Reston, VA, United States
Reston, VA, United States

Time filter

Source Type

Koduru C.,Boeing Company | Tomei B.,Boeing Company | Sichi S.,Boeing Company | Suh K.,Boeing Company | And 2 more authors.
29th AIAA International Communications Satellite Systems Conference 2011, ICSSC-2011 | Year: 2011

This paper discusses the advanced Space Based Network (SBN) built by Boeing for LightSquared, Virginia, USA. The first SBN has been accepted by LightSquared in early 2011, and is getting ready to begin the 4G broadband network services for mobile applications in North America. This hybrid SBN has several elements; like, LightSquared patented Ancillary Terrestrial Component (ATC) technology, advanced geo-mobile satellite with 22m L-band reflector with an on-board channelizer, feederlink gateways and Ground Based Beam Former (GBBF) that interfaces to the Satellite Base Station Subsystem (SBSS). The system is capable of beam forming up to 1500 L-band spot cells, 500 spot cells with adaptive interference cancellation in the return path and support 30MHz L-band spectrum with four gateways. The SBN has unique features like L-band reflector thermal deformation compensation, electronic beam steering and the ability to generate spot cells, regional or shaped beams. The in-orbit tests including the beam cuts show the performance that meets the needs of advanced 4G mobile network commercial services. In addition, several necessary functional threads that support and enhance the ground based beam forming such as, service band inter channel amplitude and group delay equalization, Doppler compensation, uplink power control, high power management, relative calibration and pointing Beacon, are discussed. The material presented here demonstrates the leading-edge communications solution that draw on Boeing's proven performance on large-scale integration programs. © 2011 by The Boeing Company, Space and Intelligence Systems. Published by the American Institute of Aeronautics and Astronautics, Inc.

Marinkovic Z.,University of Niš | Brazil T.,University College Dublin | Gupta R.,LightSquared
IEEE Microwave Magazine | Year: 2014

The IEEE Microwave Theory and Techniques Society (MTT-S) semiannually awards scholarships of US$1,500 to undergraduate and pregraduate students to encourage their interest in microwave and RF technologies. Applicants must be undergraduate/ pregraduate students at the time of submission and have an MTT-S member serving as their faculty mentor. Additional travel funds are available for the awardees to attend an MTT-S (co)sponsored microwave conference. The recipients are formally recognized at the International Microwave Symposium Student Awards Luncheon. © 2000-2012 IEEE.

Crupi G.,Messina University | Li C.,Texas Tech University | Gupta R.K.,LightSquared
IEEE Microwave Magazine | Year: 2015

Presents the recipients of the 2015 MTT-S Graduate Student Fellowship awards. © 2000-2012 IEEE.

Marinkovic Z.,University of Niš | Gupta R.,LightSquared
IEEE Microwave Magazine | Year: 2015

Presents the recpients of the Spring 2015 MTT-S Undergraduate/Pregraduate Scholarship awards. © 2000-2012 IEEE.

Lightsquared | Date: 2010-04-16

Telecommunications equipment, namely, cellular telephones; Broadband wireless communications equipment, namely, telecommunications base station equipment for cellular and fixed networking and communications applications; network management software for voice and data networks; GPS navigation devices and components used therewith; navigation and positioning equipment, namely, satellite aerials, dishes and radios; computer software for use in transmitting data and/or voice over a wireless or wireline network, hardware and firmware for use in transmitting data and/or voice over a wireless or wireline network; electronic devices and software for use in transmitting data and/or voice over a wireless or wireline network; wireless data modems, portable network routers, hand-held wireless modems and network routers, PC wireless cards, and mobile computing and operating platforms consisting of wireless gateways used for linking terminals via a computer network, radio or fixed line networks; wireless embedded modem modules; computer software for use in wireless modems, portable routers, and wireless gateways for linking terminals via computer network, radio or fixed line networks; wireless communication devices for providing voice, data, or image transmission in wireless communication services to one or more devices; portable computer network routers, hand-held wireless computer network routers.

Loading LightSquared collaborators
Loading LightSquared collaborators