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 , 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.
|Original language||English (US)|
|Title of host publication||2020 IEEE International Symposium on Information Theory, ISIT 2020 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|State||Published - Jun 2020|
|Event||2020 IEEE International Symposium on Information Theory, ISIT 2020 - Los Angeles, United States|
Duration: Jul 21 2020 → Jul 26 2020
|Name||IEEE International Symposium on Information Theory - Proceedings|
|Conference||2020 IEEE International Symposium on Information Theory, ISIT 2020|
|Period||7/21/20 → 7/26/20|
Bibliographical noteFunding Information:
part by NSF awards
Y. H. Ezzeldin and C. Fragouli were supported in part by NSF awards 1514531, 1824568 and UC-NL grant LFR-18-548554.