Upper and lower bounds on subcarrier collision for inter-cell interference scheduler in OFDMA-based systems: Voice traffic

Yarkan, Serhan; Teo, Koon Hoo; Arslan, Hüseyin; Zhang, Jinyun; Qaraqe, Khalid

doi:10.1016/j.phycom.2010.05.001

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…Thus, the central coordinator needs to have the access to a RB allocation database maintained for each BS, which may create a large overhead on the system. Therefore, for reducing the overhead, we evaluate inter-cell interference using a RB collision based model [14]. In the collision based model, only LF information of each sector…”

Section: Inter-cell Interferencementioning

confidence: 99%

Energy-Aware Dynamic Sectorization of Base Stations in Multi-Cell OFDMA Networks

Hossain

Munasinghe

Jamalipour

2013

IEEE Wireless Commun. Lett.

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Abstract-In this paper, we propose traffic-sensitive dynamic sectorization of base stations (BSs) for energy savings in OFDMAbased cellular access networks. Under the proposal, following the temporal variation of traffic level, BSs are dynamically reconfigured using fewer sectors. User data rate, service continuity and network coverage are also maintained. A generalized energy saving optimization problem is formulated, which is a challenging combinatorial problem. Therefore, a low complexity greedy style heuristic algorithm is presented. Effectiveness of the scheme is demonstrated using Monte Carlo simulations and compared with the popular BS on/off based energy saving technique.

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Section: Inter-cell Interferencementioning

confidence: 99%

Energy-Aware Dynamic Sectorization of Base Stations in Multi-Cell OFDMA Networks

Hossain

Munasinghe

Jamalipour

2013

IEEE Wireless Commun. Lett.

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“…Therefore convex or non-convex optimization methods and algorithms have become promising tools in the CA methods. Nevertheless, different scheduling algorithms for different types of channel traffics such as voice [2], and internet [3], and employment of game theory methods in CA schemes have been proposed for cognitive radio (CR) wireless networks [4]. Thus, in this study, some statistics of sub-carrier collision for orthogonal frequency division multiple access (OFDMA)-based NGWNs are analyzed based on two-cell FRO model so that the analysis can be extended to many-cell FRO model.…”

Section: Introductionmentioning

confidence: 99%

“…However, when inter-cell interference (ICI) is considered the average number of sub-carrier collision is more appropriate for performance measure because of importance of sub-carriers' scheduling. For example, when the two cells are considered the probability of mass function (PMF) of the number of collision is given by hyper-geometric distribution [2];…”

Section: Introductionmentioning

confidence: 99%

On the statistics of sub-carrier collisions for cell-edge users and air interface capacity in OFDMA systems

Ekin

Yarkan

Qaraqe

et al. 2011

ISSCS 2011 - International Symposium on Signals, Circuits and Systems

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In next generation wireless networks (NGWNs), interference is one of the most important considerations in terms of system design, deployment, and performance. Given the ability to use the spectrum in finer granularity such as in orthogonal frequency division multiple access (OFDMA) systems, scheduling seems to be one of the most important functionalities of NGWNs. Therefore, in this study, sub-carrier collisions for especially cell-edge users are investigated along with their impact on air interface capacity for OFDMA-based systems. It is shown that sub-carrier collisions follow hypergeometric distribution with different statistical characteristics. In addition, the air interface capacity of OFDMA systems with the availability of interference is studied as well. Numerical results are presented to verify the theoretical analysis and investigate the impacts of different parameters on both sub-carrier collisions and the air interface capacity.

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On the statistics of uplink inter-cell interference with greedy resource allocation

Tabassum

Yılmaz

Dawy

et al. 2011

2011 8th International Symposium on Wireless Communication Systems

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Upper and lower bounds on subcarrier collision for inter-cell interference scheduler in OFDMA-based systems: Voice traffic

Cited by 3 publications

References 12 publications

Energy-Aware Dynamic Sectorization of Base Stations in Multi-Cell OFDMA Networks

Energy-Aware Dynamic Sectorization of Base Stations in Multi-Cell OFDMA Networks

On the statistics of sub-carrier collisions for cell-edge users and air interface capacity in OFDMA systems

On the statistics of uplink inter-cell interference with greedy resource allocation

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