Thursday, April 9, 2009

WCDMA

• WCDMA stands for Wideband Code Division Multiple Access.

• WCDMA is one of the five air-interfaces adopted by the ITU under the name "IMT-2000 Direct Spread”.

• WCDMA can support multiple and simultaneous communications such as voice, images, data, and video.


–Very high and variable bit rates:

•144 kbps: vehicle speed, rural environ.
•384 kbps: walking speed, urban outdoor.
•2048 kbps: fixed, indoor.

Different QoS for different connections.

High spectrum efficient.

Coexistence with current systems.

• WCDMA is being specified by the 3GPP (Third Generation Partnership Project).

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