| Presentation | 2012-06-21 Investigation on Link Performance Modeling of Interference Rejection Combining Receiver for System Level Evaluation in LTE-Advanced Downlink Yousuke SANO, Yusuke OHWATARI, Nobuhiko MIKI, Akihito MORIMOTO, Yukihiko OKUMURA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The interference rejection combining (IRC) receiver, which can suppress inter-cell interference, is effective in improving the cell edge user throughput. In a system performance evaluation, the link performance modeling of the IRC receiver, i.e., the BLock Error Rate (BLER) after IRC reception including the covariance matrix and channel estimation errors, is very important in evaluating the actual performance of the IRC receiver in the system level simulation. This is because these errors affect the suppression of the interference signals for the IRC receiver. This paper investigates and proposes IRC receiver modeling scheme focusing on the covariance matrix estimation error. As the modeling scheme for this estimation error, we propose a scheme that averages the conventional approximation using the complex Wishart distribution in the frequency domain to address issues that arise in a frequency selective fading channel. The results of simulations assuming LTE-Advanced downlink with two transmitter and two receiver antenna branches show that the proposed modeling scheme for the covariance matrix estimation error accurately approximate the performance of the realistic IRC receiver, which estimates the covariance matrix based on the demodulation reference signal (DM-RS), even in a frequency selective fading channel. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-Advanced / interference rejection combining / inter-cell interference / system level simulation / link performance modeling |
| Paper # | RCS2012-57 |
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| Committee | RCS |
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| Conference Date | 2012/6/14(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 Link Performance Modeling of Interference Rejection Combining Receiver for System Level Evaluation in LTE-Advanced Downlink |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | interference rejection combining |
| Keyword(3) | inter-cell interference |
| Keyword(4) | system level simulation |
| Keyword(5) | link performance modeling |
| 1st Author's Name | Yousuke SANO |
| 1st Author's Affiliation | NTT DOCOMO, INC.() |
| 2nd Author's Name | Yusuke OHWATARI |
| 2nd Author's Affiliation | NTT DOCOMO, INC. |
| 3rd Author's Name | Nobuhiko MIKI |
| 3rd Author's Affiliation | NTT DOCOMO, INC. |
| 4th Author's Name | Akihito MORIMOTO |
| 4th Author's Affiliation | NTT DOCOMO, INC. |
| 5th Author's Name | Yukihiko OKUMURA |
| 5th Author's Affiliation | NTT DOCOMO, INC. |
| Date | 2012-06-21 |
| Paper # | RCS2012-57 |
| Volume (vol) | vol.112 |
| Number (no) | 89 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |