نتایج جستجو برای: base stations

تعداد نتایج: 286246  

2011
Ramanpreet Singh Sukhwinder Singh

This paper considers the problem of detecting rogue base station in WiMAX/802.16 networks. A rogue base station is an attacker station that duplicates a legitimate base station. The rogue base station puzzles a set of subscribers who try to get service which they believe to be a legitimate base station. It may lead to disturbance in service. The strategy of attack depends on the type of network...

2000
Ricardo C. Rodrigues Geraldo Robson Mateus Antonio Alfredo Ferreira Loureiro

The design of a wireless local area network (WLAN) has two major issues: determining the best placement of base stations (BS) and assigning the frequency channels for those stations. The correct BS placement minimizes installation costs. The adequate channel assignment reduces signal interference and improve network throughput. This paper reports a real experience where we applied the concepts ...

2014
Dinh Luyen NGUYEN Thi Lan Huong NGUYEN

Currently, optimal use of power in base transceiver stations (BTSs) with preserving quality of services is a critical problem. One possible approach to this issue is to use renewable energy resources like solar-wind energy. This paper presents a solution which applies ADE7753 in power surpervision of green base stations in cellular networks. The proposed system will allow to supervise hybrid po...

2009
Stephanie Overhoff

Today’s communication systems make strong demands on both receiver sensitivity and large-signal performance (dynamic range). When selecting components for a new design, therefore, it behooves the designer to focus on the performance of each one with regard to these requirements. In particular, this article deals with mixers and the basic parameters specified in their data sheets. The communicat...

1999
Juan José Murillo-Fuentes Francisco Javier González-Serrano

Predistortion in GSM has been introduced to deal with saturation in amplification at Base Transceiver Stations (BTS). This paper will focus on the elements and architectures in signal predistortion for one carrier and multicarrier modulations. The GCMAC neural network has been introduced as predistorter to provide the design with adaptive, digital and practical features. Some results are includ...

2012
Yoji Okada Takashi YaMaMOTO Yoshihiro haMada Yoshizo Tanaka

Mobile service providers in recent years have been facing rapid increases in data traffic, so have much interest in small cell base stations such as picocells and femtocells. However, these small cell base stations are recognized as potential causes of inter-cell interference, since it is highly probable that they will be deployed using the same radio frequency as used by macrocells, due to the...

Journal: :EURASIP J. Wireless Comm. and Networking 2007
Simon Plass Ronald Raulefs Armin Dammann

We address the problems at the most critical area in a cellular multicarrier code division multiple access (MC-CDMA) network, namely, the cell border. At a mobile terminal the diversity can be increased by using transmit diversity techniques such as cyclic delay diversity (CDD) and space-time coding like Alamouti. We transfer these transmit diversity techniques to a cellular environment. Theref...

2014
Naoto Miyoshi Tomoyuki Shirai T. Shirai

We consider a cellular network model with base stations configurated according to the α-Ginibre point process with α ∈ (0, 1], which is one of the determinantal point processes. In this model, we focus on the asymptotic behavior of the so-called coverage probability (or link success probability) as the threshold value tends to 0 and ∞, and discuss the Padé approximation of the coverage probabil...

2004
Jack Rosa

HYPRES Superconducting MicroElectronics (SME) Technology provides unparalleled performance improvements in the digital domain allowing, for the first time, the direct digital conversion of RF signals while enabling the use of advanced ultra-high speed digital signal processing techniques. SME makes it possible to take the receive (or transmit) signal directly at the output of the base station a...

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