Resource-Allocation for OFDMA Multi-Hop Relaying Downlink Systems

Kwak, R.; Cioffi, J.M.

doi:10.1109/glocom.2007.611

Cited by 60 publications

(31 citation statements)

References 8 publications

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“…To avoid a difficult non-convex optimization problem, [44] formulates a convex problem in a downlink single-cell scenario by using preassigned subchannels and optimizing only the power allocation. Thereafter, a heuristic scheme for subchannel-allocation using Lagrange dual-decomposition method is adopted.…”

Section: A Centralized Rrm In Single-cell Ofdma Relay Networkmentioning

confidence: 99%

“…Still, to remedy the difficult non-convex problem formulated in [44], the authors use preassigned subchannels and optimizes only for power allocation to obtain a convex problem. Thereafter, a heuristic scheme for subchannel allocation as a byproduct of applying Lagrange dual-decomposition method is adopted.…”

Section: Optimization Techniques and Complexity Issuesmentioning

confidence: 99%

“…The dynamic fading across frequency and time provides the opportunity to use the channel when it is most favorable for transmission. Despite this opportunity, some of the works in the literature rely only on the frequency diversity, and assume time-invariant channels with little or no mobility [17], [44]. However, in the single-cell relay networks in [40] and [47], time-frequencycorrelated Rayleigh fading channels, with exponential powerdelay profile for WS links using Jake's model, are used.…”

Section: A Simulated Channelsmentioning

confidence: 99%

See 2 more Smart Citations

An Overview of Radio Resource Management in Relay-Enhanced OFDMA-Based Networks

Salem

Adinoyi²,

Rahman

et al. 2010

IEEE Commun. Surv. Tutorials

151

115

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Although a number of publications have highlighted the important and challenging issues involved in designing RRM algorithms for OFDMA networks, only recently a number of papers have investigated relay-enhanced OFDMA-based multicellular networks. By and large, the literature indicates that these issues constitute a hot research topic that will continue to attract interest. This paper provides a survey of the current literature on OFDMA networks enhanced with decode-and-forward relaying and provides their link to earlier literature in non-OFDMA networks. In addition, a rich list of references is provided to direct the readers toward some of the emerging techniques.

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Section: A Centralized Rrm In Single-cell Ofdma Relay Networkmentioning

confidence: 99%

Section: Optimization Techniques and Complexity Issuesmentioning

confidence: 99%

Section: A Simulated Channelsmentioning

confidence: 99%

See 1 more Smart Citation

An Overview of Radio Resource Management in Relay-Enhanced OFDMA-Based Networks

Salem

Adinoyi²,

Rahman

et al. 2010

IEEE Commun. Surv. Tutorials

151

115

View full text Add to dashboard Cite

show abstract

“…Optimal resource allocation is a critical issue in relay-assisted OFDMA systems. The authors in [3][4] analyzed the subcarrier-to-relay assignment problem in multi-relay orthogonal frequency-division multiplexing (OFDM) systems with single users, whereas those in [5] considered multiple users. Power allocation with total and individual power constraints was considered for the OFDM DF relaying systems in [6] but multiple users were not studied.…”

Section: Introductionmentioning

confidence: 99%

Relay Selection Fairness and Resource Allocation for OFDMA Networks

Huang¹,

Wang²,

Yang³

2015

IJMUE

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“…The subcarrier and power allocation scheme that can guarantee load fairness among relays is given in [8]. In [9] and [10] resource allocation algorithms are proposed to maximize the sum rate in OFDMA multihop relaying downlink single-cell scenario. A fair traffic-awareness resource allocation scheme that can significantly reduce the co-channel interference and improve spectrum utilization in OFDMA-based multicellular networks enhanced by fixed relays is presented in [11] and [12].…”

Section: Introductionmentioning

confidence: 99%

Radio Resource Management for OFDMA-Based Mobile Relay Enhanced Heterogenous Cellular Networks

Baştürk

Özbek

Edemen

et al. 2013

2013 IEEE 77th Vehicular Technology Conference (VTC Spring)

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Abstract-In this paper, we focus on the radio resource management problem for the Orthogonal Frequency Division Multiple Access (OFDMA)-based mobile relay-enhanced heterogenous cellular networks. We combine mobile relaying and data offloading scenarios to increase the capacity of the system and cope with the mobile data traffic volume that is increased by the number of wireless subscribers accessing mobile data services. We propose network interface selection, relay selection and resource allocation solutions for this scenario and show effect of relaying and data offloading on the system capacity and on the ratio of satisfied users.

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Resource-Allocation for OFDMA Multi-Hop Relaying Downlink Systems

Cited by 60 publications

References 8 publications

An Overview of Radio Resource Management in Relay-Enhanced OFDMA-Based Networks

An Overview of Radio Resource Management in Relay-Enhanced OFDMA-Based Networks

Relay Selection Fairness and Resource Allocation for OFDMA Networks

Radio Resource Management for OFDMA-Based Mobile Relay Enhanced Heterogenous Cellular Networks

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