Routing impact in highly dynamic mesh networks of RF and FSO links

Sonnenberg, Jerome; Oyler, Michael; Peach, R.C.; Burdge, Geoffrey L.

doi:10.1109/milcom.2009.5379765

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…However, FSO communication systems are vulnerable to weather effects and atmospheric turbulence as well as pointing errors. As a result, adaptation methods and transmission protocols are being actively discussed [11–13]. For many scenarios such as real‐time transmission and broadcasting, retransmission is either expensive or impossible to implement, so using forward error correction (FEC) is promising and has been widely studied [14–16].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of packet layer FEC codes and interleaving in FSO channels

et al. 2017

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The combination of forward-error-correction (FEC) and interleaving can be used to improve free-space optical (FSO) communication systems. Recent research has optimized the codeword length and interleaving depth under the assumption of a fixed buffering size, however, how the buffering size influences the system performance remains unsolved. This paper models the system performance as a function of buffering size and FEC recovery threshold, which allows system designers to determine optimum parameters in consideration of the overhead. The modelling is based on statistics of temporal features of correct data reception and burst error length through the measurement of the channel good time and outage time. The experimental results show good coherence with the theoretical values. This method can also be applied in other channels if a Continuous-Time-Markov-Chain (CTMC) model of the channel can be derived.

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Section: Introductionmentioning

confidence: 99%

Performance analysis of packet layer FEC codes and interleaving in FSO channels

et al. 2017

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“…Also look at the density of nodes in the network and its implications on throughput [7]. In 2009, Jerome Sonnenberg and Michael Oyler showed the data and packet rates provided by the optical link within the hybrid mesh network over a period of 70 seconds for varying levels of scintillation index [14]. In our research work, we have designed two different clusters of RF based MANETs and connect both network by using two FSO nodes, which are also a part of an individual RF based MANET.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the effectiveness of cluster based H-MANET for scaling number of nodes

Patel

Dubey

2015

2015 International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS)

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The hybrid mobile ad hoc network (H-MANET) consist of self organized mobile nodes connected over radio frequency (RF) and free space optics (FSO) based wireless links. Due to limited transmission range of RF based network, the communication between two RF based MANETs are carried out by using FSO link. We have design two different clusters of RF based MANETs. Both clusters are connected by two FSO nodes, which are also a part of an individual RF based network. In our research work, we have analyze the performance of H-MANET in terms of throughput for different network areas (1000m× 1000m, 2000m × 2000m and 3000m× 3000m) and scaling number of nodes up to 200. We have used the same protocol combinations (AODV-AODV, AOMDV-AOMDV, DSDV-DSDV and OLSR-OLSR) for two different RF based networks and joint together by FSO link for analyzing the effectiveness of H-MANET. The simulation experiment is carried out by using network simulator tool (NS 2.35) and data analysis with graphical representation has been done by using MATLAB (R) .

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“…In [46], the authors show some preliminary results characterizing hybrid FSO/RF links in WMN for routing. A Bayesian-based game-theoretic model is used to guarantee cooperativeness in hybrid FSO/RF networks in [47].…”

Section: Literature Reviewmentioning

confidence: 99%

Hybrid Free Space Optical and RF Wireless Communication

Tang¹

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Hybrid free space optical/radio frequency (FSO/RF) technology has recently been proposed as a means of significantly increasing the throughput and reliability of wireless broadband communications. The motivation is to use parallel noninterfering communication channels to combat channel impairments. In order to implement and fully exploit hybrid FSO/RF technology, both point-to-point (P2P) communication system and network models need to be studied. We develop physical-layer and network-layer models of hybrid FSO/RF networks. We address two topics: hybrid FSO/RF P2P systems and hybrid FSO/RF wireless mesh networks (WMN). Theoretical analyses are presented. In addition, we present practical implementations with performance that approaches the theoretical system performance derived. Numerical and simulation results are provided to show the advantages of hybrid FSO/RF systems. For P2P communications, we model the hybrid FSO/RF system as an independent parallel channel system. We develop an information-theoretic analysis of the parallel channel model and implement an adaptive design resulting in a capacity-approaching and seamless joint system. Results show that this jointly optimized FSO/RF link significantly outperforms simple RF or FSO links. In our research on hybrid FSO/RF WMN, we study both centralized and distributed routing algorithms. For centralized routing, we present network control algorithms based on both non-fading and fading communication channels using a physical interference model for the RF portion of the network. We study the throughput improvement achievable by augmenting the RF WMN with FSO links. In our distributed routing study, a hierarchical routing algorithm is developed for the hybrid FSO/RF network. The algorithm is optimized for the hybrid network so that the advantages of high-throughput FSO links and the reliability of RF links are highlighted. iii I gratefully appreciate the National Science Foundation for funding this research (under grant number ECCS-0636598). Finally, I want to thank to my wife and parents for their support. Without their help, this dissertation would not have been possible.

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Routing impact in highly dynamic mesh networks of RF and FSO links

Cited by 3 publications

References 7 publications

Performance analysis of packet layer FEC codes and interleaving in FSO channels

Performance analysis of packet layer FEC codes and interleaving in FSO channels

Analyzing the effectiveness of cluster based H-MANET for scaling number of nodes

Hybrid Free Space Optical and RF Wireless Communication

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