Title: On the performance of modified generalised quadrature spatial modulation under correlated Weibull fading

Authors: Kiran Gunde; Anuradha Sundru

Addresses: Department of Electronics and Communication Engineering, National Institute of Technology, Warangal Telangana, 506004, India ' Department of Electronics and Communication Engineering, National Institute of Technology, Warangal Telangana, 506004, India

Abstract: To improve the data rate of "quadrature spatial modulation (QSM)", a "modified generalised QSM (mGQSM)" scheme is developed. The mGQSM employs two sets of active antenna patterns (AAP), one for transmitting the real part of the selected data symbol and the other for transmitting the imaginary part of the same symbol. In mGQSM, the number of AAP vectors is more when compared to the generalised QSM (GQSM). This paper presents the mGQSM and "reduced codebook mGQSM (RC-mGQSM)" system performances over correlated Weibull fading channels under two different fading environments. We consider Weibull non-fading and deep-fading environments with Weibull parameter values are equal to 5 and 0.5, respectively. Using maximum likelihood (ML) detector, the mGQSM and RC-mGQSM systems are compared to QSM and GQSM systems over uncorrelated and correlated Weibull channels. Also presents the performance of the mGQSM in the existence of an imperfect channel knowledge and compared it to QSM.

Keywords: SM; spatial modulation; mGQSM; modified GQSM; correlated; Weibull fading; imperfect channel; maximum likelihood (ML) detection.

DOI: 10.1504/IJIEI.2022.128445

International Journal of Intelligent Engineering Informatics, 2022 Vol.10 No.3, pp.183 - 195

Received: 19 Sep 2021
Accepted: 12 Mar 2022
Published online: 23 Jan 2023 *

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