Previous
Wideband Voice Streaming Applet
Downloads VIMAS Technologies is now offering a voice streaming applet which streams wideband voice with audio bandwidth limited to 7500Hz with 16kbps bit rate only. The introduction of a wider audio bandwidth provides substantially improved sound quality...
[June 4, 2003, 20:16]
Wideband Code Division Multiple Access
White Papers To satisfy ever-increasing demands for higher data rates, as well as to allow more users to simultaneously access the network, interest has peaked in what has come to be known as wideband code division multiple access (WCDMA).
[October 11, 2005, 3:00]
Wideband Underwater Acoustic CDMA: Adaptive Multichannel Receiver Design
White Papers Two receivers that utilize multichannel (array) processing of asynchronous wideband direct-sequence CDMA signals are proposed: the Symbol Decision Feedback (SDF) receiver and the Chip Hypothesis Feedback (CHF) receiver.
[February 8, 2006, 0:01]
Wideband Spectrum Probe For Distributed Measurements In Cellular Band
White Papers This paper presents the architecture of a sensing probe for wideband measurement and distributed measurement method to measure, characterize and model the utilization of the spectrum. One of the foremost critical design problems in cognitive radios...
[December 7, 2006, 0:00]
Ultra-Wideband: A Wireless Renaissance In The Making
White Papers Ultra-wideband is a wireless technology that transmits an extremely low power signal over a wide swath of radio spectrum, achieving data rates as high as 114 Mbps today. Bluetooth, IEEE 802.11a/b/g, etc.ultra-wideband operates across a wide range...
[June 23, 2004, 20:00]
Optimal Power Control For CDMA Systems In The Wideband Limit
White Papers In order to find a tractable solution to these problems we develop a wideband limit approximation for dynamic programming problems in CDMA systems. The simplified evolution dynamics can then be used to construct a dynamic program that solves for...
[July 25, 2004, 3:16]
Emerging Wireless Technologies: Bluetooth & Ultra-Wideband
White Papers This paper will discuss the emerging wireless technologies such as Bluetooth and Ultra-wideband. The world today is advancing at a very high rate, and within this change is the world of wireless technology.
[August 9, 2005, 6:00]
An FDD Wideband CDMA MAC Protocol For Wireless Multimedia Networks
White Papers Frequency Division Duplex (FDD) mode wideband CDMA does not have the option of multislot operation because the resource units only include codes in a frame. In order to enhance the flexibility of resource allocation in FDD mode wideband CDMA...
[July 25, 2004, 3:16]
Consultation Paper On The Introduction Of Wireless Systems Using Ultra-Wideband Technology
White Papers The intent of this paper, announced in Gazette Notice SMSE-002-05, is to identify public interest and issues regarding the introduction and use of low-power systems using Ultra-Wideband (UWB) technology in Canada.
[February 17, 2006, 0:01]
Scale-Lag Diversity Reception In Mobile Wideband Channels
White Papers 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.
[August 10, 2007, 11:27]
Wideband MC-CDMA And Rake Receivers For UEP With Wavelet Video Transmission Over AWGN And Rayleigh Fading Channels
White Papers Wideband Multicarrier code division multiple access (MCCDMA) and Rake receivers for wavelet video transmission with four levels of unequal error protection (UEP) codes over additive white Gaussian noise (AWGN) and Rayleigh fading channels are...
[July 25, 2004, 3:16]
Robust Slope Region For Wideband CDMA With Multiple Antennas
White Papers This paper analyzes a low power, wideband CDMA system with multiple antennas. The joint "slope region" - of transmission rates at minimum energy per bit - is derived as a function of proportion between vanishing rates for multiple users.
[October 6, 2005, 3:00]
Joint Scale-Lag Diversity In Mobile Ultra-Wideband Systems
White Papers This paper considers the effect of mobility on an Ultra-WideBand (UWB) direct sequence spread spectrum communication system. Based on a uniform ring of scatterers model, the paper determines that the wideband scattering function has a "Bathtub...
[August 13, 2007, 8:09]
A Generalized Performance Study Of DS-CDMA Uplink/Downlink Receivers In Nakagami Wideband Fading Channel
White Papers The performance of two uplink/downlink receivers in Nakagami wideband fading channel is studied. This paper considers a mobile system consisting of a single isolated circular cell with K independent users simultaneously sharing the channel using...
[February 8, 2006, 0:01]
Ultra Wideband Signal Impact On IEEE 802.11b And Bluetooth Performances
White Papers This paper presents the results of a co-existence study investigating the impact of ultra wideband (UWB) interference on IEEE802.11b and Bluetooth networks. Results are based on the experimental test measurements made at the University of Oulu...
[November 22, 2005, 0:00]
Optimal Link Adaptation In Wideband CDMA Systems
White Papers In this paper a general framework is developed for optimizing link adaptation for multiuser CDMA systems in the wideband limit. The framework is then used to solve for the optimal power control policy that minimizes average transmit power while...
[June 16, 2006, 1:00]
Sega Boss Outlines "super Wideband" Dreamcast Network
News More so, Irimajiri said that, when complete, this "super wideband" network will afford delivery speeds so fast and latency so low that gamers can play action-intensive games like Soul Calibur and Sega GT with "no lag time.
[February 16, 2000, 10:41]
Analysis And Practical Comparison Of Wireless LAN And Ultra-Wideband Technologies For Advanced Localization
White Papers 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...
[November 10, 2006, 0:00]
Joint Scale-Lag Diversity In Mobile Wideband Systems
White Papers 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.
[August 10, 2007, 11:26]
RF Measurements For Ultra Wideband Communications ESeminar
White Papers UWB radio is getting a great deal of interest for wireless data transfer, because it offers an alternative way to use the scarce radio spectrum. Regulations around the world are at different stages, but allocations in the 3.1-10.6GHz range have...
[June 19, 2004, 20:00]
