@article{Joudeh:2019:10.1109/TIT.2019.2913633,
author = {Joudeh, H and Clerckx, B},
doi = {10.1109/TIT.2019.2913633},
journal = {IEEE Transactions on Information Theory},
pages = {7208--7232},
title = {On the optimality of treating inter-cell interference as noise in uplink cellular networks},
url = {http://dx.doi.org/10.1109/TIT.2019.2913633},
volume = {65},
year = {2019}
}

Download

TY  - JOUR
AB  - In this paper, we explore the information-theoretic optimality of treating interference as noise (TIN) in cellular networks. We focus on uplink scenarios modeled by the Gaussian interfering multiple access channel (IMAC), comprising K mutually interfering multiple access channels (MACs), each formed by an arbitrary number of transmitters communicating independent messages to one receiver. We define TIN for this setting as a scheme in which each MAC (or cell) performs a power-controlled version of its capacity-achieving strategy, with Gaussian codebooks and successive decoding, while treating interference from all other MACs (i.e. inter-cell interference) as noise. We characterize the generalized degrees-of-freedom (GDoF) region achieved through the proposed TIN scheme, and then identify conditions under which this achievable region is convex without the need for time-sharing. We then tighten these convexity conditions and identify a regime in which the proposed TIN scheme achieves the entire GDoF region of the IMAC and is within a constant gap of the entire capacity region.
AU  - Joudeh,H
AU  - Clerckx,B
DO  - 10.1109/TIT.2019.2913633
EP  - 7232
PY  - 2019///
SN  - 0018-9448
SP  - 7208
TI  - On the optimality of treating inter-cell interference as noise in uplink cellular networks
T2  - IEEE Transactions on Information Theory
UR  - http://dx.doi.org/10.1109/TIT.2019.2913633
UR  - https://arxiv.org/abs/1809.03309
UR  - http://hdl.handle.net/10044/1/70277
VL  - 65
ER  - 

Download