《電子技術(shù)應(yīng)用》
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CDMA2000簡介

2007-08-08
作者:信息產(chǎn)業(yè)部

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title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2" title="3GPP2">3GPP2負(fù)責(zé)具體標(biāo)準(zhǔn)化工作。目前CDMA2000有由3GPP2制定的Release 0、A、B、C和D五個(gè)支持CDMA2000 1X及其增強(qiáng)型技術(shù)的版本,以及由EIA/TIA發(fā)布的支持CDMA2000 1X EV-DO的IS-856和IS-856A標(biāo)準(zhǔn)。

  CDMA2000 1x采用直接序列擴(kuò)頻碼分多址(DS-CDMA)、頻分雙工(FDD)方式,碼片速率為1.2288Mcps,載波帶寬為1.25MHz。

  CDMA2000 1x EV-DO(也稱為HRPD)技術(shù),主要對數(shù)據(jù)業(yè)務(wù)進(jìn)行了增強(qiáng),不支持語音,在1.25MHz的帶寬內(nèi)可提供最高2.4Mbps的下行數(shù)據(jù)傳輸速率" title="傳輸速率">傳輸速率。DO Rel 0版本已經(jīng)在韓國、美國和日本等國家商用。目前正在向DO Rel A版本發(fā)展,該版本在1.25MHz的帶寬內(nèi)可提供最高3.1Mbps的下行數(shù)據(jù)傳輸速率。在DO Rel A的基礎(chǔ)上,采用多載波" title="多載波">多載波捆綁的方式進(jìn)一步提高數(shù)據(jù)速率,形成了DO Rel B標(biāo)準(zhǔn),也稱為空中接口演進(jìn)(AIE)Phase 1,該標(biāo)準(zhǔn)已經(jīng)發(fā)布。而目前3GPP2正在制定 AIE Phase 2標(biāo)準(zhǔn),與3GPP的LTE演進(jìn)類似,同樣以O(shè)FDM、MIMO等技術(shù)為基礎(chǔ)。

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