WCDMA


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WCDMA

Wideband Code Division Multiple Access
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WCDMA

(Wideband CDMA) A 3G cellular technology that uses the CDMA air interface. WCDMA works on WCDMA cellphones as well as laptops and portable devices with WCDMA modems. Falling under both the UMTS and IMT-2000 umbrellas, WCDMA enables GSM carriers to provide a higher data rate than the EDGE network. Supporting both voice and data, WCDMA provides a modest speed increase, and many GSM operators jumped to HSPA for data, which is also based on WCDMA, while keeping GSM for voice. See HSPA, UMTS and IMT-2000.

WCDMA and CDMA
Although WCDMA is based on CDMA, its implementation is different. Whereas CDMA uses one or more 1.25 MHz channels, WCDMA uses two 5 MHz channels. WCDMA supports AAC music, AMR speech and MPEG-4 and H.264 video using the .3GP file extension. See cellular generations, Wi-Fi vs. cellular, GSM, CDMA and 3GPP.


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References in periodicals archive ?
One of these major networks currently offers a service that works on a dual-mode handset, combining WCDMA in Japan and GSM internationally.
"Japan is in the forefront of WCDMA market deployment, as well as being one of Ericsson's most significant markets and this gives Ericsson an excellent position for future 3G systems worldwide."
"QUALCOMM is pleased to license 4G Systems for the development, manufacture and sale of WCDMA and TD-SCDMA modem cards and routers," said Marvin Blecker, president of QUALCOMM Technology Licensing.
For this third edition, there is expanded material on areas such as HSDPA, push-to- talk over cellular, new WCDMA field measurement results, antenna beamforming, and multiuser detection.
In the end, spending on upgrading these networks to WCDMA will dominate total 3G investments over the next five years.
has selected QUALCOMM CDMA Technologies' (QCT) MSM5200 Mobile Station Modem (MSM) integrated circuit and system software solution for SANYO handsets to meet the IMT-2000 Wideband CDMA (WCDMA) mode for the third-generation (3G) Universal Mobile Telecommunications System (UMTS).
QUALCOMM Incorporated (NASDAQ:QCOM) has streamlined the deployment process for providing location services on WCDMA (UMTS)/HSDPA/GSM/GPRS/EDGE networks around the world.
This article describes a new high performance power amplifier (PA) for wide-band code division multiple access (WCDMA) applications.
Under the three-year agreement Ericsson will deliver WCDMA radio base stations to enhance the operator's network coverage and add the latest Ericsson HSPA functionality.