نتایج جستجو برای: lte

تعداد نتایج: 5962  

2017
Ibrahim Umar Muhammad Waheed G. K. Venkatesan K. Kulkarni C. C. Y. Yang M. Ketcham D. Lu D. P. Venmani D. Zeghlache D. Chieng K. H. Kwong I. Andonovic K. D. Wong

Designing of backhaul media is one of the most challenging task in implementation LTE 4G networks. Traditionally microwave/DRS of STM-1 links were used to implement LTE network. However, due to low microwave efficiency targeted bandwidth requirements of LTE were hard to achieve. Also, operators in developing countries tend to go for cost-effective solution due to lower purchase power of the peo...

2014
Hao Chen Ying Liu Jianfu Teng

To increase LTE (long time evolution) networks spectrum utilization and interference itigation, a LTE system overlaid with femtocells is studied. This paper will focus a self-optimized power control scheme for LTE-femtocell networks, in which the transmitted power of a femtocell base station is adjusted based on the optimal SINR threshold. It is known that game theory is a useful tool for analy...

2009

(LTE) present a number of design and verification challenges for system engineers. Some examples include determining design requirements and specifications for new hardware designs, evaluating hardware re-use, and testing RF/mixed-signal designs and hardware independently of baseband hardware. Electronic Design Automation (EDA) simulation tools can help address these challenges by enabling syst...

2014
M. A. Mohamed

Long Term Evolution is the last step towards the 4th generation of cellular networks. This revolution is necessitated by the unceasing increase in demand for high speed connection on LTE networks. This paper mainly focuses on performance evaluation of LTE physical layer to study and analysis the effect of transmitting and receiving data over noisy channels and how to resist loss in data by this...

2013
Safdar Nawaz Khan Marwat Yasir Zaki Jay Chen Andreas Timm-Giel Carmelita Görg

In Long Term Evolution Advanced (LTE-A) several new features have been added to deal with the ever-increasing demands for higher data rates and spectral efficiency. One of the key features that the Third Generation Partnership Project (3GPP) has introduced is the Relay Node (RN), a low power low cost device used to increase the spectral efficiency, especially at the cell edge. In this paper, we...

Journal: :CoRR 2017
Alessandro Guidotti Alessandro Vanelli-Coralli Tommaso Foggi Giulio Colavolpe M. Caus J. Bas Stefano Cioni Andrea Modenini

The integration of satellite and terrestrial networks is a promising solution for extending broadband coverage to areas not connected to a terrestrial infrastructure, as also demonstrated by recent commercial and standardisation endeavours. However, the large delays and Doppler shifts over the satellite channel pose severe technical challenges to traditional terrestrial systems, as LTE or 5G. I...

2016
Chia-Yu Chang Konstantinos Alexandris Navid Nikaein Thrasyvoulos Spyropoulos

Lower-latency services are expected toward beyond 4G mobile networks; however, legacy 3G and 4G networks are now suffering from the mobile data surge. In this sense, pushing network services to the network edge has the potential to improve the traffic latency and user experience, as well as to offload Internet traffic. The network functions can be dynamically reassigned between edge and core no...

2016
S. Singh N. Saxena A. Roy

ELECT Out of total mobile data traffic, mobile video traffic accounts for 55%. Massive increase in mobile video traffic trend and simultaneous proliferation in smart devices strains the expanding cellular network that triggers the demand to retain the quality of video. To fortify this challenge, proximity-based video delivery architectures are put forward. Four novel architectures are proposed ...

2014
Ketyllen da Costa Silva Carlos P. Alves da Silva Nandamudi L. Vijaykumar

One of the key elements in LTE (Long Term Evolution) networks is deployment of multiple femtocells for improvement coverage and data rate. However, arbitrary overlapping coverage of these cells makes the HO (handover) mechanism complex and challenging. In this paper, simulations of deploying LTE femtocells in a scenario were evaluated. With this objective, measure impact and correlation of the ...

2016
Sundar Daniel V. Peethala Theo Kreul Thomas Kaiser

Distributed Antenna Systems (DAS) promise to deliver solutions for the future wireless challenges using multiple remote radio heads (RRHs) in a distributed architecture, thereby supporting high frequency re-use, increased coverage, decreasing interference and latency. DAS architecture consists of multiple RRHs connected to a centralized base station via an optical fiber network. This work expla...

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