Nortel Networks has achieved a new industry milestone, demonstrating a 30-fold increase in radio capacity (compared with the UMTS release 99
standardized version that is currently being deployed by operators) using new multiple input, multiple output (MIMO) and multibeam smart antenna
Using these innovations, Nortel Networks has demonstrated wireless data applications, including streaming video, large file transfers and video
conferencing, with peak data rates up to 20 Mbps. These optimized speeds are approximately 10 times faster than speeds specified with UMTS release 99.
MIMO and multibeam smart antenna technologies can position operators to significantly boost the performance of their networks to increase capacity
and offer more bandwidth for users.
MIMO technology developed by Nortel Networks provides a highly-adaptive solution that self-optimizes for a wide range of conditions, including indoor, urban, and suburban deployments. The Nortel Networks configuration uses a compact antenna array design at the base station, which can create significant benefits for zoning compliance and site acquisition.
From a terminal standpoint, the Nortel Networks technology requires less power than other MIMO solutions, a benefit that could extend handset battery life. This technology also protects operator investment, since Nortel Networks Univity Internet Base Transceiver Station radio products are designed to support enhanced MIMO/multibeam smart antenna technologies with a relatively simple upgrade, and with no need for costly hardware changes.
The 20 Mbps milestone was achieved using prototype terminals working in a 5-MHz band UMTS channel at 1900 MHz over infrastructure equipment in Nortel
Networks Wireless Innovation Technology lab in Ottawa, Ontario. An orthogonal frequency division multiplexing (OFDM) modulation format
developed by Nortel Networks (compatible with UMTS protocol evolution) was also used.
Nortel Networks MIMO technologies have been verified in measurements in urban and suburban environments. In 2000, Nortel Networks achieved the industry's first demonstration of MIMO on CDMA2000 1X radio equipment. In 2001, Nortel Networks completed an extensive propagation trial in central London, proving the feasibility of MIMO to provide substantial performance gains in an urban deployment. Nortel Networks is actively working on MIMO standardization with leading industry groups, including the 3GPP and 3GPP2
Nortel Networks MIMO technology is the result of many years of innovation in wireless access technologies, and is integrated with the company's
award-winning smart antenna solution (The CDMA Development Group awarded Nortel Network and Sprint PCS the "3G CDMA Industry Achievement Award" for smart antenna technology in 2002).