Qualcomm and Teleepoch
Enter Into a 3G CDMA Subscriber Unit License Agreement, October
6, 2007
MTN chooses Cambridge Broadband
Networks for multi-service wireless network in Rwanda, October 6,
2007
Brazilian government to
publish 3G bidding rules soon, October 6, 2007
KTF 3G service suffers
from technical problems, October 6, 2007
Argentina’s Personal
lunches 3G service in Rosario, October 6, 2007
Russia has it's first 3G
network, October 6, 2007
AT&T could drop Alcatel-Lucent
as 3G mobile network supplier, October 6, 2007
Enea Extends License Agreement
with ZTE for 3G Handsets, October 2, 2007
LG to unveil premium handsets
in Brazil, October 2, 2007
KTF 3G subscribers doubled
in less than 3 months, October 2, 2007
3G policy in India will
be non-uniform, October 2, 2007
- previous news
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NTT DoCoMo to Conduct Field Trial of 4G Mobile Communications
May 30, 2003
NTT DoCoMo announced plans for a field trial of a fourth-generation (4G)
mobile communications system in Yokosuka, Kanagawa Prefecture, where a
DoCoMo R&D center is located.
DoCoMo has been conducting research on 4G mobile communications technology
since 1998. In indoor experiments announced last October, DoCoMo's 4G
system demonstrated maximum information bit rates of 100 Mbps for the
downlink and 20 Mbps for the uplink.
The field trial announced today is DoCoMo's next step toward the development
of practical 4G technologies, as well as a further contribution by the
company toward the establishment of a 4G global standard, which is now
being discussed by the International Telecommunication Union's Radiocommunication
Sector. (ITU-R).
The field trial will employ Variable Spreading Factor Orthogonal Frequency
and Code Division Multiplexing (VSF-OFCDM) and Variable Spreading Factor
Code Division Multiple Access (VSF-CDMA) technologies. VSF-OFCDM enables
downlink connections of extremely high speeds, both indoors and outdoors,
while VSF-CDMA realizes high-speed, high-efficiency packet transmissions
for the uplink.
DoCoMo will evaluate the following high-speed transmissions technologies
during the field trial:
- Effective packet transmission methods
- Adaptive modulation and channel coding scheme
- Adaptive retransmission control
- Adaptive beam forming based on predicted direction of arrival
The Kanto Bureau of Telecommunications granted DoCoMo a preliminary license
to conduct the field trial.
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3G Motorola A920
