| Presentation | 2010-11-11 Performance Evaluation of Closed-Loop SU-MIMO Using Real-Time Baseband Experimental Equipment for LTE-Advanced Uplink Shinpei Yasukawa, Teruo Kawamura, Yoshihisa Kishiyama, Hidekazu Taoka, Takehiro Nakamura, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents the throughput performance evaluation of closed-loop single-user MIMO transmission in the uplink single carrier (SC)-FDMA radio access using real-time baseband experimental equipment for LTE-Advanced. The throughput evaluations include the influence of estimation accuracy of MIMO channel matrix which is derived from the uplink sounding reference signal (SRS) and used for the precoding vector (PV) selection and adaptive modulation and coding (AMC) at the base station. The evaluation results elucidate that the block error rate for Rank-1 closed-loop transmitter diversity is not so sensitive against the estimation accuracy of MIMO channels using SRS because the phase resolution of PV is relatively rough in the case of two transmitter antennas. Moreover, the throughput of 150 Mbps is achieved by 2-by-2 spatial multiplexing. However, the throughput performance employing AMC is clearly degraded by approximately 20% when the transmission power of SRS is reduced by -10 dB compared to that of data channel. As a result, it is clarified that the estimation accuracy of MIMO channels using SRS much influences AMC rather than PV selection for closed-loop MIMO transmission. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-Advanced / uplink / single carrier / close-loop type transmit diversity / MIMO multiplexing |
| Paper # | RCS2010-147 |
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| Committee | RCS |
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| Conference Date | 2010/11/4(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) | Performance Evaluation of Closed-Loop SU-MIMO Using Real-Time Baseband Experimental Equipment for LTE-Advanced Uplink |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | uplink |
| Keyword(3) | single carrier |
| Keyword(4) | close-loop type transmit diversity |
| Keyword(5) | MIMO multiplexing |
| 1st Author's Name | Shinpei Yasukawa |
| 1st Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC.() |
| 2nd Author's Name | Teruo Kawamura |
| 2nd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 3rd Author's Name | Yoshihisa Kishiyama |
| 3rd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 4th Author's Name | Hidekazu Taoka |
| 4th Author's Affiliation | DOCOMO Communications Laboratories Europe GmbH |
| 5th Author's Name | Takehiro Nakamura |
| 5th Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| Date | 2010-11-11 |
| Paper # | RCS2010-147 |
| Volume (vol) | vol.110 |
| Number (no) | 268 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |