RIS-Assisted Receive Generalized Space Shift Keying and Receive Generalized Spatial Modulation
| dc.contributor.advisor | Bedeer Mohamed , Ebrahim | |
| dc.contributor.advisor | Hanif, Muhammad | |
| dc.contributor.committeeMember | Berscheid , Brian | |
| dc.contributor.committeeMember | Liang, Xiaodong | |
| dc.creator | Marin Flores, Porfirio Ameth | |
| dc.creator.orcid | 0009-0007-7842-2376 | |
| dc.date.accessioned | 2024-12-04T19:00:11Z | |
| dc.date.available | 2024-12-04T19:00:11Z | |
| dc.date.copyright | 2024 | |
| dc.date.created | 2024-11 | |
| dc.date.issued | 2024-11-28 | |
| dc.date.submitted | November 2024 | |
| dc.date.updated | 2024-12-04T19:00:11Z | |
| dc.description.abstract | The introduction of the 5th-generation (5G) wireless communication standards has brought new applications and services that demand improved technologies to support growing traffic. To meet these demands, researchers have been exploring advanced 5G and future-oriented 6th-generation (6G) technologies. These envisioned technologies indicate the necessity for innovative communication paradigm shifts, especially at the physical layer. Consequently, there has been a growing interest in controlling the propagation channel, leading to the popularity of reconfigurable intelligent surfaces (RIS) as a potential approach for future wireless communications. Recently, RIS has garnered attention as a potential solution to improve spectrum utilization and energy efficiency (EE). A typical standard RIS model consists of a two-dimensional metasurface of metallic or dielectric materials, equipped with a large array of subwavelength resonators. Software-defined manipulation of these elements modifies electromagnetic (EM) properties, enhancing the reflection of incident radio frequency (RF) signals. Another paradigm that is gaining interest in advancing communication systems is index modulation (IM). With IM schemes, the transmission of information bits occurs by activating or deactivating transmission/reception entities such as transmit antennas, receive antennas, and/or subcarriers. This introduces new dimensions for efficient information conveyance, potentially enhancing the spectral efficiency (SE). %Since IM can exploit the deactivated transmission/reception entities to transmit information bits, it can potentially improve EE. Hence, in this thesis, we focus on the combination of RIS-assisted systems with IM to further enhance the performance of future wireless communication systems. In the first main contribution of the thesis, we enhance the performance of wireless communication systems by utilizing RIS and IM. In particular, we introduce two schemes: RIS-assisted receive generalized space shift keying (RIS-RGSSK) and RIS-assisted receive generalized spatial modulation (RIS-RGSM). In the RIS-RGSSK scheme, information bits are conveyed through selection of multiple receive antennas. The RIS-RGSM scheme takes RIS-RGSSK a step further by conveying information bits not only through the selection of multiple receive antennas but also through embedding information bits in the phase of the received signals using $M$-ary phase shift keying (PSK) modulation. We also present simple yet efficient greedy detectors (GDs) for non-coherent detection of both schemes. Simulation results demonstrate the advantages of our proposed methods over existing schemes such as the RIS-assisted receive quadrature space-shift keying (RIS-RQSSK). In the second main contribution of this thesis, we analyze the performance of the RIS-RGSSK and the RIS-RGSM. Specifically, we find closed-form expressions of the pairwise error probabilities (PEPs) of the RIS-RGSSK and the RIS-RGSM schemes when two antennas are activated at the receiver. Finally, we present comparisons of our analytical results with simulated-based results. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | https://hdl.handle.net/10388/16301 | |
| dc.language.iso | en | |
| dc.subject | Receive Generalized Space Shift Keying (RGSSK) | |
| dc.subject | Receive Generalized Spatial Modulation (RGSM) | |
| dc.subject | Reconfigurable Intelligent Surface (RIS) | |
| dc.subject | Greedy Detector (GD) | |
| dc.subject | Multiple Antenna Selection | |
| dc.subject | Pairwise Error Probability (PEP) | |
| dc.subject | Performance Analysis | |
| dc.subject | RIS-Assisted Communication | |
| dc.title | RIS-Assisted Receive Generalized Space Shift Keying and Receive Generalized Spatial Modulation | |
| dc.type | Thesis | |
| dc.type.material | text | |
| thesis.degree.department | Electrical and Computer Engineering | |
| thesis.degree.discipline | Electrical Engineering | |
| thesis.degree.grantor | University of Saskatchewan | |
| thesis.degree.level | Masters | |
| thesis.degree.name | Master of Science (M.Sc.) |