| Presentation | 2010-03-03 Throughput Evaluation for the Overhead of Sounding Reference Signals in LTE-Advanced Uplink Yosuke AKIMOTO, Toshizo NOGAMI, Kazuyuki SHIMEZAWA, Masayuki ENOMOTO, Hiroshi KATSURAGAWA, Wahoh OH, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In LTE-Advanced uplink, it is considered to introduce closed-loop SU-MIMO (Single User Multiple Input Multiple Output) up to 4 layers with codebook based precoding scheme. Meanwhile, sounding reference signals (SRS) are transmitted from UE (User Equipment) to eNB (Enhanced Node B) to measure the channel state targeting frequency selection scheduling, optimal MCS (Modulation and Coding Schemes) , rank and precoder selection. It is necessary to assign orthogonal SRS resources in time or code domain for each Tx antenna because the receiver should calculate the channel separately. Therefore, SRS overhead would increase as the number of transmit antenna increases, resulting in the performance degradation due to scheduling delay, non-optimal MCS and precoder selection. In this paper, we evaluate the degradation numerically and propose that enlarging the SRS transmit interval is appropriate to minimize the performance degradation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-Advanced / Uplink / Single User MIMO / SRS |
| Paper # | RCS2009-280 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2010/2/24(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) | Throughput Evaluation for the Overhead of Sounding Reference Signals in LTE-Advanced Uplink |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | Uplink |
| Keyword(3) | Single User MIMO |
| Keyword(4) | SRS |
| 1st Author's Name | Yosuke AKIMOTO |
| 1st Author's Affiliation | Corporate Research and Development Group, Sharp Corporation() |
| 2nd Author's Name | Toshizo NOGAMI |
| 2nd Author's Affiliation | Corporate Research and Development Group, Sharp Corporation |
| 3rd Author's Name | Kazuyuki SHIMEZAWA |
| 3rd Author's Affiliation | Corporate Research and Development Group, Sharp Corporation |
| 4th Author's Name | Masayuki ENOMOTO |
| 4th Author's Affiliation | Corporate Research and Development Group, Sharp Corporation |
| 5th Author's Name | Hiroshi KATSURAGAWA |
| 5th Author's Affiliation | Corporate Research and Development Group, Sharp Corporation |
| 6th Author's Name | Wahoh OH |
| 6th Author's Affiliation | Corporate Research and Development Group, Sharp Corporation |
| Date | 2010-03-03 |
| Paper # | RCS2009-280 |
| Volume (vol) | vol.109 |
| Number (no) | 440 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |