Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power Optimization
Non-orthogonal multiple access (NOMA) has been widely acclaimed as a promising solution to enhance spectral efficiency, increase user fairness, and scale up the number of users in wireless networks by enabling multiple users to share the symmetrical wireless resources. This work is concerned with th...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
|
| Series: | Symmetry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-8994/14/11/2266 |
| _version_ | 1797466400550289408 |
|---|---|
| author | Hindavi Kishor Jadhav Vinoth Babu Kumaravelu |
| author_facet | Hindavi Kishor Jadhav Vinoth Babu Kumaravelu |
| author_sort | Hindavi Kishor Jadhav |
| collection | DOAJ |
| description | Non-orthogonal multiple access (NOMA) has been widely acclaimed as a promising solution to enhance spectral efficiency, increase user fairness, and scale up the number of users in wireless networks by enabling multiple users to share the symmetrical wireless resources. This work is concerned with the development and implementation of blind reconfigurable intelligent surface (RIS)-aided ordered NOMA (ONOMA) for smart reflector (SR) and access point (AP) configurations. For the RIS-SR-ONOMA and RIS-AP-ONOMA configurations, the closed-form probability of outage expressions is derived, and their performance is reported for distinct values of passive reflector elements. Through optimal power allocation, the downlink (DL) sum capacity is maximized. RIS-aided ONOMA reduces outage rates and increases sum capacity over the traditional ONOMA system. It is discovered that the RIS-aided ONOMA system increases the sum capacity by ≈33% at 20 dB signal-to-noise ratio (SNR) for 32 passive reflector elements. The addition of passive reflector elements and symmetrical allocation among users improves the performance of RIS-SR-ONOMA and RIS-AP-ONOMA in terms of outage probability, sum capacity, and probability of error. The proposed work can be employed in applications such as vehicular ad hoc networks, where obtaining precise channel information is difficult due to the rapid mobility of the vehicles. |
| first_indexed | 2024-03-09T18:36:25Z |
| format | Article |
| id | doaj.art-a2f9a8da718c4961ab1fe8b3719db4ec |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-09T18:36:25Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-a2f9a8da718c4961ab1fe8b3719db4ec2023-11-24T07:07:32ZengMDPI AGSymmetry2073-89942022-10-011411226610.3390/sym14112266Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power OptimizationHindavi Kishor Jadhav0Vinoth Babu Kumaravelu1Department of Communication Engineering, School of Electronics Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaDepartment of Communication Engineering, School of Electronics Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaNon-orthogonal multiple access (NOMA) has been widely acclaimed as a promising solution to enhance spectral efficiency, increase user fairness, and scale up the number of users in wireless networks by enabling multiple users to share the symmetrical wireless resources. This work is concerned with the development and implementation of blind reconfigurable intelligent surface (RIS)-aided ordered NOMA (ONOMA) for smart reflector (SR) and access point (AP) configurations. For the RIS-SR-ONOMA and RIS-AP-ONOMA configurations, the closed-form probability of outage expressions is derived, and their performance is reported for distinct values of passive reflector elements. Through optimal power allocation, the downlink (DL) sum capacity is maximized. RIS-aided ONOMA reduces outage rates and increases sum capacity over the traditional ONOMA system. It is discovered that the RIS-aided ONOMA system increases the sum capacity by ≈33% at 20 dB signal-to-noise ratio (SNR) for 32 passive reflector elements. The addition of passive reflector elements and symmetrical allocation among users improves the performance of RIS-SR-ONOMA and RIS-AP-ONOMA in terms of outage probability, sum capacity, and probability of error. The proposed work can be employed in applications such as vehicular ad hoc networks, where obtaining precise channel information is difficult due to the rapid mobility of the vehicles.https://www.mdpi.com/2073-8994/14/11/2266access point (AP)ordered non-orthogonal multiple access (ONOMA)probability of outagereconfigurable intelligent surfaces (RIS)smart reflectors (SR)sum capacity |
| spellingShingle | Hindavi Kishor Jadhav Vinoth Babu Kumaravelu Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power Optimization Symmetry access point (AP) ordered non-orthogonal multiple access (ONOMA) probability of outage reconfigurable intelligent surfaces (RIS) smart reflectors (SR) sum capacity |
| title | Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power Optimization |
| title_full | Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power Optimization |
| title_fullStr | Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power Optimization |
| title_full_unstemmed | Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power Optimization |
| title_short | Blind RIS Aided Ordered NOMA: Design, Probability of Outage Analysis and Transmit Power Optimization |
| title_sort | blind ris aided ordered noma design probability of outage analysis and transmit power optimization |
| topic | access point (AP) ordered non-orthogonal multiple access (ONOMA) probability of outage reconfigurable intelligent surfaces (RIS) smart reflectors (SR) sum capacity |
| url | https://www.mdpi.com/2073-8994/14/11/2266 |
| work_keys_str_mv | AT hindavikishorjadhav blindrisaidedorderednomadesignprobabilityofoutageanalysisandtransmitpoweroptimization AT vinothbabukumaravelu blindrisaidedorderednomadesignprobabilityofoutageanalysisandtransmitpoweroptimization |