Sequential Multiuser Scheduling and Power Allocation for Cell-Free Multiple-Antenna Networks

arXiv (Cornell University)

Abstract

Resource allocation is a fundamental task in cell-free (CF) massive multi-input multi-output (MIMO) systems, which can effectively improve the network performance. In this paper, we study the downlink of CF MIMO networks with network clustering and linear precoding, and develop a sequential multiuser scheduling and power allocation scheme. In particular, we present a multiuser scheduling algorithm based on greedy techniques and a gradient ascent {(GA)} power allocation algorithm for sum-rate maximization when imperfect channel state information (CSI) is considered. Numerical results show the superiority of the proposed sequential scheduling and power allocation scheme and algorithms to existing approaches while reducing the computational complexity and the signaling load.

Authors 4

1. S. Mashdour

   University of York

   Affiliation as printed

   University of York , United Kingdom

2. Anke Schmeink Aachen Chair of Information Theory and Data Analytics

   RWTH Aachen University

   Affiliation as printed

   Chair of Information Theory and Data Analytics , RWTH Aachen University , 52062 Aachen , Germany

3. Rodrigo C. de Lamare

   Pontifícia Universidade Católica do Rio de Janeiro

   Affiliation as printed

   ⋆ Centre for Telecommunications Studies , Pontifical Catholic University of Rio de Janeiro , Brazil Department of Electronic Engineering ,

4. J. P. Sales