Techniques for System Information Broadcast in Cell-Free Massive MIMO

Abstract

We consider transmission of system information in a cell-free massive MIMO system, when the transmitting access points do not have any channel state information and the receiving terminal has to estimate the channel based on downlink pilots. We analyze the system performance in terms of outage rate and coverage probability, and use space-time block codes to increase performance. We propose a heuristic method for pilot/data power optimization that can be applied without any channel state information at the access points. We also analyze the problem of grouping the access points, which is needed when the single-antenna access points jointly transmit a space-time block code.

Published in IEEE Transactions on Communications, 30 pages, 10 figures

References in corpus (4)

• A Tractable Approach to Coverage and Rate in Cellular Networks
• Modeling and Analysis of Cellular Networks using Stochastic Geometry: A Tutorial
• Optimal Pilot and Payload Power Control in Single-Cell Massive MIMO Systems
• Stochastic Geometry Modeling of Cellular Networks: Analysis, Simulation and Experimental Validation

Cited by in corpus (1)

• Improving Sum-Rate of Cell-Free Massive MIMO with Expanded Compute-and-Forward