A hybrid autoencoder and index modulation framework for OTFS modulation

This paper presents an innovative approach to orthogonal time frequency space (OTFS) modulation by integrating autoencoder-based enhanced (AEE) joint delay-Doppler index modulation (JDDIM) techniques. The proposed AEE-JDDIM-OTFS framework leverages deep learning to optimize the mapping and demapping...

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Published in:Signal, image and video processing Vol. 19; no. 1; p. 13
Main Authors: Tek, Yusuf İslam, Doğukan, Ali Tuğberk, Gevez, Yarkın, Pıhtılı, Mehmet Ertuğ, Başar, Ertuğrul
Format: Journal Article
Language:English
Published: London Springer London 01.01.2025
Springer Nature B.V
Subjects:
Bit error rate
Complexity
Computer Imaging
Computer Science
Deep learning
Design
Energy efficiency
Image Processing and Computer Vision
Modulation
Multimedia Information Systems
Original Paper
Pattern Recognition and Graphics
Sensors
Signal,Image and Speech Processing
Vision
Wireless communication systems
Wireless communications
Deep learning
Delay-Doppler communication
Index modulation (IM)
Subframe
Autoencoder (AE)
OTFS
ISSN:1863-1703, 1863-1711
Online Access:Get full text
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Summary:This paper presents an innovative approach to orthogonal time frequency space (OTFS) modulation by integrating autoencoder-based enhanced (AEE) joint delay-Doppler index modulation (JDDIM) techniques. The proposed AEE-JDDIM-OTFS framework leverages deep learning to optimize the mapping and demapping processes, significantly improving spectral and energy efficiency in high-mobility communication scenarios. The system’s performance is further enhanced by the introduction of a low-complexity greedy detector that maintains robust detection accuracy, even under imperfect channel state information (CSI) conditions. Extensive simulation results demonstrate that the proposed scheme achieves superior bit error rate (BER) performance compared to conventional OTFS and other OTFS-based modulation schemes, even in imperfect channel state information situations. The findings suggest that the AEE-JDDIM-OTFS framework offers a practical, low-complexity solution with promising potential for next-generation wireless communication systems.
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ISSN:1863-1703
1863-1711
DOI:10.1007/s11760-024-03688-y