Open AccessOPTIMAL PAIR-WISE SUS ALGORITHM AS PROPORTIONAL FAIR ALGORITHM FOR MU-MIMO-OFDM SYSTEMS
Author(s) -
Aleksandra S. Panajotović,
Daniela Milović
Publication year - 2020
Publication title -
facta universitatis. series: automatic control and robotics
Language(s) - English
Resource type - Journals
eISSN - 1820-6425
pISSN - 1820-6417
DOI - 10.22190/fuacr2001011p
Subject(s) - mimo , orthogonal frequency division multiplexing , algorithm , precoding , computer science , throughput , beamforming , control theory (sociology) , telecommunications , wireless , artificial intelligence , channel (broadcasting) , control (management)
In this paper, we research proportional fairness of the optimal pair-wise semi-orthogonal user selection (SUS) algorithm used in the MU-MIMO-OFDM system compliant with IEEE 802.11ac standard. Zero-forcing beamforming (ZFBF) is applied in the system as a precoding technique in order to cancel user interferences. Two different scenarios are considered: homogeneous and heterogeneous. Beside the proportional fairness, a throughput performance of the MU-MIMO-OFDM system is analyzed for both scenarios too. Simulation results show that the optimal pair-wise SUS algorithm is an excellent solution to realize the trade-off between the proportional fairness among users and the achieved system throughput.