Skip to Main content Skip to Navigation
New interface
Conference papers

Random Access in Uplink Massive MIMO Systems: How to Exploit Asynchronicity and Excess Antennas

Abstract : —Massive MIMO systems, where base stations are equipped with hundreds of antennas, are an attractive way to handle the rapid growth of data traffic. As the number of users increases, the initial access and handover in contemporary networks will be flooded by user collisions. In this work, we propose a random access procedure that resolves collisions and also performs timing, channel, and power estimation by simply utilizing the large number of antennas envisioned in massive MIMO systems and the inherent timing misalignments of uplink signals during network access and handover. Numerical results are used to validate the performance of the proposed solution under different settings. It turns out that the proposed solution can detect the collisions with a probability higher than 90%, while providing reliable timing and channel estimates at the same time. Moreover, numerical results demonstrate that it is robust to overloaded situations.
Document type :
Conference papers
Complete list of metadata

Cited literature [20 references]  Display  Hide  Download
Contributor : Alessio Zappone Connect in order to contact the contributor
Submitted on : Thursday, July 12, 2018 - 12:18:08 PM
Last modification on : Sunday, June 26, 2022 - 2:27:34 AM
Long-term archiving on: : Monday, October 15, 2018 - 6:12:47 PM


Files produced by the author(s)



Luca Sanguinetti, Antonio d'Amico, Michele Morelli, Merouane Debbah. Random Access in Uplink Massive MIMO Systems: How to Exploit Asynchronicity and Excess Antennas. GLOBECOM 2016 - 2016 IEEE Global Communications Conference, Dec 2016, Washington, United States. ⟨10.1109/GLOCOM.2016.7842196⟩. ⟨hal-01789339⟩



Record views


Files downloads