Title: The novel approach to spectral efficiency enhancement using massive MIMO in LoS

Authors: Nirav D. Patel; Vijay K. Patel

Addresses: Faculty of Engineering and Technology, Ganpat University, 384012, India ' Faculty of Engineering and Technology, Ganpat University, 384012, India

Abstract: Future cellular wireless communication is likely to be shifted at mmWave band and results in large propagation loss. The loss can be reduced by shorter range and LoS type of communication. Focusing on futuristic scenario, the goal is to determine average sum Spectral Efficiency using OCM estimator and compare it with other estimators in LoS. Also Massive MIMO technology used to compensate for propagation loss along with the spatial multiplexing, beam forming, diversity gains. The multi-cell Massive MIMO system with maximum ratio transmit/receive precoding/combing method is considered. The obtained results are 26.09, 25.35, 24.56 and 15.18 bits/s/Hz/cell sum averaged UL SE and 26.80, 23.56, 23.14 and 15.06 bits/s/Hz/cell sum averaged DL SE using OCM, MMSE, EW-MMSE and LS estimators respectively. The OCM estimator outperform over other estimators. Also in general averaged sum spectral efficiency is increasing function of number of antennas at BS.

Keywords: only channel mean estimator; massive MIMO; spectral efficiency; mmWave band; minimum mean square error; element-wise minimum mean square error; least square error.

DOI: 10.1504/IJMNDI.2023.133237

International Journal of Mobile Network Design and Innovation, 2023 Vol.10 No.4, pp.202 - 211

Received: 12 Jul 2022
Accepted: 05 Oct 2022
Published online: 03 Sep 2023 *