نتایج جستجو برای: radio and tv networks

تعداد نتایج: 16922542  

Babak Vaziri, Reza Ravanmehr, Shiva Zendehdelan

Wireless mesh networks (WMNs) which mediates the broadband Internet access, have been recently received many attentions by the researchers. In order to increase capacity in these networks, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi-channel WMNs (MRMC WMNs). Therefore, a vital challenge that poses in MRMC WMNs is how to properly assign channels ...

2005
Katsutoshi Tsukamoto

Software Definable Radio Networks (SDRN) is proposed to realize a universal platform for various types of wireless services under the multi air interferences coexistence in ubiquitous networks. The SDRN is configured with universal radio base stations, radio on fiber networks, and software definable radio gateway that connects to global IP networks. This paper describes the concept of the SDRN,...

2011
Yibin Ye Stefano Squartini Francesco Piazza

Time-Varying Neural Networks(TV-NN) represent a powerful tool for nonstationary systems identification tasks, as shown in some recent works of the authors. Extreme Learning Machine approach can train TV-NNs efficiently: the reference algorithm is named ELM-TV and is of batch-learning type. In this paper, we generalize an online sequential version of ELM to TV-NN and evaluate its performances in...

2015
Delphine Charlet Géraldine Damnati Jérémy Trione

Modern TV or radio news talk-shows include a variety of sequences which comply with specific journalistic patterns, including debates, interviews, reports. The paper deals with automatic chapter generation for TV news talk-shows, according to these different journalistic genres. It is shown that linguistic and speaker-distribution based features can lead to an efficient characterization of thes...

Journal: :the modares journal of electrical engineering 2009
keivan navaie

it is shown in [1] that the optimal downlink radio resource allocation for non-realtime traffic in cellular cdma/tdma networks can be mapped to a multi-dimensional multiple-choice knapsack problem (mmkp) which is np-hard. in this correspondence we propose a heuristic algorithm with polynomial time complexity for this problem. numerical results indicate significant computational performance impr...

2011

In this paper, we present our P2P-TV measurement experiment performed in France and in Japan. By using multiple measurement points in different locations of the world, we are able to get a global view of the measured P2P networks and we can infer their main properties. More precisely, we focus on the location of peers and the effect of the P2P-TV traffic on the networks. Our results shows that ...

2015
Arslan Rasheed Haad Akmal Mahmood Ashraf Khan Izhar ul Haq Mustafa Shakir

The spectrum utilization is a function of time and location. Hence, at different times and locations the utilization of spectrum might be different. The TV band 52-862 MHz has been the most crucial frequency band in Pakistan that remains unoccupied most of the time. The unoccupied frequency chunks in the TV band are termed as TV White Spaces (TVWS). In this paper, energy detection technique for...

شفیعی راد, محسن, شفیعی, مسعود ,

Abstract Ad hoc Wireless Networks, are networks formed by a collection of nodes through radio. In wireless networking environment, formidable challenges are presented. One important challenge is connection maintenance mechanism for power consumption. In this paper, a multi-objective optimal design is considered for ad-hoc networks which address the electrical power of nodes effects on cross-l...

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