Investigating the Performance of Coded GSIM DCSK Communication Systems over Multipath Rayleigh Fading Channel
Abstract
Index modulation−based differential chaos shift keying (IM−DCSK) is a promising technique in wireless communication systems. Among all schemes, a Grouping Subcarrier Index Modulation DCSK (GSIM−DCSK) supports suit−coded modulation to improve bit error rate (BER) over a multipath Rayleigh fading channel, known as Coded GSIM−DCSK (CGSIM−DCSK) system. In the proposed method, all the index modulation bits are detected at the receiver side and then converted into a bipolar form to pass them through the channel decoder system along with the soft modulated bits. The results show that CGSIM−DCSK system with two schemes that are CGSIM−DCSK1 and CGSIM−DCSK2 are improved by the proposed coding techniques, with the LDPC code barely superior to the New Radio−Polar Code (NRPC). Furthermore, the performance of CGSIM−DCSK1 outperforms that of CGSIM−DCSK2 with lower information rate.
Keywords
Grouping Subcarrier Index Modulation based DCSK, LDPC, NRPC, multipath Rayleigh fading channel
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A. Al-Askery, F. Hasan and A. Thabit, "Investigating the Performance of Coded GSIM DCSK Communication Systems over Multipath Rayleigh Fading Channel," in Journal of Communications Software and Systems, vol. 20, no. 4, pp. 298-306, December 2024, doi: https://doi.org/10.24138/jcomss-2024-0072
@article{al-askery2024investigatingperformance,
author = {Ali Jaber Al-Askery and Fadhil Sahib Hasan and Ahmed A. Thabit},
title = {Investigating the Performance of Coded GSIM DCSK Communication Systems over Multipath Rayleigh Fading Channel},
journal = {Journal of Communications Software and Systems},
month = {12},
year = {2024},
volume = {20},
number = {4},
pages = {298--306},
doi = {https://doi.org/10.24138/jcomss-2024-0072},
url = {https://doi.org/https://doi.org/10.24138/jcomss-2024-0072}
}