Analytical Modeling of Interference in Cellular Fixed Relay Networks

Szyszkowicz, Sebastian S.; Yanıkömeroğlu, Halim; Fituri, E.A.; Periyalwar, S.

doi:10.1109/ccece.2006.277717

Cited by 5 publications

(6 citation statements)

References 6 publications

(22 reference statements)

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“…It would be possible to use direct moment matching of the first two moments of I with those of a lognormal RV, as done in, e.g., [17], [34]. However, the moments of I have complicated integral expressions [1], and moment matching tends to bias the approximation towards the upper tail of the cdf [41].…”

Section: Discussionmentioning

confidence: 99%

“…This can model interferer layouts of any shape, such as those found in literature: circles or rings [1, and references therein], hexagonal or circular cellular layouts [2], [23], [32]- [34], or even detailed densities of urban areas [14], [15], whereas networks of infinite size such considered in [7], [8] are merely mathematical simplifications of finite networks.…”

Section: B System Modelmentioning

confidence: 99%

“…These integrals are well-behaved and can be well approximated by a Riemann sum (trapezoidal rule) with a moderate number of terms. G n and G cor are termed "geometric coefficients", and are an idea borrowed from [33], [34]. It should be noted that this numerical integration is inevitable, due to the infinite variety of possibilities for the expression of the functions g( r) and h( r i , r j ).…”

Section: Cross-moment Matching and Solutionmentioning

confidence: 99%

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A Simple Approximation of the Aggregate Interference From a Cluster of Many Interferers With Correlated Shadowing

Szyszkowicz

Yanıkömeroğlu

2014

IEEE Trans. Wireless Commun.

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Abstract-We examine the statistical distribution of the interference produced by a cluster of many co-channel interferers: e.g., a sensor network, or a city full of active wireless devices and access points. We consider a clustered interferer layout and analyze the interference as experienced at a given point outside (and not immediately near to) the interferer area. We model the propagation paths as experiencing power law attenuation and lognormal correlated shadowing, with pairwise correlations depending on the relative positions of the two interferers. It has already been shown in literature that adding correlation to the shadowing model can give significantly different, and more realistic, results. Our solution is mostly analytical, with only a small amount of numerical integration required. Whereas both simulation and other analytical methods become very computationally demanding as the number of interferers grows, our method's complexity is independent of the number of interferers, and its precision actually improves when their number increases.Index Terms-Sum of lognormals, correlated shadowing, interference analysis.

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Section: Discussionmentioning

confidence: 99%

Section: B System Modelmentioning

confidence: 99%

Section: Cross-moment Matching and Solutionmentioning

confidence: 99%

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A Simple Approximation of the Aggregate Interference From a Cluster of Many Interferers With Correlated Shadowing

Szyszkowicz

Yanıkömeroğlu

2014

IEEE Trans. Wireless Commun.

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“…Thus, it does give not a overall performance of the cellular system, there are differences between the results from the analysis and the simulation. Also, in [8], analysis of the interference distribution in a cellular system with two-hop fixed relay is developed. However, in [8], the interference at the BS and a MS was considered only under the assumption that the interference from other cells are generated only by the MSs transmitting to the BS.…”

Section: Introductionmentioning

confidence: 99%

“…Also, in [8], analysis of the interference distribution in a cellular system with two-hop fixed relay is developed. However, in [8], the interference at the BS and a MS was considered only under the assumption that the interference from other cells are generated only by the MSs transmitting to the BS. However, in order to evaluate the overall performance, the following four links should be analyzed: link between the MSs in the inner region and the BS, link between the MSs in the outer region and the BS, link between the MSs in the outer region and the RS, and link between the RSs and the BS.…”

Section: Introductionmentioning

confidence: 99%

Closed-Form SINR Distributions for OFDMA Cellular System using Fixed Relays

Sang

Byun

Park

et al. 2008

2008 4th International Conference on Wireless Communications, Networking and Mobile Computing

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In this paper, we derived closed-form expressions for the SINR distributions in OFDMA cellular system using fixed relays. First of all, the intercell interference at the BS and the RS are characterized and it is found that the intercell interference power is successfully modeled as the average of it. From the interference power modeling, the pdfs of SINRs for the four uplink cases are analyzed. The analytical results are verified from computer simulations. The analytical results can be applied to evaluate various aspect of OFDMA cellular systems using fixed relays such as the average system capacity, the average system capacity for a specific region, the outage probability for a given QOS and so on.

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