Companies list. Letter N
NSTL, Inc.
 | "For nearly two decades NSTL has been the world's leading information technology testing and quality assurance organization. Established in 1983, NSTL has been on the forefront of most of the major advances in the IT industry and has tested thousands of products in categories such as wireless devices, mobile computers, PCs, servers, peripherals and software applications. This experience has enabled us to serve our clients with unrivaled testing and evaluation capabilities. Today, NSTL continues to set the standard for high-quality, objective testing through the following service offerings Logo and standards programs
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NTT Communications
| NTT is the world's largest provider of telecommunications services, with a customer base approximately 60 million in Japan alone. Since privatization in 1985, NTT has been diversifying extensively, building new subsidiaries, developing emerging technologies and expanding into new market. As of July 1, 1999, NTT has reorganized, and NTT Communications Corporation has commenced operations as a new global service provider.
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NTT Do Como
| NTT DoCoMo, Inc. is a Japanese wireless telecommunications services provider and a cellular telephone service operator. The Company has an aggregate cellular subscriber base of approximately 40.8 million. NTT DoCoMo offers a range of high-mobility telecommunications services, such as cellular services, personal handyphone system (PHS) services, third-generation (3G) services and other specialized wireless telecommunications services, including Quickcast services (formerly, paging services), satellite mobile communications services and in-flight telephone services. Although the Company's basic services continue to be voice services, it is increasingly focusing on the development of wireless data transmission and mobile multimedia services, such as its i-mode Internet service and its 3G services.
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NTT DoCoMo
 | The revolution that began with the invention of the mobile phone is changing our world and NTT DoCoMo has always been at the leading edge of this revolution. Providing a wide variety of leading-edge mobile multimedia services to more than 52 million customers NTT DoCoMo is one of the world leaders in mobile communications. Our 1999 launch of i-mode the worlds most popular mobile internet service providing e-mail and internet access to over 47 million subscribers and then FOMA in 2001 as the worlds first 3G mobile service based on W-CDMA transformed the landscape of mobile communications in Japan and won the DoCoMo brand global recognition. But these were just the first steps toward our goal of transforming the mobile phone in to a "Lifestyle Infrastructure." Introduced only recently our "Osaifu-Keitai" mobile phones with wallet functions which multiplies the convenience of the handset with cashless transactions for everything from riding the subway to shopping...
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NTT DoCoMo 4G Technology
 | NTT DoCoMo Inc. announced today that high-speed packet transmission with 1 Gbps data rate in the downlink was achieved successfully in a laboratory experiment using fourth-generation (4G) mobile communication radio access equipments on August 20 2004 considering field experiments in the early next year. The implemented 4G radio access equipments employ variable-spreading-factor spread orthogonal frequency division multiplexing (VSF-Spread OFDM) radio access method and multiple-input-multiple-output (MIMO) multiplexing technique using new signal detection algorithm in order to achieve 1Gbps data transmission with 100MHz bandwidth in the downlink.
DoCoMo achieved 100Mbps and 20Mbps data rate transmission in the downlink and uplink respectively in the outdoor environments with the moving speed of about 30 km/h in July 2003.
NTT DoCoMo is currently conducting indoor tests with various radio conditions as preparation for future field tests to develop a 4G global standard in coor
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