Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless Networks
Recently, reconfigurable intelligent surfaces (RISs) have been exhibited as a promising candidate for sixth generation (6G) wireless networks. Moreover, the concept of index modulation (IM) and its variants as spatial modulation (SM), has been adapted as another solution to improve the spectral effi...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10342675/ |
| _version_ | 1827398975397822464 |
|---|---|
| author | Shaimaa Hussein Yasin Osama A. Omer Ahmed Mohammed Nor Octavian Fratu Simona Halunga Ahmed S. Mubarak |
| author_facet | Shaimaa Hussein Yasin Osama A. Omer Ahmed Mohammed Nor Octavian Fratu Simona Halunga Ahmed S. Mubarak |
| author_sort | Shaimaa Hussein Yasin |
| collection | DOAJ |
| description | Recently, reconfigurable intelligent surfaces (RISs) have been exhibited as a promising candidate for sixth generation (6G) wireless networks. Moreover, the concept of index modulation (IM) and its variants as spatial modulation (SM), has been adapted as another solution to improve the spectral efficiency (SE) and the energy efficiency (EE) for these wireless systems. Leveraging the inherent advantages of both SM and RIS, this paper proposes a dual hup RIS-based SM (DH RIS-SM) scheme. In addition, a novel RIS-based enhanced spatial modulation (RIS-ESM) scheme is proposed for further performance enhancement. In the proposed RIS-ESM scheme, information bits are conveyed by the indexes of the active antennas in addition to the constellations transmitted from each one of them with primary and secondary modulations, which in turns leads to significant improvements in both the SE and the EE. Moreover, for further EE enhancement, this paper proposes RIS-ESM-<inline-formula> <tex-math notation="LaTeX">$P_{8}$ </tex-math></inline-formula>, as a variant of the proposed ESM scheme, in which the primary modulation is subdivided into two subgroups and the lower-energy subgroup is used in a larger number of combinations. A mathematical framework is presented by using a greedy detector for the calculation of the bit error probability (BEP) for the DH RIS-SM scheme. Also, the simulation results show that the proposed RIS-ESM schemes outperforms the conventional RIS-SM schemes in terms of the SE and the EE. |
| first_indexed | 2024-03-08T19:37:38Z |
| format | Article |
| id | doaj.art-c125adb88c36423b9191dae21449e17c |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-08T19:37:38Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-c125adb88c36423b9191dae21449e17c2023-12-26T00:04:40ZengIEEEIEEE Access2169-35362023-01-011114265214266210.1109/ACCESS.2023.333964410342675Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless NetworksShaimaa Hussein Yasin0Osama A. Omer1https://orcid.org/0000-0001-9302-7875Ahmed Mohammed Nor2https://orcid.org/0000-0002-6943-892XOctavian Fratu3Simona Halunga4https://orcid.org/0000-0001-7028-3921Ahmed S. Mubarak5https://orcid.org/0000-0002-6375-4243Department of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan, EgyptDepartment of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan, EgyptDepartment of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan, EgyptDepartment of Telecommunications, National University of Science and Technology POLITEHNICA Bucharest, Bucharest, RomaniaDepartment of Telecommunications, National University of Science and Technology POLITEHNICA Bucharest, Bucharest, RomaniaDepartment of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan, EgyptRecently, reconfigurable intelligent surfaces (RISs) have been exhibited as a promising candidate for sixth generation (6G) wireless networks. Moreover, the concept of index modulation (IM) and its variants as spatial modulation (SM), has been adapted as another solution to improve the spectral efficiency (SE) and the energy efficiency (EE) for these wireless systems. Leveraging the inherent advantages of both SM and RIS, this paper proposes a dual hup RIS-based SM (DH RIS-SM) scheme. In addition, a novel RIS-based enhanced spatial modulation (RIS-ESM) scheme is proposed for further performance enhancement. In the proposed RIS-ESM scheme, information bits are conveyed by the indexes of the active antennas in addition to the constellations transmitted from each one of them with primary and secondary modulations, which in turns leads to significant improvements in both the SE and the EE. Moreover, for further EE enhancement, this paper proposes RIS-ESM-<inline-formula> <tex-math notation="LaTeX">$P_{8}$ </tex-math></inline-formula>, as a variant of the proposed ESM scheme, in which the primary modulation is subdivided into two subgroups and the lower-energy subgroup is used in a larger number of combinations. A mathematical framework is presented by using a greedy detector for the calculation of the bit error probability (BEP) for the DH RIS-SM scheme. Also, the simulation results show that the proposed RIS-ESM schemes outperforms the conventional RIS-SM schemes in terms of the SE and the EE.https://ieeexplore.ieee.org/document/10342675/Reconfigurable intelligent surfaces (RISs)spatial modulation (SM)enhanced spatial modulation5G/6GQAM |
| spellingShingle | Shaimaa Hussein Yasin Osama A. Omer Ahmed Mohammed Nor Octavian Fratu Simona Halunga Ahmed S. Mubarak Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless Networks IEEE Access Reconfigurable intelligent surfaces (RISs) spatial modulation (SM) enhanced spatial modulation 5G/6G QAM |
| title | Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless Networks |
| title_full | Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless Networks |
| title_fullStr | Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless Networks |
| title_full_unstemmed | Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless Networks |
| title_short | Reconfigurable Intelligent Surfaces-Assisted Enhanced Spatial Modulation for Future Wireless Networks |
| title_sort | reconfigurable intelligent surfaces assisted enhanced spatial modulation for future wireless networks |
| topic | Reconfigurable intelligent surfaces (RISs) spatial modulation (SM) enhanced spatial modulation 5G/6G QAM |
| url | https://ieeexplore.ieee.org/document/10342675/ |
| work_keys_str_mv | AT shaimaahusseinyasin reconfigurableintelligentsurfacesassistedenhancedspatialmodulationforfuturewirelessnetworks AT osamaaomer reconfigurableintelligentsurfacesassistedenhancedspatialmodulationforfuturewirelessnetworks AT ahmedmohammednor reconfigurableintelligentsurfacesassistedenhancedspatialmodulationforfuturewirelessnetworks AT octavianfratu reconfigurableintelligentsurfacesassistedenhancedspatialmodulationforfuturewirelessnetworks AT simonahalunga reconfigurableintelligentsurfacesassistedenhancedspatialmodulationforfuturewirelessnetworks AT ahmedsmubarak reconfigurableintelligentsurfacesassistedenhancedspatialmodulationforfuturewirelessnetworks |