Impact of realistic MIMO physical layer on video transmission over mobile Ad Hoc network

Hamidouche, Wassim; Vauzelle, Rodolphe; Olivier, Christian; Pousset, Yannis; Perrine, Clency

doi:10.1109/pimrc.2009.5450260

Cited by 9 publications

(3 citation statements)

References 14 publications

(14 reference statements)

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“…Very often, the modeled signal stength depends only on the distance between neighboring nodes. Or, it is known that obstacles in wave progation environment and ambient flow has an impact on signal strength [8] [9]. Even if these metrics are accurately measured, the approach only anticipate link breakage.…”

Section: Related Workmentioning

confidence: 99%

New approach to improve the robustness of AOMDV protocol

Yélémou

2013

10th International Multi-Conferences on Systems, Signals &Amp; Devices 2013 (SSD13)

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In Mobile Ad hoc Network (MANET) [1] , packet loss rate is high because of frequent changes in the network topology and the lossy nature of radio links. In this context, it is very delicate, for reactive routing protocols, to support multimedia communication. Route request process, as well as route breakage notification, is frequently repeated. This contributes to congestion and degradation of communication quality. To cope with this problem, in difficult transmission contexts, we propose solutions to improve the robustness of on-demand routing approach. The basic idea of our first proposal is to record a reasonable number of paths at intermediate nodes for each route request process. These will be able to locally solve the problems of route breakages. Thus, the source node is rarely solicited to reinitiate route request process. As a second improvement, we propose taking into account links reliability in the route choice. We modify route request process so that reliable paths in terms of Bit Error Rate (BER) are preferred.The effectiveness of the new protocol taking into account these improvements has been tested under realistic conditions and compared to standard Ad hoc On-demand Multipath Distance Vector (AOMDV) [2] and Ad hoc On-demand Distance Vector (AODV) [3] protocols. The results show that we succeeded in improving the performance of standard AOMDV even in difficult conditions such as mobility or Multi-communication.

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Section: Related Workmentioning

confidence: 99%

New approach to improve the robustness of AOMDV protocol

Yélémou

2013

10th International Multi-Conferences on Systems, Signals &Amp; Devices 2013 (SSD13)

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“…In [30] Hamidouche et al study the impact of a realistic physical layer on the H.264/AVC video transmission over ad hoc networks in an urban environment. They also propose an error model which is based on a Bit Error Rate (BER) computation.…”

Section: The Um-crt Frameworkmentioning

confidence: 99%

A Semi-Deterministic Channel Model for VANETs Simulations

Ledy

Boeglen

Poussard

et al. 2012

International Journal of Vehicular Technology

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Today's advanced simulators facilitate thorough studies on Vehicular Ad hoc NETworks (VANETs). However the choice of the physical layer model in such simulators is a crucial issue that impacts the results. A solution to this challenge might be found with a hybrid model. In this paper, we propose a semi-deterministic channel propagation model for VANETs called UM-CRT. It is based on CRT (Communication Ray Tracer) and SCME—UM (Spatial Channel Model Extended—Urban Micro) which are, respectively, a deterministic channel simulator and a statistical channel model. It uses a process which adjusts the statistical model using relevant parameters obtained from the deterministic simulator. To evaluate realistic VANET transmissions, we have integrated our hybrid model in fully compliant 802.11 p and 802.11 n physical layers. This framework is then used with the NS-2 network simulator. Our simulation results show that UM-CRT is adapted for VANETs simulations in urban areas as it gives a good approximation of realistic channel propagation mechanisms while improving significantly simulation time.

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“…Very often, obstacles in the propagation field are not taken into account in the radio propagation model. This leads to biased results due to the fact that environment interactions affect significantly link quality [6] [7].…”

Section: Background and Related Workmentioning

confidence: 99%

Performance comparison of BER-based routing protocols under realistic conditions

Yélémou

Ledy

Hilt

et al. 2011

2011 IEEE 36th Conference on Local Computer Networks

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To face QoS constraints of multimedia applications, many researches focus on improving the standard MANET routing protocols. Nevertheless, only few works relating to the comparison of enhanced heuristics are available. In those literature, the comparison parameters are measured through simulations performed mainly under unrealistic conditions. In this paper, we compare BER-based enhancements of AODV and OLSR when they have to deal with mobility and multicommunication. We point out that link quality, influenced by obstacles in the propagation field, should be taken into account in MANET routing protocols enhancement simulations.Index Terms-Wireless networks, routing algorithm, BERbased, an enhanced NS2.

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Impact of realistic MIMO physical layer on video transmission over mobile Ad Hoc network

Cited by 9 publications

References 14 publications

New approach to improve the robustness of AOMDV protocol

New approach to improve the robustness of AOMDV protocol

A Semi-Deterministic Channel Model for VANETs Simulations

Performance comparison of BER-based routing protocols under realistic conditions

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