Abstract
This paper introduces a new two-way half-duplex cooperative communication system based on joint grou** subcarrier-permutation index modulation-based differential chaos shift keying (GSPIM-DCSK), a novel modulation scheme that enhances the existing grou** subcarrier index modulation (GSIM-DCSK) system by utilizing a permutation index to load additional data bits in order to enhance its energy efficiency, data rate, and BER performance. Through a relay, this cooperative system allows two users to communicate. While the input bits are separated into groups consisting of carrier, permutation, and modulated bits, GSPIM-DCSK uses a permutation index to send additional data bits. Within each group, the carrier index bits choose which subcarrier is inactive. The bit error rate (BER) of GSPIM-DCSK under various channel circumstances is calculated as part of the performance evaluation. Furthermore, the performance of the new cooperative system employing GSPIM-DCSK is contrasted with that of a conventional cooperative system using DCSK in terms of BER under different channels. The results and analysis provide valuable insights into the effectiveness and advantages of the proposed GSPIM-DCSK modulation scheme and its cooperative communication application.
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This work is supported by the College of Engineering/Mustansiriyah University (https://www.uomustansiriyah.edu.iq/).
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Nazar, B., Hasan, F.S. (2024). Enhanced Two-Way Cooperative DCSK System via Grou** Subcarrier-Permutation Index Modulation. In: Bhateja, V., Chowdary, P.S.R., Flores-Fuentes, W., Urooj, S., Sankar Dhar, R. (eds) Evolution in Signal Processing and Telecommunication Networks. ICMEET 2023. Lecture Notes in Electrical Engineering, vol 1155. Springer, Singapore. https://doi.org/10.1007/978-981-97-0644-0_3
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