نتایج جستجو برای: cellular radio system

تعداد نتایج: 2660565  

1999
Theodore S. Rappaport Robert A. Brickhouse

Indoor parasitic cellular systems reuse the same frequencies as outdoor cellular (macrocellular) systems to provide wireless communications inside a building or campus. This paper provides a simulation strategy to determine future channel availability that is possible between in-building and outdoor cellular systems that share the same radio spectrum. Capacity that is currently available inside...

2015
Kethini Rupesh Bharath Simha Reddy

Future cellular communication systems will be designed to support a wide ranges of data rates, high data coverage, larger capacity and challenging throughput with a complex quality of service matrix. It is becoming more challenging to optimize the radio resource management and maximize the system capacity by meeting the required quality of service from user’s point of view. This paper addresses...

Journal: :international journal of industrial engineering and productional research- 0
s moslehpour k jenab education chair, society of reliability engineering-ottawa, canada n. namburi

radio frequency identification (rfid) is used to identify the characteristics of an object wirelessly using radio waves. the purpose of this technology in this study is mainly focused on healthcare for inventory management and theft control replacing the manual logs. the storage and tracking of high-cost inventory items is developed. automatic reordering and billing interfaces are designed for ...

Journal: :IEEE Access 2022

We determine the cost of serving Ultra-Reliable Low-Latency Communications (URLLC) traffic (1 ms one-way latency, 99.999% reliability) in 5G New Radio (NR) Macro cellular networks. The is measured as degradation enhanced Mobile Broadband (eMBB) downlink system capacity when a certain offered load URLLC on same radio carrier. A methodology for assessing presented, which takes into account all as...

Journal: Nanomedicine Journal 2018

Objective(s): Taking advantage of high atomic number of gold nanoparticles (GNPs) in radiation dose absorbing, many in vitro and in vivo studies have been carried out on using them as radio-sensitizer. In spite of noticeable dose enhancement by GNPs at keV energies, using this energy range for radiotherapy of deep-seated tumors is outdated. The aim of the present work was to examine the effect ...

The prevalent communications networks suffer from lack of spectrum and spectrum inefficiency. This has motivated researchers to develop cognitive radio (CR) as a smart and dynamic radio access promised solution. A major challenge to this new technology is how to make fair assignment of available spectrum to unlicensed users, particularly for smart grids communication. This paper introduces an i...

2009
Erik Östlin

To support the continuously increasing number of mobile telephone users around the world, mobile communication systems have become more advanced and sophisticated in their designs. As a result of the great success with the second generation mobile radio networks, deployment of the third and development of fourth generations, the demand for higher data rates to support available services, such a...

1994
Michele Zorzi Laurence B. Milstein

In this paper, the base-to-mobile link in a cellular CDMA mobile radio system, in the presence of Rayleigh fading, is considered, and an analytical approach is developed which enables us to nd the optimal form of the power control law and to evaluate its performance in terms of the system utilization, i.e., the ratio of the number of admitted users to the spreading factor per information bit. T...

1999
Li-Chun Wang Gordon L. Stüber Chin-Tau Lea

In a macrodiversity cellular system, switching radio links between base stations cannot be done instantaneously. Thus, branch selection is usually based on the measurement of the slowly varying local-mean power rather than the rapidly varying instantaneous signal power. In this paper, we offer an exact mathematical model to analyze the performance of a local-mean-based macrodiversity cellular s...

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