Simplified Interference Modeling in Multi-Cell Multi-Antenna Radio Network Simulations (original) (raw)
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There has been a rapid growth in the data rate carried by cellular services, and this increase along with the emergence of new multimedia applications have motivated the 3rd Generation Partnership (3GPP) Project to launch Long-Term Evolution (LTE) [1]. LTE is the latest standard in the mobile network technology and is designed to meet the ubiquitous demands of next-generation mobile networks. LTE assures significant spectral and energy efficiency gains in both the uplink and downlink with low latency. Multiple access schemes such as Orthogonal Frequency Division Aultiple Access (OFDMA) and Single Carrier Frequency Division Multiple Access (SC-FDMA) which is a modified version of OFDMA have been recently adopted in 3GPP LTE downlink and uplink, respectively [1]. A typical feature of OFDMA is the decomposition of available bandwidth into multiple narrow orthogonal subcarriers. The orthogonality among subcarriers causes minimal intra-cell interference, however, the inter-cell interfere...
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A simpler statistical interference model for millimeter-wave (mmWave) cellular networks for use in 5G is proposed in this work. The accuracy of this model is examined in an outdoor cellular network with different scenarios. The interference accuracy coefficient (IAC) is introduced to quantify the accuracy of predicting an outage event and the similarity between various interference models. In this paper, different signal-to-interference-plus-noise-ratio (SINR) distributions are used and a new framework has been proposed to quantify the similarity between SINR distributions of existing interference models. It is observed that the accuracy of millimeter-wave cellular networks is modeled by simpler interference models which are less erroneous compared to the models used for performance analysis in microwave networks. The results obtained in this work clearly show that in the mmWave networks scenarios with obstacles, the simple interference models are accurate enough. However, in omnidirectional communications, the interference models required are quite complex. Furthermore, in this work, the interference in mmWave networks with a deterministic channel is also modeled using the proposed Two-Ball interference model. This model gives the appropriate results of blockage events due to outages in mmWave networks.
EURASIP Journal on Wireless Communications and Networking, 2011
In this paper, we propose a methodology for estimating the statistics of the intercell interference power in the downlink of a multicellular network. We first establish an analytical expression for the probability law of the interference power when only Rayleigh multipath fading is considered. Next, focusing on a propagation environment where small-scale Rayleigh fading as well as large-scale effects, including attenuation with distance and lognormal shadowing, are taken into consideration, we elaborate a semi-analytical method to build up the histogram of the interference power distribution. From the results obtained for this combined small- and large-scale fading context, we then develop a statistical model for the interference power distribution. The interest of this model lies in the fact that it can be applied to a large range of values of the shadowing parameter. The proposed methods can also be easily extended to other types of networks.
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