ETRI Journal

  • 제42권4호
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  • Pages.562-574
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  • 2020
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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On the performance of improved quadrature spatial modulation

  • 투고 : 2019.09.17
  • 심사 : 2020.01.08
  • 발행 : 2020.08.18
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초록

Quadrature spatial modulation (QSM) utilizes the in-phase and quadrature spatial dimensions to transmit the real and imaginary parts of a single signal symbol, respectively. The improved QSM (IQSM) transmits two signal symbols per channel use through a combination of two antennas for each of the real and imaginary parts. The main contributions of this study can be summarized as follows. First, we derive an upper bound for the error performance of the IQSM. We then design constellation sets that minimize the error performance of the IQSM for several system configurations. Second, we propose a double QSM (DQSM) that transmits the real and imaginary parts of two signal symbols through any available transmit antennas. Finally, we propose a parallel IQSM (PIQSM) that splits the antenna set into equal subsets and performs IQSM within each subset using the same two signal symbols. Simulation results demonstrate that the proposed constellations significantly outperform conventional constellations. Additionally, DQSM and PIQSM provide a performance similar to that of IQSM while requiring a smaller number of transmit antennas and outperform IQSM with the same number of transmit antennas.

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피인용 문헌

  1. On the Performance of the Multiple Active Antenna Spatial Modulation with 3-Dimensional Constellation vol.10, pp.11, 2020, https://doi.org/10.3390/app10113718
  2. Performance Analysis and Constellation Design for the Parallel Quadrature Spatial Modulation vol.22, pp.8, 2020, https://doi.org/10.3390/e22080841
  3. Parallel Complex Quadrature Spatial Modulation vol.11, pp.1, 2020, https://doi.org/10.3390/app11010330