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 ?
This means operators need to be innovative to ensure WCDMA offers the best customer experience, at the lowest possible cost, with the maximum spectrum efficiency and manageability.
Qualcomm confirmed its need for another top tier WCDMA chips purchaser, in addition to Samsung Electronics and LG Electronics.
The WCDMA portfolio would be expanded into the frequency bands of 850MHz, 1800MHz (1700MHz for Japan) and 1.
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.
The Zero Touch WCDMA approach industrializes the Flow of Users solution across all features and parameters in a 3G/WCDMA network, resulting in what can be termed a gold standard.
Since mid-2005 a total of 93 devices have been introduced, representing a 50% increase in the past six months, while some 37 suppliers have introduced WCDMA products in the last 12 months, an increase from 20 suppliers.
Under an expansion agreement FCCI has delivered Nokia WCDMA radio access network, including WCDMA base stations, Radio Network Controllers and other network equipment, plus operational support services.
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.
The WCDMA system will be based on UMTS R4, including GGSN, HLR, MGW, MSC, RNC, SGSN and Node B equipment.
According to Nokia, WCDMA to GSM handovers are crucial to 2G-3G interworking, and will be important to the success of the introduction of WCDMA.