Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State Information
In the underlay spectrum sharing approach, cognitive radios have limited coverage area to keep interference protection for the licensed users. Multiple cooperative relays have shown benefit for allowing reliable communication with an increase in the radio coverage area. The performance of an underla...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8432421/ |
| _version_ | 1818645176054185984 |
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| author | Wafaa Radi Reem H. Abdel-Hadi Hesham M. El-Badawy Salwa H. El-Ramly |
| author_facet | Wafaa Radi Reem H. Abdel-Hadi Hesham M. El-Badawy Salwa H. El-Ramly |
| author_sort | Wafaa Radi |
| collection | DOAJ |
| description | In the underlay spectrum sharing approach, cognitive radios have limited coverage area to keep interference protection for the licensed users. Multiple cooperative relays have shown benefit for allowing reliable communication with an increase in the radio coverage area. The performance of an underlay cognitive cooperative multiple relays network (CCMRN) is evaluated in case of imperfect channel state information (CSI). In this paper, CCMRN will be treated as a secondary network with multiple decode and forward relays, whereas the secondary user (SU) transmitter will select a single relay from the available set of relays. The relay selection process is based on obtaining maximum end-to-end effective capacity (C<sub>eff</sub>) as seen by the SU. By assuming cooperation between the licensed primary network and the unlicensed secondary network, the SU and the selective secondary relay can share the spectrum with occupying two orthogonal channels of two different primary users (PUs). According to the average interference power constraint of the PUs, the SU allowed maximum power transmission will be obtained. Network performance is assessed in terms of the SU maximum end-to-end C<sub>eff</sub> as well as outage probability (P<sub>out</sub>). Mathematical expressions for C<sub>eff</sub> and P<sub>out</sub> are derived for practical multipath Rayleigh faded channel. The analytical results illustrate the effect of the imperfect CSI on the performance metrics with applying various constraints such as available multiple relays group size, statistical delay quality of service, and average interference power. |
| first_indexed | 2024-12-17T00:26:35Z |
| format | Article |
| id | doaj.art-81bdd7417e7943f2a42a9bb33ea809ff |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-17T00:26:35Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-81bdd7417e7943f2a42a9bb33ea809ff2022-12-21T22:10:28ZengIEEEIEEE Access2169-35362018-01-016446074461510.1109/ACCESS.2018.28646248432421Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State InformationWafaa Radi0https://orcid.org/0000-0001-8544-9648Reem H. Abdel-Hadi1Hesham M. El-Badawy2Salwa H. El-Ramly3Electronics & Communication Engineering, Canadian International College, Cairo, EgyptNetwork Planning, National Telecommunication Institute, Cairo, EgyptNetwork Planning, National Telecommunication Institute, Cairo, EgyptElectronics & Communication Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, EgyptIn the underlay spectrum sharing approach, cognitive radios have limited coverage area to keep interference protection for the licensed users. Multiple cooperative relays have shown benefit for allowing reliable communication with an increase in the radio coverage area. The performance of an underlay cognitive cooperative multiple relays network (CCMRN) is evaluated in case of imperfect channel state information (CSI). In this paper, CCMRN will be treated as a secondary network with multiple decode and forward relays, whereas the secondary user (SU) transmitter will select a single relay from the available set of relays. The relay selection process is based on obtaining maximum end-to-end effective capacity (C<sub>eff</sub>) as seen by the SU. By assuming cooperation between the licensed primary network and the unlicensed secondary network, the SU and the selective secondary relay can share the spectrum with occupying two orthogonal channels of two different primary users (PUs). According to the average interference power constraint of the PUs, the SU allowed maximum power transmission will be obtained. Network performance is assessed in terms of the SU maximum end-to-end C<sub>eff</sub> as well as outage probability (P<sub>out</sub>). Mathematical expressions for C<sub>eff</sub> and P<sub>out</sub> are derived for practical multipath Rayleigh faded channel. The analytical results illustrate the effect of the imperfect CSI on the performance metrics with applying various constraints such as available multiple relays group size, statistical delay quality of service, and average interference power.https://ieeexplore.ieee.org/document/8432421/Effective capacityimperfect channel state informationoutage probabilityunderlay cognitive cooperative multiple relays network |
| spellingShingle | Wafaa Radi Reem H. Abdel-Hadi Hesham M. El-Badawy Salwa H. El-Ramly Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State Information IEEE Access Effective capacity imperfect channel state information outage probability underlay cognitive cooperative multiple relays network |
| title | Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State Information |
| title_full | Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State Information |
| title_fullStr | Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State Information |
| title_full_unstemmed | Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State Information |
| title_short | Performance Assessment for Cognitive Cooperative Multiple Relays Network (CCMRN) With Imperfect Channel State Information |
| title_sort | performance assessment for cognitive cooperative multiple relays network ccmrn with imperfect channel state information |
| topic | Effective capacity imperfect channel state information outage probability underlay cognitive cooperative multiple relays network |
| url | https://ieeexplore.ieee.org/document/8432421/ |
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