Power allocation for multipair massive MIMO FD relay systems with low resolution ADCs

Mengxue Tang, Mikko Vehkapera, Xiaoli Chu, Risto Wichman

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

To reduce energy consumption, relay stations with massive antenna arrays can be equipped with low resolution analog-to-digital converters (ADCs). Due to powerful loop interference in full-duplex (FD) relaying, however, low resolution ADCs generate strong quantization noise that has severe impact on the throughput of the system. In this paper, the throughput and energy efficiency of a FD decode-and-forward relay system with low resolution ADCs is investigated. Based on the mathematical analysis, a novel iterative power allocation scheme that mitigates the impact of the quantization noise via reducing the received LI power is proposed. The power allocation scheme aims at maximizing the end-to-end achievable rate by adjusting the per-link transmit powers at the relay. The numerical results show that compared to half-duplex relaying, using FD with the proposed power allocation scheme improves the system throughput and energy efficiency significantly.

Original languageEnglish
Title of host publication2019 16th International Symposium on Wireless Communication Systems (ISWCS)
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages505-510
Number of pages6
ISBN (Electronic)978-1-7281-2527-5
ISBN (Print)978-1-7281-2528-2
DOIs
Publication statusPublished - Aug 2019
MoE publication typeA4 Article in a conference publication
Event16th International Symposium on Wireless Communication Systems, ISWCS 2019 - Oulu, Finland
Duration: 27 Aug 201930 Aug 2019

Conference

Conference16th International Symposium on Wireless Communication Systems, ISWCS 2019
CountryFinland
CityOulu
Period27/08/1930/08/19

Keywords

  • Decode-and-forward
  • Energy efficiency
  • Finite code word length
  • Full-duplex relaying
  • Low resolution ADCs
  • Massive MIMO
  • Power allocation

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  • Cite this

    Tang, M., Vehkapera, M., Chu, X., & Wichman, R. (2019). Power allocation for multipair massive MIMO FD relay systems with low resolution ADCs. In 2019 16th International Symposium on Wireless Communication Systems (ISWCS) (pp. 505-510). [8877176] IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/ISWCS.2019.8877176