نتایج جستجو برای: multi radio multi channel

تعداد نتایج: 754022  

2009
Janghwan Lee Ikjun Yeom

We propose a fair bandwidth allocation scheme for multi-radio multi-channel Wireless Mesh Networks (WMNs) using distributed algorithm. Through an extensive simulation, we show that our scheme ensures per node fairness without loss of the total aggregate throughput.

Journal: :IEICE Transactions 2013
Hidekazu Murata Susumu Yoshida Koji Yamamoto Daisuke Umehara Satoshi Denno Masahiro Morikura

The present paper introduces a prototype design and experimental results for a multi-user MIMO linear precoding system. A base station and two mobile stations are implemented by taking full advantage of the software-defined radio. The base station consists of general purpose signal analyzers and signal generators controlled by a personal computer. Universal software radio peripherals are used a...

2015
Yue Liu David Bild Robert P. Dick

Although wireless channel comparison based techniques have been shown to defeat Sybil attacks in wireless environments, most assume single-input single-output (SISO) models for the radio system. We consider extending wireless Sybil defenses to multi-input multi-output (MIMO)

Journal: :IEICE Electronic Express 2005
Rintaro Katayama Katsutoshi Tsukamoto Shozo Komaki

This letter newly proposes a new multi-user detection scheme for multiple users using co-channel heterogeneous radio signals in ubiquitous antenna system. The ubiquitous antenna system is composed of multiple radio base stations (RBSs), the central control station (CCS) which performs the multi-user detection, and radio-on-fiber (RoF) link which connects the RBSs to the CCS. Computer simulation...

2009
P. F. Morlat X. Gallon G. Villemaud J. M. Gorce

SIMO algorithms ensure important increasing of radio communications robustness, but their performances strongly depend on channel propagations conditions and antenna characteristics. This article presents performances of different SIMO treatments applied on WLAN (802.11b and 802.11g) transmissions in a multi-standard and multi-channel context. These performances are obtained by measure, under d...

Journal: :CoRR 2009
Mubashir Husain Rehmani Aline Carneiro Viana Hicham Khalife Serge Fdida

This paper introduces a new channel selection strategy for reliable contentionaware data dissemination in multi-hop cognitive radio network. The key challenge here is to select channels providing a good tradeoff between connectivity and contention. In other words, channels with good opportunities for communication due to (1) low primary radio nodes (PRs) activities, and (2) limited contention o...

Journal: :Pervasive and Mobile Computing 2014
Ali J. Ghandour Marco Di Felice Hassan Artail Luciano Bononi

Multi-channel IEEE WAVE 1609.4 protocol has been proposed to guarantee the co-existence of safety and non-safety applications over the same Vehicular Ad hoc NETwok (VANET) scenario. While the usage of multi-channel avoids the risk of collisions between applications allocated on different frequencies, its implementation on a single-radio transceiver poses some major concerns about the effective ...

Journal: :CoRR 2013
Ziaeddin Beheshtifard Mohammad Reza Meybodi

In this paper, we look into the problem of channel assignment in multi-channel multi-radio wireless mesh networks. We propose a new learning automata based channel assignment scheme that adaptively improve network overall throughput by expecting channel state. Since the ability of sending packets via upstream links will be evaluation bases for assigning channels to radio interfaces on each node...

Journal: :International Journal of Electrical and Computer Engineering (IJECE) 2020

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