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  1. UMTS - Wikipedia

    en.wikipedia.org/wiki/W-CDMA

    Though W-CDMA does use a direct sequence CDMA transmission technique like CDMA2000, W-CDMA is not simply a wideband version of CDMA2000. The W-CDMA system is a new design by NTT DoCoMo, and it differs in many aspects from CDMA2000. ...

  2. W-CDMA - Wikipedia

    ja.wikipedia.org/wiki/W-CDMA

    W-CDMA (Wideband Code Division Multiple Access) とは第3世代携帯電話 (3G) の無線アクセス方式の一つである。IMT-2000規格ではIMT-DS (Direct Spread)、3GPP規格ではUTRA-FDD (UMTS Terrestrial Radio Access-FDD) に規定されている。

  3. 通用移动通讯系统(Universal Mobile Telecommunications System,缩写:UMTS)是当前最广泛采用的一种第三代(3G)移动电话技术。它的无线接口使用W-CDMA技术,由3GPP定型,代表欧洲对ITU IMT-2000关于3G蜂窝无线系统需求的回应。 UMTS有时也叫3GSM,强调结合了3G ...

  4. 分碼多重進接 - 維基百科,自由的百科全書

    zh.wikipedia.org/zh-tw/分碼多重進接

    分碼多重進接(英語:Code Division Multiple Access,即:CDMA)或碼分多址、分碼複存,是一種多址接入的無線通訊技術。CDMA最早用於軍用通訊,但時至今日,已廣泛應用到全球不同的民用通訊中。在CDMA行動通訊中,將語音訊號轉換為數位訊號,給每組數據語音封包 ...

  5. W-CDMA - Wikipedia

    ro.wikipedia.org/wiki/W-CDMA

    W-CDMA sau WCDMA sau Wideband CDMA este un standard de telecomunicație prin unde radio, folosit în rețelele de telecomunicație/telefonie mobilă de tip GSM - 3G. Detalii tehnice W-CDMA ste o variantă de CDMA (din engleză de la Code Division ...

  6. cdmaOne - Wikipedia

    en.wikipedia.org/wiki/CdmaOne

    The proprietary name for IS-95 is cdmaOne. It is a 2G mobile telecommunications standard that uses CDMA, a multiple access scheme for digital radio, to send voice, data and signaling data (such as a dialed telephone number) between mobile ...

  7. CDMA2000 - Wikipedia

    en.wikipedia.org/wiki/CDMA_2000

    ... abbreviated as EV-DO or EV, is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access.It uses multiplexing techniques including code division multiple access (CDMA) ...

  8. W-CDMA — Wikipédia

    fr.wikipedia.org/wiki/W-CDMA

    Variante de la technique CDMA, le W-CDMA (Wideband Code Division Multiple Access, « multiplexage par code à large bande ») est une technique de codage utilisée dans la partie radio (UTRAN) des réseaux de téléphonie mobile UMTS, de troisième ...

  9. GSM - Wikipedia

    en.wikipedia.org/wiki/GSM_network

    The GSM logo is used to identify compatible devices and equipment. The dots symbolize three clients in the home network and one roaming client.[1] The Global System for Mobile Communications (GSM) is a standard developed by the European ...

  10. Code-division multiple access - Wikipedia

    en.wikipedia.org/wiki/CDMA

    Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication ...

    • UMTS 跟 WCDMA 差別在哪裡!??

      ...不是指CDMA標準)方法的寬頻擴頻3G移動通訊無線介面。http://zh.wikipedia.org/wiki/W-CDMA

    • 哪些國家已使用3G系統??

      ... States美國 (CDMA2000 1x) (W-CDMA in testing)Uzbekistan烏茲別克...越南 (CDMA2000 1x)請參考:http://zh.wikipedia.org/wiki/3 ...

    • 3G手機可以在哪些國家漫遊

      ...的料可以供你參考一下: (資料來源:http://zh.wikipedia.org/wiki/3G%E6%8A%80%...) 阿根廷 (CDMA2000 1x) 澳大利亞 (W-CDMA) ...

  1. W-CDMA wikipedia 相關
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