Gaussian 1-2-1 Networks with Imperfect Beamforming
Abstract
In this work, we study bounds on the capacity of full-duplex Gaussian 1-2-1 networks with imperfect beamforming. In particular, different from the ideal 1-2-1 network model introduced in [1], in this model beamforming patterns result in side-lobe leakage that cannot be perfectly suppressed. The 1-2-1 network model captures the directivity of mmWave network communications, where nodes communicate by pointing main-lobe "beams" at each other. We characterize the gap between the approximate capacities of the imperfect and ideal 1-2-1 models for the same channel coefficients and transmit power. We show that, under some conditions, this gap only depends on the number of nodes. Moreover, we evaluate the achievable rate of schemes that treat the resulting side-lobe leakage as noise, and show that they offer suitable solutions for implementation.
Keywords
Cite
@article{arxiv.2005.06655,
title = {Gaussian 1-2-1 Networks with Imperfect Beamforming},
author = {Yahya H. Ezzeldin and Martina Cardone and Christina Fragouli and Giuseppe Caire},
journal= {arXiv preprint arXiv:2005.06655},
year = {2020}
}