| Presentation | 2005-08-25 Investigations on Optimum Sub-carrier Spacing for OFDM Radio Access in Evolved UTRA Downlink Naoto Ohkubo, Yoshihisa Kishiyama, Kenichi Higuchi, Hiroyuki Atarashi, Mamoru Sawahashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper investigates the optimum sub-carrier spacing for OFDM radio access in downlink considering the tradeoff relationship between the overhead loss due to the insertion of the cyclic prefix (CP) and the robustness against the inter-carrier interference (ICI) due to the phase noise and the Doppler shift. Simulation results elucidate that the optimum sub-carrier spacing is approximately 11 to 15kHz for OFDM radio access in Evolved UTRA downlink, in order to suppress the throughput degradation by less than 5% compared to the case with a sub-carrier spacing of 6.65kHz, which achieves the largest peak throughput among the investigated sub-carrier spacing in a low mobility environment as a major deployment scenario, while supporting the moving speed of up to 350km/h at a 2.6-GHz carrier frequency which corresponds to the fading maximum Doppler frequency of 843Hz in order to suppress the throughput degradation by less than 8% compared to the case with a sub-carrier spacing of 13.86kHz, which achieves the largest peak throughput among the investigated sub-carrier spacing in a high-mobility environment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Evolved UTRA / OFDM / sub-carrier spacing / cyclic prefix / Doppler shift |
| Paper # | RCS2005-69 |
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| Committee | RCS |
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| Conference Date | 2005/8/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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) | Investigations on Optimum Sub-carrier Spacing for OFDM Radio Access in Evolved UTRA Downlink |
| Sub Title (in English) | |
| Keyword(1) | Evolved UTRA |
| Keyword(2) | OFDM |
| Keyword(3) | sub-carrier spacing |
| Keyword(4) | cyclic prefix |
| Keyword(5) | Doppler shift |
| 1st Author's Name | Naoto Ohkubo |
| 1st Author's Affiliation | IP Radio Network Development Department, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Yoshihisa Kishiyama |
| 2nd Author's Affiliation | IP Radio Network Development Department, NTT DoCoMo, Inc. |
| 3rd Author's Name | Kenichi Higuchi |
| 3rd Author's Affiliation | IP Radio Network Development Department, NTT DoCoMo, Inc. |
| 4th Author's Name | Hiroyuki Atarashi |
| 4th Author's Affiliation | IP Radio Network Development Department, NTT DoCoMo, Inc. |
| 5th Author's Name | Mamoru Sawahashi |
| 5th Author's Affiliation | IP Radio Network Development Department, NTT DoCoMo, Inc. |
| Date | 2005-08-25 |
| Paper # | RCS2005-69 |
| Volume (vol) | vol.105 |
| Number (no) | 240 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |