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Fully Generalized Quadrature Spatial Modulation Performance with Variable Transmit Antenna Combinations.

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Title: Fully Generalized Quadrature Spatial Modulation Performance with Variable Transmit Antenna Combinations.
Authors: Gunde, Kiran1 (AUTHOR) kirangunde4u@gmail.com, Sundru, Anuradha2 (AUTHOR) anuradha@nitw.ac.in
Source: Wireless Personal Communications. Jul2025, Vol. 143 Issue 1/2, p257-270. 14p.
Subjects: Transmitting antennas, Bit error rate, Maximum likelihood detection, Wireless communications, Quadrature amplitude modulation, Bandwidths
Abstract: Quadrature spatial modulation (QSM) scheme utilizes both in-phase and quadrature components to transmit the real and imaginary parts of the complex data symbol. A modified generalised QSM (mGQSM) scheme improves the spectral efficiency (SE) of the QSM by assuming more than one radio frequency (RF) chain. However, the SE of the conventional space modulation techniques (SMTs) is restricted to logarithmic proportional to the number of transmit antennas. Recently, a fully QSM (F-QSM) was introduced to achieve a linear proportionality between SE and number of transmit antennas by using a novel transmission mechanism. In this paper, we propose a fully generalized QSM (FGQSM) scheme to enhance the SE of F-QSM and mGQSM. In FGQSM, a variable number of transmit antenna combinations are used to transmit multiple data symbols. Moreover, the proposed scheme provides a linear proportionality between SE and number of transmit antennas which gives higher SE for lower number of transmit antennas. The bit error rate (BER) performance of the FGQSM is evaluated using the maximum-likelihood (ML) detector and compared it with mGQSM, RC-mGQSM, and QSM systems. Also, the FGQSM and F-QSM system performances are compared under imperfect channel conditions. [ABSTRACT FROM AUTHOR]
Copyright of Wireless Personal Communications is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Fully Generalized Quadrature Spatial Modulation Performance with Variable Transmit Antenna Combinations.
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  Data: <searchLink fieldCode="AR" term="%22Gunde%2C+Kiran%22">Gunde, Kiran</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kirangunde4u@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Sundru%2C+Anuradha%22">Sundru, Anuradha</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> anuradha@nitw.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Wireless+Personal+Communications%22">Wireless Personal Communications</searchLink>. Jul2025, Vol. 143 Issue 1/2, p257-270. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Transmitting+antennas%22">Transmitting antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Bit+error+rate%22">Bit error rate</searchLink><br /><searchLink fieldCode="DE" term="%22Maximum+likelihood+detection%22">Maximum likelihood detection</searchLink><br /><searchLink fieldCode="DE" term="%22Wireless+communications%22">Wireless communications</searchLink><br /><searchLink fieldCode="DE" term="%22Quadrature+amplitude+modulation%22">Quadrature amplitude modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Bandwidths%22">Bandwidths</searchLink>
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  Label: Abstract
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  Data: Quadrature spatial modulation (QSM) scheme utilizes both in-phase and quadrature components to transmit the real and imaginary parts of the complex data symbol. A modified generalised QSM (mGQSM) scheme improves the spectral efficiency (SE) of the QSM by assuming more than one radio frequency (RF) chain. However, the SE of the conventional space modulation techniques (SMTs) is restricted to logarithmic proportional to the number of transmit antennas. Recently, a fully QSM (F-QSM) was introduced to achieve a linear proportionality between SE and number of transmit antennas by using a novel transmission mechanism. In this paper, we propose a fully generalized QSM (FGQSM) scheme to enhance the SE of F-QSM and mGQSM. In FGQSM, a variable number of transmit antenna combinations are used to transmit multiple data symbols. Moreover, the proposed scheme provides a linear proportionality between SE and number of transmit antennas which gives higher SE for lower number of transmit antennas. The bit error rate (BER) performance of the FGQSM is evaluated using the maximum-likelihood (ML) detector and compared it with mGQSM, RC-mGQSM, and QSM systems. Also, the FGQSM and F-QSM system performances are compared under imperfect channel conditions. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Wireless Personal Communications is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11277-025-11834-z
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      – Code: eng
        Text: English
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        PageCount: 14
        StartPage: 257
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      – SubjectFull: Transmitting antennas
        Type: general
      – SubjectFull: Bit error rate
        Type: general
      – SubjectFull: Maximum likelihood detection
        Type: general
      – SubjectFull: Wireless communications
        Type: general
      – SubjectFull: Quadrature amplitude modulation
        Type: general
      – SubjectFull: Bandwidths
        Type: general
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      – TitleFull: Fully Generalized Quadrature Spatial Modulation Performance with Variable Transmit Antenna Combinations.
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            NameFull: Gunde, Kiran
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            NameFull: Sundru, Anuradha
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            – D: 01
              M: 07
              Text: Jul2025
              Type: published
              Y: 2025
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              Value: 1/2
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            – TitleFull: Wireless Personal Communications
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