An Efficient Integration of GPS and WCDMA Radio Front-Ends

Spiegel, S.J.; Kovacs, I.

doi:10.1109/tmtt.2004.825665

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…However, in some applications, the GPS technology is applied for obtaining a time stamp and time synchronization of different processes moreover, for triggering different events. In car position, control and navigation systems [1], [2], [3], [4], [5], [6], physics [7], [8], aircrafts [9], railway transportation [5], [10], user position [11], telecommunications [12], geoscience [8], [13], [14], [15], [16], automotive safety systems [17], etc. the GPS technologies are wildly used.…”

Section: Introductionmentioning

confidence: 99%

A Complex GPS Safety System for Airplanes

Dobrea

Huţan

2009

Intelligent Systems and Technologies

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Abstract. There are many applications where the exact position and dynamics of different objects are needed in real time. We propose a system that is able to locate simultaneously several "objects" and to present them, in real time, on a map. The system is dedicated mainly to airports for tracking maintenance cars and persons (in this last case the system works as a personal locator device) and to avoid disasters that could happen on the runway. Several results and aspects of the system are investigated and presented.

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Section: Introductionmentioning

confidence: 99%

A Complex GPS Safety System for Airplanes

Dobrea

Huţan

2009

Intelligent Systems and Technologies

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“…The multiple-input multiple-output (MIMO) antennas have been deeply explored due to their potential to fulfill some of the most important requirements of the modern wireless communication systems, which are higher data rate, shorter latency, and reduction in fading effects, to name a few [73], [74]. However, the mutual coupling between inter-elements of a MIMO antenna is able to produce several drawbacks, such as the degradation of the radiation features and low carrier to noise ratio, for instance [75], which is caused by the signal leakage via conducting currents on the metallic background or surface wave along substrates [76]. To attenuate the mutual coupling in arrays, electromagnetic band-gap (EBG) [77], [78] and defected ground structures (DGS) [79], [80] have been efficiently used.…”

Section: Mutual Coupling Reduction On a Spatially Close Microstrip Arraymentioning

confidence: 99%

An Ultrawideband Metamaterial Absorber and a Parameter Retrieval Method

ARAUJO¹

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To begin with, I would like to thank my mother, Geilda Moura, for the support, love, and words of wisdom. I would like to express my sincere gratitude to my advisor, Professor Glaucio Siqueira, for the enthusiasm, personality and guidance without which this journey would have been quite harder. I also would like to thank Professor Marbey Mosso, for many discussions on electromagnetism and life, and also for the valuable advices. I would like to thank Bianca Campinho, for the encouragement and unmeasurable contributions to this work. I am grateful to the professors Cynthia Junqueira, Mauricio Weber and Erich Kemptner for their helpful contributions and many technical suggestions. I would like to thank my lab colleagues and friends Julio Acosta, Yoiz Nuñez, and Johnes Ricardo for all support. I thank PUC-Rio for the scholarship, financial support, and infrastructure granted to me. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES)-Finance Code 001. Finally, I would like to thank my family and friends for all support.

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“…On the other hand, recent developments in the positioning technology in the context of WCDMA systems (e.g. based on Time-Differenceof-Arrival [1] or using the Global Positioning System GPS [2]), provide strong assurance that accurate position measurements will become a viable reality in the near future. The location information obtained by these techniques may provide better predictions of future resource availability, and therefore, it can be exploited to develop more advanced RRM (Radio Resource Management) strategies that increase the system efficiency.…”

Section: Introductionmentioning

confidence: 99%

A Location-Aware Resource Reservation Algorithm with User Class Differentiation in WCDMA

Sánchez–González

Perez-Romero

Sallent

2006 IEEE 63rd Vehicular Technology Conference

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This paper proposes and evaluates a radio resource reservation algorithm that takes advantage of location-aware techniques in order to facilitate handovers in a WCDMA system, specially for users following straight trajectories. The mobility characteristics of these users may provide certain information about the instant of time when they will require a handover process. The proposed resource reservation algorithm takes into account the user location information in order to manage the available radio resources in a more efficient way. The proposed algorithm optimizes the existing trade-off between the blocking probability of new connection requests and the dropping probability of users in handover. This optimization is obtained by minimizing the system Grade of Service (GoS). Moreover, the algorithm includes a prioritization of business users over consumer users. The obtained results are compared to a reference algorithm and the impact on the most important performance indicators has been analyzed, including the influence of call duration and service bit rate

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An Efficient Integration of GPS and WCDMA Radio Front-Ends

Cited by 12 publications

References 4 publications

A Complex GPS Safety System for Airplanes

A Complex GPS Safety System for Airplanes

An Ultrawideband Metamaterial Absorber and a Parameter Retrieval Method

A Location-Aware Resource Reservation Algorithm with User Class Differentiation in WCDMA

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