Results 211 to 220 of about 275,566 (246)
Some of the next articles are maybe not open access.
IEEE Vehicular Technology Magazine, 2008
The exposed platform is a first step towards utilizing a flexible SDR GNU radio to quantify the real-world performance of advanced over-the-air technologies, such as 3GPP LTE-type MIMO OFDM systems. We have detailed the hardware and software blocks, demonstrating that the platform is indeed very flexible and versatile.
Kan Zheng +5 more
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The exposed platform is a first step towards utilizing a flexible SDR GNU radio to quantify the real-world performance of advanced over-the-air technologies, such as 3GPP LTE-type MIMO OFDM systems. We have detailed the hardware and software blocks, demonstrating that the platform is indeed very flexible and versatile.
Kan Zheng +5 more
openaire +1 more source
Is Europe set for 3G? [3G communications]
IEE Review, 2004Lack of mobile handsets, reluctance to use video features and a limited number of 3G basestations are still plaguing the rollout of third generation communications networks. This article reviews the current situation of UMTS in Europe along with forecasted future trends.
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DIDERO 3G A STRATEGIC NETWORK PLANNING TOOL FOR 3G MOBILE NETWORKS
International Journal of Information Technology & Decision Making, 2003Strategic Planning for mobile networks has to consider the evolution from the existing 2nd Generation GSM architecture to a long term 3rd Generation UMTS architecture over various intermediate steps in the form of hybrid networks. The study of this evolution requires a corresponding Strategic Planning tool.
Klaus-Dieter Hackbarth +1 more
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Efficiency Evaluation for the 3G and WiMAX
2009 Fifth International Joint Conference on INC, IMS and IDC, 2009When the client moved quickly, from 3G into WiMAX service coverage, then leaved the WiMAX service coverage and accessed to another 3G range of services. At this time, that handoff frequently in a short period of time, and decreased system efficiency, also decreased the QoS. In this research, we use NS-2 to simulate the situations.
Chung-Hsin Liu, Ping-Shin Tsai
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IEEE Potentials, 2001
The authors discuss two complementary technologies at the forefront of the road to third generation systems; these are the General Packet Radio Service (GPRS) and Wireless Application Protocol (WAP) systems.
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The authors discuss two complementary technologies at the forefront of the road to third generation systems; these are the General Packet Radio Service (GPRS) and Wireless Application Protocol (WAP) systems.
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Adoption of 3G+ services in Finland
International Journal of Mobile Communications, 2006Cost-related issues and limitations of the current technology are important thresholds of 3G+ services. Privacy and security are not critical. Benefits are enhanced communication features, flexibility with respect to the user's location and the time of day, and convenience and handiness of small, wireless mobile devices.
Christer Carlsson +2 more
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Unwanted traffic in 3G networks
ACM SIGCOMM Computer Communication Review, 2006The presence of "unwanted" (or background) traffic in the Internet is a well-known fact. In principle any network that has been engineered without taking its presence into account might experience troubles during periods of massive exposure to unwanted traffic, e.g. during large-scale infections. A concrete example was provided by the spreading of Code-
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WCDMA and WLAN for 3G and beyond
IEEE Wireless Communications, 2002The WCDMA air interface was initially designed to support a wide variety of services with different QoS requirements having a maximum bit rate of 2 Mb/s. In order to satisfy the future service and application needs several technical enhancements are being studied and standardized for WCDMA in 3GPP.
Harri Honkasalo +3 more
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Communications Engineer, 2004
The IEEE 802.16 family of standards uses OFDM or OFDMA (orthogonal frequency division multiple access) operating in TDD or FDD mode. We show that OFDM offers a number of advantages for very high data rate applications, whereas OFDMA is proposed for use by remote sites in the uplink.
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The IEEE 802.16 family of standards uses OFDM or OFDMA (orthogonal frequency division multiple access) operating in TDD or FDD mode. We show that OFDM offers a number of advantages for very high data rate applications, whereas OFDMA is proposed for use by remote sites in the uplink.
openaire +1 more source
Mitigating 3G interferrence to GPS due to coexistence in 3G handset
Proceedings of the IEEE 2009 National Aerospace & Electronics Conference (NAECON), 2009Co existence of Global Positioning System services (GPS) with cellular and other services and features in a mobile handset presents challenges to GPS performance. Particularly challenging is the over the air (OTA) interface to the GPS receiver that results from carriers like the Global System for Mobile (GSM) and Wideband Code Division Multiple Access (
Taher AlSharabati, Yinchao Chen
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