| Presentation | 2010-10-27 Investigation on Improvement of Channel Estimation Accuracy with Data Signal Muting for Downlink Coordinated Multiple-Point Transmission and Reception in LTE-Advanced Yusuke OHWATARI, Nobuhiko MIKI, Tetsushi ABE, Satoshi NAGATA, Yukihiko OKUMURA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Accurate channel estimation for multiple cells is essential in downlink coordinated multi-point (COMP) transmission/reception. Therefore, this paper investigates a technique to improve the channel estimation for downlink CoMP in LTE-Advanced. Particularly, the performance of the data signal muting, i.e., muting data signals that collide with the channel state information reference signal (CSI-RS) of the neighboring cell, is evaluated considering various CoMP schemes and scenarios. The simulation results show that data signal muting is effective in improving the channel estimation accuracy, and consequently the throughput performance especially for sets of user equipment at the cell boundary when CoMP is employed. Furthermore, the tradeoff relation between accurate channel estimation by muting larger amount of data signals and high peak data rate, i.e., low overhead, is also investigated. It is shown that when the number of coordinated cells is set to three, the improvement in performance is almost saturated when the data signals that collide with the CSI-RSs of the other two coordinated cells are muted in the synchronized network. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-Advanced / Coordinated multipoint transmission/reception / channel state information reference signal / data signal muting |
| Paper # | RCS2010-112 |
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| Committee | RCS |
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| Conference Date | 2010/10/20(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) | Investigation on Improvement of Channel Estimation Accuracy with Data Signal Muting for Downlink Coordinated Multiple-Point Transmission and Reception in LTE-Advanced |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | Coordinated multipoint transmission/reception |
| Keyword(3) | channel state information reference signal |
| Keyword(4) | data signal muting |
| 1st Author's Name | Yusuke OHWATARI |
| 1st Author's Affiliation | NTT DOCOMO, INC.() |
| 2nd Author's Name | Nobuhiko MIKI |
| 2nd Author's Affiliation | NTT DOCOMO, INC. |
| 3rd Author's Name | Tetsushi ABE |
| 3rd Author's Affiliation | NTT DOCOMO, INC. |
| 4th Author's Name | Satoshi NAGATA |
| 4th Author's Affiliation | NTT DOCOMO, INC. |
| 5th Author's Name | Yukihiko OKUMURA |
| 5th Author's Affiliation | NTT DOCOMO, INC. |
| Date | 2010-10-27 |
| Paper # | RCS2010-112 |
| Volume (vol) | vol.110 |
| Number (no) | 251 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |