| Presentation | 2006-08-31 Field Experiments on 1-Gbps High-Speed Packet Transmission Using MIMO Multiplexing with Cross-Polarized Antennas Hidekazu Taoka, Ki Dai, Kenichi Higuchi, Mamoru Sawahashi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents field experimental results on real-time packet transmission of greater than 1Gbps employing 4-by-4 MIMO multiplexing with cross-polarized antennas both at the transmitter and receiver in the downlink OFDM radio access. We clarify the influences of the fading correlation and the cross-polarization ratio (XPR) among cross-polarized antennas on the measured packet error rate and throughput for MIMO multiplexing using cross-polarized antennas, taking into account the pilot based coherent channel estimation, Maximum Likelihood Detection (MLD)-based signal detection, and adaptive modulation and coding (AMC). Field experiments elucidate that the required average received SINR (Signal-to-Interference plus Noise power Ratio) to achieve 1-Gbps throughput employing crosspolarized antennas is increased by approximately 3-5dB compared to that using space diversity antennas due to the reduction in the received signal power from horizontal antennas and unequal diversity gain between vertical and horizontal polarized antennas. However, it is shown that by using MLD-based signal detection, the measured throughput of greater than 1Gbps is achieved using cross-polarized antennas at the average received SINR of approximately 17-19dB, indicating the effectiveness of the combination of cross-polarized antennas and MLD-based signal detection in MIMO multiplexing. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | downlink / OFDM / MIMO multiplexing / maximum likelihood detection / QR decomposition / cross-polarized antenna |
| Paper # | RCS2006-107 |
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| Committee | RCS |
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| Conference Date | 2006/8/24(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 Experiments on 1-Gbps High-Speed Packet Transmission Using MIMO Multiplexing with Cross-Polarized Antennas |
| Sub Title (in English) | |
| Keyword(1) | downlink |
| Keyword(2) | OFDM |
| Keyword(3) | MIMO multiplexing |
| Keyword(4) | maximum likelihood detection |
| Keyword(5) | QR decomposition |
| Keyword(6) | cross-polarized antenna |
| 1st Author's Name | Hidekazu Taoka |
| 1st Author's Affiliation | Radio Access Network Development Department, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Ki Dai |
| 2nd Author's Affiliation | Radio Access Network Development Department, NTT DoCoMo, Inc. |
| 3rd Author's Name | Kenichi Higuchi |
| 3rd Author's Affiliation | Radio Access Network Development Department, NTT DoCoMo, Inc. |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Department of Electronics and Communication Engineering, Musashi Institute of Technology |
| Date | 2006-08-31 |
| Paper # | RCS2006-107 |
| Volume (vol) | vol.106 |
| Number (no) | 223 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |