IPWireless Case Study: AIRDATA
White Papers Using UMTS TDD, AIRDATA's wireless network enables PortableDSL, a service that allows users with a simple plug-and-play PCMCIA card or desktop modem to enjoy all the broadband benefits of DSL, but with the added convenience of go-anywhere...
[July 14, 2008, 1:20]
Interference Considerations For The Time Division Duplex Mode Of The UMTS Terrestrial Radio Access
White Papers The air interface of the Universal Mobile Telecommunication System (UMTS) Terrestrial Radio Access (UTRA) covers both a Frequency Division Duplex (FDD) part for the paired bands and a Time Division Duplex (TDD) part for the unpaired bands of the...
[January 20, 2006, 0:01]
Global 3G Data Roaming Comes Closer
News From now on, all IP Wireless' modems will operate at both 1900MHz and 2010MHz, which the company says will allow someone who subscribes to a UMTS TDD-based wireless broadband service in London to fly to Japan, for example, and still get...
[May 12, 2004, 18:15]
Rupert Goodwins' Diary
Blog UMTS-TDD, that's what, which is a 3G standard for pretty dull broadband wireless data networks. There are no UMTS-TDD handsets, there are only big fat old modems. So I fire a note off to the woman who is "PR Counsel for IPWireless" - the company...
[October 24, 2005, 13:05]
Drowning In Wireless Spaghetti
News There are signs that UMTS-TDD is trying to acquire that name, but as the standard is part of the 3G specification suite this is pure marketing spin. UMTS — Another name for 3GSM (apart from UMTS TDD, which isn't).
[November 1, 2005, 12:00]
Universal Broadband Access: Going Wireless And Mobile
White Papers GSM/EDGE, UMTS/HSDPA/HSUPA, WiMAX, CDMA2000, UMTS-TDD-HCR, TD-SCDMA, WiFi, mobile broadcast! What is the best technology to select? Are there any bad technologies that we can forget? How can an operator ultimately satisfy the unmet demands of its...
[October 11, 2005, 3:00]
Orange Trials 3G Rival To WiMax
News The mobile firm announced this week that it is trialling IPWireless' UMTS TDD service in France. TDD runs within the 3G, or UMTS, specification. The UMTS TDD alliance claims that UMTS TDD could support download speeds of up to 12Mbps.
[March 31, 2005, 16:50]
Europe Telecom Services - WiMAX & Family: Threats And Opportunities
White Papers After a number of false dawns of alternative wireless broad band technologies outside the main stream focus of UMTS / W-CDMA / 3G, there has been growing debate in the telecom industry of whether a new generation of wireless technologies like...
[November 25, 2004, 2:00]
WiMAX & Family: Threats And Opportunities
White Papers After a number of false dawns of alternative wireless broad band technologies outside the main stream focus of UMTS / W-CDMA / 3G, there has been growing debate in the telecom industry of whether a new generation of wireless technologies like...
[January 20, 2005, 2:00]
The Road To 3G
White Papers Less widely deployed technologies such as cdma2000 1xEV-DV, DECT+, UMTS TDD, and TD-SCDMA are mentioned briefly with limited discussion due to their expected limited use. Technologies including PDC, cdmaOne (IS-95), TDMA (IS-54, IS-136), GSM, GPRS...
[March 23, 2005, 2:00]
Time Division Multiple Access (TDMA)
White Papers This combination became part of UMTS (universal mobile telecommunication system), known as UTRA TDD (UMTS terrestrial radio access time domain duplex) or TD/CDMA. In this paper, a concise overview of TDMA (time division multiple access) and its...
[July 20, 2004, 3:00]
Mobile Operators Defensive Over 3G Auctions
News We have assumed that deployments in the 2500-2690 MHz band [the largest band on offer] will be UMTS FDD, UMTS TDD [both expected evolutions of 3G] or mobile WiMax," said Ofcom. Mobile operators have reacted defensively to the prospect of spectrum...
[December 14, 2006, 12:40]
Vodafone Looks To Wireless Broadband
News With T-Mobile already having rolled out UMTS-TDD and Flash-OFDM in Slovakia, Sarin said Vodafone is looking at the technology but will not necessarily choose to adopt it. Roughly a year after its 3G launch, Vodafone is turning its attention to the...
[November 16, 2005, 8:55]
Could XMax Change The World Of Broadband?
News It does this by using parts of the spectrum with much better long-range and in-building characteristics than the multi-gigahertz bands used by WiMax, 3G and UMTS-TDD — alternative spectrum below 1GHz that, while very desirable, is occupied by...
[November 4, 2005, 11:30]
Super-3G Breaks Records - And The Bank
Leader You can be sure that the coming wireless networks built around UMTS-TDD or the family WiMax will be flat-rate, and the comparison will not be flattering. The Isle of Man is a great place for radio. Isolated by water and puffins, it's a nicely...
[October 21, 2005, 14:25]
Siemens And NEC Partner On Mobile Tech
News It will combine research and development relating to the two major UMTS technologies -- Frequency Division Duplex (FDD), NEC's area of expertise, and Time Division Duplex (TDD), Siemens' speciality. Siemens and NEC have formed a joint venture to...
[November 16, 1999, 12:29]
Closed Loop Transmit Diversity Enhancements For UMTS Narrow Band And Wide Band TD-CDMA
White Papers The aim of the work presented in this paper is to evaluate the performance gains obtained by using multiple transmit antennas at the Node B in the context of the low chip rate TDD option (1.28 Mcps TDD option) being specified in 3GPP RAN WG1.
[July 19, 2005, 6:00]
