HSDPA,W-CDMA,Normal,false,Micr communication HSDPA in W-CDMA
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Normal 0 false false false MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable{mso-style-name:"Table Normal";mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-noshow:yes;mso-style-parent:"";mso-padding-alt:0in 5.4pt 0in 5.4pt;mso-para-margin:0in;mso-para-margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:10.0pt;font-family:"Times New Roman";mso-ansi-language:#0400;mso-fareast-language:#0400;mso-bidi-language:#0400;}High Speed Downlink Packet Access (HSDPA) is a 3G packet-baseddata service in W-CDMA downlink with data transmission up to 8-10 Mbps (and 20Mbps for MIMO systems) over a 5MHz bandwidth in WCDMA downlink. HSDPA allowsnetworks based on Universal MobileTelecommunications System (UMTS) to have higher data transfer speeds andcapacity. HSDPA implementations includes Adaptive Modulation and Coding (AMC),Multiple-Input Multiple-Output (MIMO), Hybrid Automatic Request (HARQ), fastcell search, and advanced receiver design. In 3rd generation partnership project (3GPP) standards,Release 4 specifications provide efficient IP support enabling provision ofservices through an all-IP core network and Release 5 specifications focus onHSDPA to provide data rates up to approximately 10 Mbps to support packet-basedmultimedia services. MIMO systems are the work item in Release 6specifications, which will support even higher data transmission rates up to 20Mbps. HSDPA is evolved from and backward compatible with Release 99 WCDMAsystems. Beganto Beganto EngineeringServices
HSDPA,W-CDMA,Normal,false,Micr