<body><script type="text/javascript"> function setAttributeOnload(object, attribute, val) { if(window.addEventListener) { window.addEventListener('load', function(){ object[attribute] = val; }, false); } else { window.attachEvent('onload', function(){ object[attribute] = val; }); } } </script> <div id="navbar-iframe-container"></div> <script type="text/javascript" src="https://apis.google.com/js/platform.js"></script> <script type="text/javascript"> gapi.load("gapi.iframes:gapi.iframes.style.bubble", function() { if (gapi.iframes && gapi.iframes.getContext) { gapi.iframes.getContext().openChild({ url: 'https://www.blogger.com/navbar/28282649?origin\x3dhttps://wirelessyogb.blogspot.com', where: document.getElementById("navbar-iframe-container"), id: "navbar-iframe" }); } }); </script>

Thursday, June 29, 2006

3G Standards

Let us review 3g standards along with some performace metrices like highest data rate supported.

  • CDMA2000 1x, which is currently deployed by some Indian operators offer 144 kbit/s
  • CDMA2000 1xEV-DO (Evolution-Data Optimized). The initial design of 1xEV-DO was developed by Qualcomm in 1999 to meet IMT-2000 requirements for a greater-than 2.5 Mbit/s downlink for stationary communications.
  • W-CDMA (UMTS) was developed by NTT DoCoMo as the air interface for their 3G network FOMA. Later NTT DoCoMo submitted the specification to the International Telecommunication Union (ITU) as a candidate for the international 3G standard known as IMT-2000 which is supossed to offer maximum data rate of 2.3 Mbit/s.

posted by Yogesh @ 4:24 PM   0 comments

0 Comments:

Post a Comment

<< Home