Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction
Inter-cell interference has been identified as one of the major challenges of multiple-input–multiple-output (MIMO)-enabled cellular systems. This problem occurs when the same pilot sets are reused across adjacent cells to save bandwidth for data transmission. As a result, so-called pilot contaminat...
| Main Authors: | , , , , , |
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| Format: | Article |
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MDPI
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/87061/ |
| _version_ | 1848860355336339456 |
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| author | Al-hubaishi, Ahmed S. Noordin, Nor Kamariah Sali, Aduwati Subramaniam, Shamala Mansoor, Ali Mohammed Ghaleb, Safwan M. |
| author_facet | Al-hubaishi, Ahmed S. Noordin, Nor Kamariah Sali, Aduwati Subramaniam, Shamala Mansoor, Ali Mohammed Ghaleb, Safwan M. |
| author_sort | Al-hubaishi, Ahmed S. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Inter-cell interference has been identified as one of the major challenges of multiple-input–multiple-output (MIMO)-enabled cellular systems. This problem occurs when the same pilot sets are reused across adjacent cells to save bandwidth for data transmission. As a result, so-called pilot contamination occurs, which cannot be mitigated with an increased number of serving antennas. In this work, we proposed a partial pilot allocation scheme (PPA) to tackle the pilot contamination problem and consequently improve the uplink throughput of users in multi-cell massive MIMO systems. This was achieved by using the large-scale characteristics of the fading channel to keep users with a weak channel condition out of the effect of severe interference during the pilot allocation process. Simulation results showed that the proposed scheme outperformed both smart pilot allocation (SPA) and conventional schemes. In particular, PPA improved the uplink rate by 30% compared to the SPA—a recently proposed schema. Furthermore, our simulation results clearly showed that PPA improved the cumulative distribution function (CDF) of the signal-to-interference-plus-noise ratio (SINR) and uplink throughput. |
| first_indexed | 2025-11-15T12:43:55Z |
| format | Article |
| id | upm-87061 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T12:43:55Z |
| publishDate | 2020 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-870612023-09-13T09:15:53Z http://psasir.upm.edu.my/id/eprint/87061/ Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction Al-hubaishi, Ahmed S. Noordin, Nor Kamariah Sali, Aduwati Subramaniam, Shamala Mansoor, Ali Mohammed Ghaleb, Safwan M. Inter-cell interference has been identified as one of the major challenges of multiple-input–multiple-output (MIMO)-enabled cellular systems. This problem occurs when the same pilot sets are reused across adjacent cells to save bandwidth for data transmission. As a result, so-called pilot contamination occurs, which cannot be mitigated with an increased number of serving antennas. In this work, we proposed a partial pilot allocation scheme (PPA) to tackle the pilot contamination problem and consequently improve the uplink throughput of users in multi-cell massive MIMO systems. This was achieved by using the large-scale characteristics of the fading channel to keep users with a weak channel condition out of the effect of severe interference during the pilot allocation process. Simulation results showed that the proposed scheme outperformed both smart pilot allocation (SPA) and conventional schemes. In particular, PPA improved the uplink rate by 30% compared to the SPA—a recently proposed schema. Furthermore, our simulation results clearly showed that PPA improved the cumulative distribution function (CDF) of the signal-to-interference-plus-noise ratio (SINR) and uplink throughput. MDPI 2020-06-18 Article PeerReviewed Al-hubaishi, Ahmed S. and Noordin, Nor Kamariah and Sali, Aduwati and Subramaniam, Shamala and Mansoor, Ali Mohammed and Ghaleb, Safwan M. (2020) Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction. Energies, 13. pp. 1-19. ISSN 1996-1073 https://www.mdpi.com/1996-1073/13/12/3163 10.3390/en13123163 |
| spellingShingle | Al-hubaishi, Ahmed S. Noordin, Nor Kamariah Sali, Aduwati Subramaniam, Shamala Mansoor, Ali Mohammed Ghaleb, Safwan M. Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction |
| title | Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction |
| title_full | Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction |
| title_fullStr | Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction |
| title_full_unstemmed | Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction |
| title_short | Partial pilot allocation scheme in Multi-Cell Massive MIMO systems for pilot contamination reduction |
| title_sort | partial pilot allocation scheme in multi-cell massive mimo systems for pilot contamination reduction |
| url | http://psasir.upm.edu.my/id/eprint/87061/ http://psasir.upm.edu.my/id/eprint/87061/ http://psasir.upm.edu.my/id/eprint/87061/ |