scispace - formally typeset
Proceedings ArticleDOI

Joint Power Allocation and Dynamic Cluster Selection in Cell-Free Wireless Networks

Reads0
Chats0
TLDR
In this paper , the uplink power and the dynamic clusters in a cell-free wireless network were jointly optimized to achieve spectral efficiency targets for users in a scalable and efficient manner, where the authors re-purpose a classic iterative algorithm and theoretically prove its convergence to their objectives.
Abstract
Cell-free wireless networks have gained the interest of the research community in recent years due to their potential to provide good quality of service (QoS) to all users. However, this comes at the cost of complex signal processing and high computational demands from the network to actively suppress inter-user interference. In this paper, we undertake joint optimization of the uplink power and the dynamic clusters in a cell-free wireless network to achieve spectral efficiency targets for users in a scalable and efficient manner. To this end, we re-purpose a classic iterative algorithm and theoretically prove its convergence to our objectives. We introduce various base station (BS) subset selection schemes and study their performance, establishing a trade-off between the performance and computational cost of the algorithm while facilitating a distributed operation. The numerical results convey the favorable impact of allowing variable cluster size in a system that employs maximal ratio combining (MRC).

read more

Content maybe subject to copyright    Report

References
More filters
Proceedings ArticleDOI

Scalability Aspects of Cell-Free Massive MIMO

TL;DR: In this paper, the authors address some scalability aspects of cell-free massive MIMO that have been neglected in literature until now, and propose and evaluate a solution related to data processing, network topology and power control.
Journal ArticleDOI

Foundations of User-Centric Cell-Free Massive MIMO

TL;DR: In this article, the fundamental tradeoffs between communication performance, computational complexity, and fronthaul signaling requirements are thoroughly analyzed, while open problems related to these and other resource allocation problems are reviewed.
Journal ArticleDOI

Uplink Fractional Power Control and Downlink Power Allocation for Cell-Free Networks

TL;DR: This letter proposes respective policies for uplink power control and downlink power allocation in cell-free wireless networks, featuring two parameters that again allow effecting a tradeoff between average performance and fairness.
Journal ArticleDOI

Subset MMSE Receivers for Cell-Free Networks

TL;DR: This paper formulates linear MMSE receivers that are both network- and user-centric for the uplink of cell-free wireless networks with centralized processing, offering a multiple-fold improvement over cellular and matched-film counterparts, while being scalable in terms of cost and channel estimation.
Related Papers (5)