HONG KONG-The CDMA Development Group announced that the standard for CDMA2000 1x EV-DO Revision B is on schedule for publication in the first quarter of 2006 and should significantly increase the technology’s data throughput by allocating multiple radio-frequency carriers across wider frequency blocks.
“EV-DO Rev. B will mark another breakthrough in mobile communications and will enable operators to retain their first-to-market advantage in advanced capabilities, while increasing their system capacity and lowering cost of delivery,” said Perry LaForge, executive director of the CDG. “CDMA operators will be well-positioned to succeed in highly competitive markets today and in the future.”
The group noted that Rev. B introduces a 64-Quadrature Amplitude Modulation scheme, and will deliver peak rates of 73.5 megabits per second in the downlink and 27 Mbps in the uplink through the aggregation of 15 1.25 MHz carriers within 20 MHz of bandwidth.
The CDG said that in addition to supporting mobile broadband data and OFDM-based multicasting, the lower latency characteristics of Rev. B will improve the performance of latency-sensitive applications such as Voice over Internet Protocol, push-to-talk over cellular, video telephony, concurrent voice and multimedia, and multi-player online gaming. The CDG also explained that since many IP-based applications are real-time in nature, the standard is designed to support interactive voice communications simultaneously with data sessions-without cutting into handset battery life.
The CDG added that Rev. B is compatible with CDMA2000 1X, 1x EV-DO Release 0 and 1x EV-DO Revision A and was developed by the 3GPP2 organization.
