Multihop Relaying for Broadband Wireless Mesh Networks: From Theory to Practice

Oyman, Özgür; Laneman, N.J.; Sandhu, Sumeet

doi:10.1109/mcom.2007.4378330

Cited by 171 publications

(83 citation statements)

References 12 publications

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“…The total transmission rate over hop n is denoted as r n = k∈K r k,n . The end-to-end transmission rate is defined as the minimum of transmission rates over the N hops, as in [5] and [6]. Mathematically, r = min n∈N r n .…”

Section: System Model and Problem Formulationmentioning

confidence: 99%

“…At the beginning of each frame, it needs to determine the transmission parameters including the transmission power on each subcarrier over each hop and the transmission time over each hop. Previous work on resource allocation for relay networks is found in [2]- [5]. Yao et al in [2] consider a system with a source node, a destination node, and a single relay and compare the energy required for transmitting one information bit in different relay schemes.…”

Section: Introductionmentioning

confidence: 99%

“…It is assumed in [2]- [4] that the point-to-point links are frequency-flat fading channels and the system has a fixed short-term power constraint. In [5], Oyman et al introduce two different transmission strategies over multiple hops, and show merits of multi-hop relaying in cellular mesh networks. Based on the framework proposed in [5] and [6], the authors in [7] studied the resource allocation problem in an OFDM based multi-hop network to maximize the end-to-end average transmission rate under a long-term total power constraint.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

End-to-End Outage Probability Minimization in OFDM Based Linear Multi-Hop Networks

Zhang

Tao

Jiao³

et al. 2008

2008 IEEE International Conference on Communications

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Abstract-This paper is concerned with the end-to-end transmission outage in an OFDM based wireless multi-hop network. The network consists of a source node, a destination node, and a set of serial relay nodes. Transmission outage occurs when the end-to-end transmission rate is less than a target rate. Our goal is to find an optimal power and time control policy to minimize the outage probability at a target end-to-end data rate under a long-term total power constraint. The problem is solved in two steps. First, for any given channel realization, we derive the minimum total power required to meet the target rate by varying the transmission power and time allocated to each hop. This is formulated as a convex optimization problem and is solved efficiently. We then compare the required minimum total power for each channel realization with a power threshold. If the threshold is exceeded, the transmission is turned off. The optimal threshold is chosen to meet the long-term total power constraint. Two suboptimal power and time control policies are also presented and compared with the optimal policy by simulation.

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Section: System Model and Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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End-to-End Outage Probability Minimization in OFDM Based Linear Multi-Hop Networks

Zhang

Tao

Jiao³

et al. 2008

2008 IEEE International Conference on Communications

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“…In relay communications, intermediate nodes are used which relay the data to/from the base station (BS) [1]. There are two different types of relays, namely, fixed and mobile relays [2].…”

Section: Introductionmentioning

confidence: 99%

Spectral efficiency analysis of mobile Femtocell based cellular systems

Haider

Wang

Haas

et al. 2011

2011 IEEE 13th International Conference on Communication Technology

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Abstract-In this paper, we propose a new concept called mobile Femtocell (MFemtocell) network, which can be considered as a practical implementation of mobile relays (more precisely, moving networks). MFemtocells can be deployed in moving vehicles, such as trains, buses, or private cars to provide enhanced user throughput, extended coverage, and reduction of the signaling overhead and drop calls. We investigate the spectral efficiency of cellular systems with MFemtocell deployment and two resource partitioning schemes. Simulation results demonstrate that with the deployment of MFemtocells, the spectral efficiency and average user throughput can significantly be increased while the signaling overhead is reduced.

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“…The relay-assisted OFDMA cellular system is a promising architecture for future wireless communication systems because it offers huge potential for enhanced system capacity, coverage as well as reliability [1], [2]. Full-duplex relay stations were discussed in the early literature.…”

Section: Introductionmentioning

confidence: 99%

Distributive subband allocation, power and rate control for relay-assisted OFDMA cellular system with imperfect system state knowledge

Cui

Lau

Wang

2009

IEEE Trans. Wireless Commun.

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Abstract-In this paper, we consider distributive subband, power and rate allocation for a two-hop transmission in an orthogonal frequency-division multiple-access (OFDMA) cellular system with fixed relays which operate in decode-and-forward strategy. We take into account of system fairness by considering weighted sum goodput as our optimization objective. Based on the cluster-based architecture, we obtain a fast-converging distributive solution with only local imperfect CSIT by using decomposition of the optimization problem. To further reduce the signaling overhead and computational complexity, we propose a reduced feedback distributive solution, which can achieve asymptotically optimal performance for large number of users with arbitrarily small feedback overhead per user. We also derive asymptotic average system throughput for the relay-assisted OFDMA system so as to obtain useful design insights.

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Multihop Relaying for Broadband Wireless Mesh Networks: From Theory to Practice

Cited by 171 publications

References 12 publications

End-to-End Outage Probability Minimization in OFDM Based Linear Multi-Hop Networks

End-to-End Outage Probability Minimization in OFDM Based Linear Multi-Hop Networks

Spectral efficiency analysis of mobile Femtocell based cellular systems

Distributive subband allocation, power and rate control for relay-assisted OFDMA cellular system with imperfect system state knowledge

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