Efficient Simulation using Shadowing Fields of Many Wireless Interferers with Correlated Shadowing

Szyszkowicz, Sebastian S.; Alaca, Furkan; Yanıkömeroğlu, Halim; Thompson, John

doi:10.1109/vetecs.2010.5493734

Cited by 5 publications

(7 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This spatial correlation of shadowing among proximate wireless links has been frequently observed in cellular systems [2] [3], satellite systems [4] and wireless multi-hop networks (WMHNs) [5]. Previous work shows that shadowing correlation significantly affects handover behavior [6], interference power [7], the performance of macrodiversity schemes [8], network connectivity [9] and redundant node deployment [10]. Although several models for correlated shadowing already exist, these models are not present in popular network simulators such as ns-3 [11] and QualNet [12].…”

Section: Introductionmentioning

confidence: 91%

Effects of Correlated Shadowing Modeling on Performance Evaluation of Wireless Sensor Networks

Lu¹,

May

Haines³

2015

2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall)

View full text Add to dashboard Cite

Abstract-Wireless links are typically modeled in isolation as independent and parallel links. However, in reality, there is often a correlation in defects and impairments between collocated links. The spatial correlation of shadowing among proximate wireless links has been frequently observed. Although different types of correlated shadowing models have been proposed for wireless channels, these models are not present in popular network simulators. Ignoring such correlations results in the diversity of adjacent links being over-estimated. Our hypothesis is that this could lead to incorrect results when evaluating the performance of wireless systems and network protocols. In this paper, the ns-3 simulation environment has been enhanced with a prototype correlated shadowing model developed in our previously published work. We study the end-to-end packet delivery ratio and delay in wireless sensor networks using both correlated and independent propagation models. Simulation results show that correlated and independent shadowing models produce significant differences in network performance. Moreover, we compare the complexity of different modeling options. It is shown that this correlated propagation model in ns-3 can improve simulation realism without inducing any considerable degradation of scalability.

show abstract

Section: Introductionmentioning

confidence: 91%

Effects of Correlated Shadowing Modeling on Performance Evaluation of Wireless Sensor Networks

Lu¹,

May

Haines³

2015

2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall)

View full text Add to dashboard Cite

show abstract

“…Older works show that shadowing correlation significantly affects handover behavior [6]- [9], interference power [10]- [14] (and consequently system performance) [15]- [17], and the performance of macrodiversity schemes [10], [18]- [23]. Furthermore, shadowing in decibels has been measured [18], [24]- [39] to have significant correlation in various scenarios.…”

Section: A Motivationmentioning

confidence: 99%

“…The model is non-psd, as observed in [45,46,57]; for example: N = 6 with r i = r ∀i and ∠ r i = 0, 7,14,21,28,35 • . Another model is given in [22], i.e., VII.…”

Section: E More Elaborate (Nonseparable) Modelsmentioning

confidence: 99%

On the Feasibility of Wireless Shadowing Correlation Models

Szyszkowicz

Yanıkömeroğlu

Thompson

2010

IEEE Trans. Veh. Technol.

Self Cite

164

125

View full text Add to dashboard Cite

Abstract-There is emerging interest in more detailed models for wireless shadowing, which may include nonconstant shadowing variance, non-lognormal shadowing, and, most importantly, correlation between paths; we focus on this last aspect. This paper offers a structured synthesis of the existing literature on autocorrelation and cross-correlation in wireless shadowing and attempts to fill existing gaps in the analysis of correlation models. We make a survey of these models and argue, as has previously been observed, that certain models are not mathematically feasible, which may lead to problems in simulations or analysis. We then state some theorems that test whether the models are positive semidefinite, which is the central necessary condition for feasibility, and evaluate the existing models accordingly. Additionally, we evaluate the models according to their physical plausibility, which leads us to choose one model among many as arguably the best one in existence so far. This paper should be useful as a guide on how to implement shadowing correlation in one's work, how to choose an appropriate correlation model, and how to modify existing models or create new models so that they fulfill mathematical feasibility.

show abstract

“…In this paper, the correlated shadowing model studied in [10], [15] is used. This model is a two dimensional model, it depends on both the angle (φ) and the distance ratio (R, in dB) between any two points r 1 and r 2 .…”

Section: B the Shadowing Modelmentioning

confidence: 99%

On the impact of correlated shadowing on the performance of user-in-the-loop for mobility

Beitelmal

Schoenen

Yanıkömeroğlu

2012

2012 IEEE International Conference on Communications (ICC)

Self Cite

View full text Add to dashboard Cite

Abstract-The cellular network users are demanding more traffic and expecting a ubiquitous high data rate. Several techniques are investigated to cope with this massive demand. All the current solutions are focusing on improving this issue from the supply side. However it is expected that a significant improvement on the system performance can be gained if the end users become a part of the system and not just consumers. The user-in-the-loop (UIL) spatial approach provides a solution to fulfil the increasing traffic demand by convincing users to move to locations with higher SINR values. The previous results of the UIL are promising and a higher cell spectral efficiency is achieved only by the involvement of the users and without any investment on the supply side. UIL is a user-centric approach that offers an incentive to influence users' behavior to participate in the system improvement process. In this paper, the previous ideal environment of UIL is extended by integrating the important effect of correlated shadowing to the analysis of UIL performance. The obtained results in this paper confirm the previous results and promise significant performance improvements. Results show that the achieved higher spectral efficiency and the required moving distance depend on the correlation parameters.

show abstract

Efficient Simulation using Shadowing Fields of Many Wireless Interferers with Correlated Shadowing

Cited by 5 publications

References 12 publications

Effects of Correlated Shadowing Modeling on Performance Evaluation of Wireless Sensor Networks

Effects of Correlated Shadowing Modeling on Performance Evaluation of Wireless Sensor Networks

On the Feasibility of Wireless Shadowing Correlation Models

On the impact of correlated shadowing on the performance of user-in-the-loop for mobility

Contact Info

Product

Resources

About