OFDM-Based Generalized Spatial Modulation for Optical Wireless Communication

Xin Zhong, Chen Chen, Shu Fu, Xin Jian, Min Liu, Xiong Deng

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

3 Citaten (Scopus)

Samenvatting

In this paper, we propose two orthogonal frequency division multiplexing (OFDM)-based generalized spatial modulation (GSM) techniques, i.e., frequency domain GSM (FD-GSM) and time domain GSM (TD-GSM), for indoor multiple-input multiple-output optical wireless communication (MIMO-OWC) systems. Specifically, FD-GSM selects a subset of parallel OFDM modulators to transmit the same quadrature amplitude modulation (QAM) constellation symbol in the subcarrier level, while TD-GSM selects a subset of light-emitting diode (LED) transmitters to transmit the same time domain sample after OFDM modulation. Compared with the existing OFDM-based spatial modulation (SM) scheme, OFDM-based GSM can provide additional transmit diversity. For both FD-GSM and TD-GSM, maximum-likelihood (ML) detectors are employed to recover the spatial and constellation symbols. Moreover, TD-GSM usually requires a secondary direct current (DC) bias to work properly. The simulation results show that in a typical indoor 4times 4 MIMO-OWC system, OFDM-based TD-GSM outperforms OFDM-based FD-GSM by adding a proper secondary DC bias.

Originele taal-2Engels
Titel2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's1311-1316
Aantal pagina's6
ISBN van elektronische versie978-1-6654-2248-2
DOI's
StatusGepubliceerd - 30 aug. 2021
Evenement16th IEEE Conference on Industrial Electronics and Applications, ICIEA 2021 - Chengdu, China
Duur: 1 aug. 20214 aug. 2021
Congresnummer: 16

Congres

Congres16th IEEE Conference on Industrial Electronics and Applications, ICIEA 2021
Land/RegioChina
StadChengdu
Periode1/08/214/08/21

Bibliografische nota

Publisher Copyright:
© 2021 IEEE.

Financiering

This work was supported by the National Natural Science Foundation of China under Grant 61901065.

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