NDLI: Downlink Cellular Network Analysis With Multi-Slope Path Loss Models

Content Provider	IEEE Xplore Digital Library
Author	Xinchen Zhang Andrews, J.G.
Copyright Year	1972
Abstract	Existing cellular network analyses, and even simulations, typically use the standard path loss model where received power decays like \|\|x\|\|^-α over a distance \|\|x}}. This standard path loss model is quite idealized, and in most scenarios the path loss exponent α is itself a function of \|\|x\|\|, typically an increasing one. Enforcing a single path loss exponent can lead to orders of magnitude differences in average received and interference powers versus the true values. In this paper, we study multi-slope path loss models, where different distance ranges are subject to different path loss exponents. We focus on the dual-slope path loss function, which is a piece-wise power law and continuous and accurately approximates many practical scenarios. We derive the distributions of SIR, SNR, and finally SINR before finding the potential throughput scaling, which provides insight on the observed cell-splitting rate gain. The exact mathematical results show that the SIR monotonically decreases with network density, while the converse is true for SNR, and thus the network coverage probability in terms of SINR is maximized at some finite density. With ultra-densification (network density goes to infinity), there exists a phase transition in the near-field path loss exponent α₀: if α₀ >1 unbounded potential throughput can be achieved asymptotically; if α₀ <;1, ultra-densification leads in the extreme case to zero throughput.
Page Count	14
File Size	979248
Starting Page	1881
Ending Page	1894
File Format	PDF
ISSN	00906778
Volume Number	63
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Standards Signal to noise ratio Fading Throughput Analytical models Mathematical model 5G Cellular networks densification dual-slope path loss functions stochastic geometry HetNets
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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