| Presentation | 2007-05-18 A Macro-Diversity Scheme using Group-wise Scrambling for OFDM Cellular System Koji AKITA, Ren SAKATA, Noritaka DEGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Broadcast services in OFDM cellular system provide the ability to transmit the same information from multiple base stations. For the services, Cyclic Delay Diversity (CDD) is one of the promising diversity schemes, since it can be easily applied to any number of base stations. However, there is a problem in that CDD increases frequency selectivity and makes channel estimation more difficult. In this paper, we propose a new diversity scheme that can overcome the problem of CDD. In the proposed scheme, subcarriers are divided into several subcarrier-groups. By rotating phase of each subcarrier-group independently among base stations, the frequency selectivity of the whole band is increased as in the case of CDD. On the other hand, unlike in the case of CDD, the frequency selectivity within each subcarrier-group is not changed. Utilizing this property, channel estimation carried out within each subcarrier-group can avoid the problem of CDD. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | diversity / CDD / broadcast / OFDM / cellular system |
| Paper # | RCS2007-6 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2007/5/10(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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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 Macro-Diversity Scheme using Group-wise Scrambling for OFDM Cellular System |
| Sub Title (in English) | |
| Keyword(1) | diversity |
| Keyword(2) | CDD |
| Keyword(3) | broadcast |
| Keyword(4) | OFDM |
| Keyword(5) | cellular system |
| 1st Author's Name | Koji AKITA |
| 1st Author's Affiliation | Corporate Research and Development Center, Toshiba Corp.() |
| 2nd Author's Name | Ren SAKATA |
| 2nd Author's Affiliation | Corporate Research and Development Center, Toshiba Corp. |
| 3rd Author's Name | Noritaka DEGUCHI |
| 3rd Author's Affiliation | Corporate Research and Development Center, Toshiba Corp. |
| Date | 2007-05-18 |
| Paper # | RCS2007-6 |
| Volume (vol) | vol.107 |
| Number (no) | 38 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |