In the 4th generation, aka, IMT-Advanced, higher transmission speeds and more flexible system are the targets.
The super high transmission speeds of max. 100Mbps for outdoors and max. 1Gbps for indoors will be realized, which significantly exceed the current systems.
DOCOMO's R&D is currently confirming the basic performance through field experiments etc.
4G-related articles
R&D on 4G is explained on PDF.
Field Experiment on 5-Gbit/s Ultra-high-speed Packet Transmission Using MIMO Multiplexing in Broadband Packet Radio Access
An ultra-high-speed packet transmission experiment for achieving a transmission data rate of approximately 5 Gbit/s (spectral efficiency of 50 bit/s/Hz) was performed using a 100-MHz channel bandwidth in broadband packet radio access.
Field Experiment on 5-Gbit/s Ultra-high-speed Packet Transmission Using MIMO Multiplexing in Broadband Packet Radio Access(PDF format:1.3MB) 7 pages
4G-related Technical Journals
This is the introduction of the Technical Journals that carry 4G-related articles.
- VOL.12 NO.2
Special Articles on LTE-Advanced Technology -Ongoing Evolution of LTE toward IMT-Advanced-/Overview of LTE-Advanced and Standardization Trends
- VOL.12 NO.2
Special Articles on LTE-Advanced Technology -Ongoing Evolution of LTE toward IMT-Advanced-/CA for Bandwidth Extension in LTE-Advanced
- VOL.12 NO.2
Special Articles on LTE-Advanced Technology -Ongoing Evolution of LTE toward IMT-Advanced-/MIMO and CoMP in LTE-Advanced
- VOL.12 NO.2
Special Articles on LTE-Advanced Technology -Ongoing Evolution of LTE toward IMT-Advanced-/Relay Technology in LTE-Advanced
- VOL.10 NO.1
The Future Development of IMT-2000 and Systems Beyond (IMT-Advanced) - Report from ITU-R World Radiocommunication Conference 2007 (WRC-07) -
- VOL.9 NO.2
Field Experiment on 5-Gbit/s Ultra-high-speed Packet Transmission Using MIMO Multiplexing in Broadband Packet Radio Access
- VOL.8 NO.1
Field Experiments of 2.5Gbit/s High-Speed Packet Transmission Using MIMO OFDM Broadband Packet Radio Access
- VOL.7 NO.2
Special Articles on 1-Gbit/s Packet Signal Transmission Experiments toward Broadband Packet Radio Access/Configuration and Performances of Implemented Experimental Equipment
- VOL.7 NO.2
Special Articles on 1-Gbit/s Packet Signal Transmission Experiments toward Broadband Packet Radio Access/Experimental Equipment and Technology Overview
4G-related topics
Theses are the 4G-related topics.
- 2011/2/7 DOCOMO Begins Field Experiments of 4G LTE-Advanced System
- 2007/2/9 NTT DoCoMo Achieves World's First 5Gbps Packet Transmission in 4G Field Experiment
- 2006/2/23 NTT DoCoMo Achieves World's First 2.5Gbps Packet Transmission in 4G Field Experiment
- 2005/6/23 NTT DoCoMo Achieves 1Gbps Packet Transmission in 4G Field Experiment
- 2004/12/17 NTT DoCoMo Achieves 1Gbps Packet Transmission in 4G Radio Access

