Yahoo, is pushing the company to do a search deal with Microsoft, but the sticking point is valuation. Analysts say that Ivory's assumptions sound optimistic. In a letter reported earlier by CNBC, Ivory urges...

Tags: Revenue, Shareholder, EBITDA, Search Business, Yahoo! Inc., Microsoft Corp., Ivory Investment Management, Corporate Governance, Financial Accounting, Search, Operational Accounting, Business Operations, Corporate Law, Finance, Larry Dignan

Blog posts 2008-12-10

CRM 2009 Forecast: How'd I Do in 2008? Gimme A High Four!

Usually, when I begin my forecast for the coming year, I like to look at how I did the previous year - which is usually disconcerting to say the least.  So, in honor of my first non-intro post for this ZDNET blog, I'm going to be nakedly transparent and show...

Tags: Social Media, Business, Tool, CRM, Zoho, Advertising & Promotion, Customer Relationship Management (CRM), Enterprise Software, Marketing, Software, Paul Greenberg

Blog posts 2008-11-18

Researchers find spam profits not so great, after all

To understand spammers, you have to spam. That's what University of California researchers at Berkeley and San Diego did earlier this year. And what they found is that is takes a hell of a lot of spam to make some dough, BBC reports. But with billions of spam messages going...

Tags: Researcher, Spammer, Cyberthreats, Spam, Phishing, Security, Spam And Phishing, Richard Koman

Blog posts 2008-11-10