narrowband

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Motorola Case Study: Glanbia Foods

Glanbia Foods has implemented Symbol Technologies' TaskMaster enhanced operations control product in its cheese distribution centre in Oswestry, Shropshire. Glanbia upgraded from their previous narrowband system to the latest WLAN technology, in order to take advantage of TaskMaster's ability to link to the company's enterprise -wide SAP system in real...

Tags: Symbol Technologies Inc., Narrowband, Timescale, Motorola Inc., Glanbia Foods

Case studies 2008-01-01

Coexistence Issues in Cognitive Radios Based on Ultra-Wide Bandwidth Systems

This paper discusses the basic concepts underlying Cognitive Radio CR and investigates the Ultra Wide Bandwidth UWB technology as one of the enabling transmission techniques for the implementation of CR systems. Firstly, the paper proposes an analytical methodology to assess the interference impact and coexistence issues between NarrowBand NB and...

Tags: Radio, IEEE, Narrowband

White papers 2006-05-23

Distributed Image-Sensor Web Management for Bandwidth Constrained Environments

Remote and in situ observation is an essential ingredient of understanding of the Earth and its processes. Observed data greatly improve the ability of Earth and Environmental scientists to model and predict various events and patterns which transpire in the environment and around the globe. Unmanned aircraft, with onboard instruments...

Tags: California State University, Earth, Bandwidth, Environment, Imaging, Narrowband, Document Management, Enterprise Software, Software, Finance, Managerial Accounting

White papers 2006-05-09

Ultra Wide Bandwidth Communications Towards Cognitive Radio

Cognitive Radio CR is an emerging approach for a more flexible usage of the precious radio spectrum resources. This paper introduces the basic concepts underlying Cognitive Radio. After the definition of a possible scenario, the paper discusses Ultra Wide Bandwidth UWB technology as one of the transmission techniques suitable for...

Tags: Radio, Narrowband, Cognitive Radio, Advertising & Promotion, Marketing

White papers 2005-09-22

BAndwidth Expansion of Narrowband Speech Using Non-Negative Matrix Factorization

This paper presents a novel technique for the estimation of the high frequency components (4-8kHz) of speech signals from narrow-band (0-4 kHz) signals using convolutive Non-Negative Matrix Factorisation NMF. The proposed technique utilizes a brief recording of simultaneous broad band and narrow band signals from a target speaker to learn...

Tags: Technique, Speaker, Broadband, Narrowband, Productivity, Broadband Internet, Network Technology, Telecommunications, Networking

White papers 2005-09-01

Robust Bandwidth Extension of Noise-Corrupted Narrowband Speech

This paper presents a new bandwidth extension algorithm for converting narrowband telephone speech into wideband speech using a transformation in the mel cepstral domain. Unlike previous approaches, the proposed method is designed specifically for bandwidth extension of narrowband speech that has been corrupted by environmental noise. The paper shows that...

Tags: Narrowband, Narrowband Speech

White papers 2005-08-02

Trunked IP25 Infrastructure Systems

First responders need a secure, reliable, and flexible Project 25 trunked communication system. EFJohnson's Trunked IP25 Infrastructure System is a Project 25 compliant trunked system that is designed specifically for public safety and homeland security, and utilizes Voice over Internet Protocol VoIP for system integration. Trunked IP25 provides a trunked...

Tags: Narrowband, EFJohnson, Homeland Security, Government

White papers 2005-05-01

Interpolation-Based QR Decomposition in MIMO-OFDM Systems

The extension of multiple-input multiple-output MIMO sphere decoding from the narrowband case to wideband systems based on orthogonal frequency division multiplexing OFDM requires the computation of a QR decomposition for each of the data-carrying OFDM tones. Since the number of data-carrying tones ranges from 48 (as in the IEEE 802.11a/g...

Tags: ETH Zurich, Decomposition, Narrowband, MIMO-OFDM, OFDM, Wireless

White papers 2005-04-30

MIMO-OFDM

The growing demand of multimedia services and the growth of Internet related contents lead to increasing interest to high speed communications. The requirement for wide bandwidth and flexibility imposes the use of efficient transmission methods that would fit to the characteristics of wideband channels especially in wireless environment where the...

Tags: Helsinki University, Narrowband, MIMO-OFDM, OFDM, Wireless

White papers 2005-02-03

49% of American homes have broadband

Broadband Internet access is coming up to 50% of all home Internet users, Nielsen//NetRatings reports. Its May analysis of Internet connections shows that 49% of all home users - 62.9 million households - are connecting via broadband. Four years ago, broadband users were 9% of the market with 7.2 million...

Tags: broadband, broadband user

Blog posts 2004-07-12

Enhanced Tracking for Fresh Produce Terminals

The Fresh Produce Terminal FPT operates three fruit exporting terminals around South Africa - in Cape Town, Port Elizabeth and Durban - and one in Maputo, Mozambique. With an ageing wireless infrastructure based on narrowband radio protocols which was unable to guarantee complete coverage of the site and handheld computing...

Tags: Symbol Technologies Inc., Narrowband, Handheld Computing, Fresh Produce Terminal, Sales Tools, Handhelds, Sales, Hardware

Case studies

Additional Resources

Microsoft's search ambitions are its Vietnam

Is Microsoft fighting an unwinnable war with its online business and search obsession? It's a valid question and one that needs to be asked. At some point you have to wonder if Microsoft's Google envy is its Vietnam. As Mary Jo Foley noted Microsoft's answer to its...

Tags: Business, Microsoft Corp., Investment, Finance, Larry Dignan

Blog posts 2008-07-18

HD-Telephony: Hip or Hype?

HD-Telephony: Hip or Hype?Wideband ConferencingTony has done a great job summarizing key aspects of wideband technology.My company ZipDX (zipdx.com) has been delivering a wideband-capable audioconferencing service since last year. The number of wideband endpoints is relatively small, but it is growing quickly. Polycom just announced a couple of new speakerphones...

Tags: endpoint, HD-Telephony, Hip, Tony

Discussion threads 2008-04-15

PayPal: If a browser doesn't have anti-phishing technology (like Safari) ditch it

PayPal: If a browser doesn't have anti-phishing technology like Safari ditch itFor me, they are just a nuisance.I mean, I check every link, and if the host doesnt end in "zdnet.com", I don't click it.Incidently, since the weekend, I been doing a lot more link checking. Maybe I need to...

Tags: Cyberthreats, Spam, Web browsers, Viruses and worms, SECURITY, PayPal, phishing, anti-phishing technology, Web browser, Apple Safari

Discussion threads 2008-03-04

Sound Grinder (zip)

Sound Grinder is a highly efficient batch conversion audio utility for professionals and hobbyists alike. It features support for many of the most popular audio formats including: AIFF, AMR Narrowband, AU, FLAC, MP3, OGG Vorbis, Quicktime Movie, Sound Designer II, and BWAV. Sound Grinder also incorporates Rapid Convert and Droplets,...

Tags: Monkey Tools, Digital Rights Management (DRM), Apple Mac OS X, Apple Mac OS, Digital Music, Digital Media, Operating Systems, Security, Software, Personal Technology, Consumer Electronics

Software downloads 2008-02-22

Microsoft Unified Communications shuns G.722 wideband interoperability

Microsoft launched its UC Unified Communications products this month with the intention of replacing the traditional PBX.  But before it can get to a dominant market share position if it ever gets there at all, it's going to have to interoperate with existing telephony systems on the existing standards that...

Tags: Interoperability, Phone, IP Phone, Codec, IP, Microsoft Corp., Polycom Inc., G.722, RTAudio, G.722.1, Telecom & Utilities, George Ou

Blog posts 2007-10-31

EarthLink restructures, cuts 900 jobs

Amid declining subscribers for its Internet services EarthLink unveiled a restructuring that will shutter a handful of locations and eliminate 900 jobs. The restructuring, outlined in a statement on Tuesday, comes as the company is repositioning for the future. Rolla P. Huff, EarthLink President and CEO, said: "These changes get...

Tags: Job, EarthLink Inc., Larry Dignan

Blog posts 2007-08-28

With Clearwire pact, satellite tv FINALLY sheds broadband commitmentphobia

With Clearwire pact, satellite tv FINALLY sheds broadband commitmentphobiaCleatwire is a dogHad Clearwire for a year, was the worse internet experience ever. System would gobble up email traffic and Customer support was ground level garbage. DIRECTV and Dish may be sorry but then they probably won't have to deal with...

Tags: Network technology, Broadband Internet, TVs, satellite television, Clearwire Corp., broadband, Wild Blue, WiMAX, satellite

Discussion threads 2007-06-15

Cisco's 1080p 'TelePresence' solution at Interop

Talking up Interop 2007, Cisco's Chairman and CEO John Chambers showed the power and flexibility of the phrase "Web 2.0" by proclaiming it to be collaboration and video conferencing. Standing behind Chambers was the Cisco TelePresence system that delivers 1080p (1920x1080) video conferencing to anyone who can afford the...

Tags: Hardware, Infrastructure, Networking

Blog posts 2007-05-23

Joint Scale-Lag Diversity in Mobile Wideband Systems

This paper considers the effect of mobility on a wideband Direct Sequence Spread Spectrum DSSS communication system, and study a scale-lag Rake receiver capable of leveraging the diversity that results from mobility. A wideband signal has a large bandwidth-to-center frequency ratio, such that the typical narrowband Doppler spread assumptions do...

Tags: Mobile, Ohio State University, Mobility, Advertising & Promotion, Marketing

White papers 2007-03-20