WCDMA


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WCDMA

Wideband Code Division Multiple Access

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, cellular vs. Wi-Fi, GSM, CDMA and 3GPP.


References in periodicals archive ?
Table 12: Global 10-Year Perspective for WCDMA Pathway
The MSM6255 chipset is a highly integrated solution for WCDMA and EGPRS networks worldwide and is optimized to deliver in-demand mainstream multimedia applications, including streaming audio and video, high-quality snapshots and location-based services.
One of these major networks currently offers a service that works on a dual-mode handset, combining WCDMA in Japan and GSM internationally.
All solutions in the MSM6xxx chipset family are based on radioOne zero intermediate frequency (ZIF) architecture, providing reduced bill-of-materials (BOM) costs and ultimately more cost-effective solutions for WCDMA (UMTS) wireless devices.
The report also shows that Huawei is on its way to becoming the number three largest player in the WCDMA market.
Nokia Flexi WCDMA Base Station allows for an easy technology evolution to multiradio networks, as its modules can also be fitted inside existing Nokia UltraSite EDGE Base Station cabinets.
WCDMA is a 3G wireless technology that allows users to send and receive mobile voice, data, image and video communications at speeds up to 2 megabytes per second (Mbps) over a broad range of frequencies.
For instance: replacing six discrete modules and 18 SMDs by two integrated front-end modules in a single-band WCDMA application takes board area down from typically 140mm2 to 85mm2, creating space for new phone features, reducing inventory costs and speeding time-to-market.
It is significant that these connections were carried out in a commercial GSM/EDGE network that has been upgraded to support handovers from WCDMA.
carriers are moving forward with their plans to build and deploy WCDMA networks across the nation, and we are ready to provide them with the equipment and services, as well as intelligent functionalities for GSM/EDGE and WCDMA interworking, they need to do so quickly, efficiently, and cost-effectively," said Louison.
See TriQuint's new GSM/GPRS, EDGE, WCDMA and Bluetooth([R]) system solutions along with its line of Network and CDMA products at the GSM World Congress in Barcelona, Spain (12th-15thFebruary) in Hall 2, Level 1, Space D22, or contact a local sales representative for more information.