TY - JOUR
T1 - Symmetrical Modular Optical Phased Array with Combined Spatial and Amplitude Modulation for Scalable Indoor Wireless Networks
AU - Herath, Kosala
AU - Premaratne, Malin
AU - Gunathilake, Sharadhi
AU - Nirmalathas, Ampalavanapillai
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2024/11/13
Y1 - 2024/11/13
N2 - Scalable optical wireless networks are crucial to address the demand for ultra-broadband wireless connectivity in future workspaces and living environments. This study presents a novel theoretical framework for the dual-carrier modular optical phased array (MOPA) architecture, specifically tailored for indoor wireless communication networks. We introduce the non-uniform spherical wave (NUSW) model for a near-field analysis of electromagnetic radiation in a single-carrier MOPA, extending this to dual-carrier configurations. Our analysis demonstrates enhanced beam-focusing capabilities and significant suppression of grating lobes in the dual-carrier system. Expanding on this theoretical model, we perform a comprehensive numerical analysis of a dual-carrier MOPA system installed on a planar ceiling within an indoor room. To quantitatively assess grating lobe suppression, we propose a novel figure-of-merit (FoM) and compare the beam-focusing performance of both single-And dual-carrier MOPA systems. Furthermore, we introduce a new symmetrical excitation mechanism combined with spatial modulation for data symbol encoding within the MOPA architecture. Our results reveal that this approach provides high-level physical layer security (PLS) for wireless communication. By integrating amplitude shift keying (ASK) with spatial modulation, we evaluate the bit error rate (BER) against signal-To-noise (SNR) ratio across different symmetrical excitation scenarios. This evaluation demonstrates that our system achieves efficient digital signal communication with reduced complexity and robust performance under real-world noise conditions. Our findings advance the understanding of optical phased array systems and underscore their potential for secure, high-performance indoor wireless communication.
AB - Scalable optical wireless networks are crucial to address the demand for ultra-broadband wireless connectivity in future workspaces and living environments. This study presents a novel theoretical framework for the dual-carrier modular optical phased array (MOPA) architecture, specifically tailored for indoor wireless communication networks. We introduce the non-uniform spherical wave (NUSW) model for a near-field analysis of electromagnetic radiation in a single-carrier MOPA, extending this to dual-carrier configurations. Our analysis demonstrates enhanced beam-focusing capabilities and significant suppression of grating lobes in the dual-carrier system. Expanding on this theoretical model, we perform a comprehensive numerical analysis of a dual-carrier MOPA system installed on a planar ceiling within an indoor room. To quantitatively assess grating lobe suppression, we propose a novel figure-of-merit (FoM) and compare the beam-focusing performance of both single-And dual-carrier MOPA systems. Furthermore, we introduce a new symmetrical excitation mechanism combined with spatial modulation for data symbol encoding within the MOPA architecture. Our results reveal that this approach provides high-level physical layer security (PLS) for wireless communication. By integrating amplitude shift keying (ASK) with spatial modulation, we evaluate the bit error rate (BER) against signal-To-noise (SNR) ratio across different symmetrical excitation scenarios. This evaluation demonstrates that our system achieves efficient digital signal communication with reduced complexity and robust performance under real-world noise conditions. Our findings advance the understanding of optical phased array systems and underscore their potential for secure, high-performance indoor wireless communication.
KW - Beam-focusing pattern
KW - Gating lobes
KW - Indoor wireless networks
KW - Modular optical phased array (MOPA)
KW - Near-field modelling
KW - Non-uniform spherical wave (NUSW)
KW - Spatial modulation
UR - http://www.scopus.com/inward/record.url?scp=85209626630&partnerID=8YFLogxK
U2 - 10.1109/OJCOMS.2024.3496866
DO - 10.1109/OJCOMS.2024.3496866
M3 - Article
AN - SCOPUS:85209626630
SN - 2644-125X
VL - 5
SP - 7317
EP - 7340
JO - IEEE Open Journal of the Communications Society
JF - IEEE Open Journal of the Communications Society
ER -