Four Single-Sideband M-QAM Modulation using Soft Input Soft Output Equalizer over OFDM

Alhasani M. Mustafa, Quang N. Nguyen, Takuro Sato, Gen Ichhiro Ohta

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

2 Citations (Scopus)

Abstract

The Single Sideband (SSB) modulation through Hilbert transformation has successfully transmitted data using only half bandwidth for the same amount of contained information. Towards this line, the Four Single SideBand (4-SSB) using QPSK modulation over OFDM was proposed as a new applicable modulation for the next generation communication system, such as 5G. This approach can improve the network efficiency, however, the InterSymbol Interference (ISI) is substantially introduced in 4-SSB based modulation due to the wireless channel characteristics, especially when we are increasing the order of modulation. Particularly, the Widely Linear Minimum Mean Squared Error (MMSE) equalizer is impractical in high order modulation because of its high performance degradation. In this paper, we propose a 4-SSB M-QAM over OFDM approach to improve the modulation feasibility and data rate, compared to the previous 4-SSB using QPSK over OFDM. The proposal uses the Infinite Length MMSE Soft Input Soft Output (SISO) equalizer to deal with ISI induced by the Finite Impulse Response (FIR) of the Hilbert transform filter. The evaluation results show that the proposed 4-SSB-based modulation technique using MMSE SISO equalizer can considerably reduce the effect of ISI in non-ideal environments, including the Additive White Gaussian Noise (AWGN) and fading channel.

Original languageEnglish
Title of host publication2018 28th International Telecommunication Networks and Applications Conference, ITNAC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538671771
DOIs
Publication statusPublished - 2019 Jan 16
Event28th International Telecommunication Networks and Applications Conference, ITNAC 2018 - Sydney, Australia
Duration: 2018 Nov 212018 Nov 23

Publication series

Name2018 28th International Telecommunication Networks and Applications Conference, ITNAC 2018

Conference

Conference28th International Telecommunication Networks and Applications Conference, ITNAC 2018
CountryAustralia
CitySydney
Period18/11/2118/11/23

Keywords

  • Fading Channel
  • InterSymbol Interference (ISI)
  • Orthogonal 4-SSB Element Modulation
  • Single Sideband (SSB)
  • Turbo Equalization

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software
  • Safety, Risk, Reliability and Quality

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  • Cite this

    Mustafa, A. M., Nguyen, Q. N., Sato, T., & Ohta, G. I. (2019). Four Single-Sideband M-QAM Modulation using Soft Input Soft Output Equalizer over OFDM. In 2018 28th International Telecommunication Networks and Applications Conference, ITNAC 2018 [8615451] (2018 28th International Telecommunication Networks and Applications Conference, ITNAC 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ATNAC.2018.8615451