DoCoMo and Fujitsu Laboratories have made progress in jointly developing prototype wireless base station equipment, and maximum downlink transmission speeds of approximately 900Mbps have now been achieved through the application of MIMO technology, a core technology for high-speed, high-volume wireless communications.
In November 2006 Fujitsu was selected by DoCoMo to develop and manufacture prototypes and commercial equipment for DoCoMo's "Super 3G" wireless base stations. Since then, DoCoMo and Fujitsu Laboratories have made good progress.
Since being selected to develop and manufacture DoCoMo's Super 3G wireless base station equipment, Fujitsu and Fujitsu Laboratories have worked with DoCoMo in developing the required technologies, and the companies have succeeded in developing a prototype wireless base station that achieves maximum downlink transmission speeds of approximately 900Mbps when using four antennas each (4x4 MIMO) for Super 3G base station transmission and mobile station reception as well as employing Fujitsu Laboratories' short-delay, high-speed error correction decoding technology.
Going forward, along with applying the results of development and evaluation work on MIMO and other Super 3G prototype technologies, Fujitsu will work to further refine the high-efficiency amplifiers and high-performance baseband processing technology it has developed for 3G wireless base station equipment in order to develop optimized commercial Super 3G wireless base station equipment that is compact, energy-efficient, economical, and highly scalable.
Fujitsu's prototype equipment will be exhibited at CEATEC Japan 2007 (2-6 Oct).
In other news, ABI Research has a new report that claims UMTS Long Term Evolution (LTE) will dominate the world’s mobile infrastructure markets after 2011. While LTE will encounter competition from other mobile broadband technologies, its supporters point to its flat architecture, low latency, and IP NGN (Next-Generation Network) capability to provide a range of SIP (Session Initiation Protocol) services.
However LTE faces competition from other broadband wireless technologies and it will need to demonstrate clear technical and economic advantages to convince network operators. The mobile variant of WiMAX will start to appear in 2007 as the WiMAX Forum Certification program ramps up. The industry is also working on HSPA+, which could offer the same performance in a 5 MHz bandwidth. Without additional spectrum, operators could face a difficult choice.
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