4g

Mobile Communications Presentation:
In March 2002 NTT DoCoMo announced that trials had begun on the next generation of mobile communications. Dubbed '4G', the new I-mode technology will increase data transmission rates (up to 200 times faster than 2G at 20Mbit/sec). 3G data rates are currently 2Mbit/sec, which is very fast compared to 2G's 9.6Kbit/sec. 4G builds on the 3G standard, although it integrates and unifies the different interfaces (W-CDMA, CDMA2000, EDGE, etc).
Since December 2000, NTT DoCoMo and Hewlett-Packard have been jointly developing the software and hardware that make high-speed wireless possible. In October 2001, 3G was successfully rolled-out in Japan, and the new technology will depend on using the established base stations and mobile station equipment. The introduction of 3G technology provided a huge expansion in mobile capacity and bandwidth, and 4G will do the same for the spectrum of broadband communications.
The Japanese Ministry of Posts and Telecommunic...