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ZDNet Dictionary Definition
- UWB
- (Ultra-WideBand) A wireless technology that uses less power and provides higher speed than 802.11 Wi-Fi networks or first-generation Bluetooth products. UWB is expected to provide wireless video transmission...
- Full UWB Definition >>
ZDNet Resources
- Convergence Analysis of Iteratively Detected Time Hopping and DS-CDMA Ultrawide Bandwidth Systems by EXIT Charts
- This paper presents a novel analysis on the decoding convergence of Time Hopping TH and Direct Sequence DS Code-Division Multiple-Access CDMA Ultrawide Bandwidth UWB systems when communicating over multipath Nakagami channels. The analysis is based on the Extrinsic Information Transfer EXIT chart where the UWB systems are serially concatenated pulse-position...
- Tags: UWB, Analysis, Convergence, Ultrawideband (UWB), Wireless
- White papers 2008-04-15
- 400 mln ultrawideband devices to ship by 2013
- ABI Research says shipments of UWB-enabled devices will grow from virtually nil today, to more than 400 mln in 2013. by AM
- Tags: UWB, Ultrawideband (UWB), Wireless, AM
- Blog posts 2008-03-26
- Ultra High-Speed and Ultra Low-Noise InP HEMTs
- InP-based High Electron Mobility Transistors InP HEMTs exhibit a record current-gain cutoff frequency of beyond 500 GHz and an ultra low noise figure of less than 2 dB even at 100 GHz. Consequently, they are regarded as key devices for next-generation wired/wireless communication systems and precision sensors. This paper describes...
- Tags: UWB, Sensor, Fujitsu Ltd., Ultrawideband (UWB), Wireless
- White papers 2007-10-01
- On the Relation Between Bandwidth and Robustness of UWB Channel in Complex Confined Areas
- Ultra-Wideband UWB communication has been the subject of extensive research in recent years due to its unique capabilities and potential applications, particularly in short-range multiple access wireless communications. However, many important aspects of UWB-based communication systems have not yet been thoroughly investigated. The propagation of UWB signals is the single...
- Tags: UWB, Bandwidth, Universite Laval, Ultrawideband (UWB), Wireless
- White papers 2007-07-28
- Ultrawideband Wireless Solutions
- The presentation provides an overview of Ultrawidband usage model and technologies and provides technical solutions to coexistence with WiMAX and WiFi on mobile platforms. It also provides an update on Intel Ultrawideband technology roadmap.
- Tags: UWB, Mobile, Intel Corp., Presentation, Ultrawideband (UWB), WiMAX, Wireless
- Presentations 2006-09-27
- High-Resolution Ultrawideband SAR Based on OFDM Architecture
- This white paper addresses the proposal of research aimed at the development of detailed model-based description of high-resolution potentially jamming-resistant portable Synthetic Aperture Radar SAR system with rapid radar image transmission capabilities for complete battle-scene reconstruction. High resolution of obtained imagery and resistivity to certain types of jamming will be...
- Tags: UWB, High-resolution, Transceiver, OFDM, Ultrawideband (UWB), Wireless
- White papers 2006-08-22
- Concatenated RS-Convolutional Codes for Ultrawideband Multiband-OFDM
- This paper investigates the performance of concatenated Reed Solomon and convolutional RSconvolutional codes for UltraWideBand UWB MultiBand Orthogonal Frequency Division Multiplexing (MB-OFDM) systems. This paper show that RS-convolutional codes perform better than single codes at high energy-per-bit to noise ratio (Eb/No). The paper also show that using a bit interleaver...
- Tags: UWB, University Of Oxford, Ultrawideband (UWB), Wireless
- White papers 2006-07-09
- Performance Analysis and Range Improvement in Multiband-OFDM UWB Communications
- The performance of multiband-OFDM UWB systems is analyzed using the S-V indoor channel model. Based on the analysis, two methods are proposed to improve the reliable transmission range of UWB devices by exploiting the rich spectral and spatial diversity available in the system. It is shown both by theory and...
- Tags: UWB, Performance, IEEE, Ultrawideband (UWB), Performance Management, Productivity, Wireless, Human Resources, Workforce Management
- White papers 2006-06-09
- Faster networks, please
- Faster networks, pleaseYou got some other problems Ed.UWB is great for in-room stuff, but no way can it be as good as a wire. You have some other problems Ed. Even HDV streams the kind coming from a camcorder only use 28 mbps. A stabil 100 mbps...
- Tags: Routers & switches, Network technology, NETWORKING, UWB, D-Link Systems, router, network, gigabit switch, gigabit network
- Discussion threads 2006-05-30
- Faster networks, please
- You can’t be too rich or too thin, or have a network that’s too fast. I struggled over the weekend trying to tweak the performance of an Xbox 360 connected to a PC running the new Media Center software in Windows Vista. (I’ll have a closer look at Vista Media...
- Tags: Media Center PC, network, UWB
- Blog posts 2006-05-30
- Analysis and Practical Comparison of Wireless LAN and Ultra-Wideband Technologies for Advanced Localization
- In this paper the authors compare the capabilities of Wireless LAN and Ultra-Wideband to enable advanced localization systems. The two technologies are compared regarding their suitability towards time-delay-estimation by theoretical bounds as well as by means of practical time-of-flight range estimation in Line-Of-Sight LOS and Non-Line-Of-Sight NLOS conditions in an...
- Tags: UWB, WLAN, Analysis, Ultrawideband (UWB), LANs, Wireless LANs, Wi-Fi, Wireless, Networking
- White papers 2006-05-08
- Bluetooth Picks WiMedia UWB for High Speed
- The Bluetooth Special Interest Group SIG announced that the flavor of ultrawideband wireless called MultiBand Orthogonal Frequency Division Multiplexing (MB-OFDM), backed by the WiMedia Alliance industry group, will be integrated into Bluetooth. The Bluetooth SIG Core Specification Working Group Charter and UWB Feature Requirements Document FRD will commence immediately, but...
- Tags: UWB, Jupitermedia Corp., Ultrawideband (UWB), Bluetooth, Wi-Fi, Wireless
- White papers 2006-03-29
- Ultra Wideband standards issues resolved: devices expected by 2008
- After years of fits and starts, most of the leading consumer electronics manufacturers have announced they will use a faster version of Bluetooth wireless technology to move video between devices in the homeThe technology will also govern how televisions, PCs and video recorders will be connected. Up until now,...
- Tags: WiMedia Alliance, UWB
- Blog posts 2006-03-28
- Precise Timing for Multiband OFDM in a UWB System
- Precise positioning is one attractive application of Ultra WideBand UWB systems. Its enormous bandwidth has generated high expectation on the spatial resolution that it could achieve. However, synchronization in the presence of dense multipath is challenging, since the first arrival is not necessarily the strongest one due to channel fading....
- Tags: UWB, Positioning, Ultrawideband (UWB), OFDM, Wireless
- White papers 2006-03-24
- Prepare to bifurcate. IEEE scuttles UWB standards effort
- Prepare to bifurcate. IEEE scuttles UWB standards effortToo bad...So now the consumer will have multiple, non-compatible choices. And if a company making one of the choices goes out of business - too bad - the investment is lost. Lack of interoperability will ensure that costs stay high - they'll...
- Tags: Ultrawideband (UWB), UWB, standards effort, IEEE
- Discussion threads 2006-01-20
- Prepare to bifurcate. IEEE scuttles UWB standards effort
- Electronic News:The two UWB camps, direct sequence-UWB backer UWB Forum and MultiBand Orthogonal Frequency Division Multiplexing UWB supporter WiMedia Alliance, said in a joint statement today that they will continue to move UWB into the market and concur that, at this stage in UWB market development, “a more prudent course...
- Tags: UWB
- Blog posts 2006-01-19
- Multiband-OFDM MIMO Coding Framework for UWB Communication Systems
- The emerging UltraWideBand UWB system offers a great potential for the design of high speed short-range wireless communications. In order to satisfy the growing demand for higher data rates, one possible solution is to exploit both spatial and multipath diversities via the use of Multiple-Input Multiple-Output MIMO and proper coding...
- Tags: UWB, Ultrawideband (UWB), Wireless
- White papers 2006-01-01
- Use of Cognitive Radio Techniques for OFDM Ultrawideband Coexistence With WiMax
- This paper explores the issues in coexistence between Broadband Fixed Wireless Access, also know as WiMax or 802.16e, and Ultrawideband UWB, specifically the multiband OFDM form of UWB as promoted by the WiMedia trade group. A multiband OFDM receiver can operate as a channelized radiometer to detect emissions from WiMax...
- Tags: UWB, Radio, Ultrawideband (UWB), WiMAX, OFDM, Wi-Fi, Wireless
- White papers 2005-10-14
- On the Design of Robust Multiband OFDM Ultra-Wideband Receivers
- This paper analyzes the effects of NarrowBand Interferences NBI on the performance of a Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra-WideBand UWB receiver and proposes efficient schemes for signal reception and extraction of information in the presence of NBI. A study to assess the effects of NBI on the quantization...
- Tags: UWB, Texas A&M University, NBI, Ultrawideband (UWB), Wireless
- White papers 2005-10-14
- System Design Considerations for Ultra-Wideband Communication
- This paper discusses issues associated with high-data-rate pulsed ultra-wideband system design, including the baseband processing, transmitter, antenna, receiver, and analog-to-digital conversion. A modular platform is presented that can be used for developing system specifications and prototyping designs. This prototype modulates data with binary phase shift keyed pulses, communicates over a...
- Tags: UWB, Platform, Ultrawideband (UWB), Wireless
- White papers 2005-08-01
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