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Patents conforming to technology standards ("essential patents") in a rapidly-changing and technology-intensive industry such as mobile telecommunication industry have strategic values to the holder of the patent. Firms who play in such an industry, either manufacturers, parts suppliers, or non-practicing entities, thus fiercely compete against each other to develop standards-conformant...
This paper addresses the blending of methodologies, applications, and the use of the Internet for delivery of knowledge and instruction in an undergraduate wireless communications engineering course. This solution combines several different delivery methods, such as face-to-face, team collaboration, field measurements, combined with high-end professional simulation software. Two examples of handover...
Recent statistics show an increase in environmental disasters, a fact which is also perceivable to the public as reports of avalanches, earthquakes and landslides mount in media coverage. This paper introduces one part of the I-LOV project, endorsed by the German Federal Ministry of Education and Research. In this project partners from relief organizations, universities and industry investigate enhancements...
Renesas Mobile Corporation (RMC), established on the first of December 2010, comes to the global chipset market with advanced and innovative products and services for mobile phones, car infotainment solutions, consumer electronics and industrial applications. The modem group in RMC comes with a strong pedigree from Nokia. The group has developed all Nokia's in-house modems and formed an essential...
This paper has summarized all kinds of handover problems in the TD-SCDMA networks, and analyse these problems, finally it gives out the optimization solution which could improve the KPI of the TD-SCDMA networks effectively.
This work presents the experimental results related to performance measurements in GSM and GPRS cellular data networks. Two Mobile Terminals were used, in order to take place the scenario. Power Level, Power vs. Time, Modulation Analysis, Modulation Spectrum, (BER) Bit Error Rate and Throughput were considered in this analysis.
The wide adoption of mobile broadband services by users of smartphones and other mobile terminals is being enabled by radio access technologies with better performance than many fixed residential broadband lines. Mobile network operators are upgrading their networks to deliver growing packet traffic cost effectively, while maintaining critical operational functions such as base station synchronization...
In wardriving, test devices in moving vehicles measure received signal strengths (RSSs) from nearby base stations (BSs) and record them with location information, which is a key component in localization technologies. In this article, the authors analyze the wardriving data in real WCDMA, GSM, and Wi-Fi networks and describe how signal dragging degrades their performance. They also propose three methods...
Based on the background analysis of CDMA development, this paper focuses on its market conditions and investment value. The results show that the CDMA lost its market share and its cost return was not good enough because of it didn't fill the customers' needs. However, it pushed the telecommunications industry forward, brought the convenience to customers. And the most important thing is it brought...
In this paper a complete step by step method is described to increase the capacity of Global System for Mobile Communication (GSM) using the Intelligent Underlay Overlay(IUO) with frequency hopping and Discontinuous Transmission (DTX). The IUO splits the available frequencies into two layers, super and regular. Super layer frequencies have tighter reuse factor and can be accessed by only mobile stations...
A review of the evolution of the air interface standards supporting personal mobile services, from voice communications to broadband video and high rate data transmission, leads to a discussion of the impact on technology requirements for the RF components needed for the generation of radio transmission from user equipment.
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