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CDMA2000 will bring higher download speeds with next generation EV-DO specifications

Recently the CDMA Development Group, or CDG, released details about the latest CDMA2000 roadmap outlining things we should expect to see including revisions to 1xEV-DO with speeds reaching 200Mb/sec down in standards to be completed around mid-2007. Take a look at the milestones outlined by the CDG:
  • CDMA2000 1xEV-DO Revision A: The commercial availability and first deployments of CDMA2000 1xEV-DO Revision A in Asia and North America will start at the end of 2006, with wide deployment in 2007. Revision A leverages CDMA's IP infrastructure and introduces enhancements that support latency-sensitive and bandwidth-intensive applications such as Voice over IP (VoIP) and Instant Multimedia Messaging (IMM), and it allows operators to provide integrated voice, data and video services at a lower cost and across multiple networks. KDDI, LG Telecom, Sprint Nextel, Telecom New Zealand and Verizon Wireless are among the operators that have committed to or have begun deploying Revision A.
  • CDMA2000 1xEV-DO Revision B: Approved for publishing by 3GPP2 TSG-C in March 2006, the Revision B standard increases throughput to 73.5 Mbps on the downlink and 27 Mbps on the uplink via multiple carriers and a 64-Quadrature Amplitude Modulation scheme.
  • CDMA2000 1xEV-DO Revision C: This advanced interface will deliver higher data rates and spectral efficiency along with low latency, making it ideal for enriched multimedia services. Revision C will support flexible and dynamic channel bandwidth scalability from 1.25 MHz up to 20 MHz and will be backward-compatible with Revisions A and B. Currently, 3GPP2 is evaluating various proposals, which include OFDM, MIMO, SDMA and Interference Cancellation techniques, with the harmonization of the proposals to be completed by June of this year.
According to CDG.org, Revision A services detailed above will be available for commercial use in 2007 while Revision B services will be available and ready to use in 2008. There is no word yet on when the Revision C standards will be implemented for production but we assume as early as 2009 if the current trend keeps up.




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