Cell-Free Massive MIMO with Limited Backhaul
Manijeh Bashar, Kanapathippillai Cumanan, Alister G. Burr, Hien Quoc, Ngo, and Merouane Debbah

TL;DR
This paper analyzes the performance of cell-free Massive MIMO systems with limited backhaul capacity, proposing optimization and user assignment algorithms to enhance uplink rates under quantization constraints.
Contribution
It introduces a novel max-min optimization framework and iterative solution for cell-free Massive MIMO with quantized signals and limited backhaul.
Findings
Proposed an iterative scheme for max-min uplink rate optimization.
Developed a user assignment algorithm to improve system performance.
Analyzed system performance with different quantization and backhaul constraints.
Abstract
We consider a cell-free Massive multiple-input multiple-output (MIMO) system and investigate the system performance for the case when the quantized version of the estimated channel and the quantized received signal are available at the central processing unit (CPU), and the case when only the quantized version of the combined signal with maximum ratio combining (MRC) detector is available at the CPU. Next, we study the max-min optimization problem, where the minimum user uplink rate is maximized with backhaul capacity constraints. To deal with the max-min non-convex problem, we propose to decompose the original problem into two sub-problems. Based on these sub-problems, we develop an iterative scheme which solves the original max-min user uplink rate. Moreover, we present a user assignment algorithm to further improve the performance of cell-free Massive MIMO with limited backhaul links.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAdvanced MIMO Systems Optimization · Advanced Wireless Network Optimization · Cooperative Communication and Network Coding
