| Presentation | 2009-12-18 Field Trial of Mobile Broadband Wireless Access in Sendai Area : Feasibility Study of Uplink and Downlink Transmission with QAM Hiroshi Oguma, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have carried out mobile broadband wireless access (MBWA) system field trials in an urban area of Sendai city. In the trials, we adopted Fast Low-latency Access with Seamless Hand-off Orthogonal Frequency Division Multiplexing (FLASH-OFDM) as an air interface. FLASH-OFDM uses Orthogonal Frequency Division Multiple Access (OFDMA), which is one of attractive candidates for multiple access schemes in the next generation mobile communication systems. This paper discusses the measured downlink throughput performances when the maximum modulation level is up to 256 Quadrature Amplitude Modulation (QAM). The measured results show that 64 QAM mainly contributes the median downlink throughput, and 256 QAM is attractive at a maximum throughput point of view. This paper also discusses the uplink throughput performances. The measured results show that 16 QAM mainly contributes the median uplink throughput. The measured results of the received signal levels obtained in the field trials suggest that 64 QAM can be used in 30% of the field trial area. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDMA / Maximum modulation / 256QAM / 64QAM |
| Paper # | RCS2009-193 |
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| Committee | RCS |
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| Conference Date | 2009/12/10(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) | Field Trial of Mobile Broadband Wireless Access in Sendai Area : Feasibility Study of Uplink and Downlink Transmission with QAM |
| Sub Title (in English) | |
| Keyword(1) | OFDMA |
| Keyword(2) | Maximum modulation |
| Keyword(3) | 256QAM |
| Keyword(4) | 64QAM |
| 1st Author's Name | Hiroshi Oguma |
| 1st Author's Affiliation | Research Institute of Electrical Communication, Tohoku University:Industrial Technology Institute of Miyagi Prefecture Government() |
| 2nd Author's Name | Noboru Izuka |
| 2nd Author's Affiliation | SoftBank Telecom Corp. |
| 3rd Author's Name | Yasuyoshi Asano |
| 3rd Author's Affiliation | SoftBank Telecom Corp. |
| 4th Author's Name | Yoshiharu Yamazaki |
| 4th Author's Affiliation | SoftBank Telecom Corp. |
| 5th Author's Name | Suguru Kameda |
| 5th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 6th Author's Name | Tadashi Takagi |
| 6th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 7th Author's Name | Kazuo Tsubouchi |
| 7th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| Date | 2009-12-18 |
| Paper # | RCS2009-193 |
| Volume (vol) | vol.109 |
| Number (no) | 341 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |