Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks
In this paper, the spatial interference alignment (IA) is investigated in the downlink (DL) of a relay-assisted multi-cell multi-user network. The transmission from the base station (BS) to the mobile station (MS) takes place in two phases with the help of the selected relay station (RS). The closed...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Iran Telecom Research Center
2016-12-01
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| Series: | International Journal of Information and Communication Technology Research |
| Subjects: | |
| Online Access: | http://ijict.itrc.ac.ir/article-1-50-en.html |
| _version_ | 1811169295839789056 |
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| author | Ali Golestani Ali H. Bastami Kamal Mohamed-pour |
| author_facet | Ali Golestani Ali H. Bastami Kamal Mohamed-pour |
| author_sort | Ali Golestani |
| collection | DOAJ |
| description | In this paper, the spatial interference alignment (IA) is investigated in the downlink (DL) of a relay-assisted
multi-cell multi-user network. The transmission from the base station (BS) to the mobile station (MS) takes place in
two phases with the help of the selected relay station (RS). The closed-form IA algorithms are employed in both the
BS to RS and RS to MS links. The performance of this cooperative scheme is analyzed in terms of the sum rate and
the sum degrees of freedom (DoF) for the amplify-and-forward (AF) and decode-and-forward (DF) relaying schemes.
The simulation results of the sum rate show that the DF scheme significantly outperforms the noncooperative minleakage
and max-SINR iterative algorithms over the entire range of SNR, and the AF scheme performs very close to
the min-leakage algorithm. Moreover, the DF scheme outperforms the noncooperative closed-form IA algorithm in
the low and medium-SNR regimes. |
| first_indexed | 2024-04-10T16:40:01Z |
| format | Article |
| id | doaj.art-6fe4c24e87964cfc93a5c65f67bd75fe |
| institution | Directory Open Access Journal |
| issn | 2251-6107 2783-4425 |
| language | English |
| last_indexed | 2024-04-10T16:40:01Z |
| publishDate | 2016-12-01 |
| publisher | Iran Telecom Research Center |
| record_format | Article |
| series | International Journal of Information and Communication Technology Research |
| spelling | doaj.art-6fe4c24e87964cfc93a5c65f67bd75fe2023-02-08T07:55:47ZengIran Telecom Research CenterInternational Journal of Information and Communication Technology Research2251-61072783-44252016-12-0184110Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User NetworksAli Golestani0Ali H. Bastami1Kamal Mohamed-pour2 In this paper, the spatial interference alignment (IA) is investigated in the downlink (DL) of a relay-assisted multi-cell multi-user network. The transmission from the base station (BS) to the mobile station (MS) takes place in two phases with the help of the selected relay station (RS). The closed-form IA algorithms are employed in both the BS to RS and RS to MS links. The performance of this cooperative scheme is analyzed in terms of the sum rate and the sum degrees of freedom (DoF) for the amplify-and-forward (AF) and decode-and-forward (DF) relaying schemes. The simulation results of the sum rate show that the DF scheme significantly outperforms the noncooperative minleakage and max-SINR iterative algorithms over the entire range of SNR, and the AF scheme performs very close to the min-leakage algorithm. Moreover, the DF scheme outperforms the noncooperative closed-form IA algorithm in the low and medium-SNR regimes.http://ijict.itrc.ac.ir/article-1-50-en.htmlcellular networkdegrees of freedominterference alignmentrelaysum rate |
| spellingShingle | Ali Golestani Ali H. Bastami Kamal Mohamed-pour Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks International Journal of Information and Communication Technology Research cellular network degrees of freedom interference alignment relay sum rate |
| title | Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks |
| title_full | Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks |
| title_fullStr | Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks |
| title_full_unstemmed | Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks |
| title_short | Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks |
| title_sort | spatial interference alignment in relay assisted multi cell multi user networks |
| topic | cellular network degrees of freedom interference alignment relay sum rate |
| url | http://ijict.itrc.ac.ir/article-1-50-en.html |
| work_keys_str_mv | AT aligolestani spatialinterferencealignmentinrelayassistedmulticellmultiusernetworks AT alihbastami spatialinterferencealignmentinrelayassistedmulticellmultiusernetworks AT kamalmohamedpour spatialinterferencealignmentinrelayassistedmulticellmultiusernetworks |