| Presentation | 2014-07-31 A Study on Interference Mitigation Framework Based on Interference Alignment for Femtocell-Macrocell Two Tier Cellular Systems Mohamed Rihan, Maha Elsabrouty, Osamu Muta, Hiroshi Furukawa, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Femtocells have been considered as a promising technology to provide better indoor coverage and spatial reuse gains in the last few years. Additionally, it can be employed in mobile data offloading scenarios in order to decrease the overburden increasing traffic carried by ordinary macrocell basestations (MBSs). Unfortunately, the interference in such two tier cellular systems represent a great technical challenge that must be avoided. In this paper, we propose an interference mitigation approach that models the femtocell-macrocell two tier cellular system as a cognitive radio (CR) system, where spectrum resources of two systems are efficiently shared without affecting each other's operation. In addition, we propose a restricted waterfilling algorithm that makes the MBS to release part of its eigenmodes to its associated femtocell basestations (FBSs) to do their transmissions even at high signal to noise power ratio regimes. The simulation results show that the proposed approach provides an improved sum rate for the femtocell users compared to the conventional interference alignment techniques, like, the leakage minimization approach and the nuclear norm based rank constraint rank minimization approach. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Interference Alignment / Femtocell / Macrocell / Multi-Input Multi-Output (MIMO) / Cognitive Radio / Iterative Reweighted Least Squares (IRLS) |
| Paper # | RCC2014-29,NS2014-49,RCS2014-101,SR2014-30,ASN2014-48 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2014/7/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Smart Radio(SR) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Interference Mitigation Framework Based on Interference Alignment for Femtocell-Macrocell Two Tier Cellular Systems |
| Sub Title (in English) | |
| Keyword(1) | Interference Alignment |
| Keyword(2) | Femtocell |
| Keyword(3) | Macrocell |
| Keyword(4) | Multi-Input Multi-Output (MIMO) |
| Keyword(5) | Cognitive Radio |
| Keyword(6) | Iterative Reweighted Least Squares (IRLS) |
| 1st Author's Name | Mohamed Rihan |
| 1st Author's Affiliation | Kyushu University:Egypt-Japan University of Science & Technology() |
| 2nd Author's Name | Maha Elsabrouty |
| 2nd Author's Affiliation | Egypt-Japan University of Science & Technology |
| 3rd Author's Name | Osamu Muta |
| 3rd Author's Affiliation | Kyushu University |
| 4th Author's Name | Hiroshi Furukawa |
| 4th Author's Affiliation | Kyushu University |
| Date | 2014-07-31 |
| Paper # | RCC2014-29,NS2014-49,RCS2014-101,SR2014-30,ASN2014-48 |
| Volume (vol) | vol.114 |
| Number (no) | 165 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |