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What does W-CDMA stand for?
W-CDMA stands for wideband-code division multiple access. It is a 3G technology that increases data transmission rates in GSM systems by using the CDMA air interface instead of TDMA.
total search1396 articles
2007-11-01 ZTE claims 'first' W-CDMA commercial femtocell
ZTE claims its ZXWR H8901 product is the world's first W-CDMA commercial Home NodeB, also known as femtocell.
2003-06-03 WFI appoints Western Wireless for CDMA, GSM overlay
Wireless Facilities Inc. has been tapped by Western Wireless Corp. to be the latter's services vendor for the company's on-going CDMA and GSM/GPRS overlay.
2007-02-14 W-CDMA protocol analyzer tests partial designs
Unlike using radio test sets on conformance test systems, the Aeroflex W-CDMA ACE 3G protocol analysis test system supports the early development of protocol test scenarios through its ability to test partial and incomplete designs.
2007-02-21 W-CDMA PA promises 25% more talk time
Leveraging Anadigics' HELP3 technology, the AWT6221 W-CDMA power amplifier reduces average current consumption by 75 percent, which translates to up to 25 percent increase in talk-time.
2005-02-28 W-CDMA PA modules reduce power consumption by 50 percent
Anadigics unveiled a new family of 4-by-4mm HELP W-CDMA PA modules that use the company's proprietary mode switching techniques.
2007-05-14 W-CDMA handsets to drive DSP growth till 2011
Forward Concepts predict that a pickup in the W-CDMA/UMTS handset shipments will drive a 12 percent CAGR in DSP chips till 2011.
2005-05-12 W-CDMA gets a boost from dual-band power amplifier module
Fairchild's new W-CDMA power amplifiers is one of the first dual-band W-CDMA PAs that offers a 3-by-3mm footprint
2005-03-25 W-CDMA chipset to support HSDPA
Qualcomm is developing the Mobile Station Modem MSM6260 chipset and system software solution for W-CDMA/High Speed Downlink Packet Access and GSM/GPRS/EDGE (EGPRS).
2009-12-29 W-CDMA base stations pack RRE
NTT Docomo Inc. is deploying new W-CDMA base stations equipped with newly-developed remote radio equipment (RRE) units to provide both existing W-CDMA and forthcoming LTE service.
2007-04-23 W-CDMA 2.3GHz VCO using BFR360F and BBY58-02V
The BFR360F is a 14GHz transition-frequency device which takes advantage of the latest manufacturing techniques requiring fewer processing steps than other devices in its class.
2004-04-28 UTStarcom expands CDMA group with Telos buy
UTStarcom Inc. will buy nearly all the assets of Telos Technology Inc., the Vancouver-based developer of mobile switches targeted at rural, enterprise, and emerging wireless markets.
2004-06-17 UTStarcom buys Audiovox CDMA handset division
Chinese equipment manufacturer UTStarcom has acquired Audiovox's CDMA handset division in a deal valued at $165.1 million in cash.
2004-05-27 Using the PE3293 fractional-N PLL in single-band 1800 and dual-band CDMA solutions
This app note presents the PE3293 fractional-N PLL in single-band 1800 and dual-band CDMA solutions.
2004-05-27 Using the PE3291 in CDMA applications
This app note presents the PE3291 fractional-N PLL in CDMA cellular wireless applications.
2004-03-16 Updated process slashes size of CDMA RF filters
Agilent has reworked its proprietary film bulk-acoustic-resonator process technology to reduce the size of RF duplexer and filter devices for CDMA PCS phones.
2004-11-22 UbiNetics, Renesas to develop W-CDMA, HSPDA subsystem
UbiNetics and Renesas Technology Corp. have agreed to develop an RF subsystem for emerging wideband CDMA (W-CDMA) and high-speed data packet access (HSDPA) designs for the Japanese, European, and US markets.
2006-02-01 TriQuint unveils 'smallest' high power CDMA antenna switch
TriQuint Semiconductor Inc. has introduced the TQP4M3019, a high power antenna switch for CDMA applications.
2000-06-14 Transmit and Receive AGC Amplifiers for CDMA Cellular/PCS Phones
This technical note examines RF Micro Devices' RF2607 CDMA/FM receive AGC amplifier and the RF2609 CDMA/FM transmit AGC amplifier, which both provide linear amplification and attenuation to the RF section of a CDMA phone.
2007-10-11 Tiny W-CDMA duplexer extends handset talk time
Optimized for the UMTS Band 1 frequency band, Avago's FBAR-based W-CDMA duplexer improves talk time and handset sensitivity in a miniature 3mm x 2.5mm x 1.2mm package.
2007-11-29 Tiny duplexer handles W-CDMA Bands V/VI
EPCOS AG is shipping in production quantities a UMTS duplexer for the W-CDMA bands V/VI, which features a footprint of 2.5mm x 2mm and a flat insertion height of 0.5mm.
2003-12-09 TI, STMicro offer modular CDMA 1x chipset
Texas Instruments and STMicroelectronics have jointly announced an open, modular cdma2000 1x chipset that they believe will drive innovation and differentiation in what has to date been a relatively closed market dominated by Qualcomm.
2002-12-02 The impact of interference on CDMA receiver
This article discusses more accurate tests that can be done to ensure mobile phones will respond throughout a wide, dynamic range.
2000-07-01 The CDMA receiver system in an IS-98-A standard
Reciprocal mixing, cross-modulation, spurious response and other RF issues should be considered carefully in the design of a CDMA receiver. The paper offers a derivation of essential specifications, block- and front-end level, for the receiver section of a CDMA handset.
2004-10-01 Testing W-CDMA user equipment with RMC
Reference measurement channel provides a means to analyze areas of receiver performance in the RF domain.
2002-06-05 Tektronix spectrum analyzer speeds WLAN, W-CDMA device testing
The FSQ series of spectrum analyzers from Tektronix Inc. combines the spectrum and vector signal analysis into a single box, thereby shortening the time for testing WLAN and W-CDMA devices.
1999-04-08 Technical challenges and solutions for narrow-band (IS-95) CDMA
CDMA is the fastest growing wireless technology and is projected to be the leading technology worldwide in a few years. This paper presents a complete radio chipset for narrow-band CDMA (IS-95) and discusses the technical problems associated with IS-95. CDMA chipset system performance is presented based on simulation and measurements.
2003-05-22 Tech collaboration to offer ICs for CDMA handsets
STMicro, Texas Instruments, and Nokia have announced that TI and STMicro will offer ICs targeting standard CDMA chipsets.
2005-05-16 TD-CDMA vs. WiMAX in broadband
TD-CDMA outshines WiMAX in wireless broadband applications.
2005-01-20 Switching regulator eyes 2.5G, 3G CDMA RF power amps
The MIC2224 from Micrel is a high efficiency 2MHz PWM synchronous buck switching regulator designed for powering 2.5G and 3G CDMA RF power amplifiers.
2002-01-01 Suppressing errors in W-CDMA mobile devices
This technical article describes the advantages of the W-CDMA specification that is capable of offering wireless Internet access with voice and data capabilities for handset designs.
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