| Presentation | 2009-07-17 A Proposal of Frequency Selective Offset Cell to Reduce Cell Edge Problem Kenzaburo FUJISHIMA, Satoshi TAMAKI, May TAKADA, Katsuhiko TSUNEHARA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Toward broadband cellular systems, a system for improving cell edge throughput with low complexity is proposed. Simultaneous improvement of both SNR and SIR seems to be necessary for enhancement of cell edge throughput. To improve the SNR, a system that remote radio units (RRU) are placed densely is assumed for reducing propagation loss. Baseband units (BBU) are put at one place and connections between BBUs and RRUs are realized by optical fibers. To improve the SIR, a frequency selective switch shall be inserted between BBUs and RRUs, and different RRU clusters among subbands (Frequency Selective Offset Cells) are generated. When each UE selects a subband performing the preferred RRU cluster, influences of inter-cell interferences can be practically reduced. In each RRU cluster, conventional signal processing such as a single user MIMO is applied for low complexity. According to analyses based on Shannon capacity, we confirmed the proposed system is effective to achieve the improvement of cell edge throughput. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IMT-Advanced / Cellular system / Cell edge / BBU / RRU / Cluster |
| Paper # | RCS2009-65 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2009/7/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Proposal of Frequency Selective Offset Cell to Reduce Cell Edge Problem |
| Sub Title (in English) | |
| Keyword(1) | IMT-Advanced |
| Keyword(2) | Cellular system |
| Keyword(3) | Cell edge |
| Keyword(4) | BBU |
| Keyword(5) | RRU |
| Keyword(6) | Cluster |
| 1st Author's Name | Kenzaburo FUJISHIMA |
| 1st Author's Affiliation | Central Research Laboratory, Hitachi, Ltd.() |
| 2nd Author's Name | Satoshi TAMAKI |
| 2nd Author's Affiliation | Central Research Laboratory, Hitachi, Ltd. |
| 3rd Author's Name | May TAKADA |
| 3rd Author's Affiliation | Central Research Laboratory, Hitachi, Ltd. |
| 4th Author's Name | Katsuhiko TSUNEHARA |
| 4th Author's Affiliation | Central Research Laboratory, Hitachi, Ltd. |
| Date | 2009-07-17 |
| Paper # | RCS2009-65 |
| Volume (vol) | vol.109 |
| Number (no) | 130 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |