【資料名稱】：WCDMA Air Interface

【資料作者】：愛立信

【資料日期】：2004

【資料語言】：中文

【資料格式】：PDF

【資料目錄和簡介】：

WCDMA air interface training
lWorld Administrative Radio Conference (WARC) of the ITU
(International Telecommunications Union) in 1992 chose
frequencies around 2 GHz as available for use by third generation
mobile systems.
lWithin the ITU these third generation systems are called
International Mobile Telephony 2000 (IMT-2000).
lWithin IMT -200, several different air interfaces are defined for third
generation systems based on either CDMA or TDMA technology.
lThe same air interface,WCDMA, is to be used in Europe and Asia,
including Japan and Korea using the frequency bands around 2
GHz.
lIn North America that spectrum has already been allocated for
operators using second generation systems and no new spectrum
is available for IMT-2000. Thus third generation services must be
implemented within the existing bands.