Iterative receiver compensation of HPA nonlinearity in MIMO-GFDM system

Ari Endang Jayati*, Wirawan Wirawan, Titiek Suryani, Endroyono Endroyono

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Recently, various application scenarios have emerged in new communication networks that have a variety of new requirements such as: ultra-low latency, low out-of-band emission and long battery life. Generalized Frequency Division Multiplexing (GFDM) is one of the nonorthogonal multicarrier techniques that meets these requirements. We study the analysis of nonlinearity effects in a High Power Amplifier (HPA) and crosstalk on Multiple Input Multiple Output (MIMO)-GFDM systems and its compensation. Moreover, proposed is a recurrent receiver compensation method for the joint RF interference in the MIMO-GFDM system. The assumptions made at the receiver considered the characteristics of the HPA. This proposed technique also has the ability to compensate for the combined effects of nonlinear and crosstalk distortion. The simulation results show an improvement in the bit error rate for small iteration numbers, i. e. 1-4 iterations for 16-OQAM mapping. The receiver-based mitigation techniques were used as an option to maintain low-level transmitter complexity. The main advantage is the possible application at the base station without increasing the computational complexity of the mobile terminal as well as the terminal costs or battery life. This means the advanced nature of the technique ensured there was no need to make any changes on the cellular terminal side. Therefore, the performance of the iterative receiver technique proposed in the MIMO-GFDM system is better than other orthogonal multicarrier systems.

Original languageEnglish
Pages (from-to)260-270
Number of pages11
JournalInternational Journal of Intelligent Engineering and Systems
Volume13
Issue number4
DOIs
Publication statusPublished - 2020

Keywords

  • Crosstalk
  • GFDM
  • High power amplifier
  • MIMO
  • Nonlinear distortion

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