Combination of Beamforming with Per-Antenna Power Constraint and Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for Multiuser Massive MIMO-OFDM Transmission

Mikihito Suzuki, Yoshihisa Kishiyama, Kenichi Higuchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, we investigate a method that combines beamforming (BF) with a per-antenna power constraint and adaptive peak-to-average power ratio (PAPR) reduction using the null space of a multiple-input multiple-output (MIMO) channel in multiuser massive MIMO-orthogonal frequency division multiplexing (OFDM) transmission. To improve the tradeoff between the throughput and PAPR, it is necessary to consider both mutually related BF control and PAPR reduction. In the proposed method, PAPR is first suppressed by generating a BF matrix that limits the transmission power variation among transmitter antennas using a firefly algorithm (FA). The subsequent adaptive PAPR reduction processing further reduces the PAPR while mitigating the data throughput degradation due to the interference from the PAPR reduction signal generated by the clipping and filtering (CF) algorithm. This is accomplished by restricting the transmission of the PAPR reduction signal only to the null space of the MIMO channel. Computer simulation results show that the proposed method improves the PAPR versus the throughput characteristics compared to the case using conventional zero forcing (ZF)-based BF.

Original languageEnglish
Title of host publication2018 21st International Symposium on Wireless Personal Multimedia Communications, WPMC 2018
PublisherIEEE Computer Society
Pages134-139
Number of pages6
ISBN (Electronic)9781538657577
DOIs
Publication statusPublished - 2 Jul 2018
Event21st International Symposium on Wireless Personal Multimedia Communications, WPMC 2018 - Chiang Rai, Thailand
Duration: 25 Nov 201828 Nov 2018

Publication series

NameInternational Symposium on Wireless Personal Multimedia Communications, WPMC
Volume2018-November
ISSN (Print)1347-6890

Conference

Conference21st International Symposium on Wireless Personal Multimedia Communications, WPMC 2018
CountryThailand
CityChiang Rai
Period25/11/1828/11/18

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Cite this

Suzuki, M., Kishiyama, Y., & Higuchi, K. (2018). Combination of Beamforming with Per-Antenna Power Constraint and Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for Multiuser Massive MIMO-OFDM Transmission. In 2018 21st International Symposium on Wireless Personal Multimedia Communications, WPMC 2018 (pp. 134-139). [8712912] (International Symposium on Wireless Personal Multimedia Communications, WPMC; Vol. 2018-November). IEEE Computer Society. https://doi.org/10.1109/WPMC.2018.8712912