Paper Info
Title
Uplink pilot and data power control for single cell massive MIMO systems with MRC
Abstract
This paper considers the jointly optimal pilot and data power allocation in single cell uplink massive MIMO systems. A closed form solution for the optimal length of the training interval is derived. Using the spectral efficiency (SE) as performance metric and setting a total energy budget per coherence interval the power control is formulated as optimization problems for two different objective functions: the minimum SE among the users and the sum SE. The optimal power control policy is found for the case of maximizing the minimum SE by converting it to a geometric program (GP). Since maximizing the sum SE is an NP-hard problem, an efficient algorithm is developed for finding KKT (local maximum) points. Simulation results show the advantage of optimizing the power control over both pilot and data power, as compared to heuristic power control policies.
Year
DOI
Venue
2015
10.1109/ISWCS.2015.7454371
2015 International Symposium on Wireless Communication Systems (ISWCS)
Keywords
Field
DocType
uplink pilot,data power control,single cell massive MIMO system,MRC,optimal pilot,data power allocation,closed form solution,training interval optimal length,spectral efficiency,SE,energy budget,optimization problem,geometric program,GP,NP-hard problem,KKT
Mathematical optimization,Heuristic,Control theory,Performance metric,Power control,Closed-form expression,Spectral efficiency,Karush–Kuhn–Tucker conditions,Optimization problem,Mathematics,Telecommunications link
Journal
Volume
Citations 
PageRank 
abs/1509.02633
4
0.43
References 
Authors
11
3
Name
Order
Citations
PageRank
Hei Victor Cheng17010.01
Emil Björnson23446171.49
Erik G. Larsson310189605.81