| Presentation | 2013-12-18 Performance Analysis of Different Frequency Reuse Schemes Based on Worst Case Signal to Interference Power Ratio in OFDMA Downlink Sherief HASHIMA, Osamu MUTA, Said ELNOUBI, Masoud ALGHONIEMY, Hossam SHALABY, Hiroshi FURUKAWA, Imbaby MAHMOUD, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Orthogonal Frequency Division Multiple Access (OFDMA) based cellular systems face the Inter-Cell Interference (ICI) problem at the cell boundary. Frequency reuse schemes are efficient interference mitigation techniques for such cellular systems. In this paper, we analyze performance of different frequency reuse schemes based on the worst case Signal to Interference power Ratio (SIR) in OFDMA downlink. A closed form expression is derived analytically for the worst SIR, Spectral Efficiency (SE), and outage rate. This analytical approach is utilized to configure a Fractional Frequency Reuse (FFR) solution for downlink of OFDMA based cellular systems. The analysis is performed using two tiers network with uniform user density for different frequency reuse schemes like FFR, Soft Frequency Reuse (SFR), and sectored FFR under different Frequency Reuse Factors (FRFs). The inner radius configuration in frequency reuse schemes depends on equalizing the worst case SIR of both outer and inner edges of the cell. Numerical results show that sectored FFR yields the highest SE and low outage probability. Hence, the sectored FFR is reasonable solution for interference reduction and resource efficiency. For SFR, it is better to use power ratios between 2 and 4 as they achieve reasonable inner radii than others. The analysis results clarify that there is a trade-off aspect between capacity and coverage related to SFR and FFR, respectively. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Signal to Interference Ratio (SIR) / Downlink (DL) / Inter-cell interference (ICI) / Fractional frequency reuse (FFR) / Frequency reuse factor (FRF) / Soft frequency reuse (SFR) / Inner radius |
| Paper # | RCS2013-208 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2013/12/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Radio Communication Systems (RCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Analysis of Different Frequency Reuse Schemes Based on Worst Case Signal to Interference Power Ratio in OFDMA Downlink |
| Sub Title (in English) | |
| Keyword(1) | Signal to Interference Ratio (SIR) |
| Keyword(2) | Downlink (DL) |
| Keyword(3) | Inter-cell interference (ICI) |
| Keyword(4) | Fractional frequency reuse (FFR) |
| Keyword(5) | Frequency reuse factor (FRF) |
| Keyword(6) | Soft frequency reuse (SFR) |
| Keyword(7) | Inner radius |
| 1st Author's Name | Sherief HASHIMA |
| 1st Author's Affiliation | Kyushu University:Egypt-Japan University of Science and Technology (E-JUST):Engineering Department Nuclear research center, Egyptian Atomic Energy Authority() |
| 2nd Author's Name | Osamu MUTA |
| 2nd Author's Affiliation | Kyushu University |
| 3rd Author's Name | Said ELNOUBI |
| 3rd Author's Affiliation | Alexandria University |
| 4th Author's Name | Masoud ALGHONIEMY |
| 4th Author's Affiliation | Alexandria University |
| 5th Author's Name | Hossam SHALABY |
| 5th Author's Affiliation | Egypt-Japan University of Science and Technology (E-JUST) |
| 6th Author's Name | Hiroshi FURUKAWA |
| 6th Author's Affiliation | Kyushu University |
| 7th Author's Name | Imbaby MAHMOUD |
| 7th Author's Affiliation | Engineering Department Nuclear research center, Egyptian Atomic Energy Authority |
| Date | 2013-12-18 |
| Paper # | RCS2013-208 |
| Volume (vol) | vol.113 |
| Number (no) | 361 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |