| Presentation | 2006-04-21 A Study on Reduction of CSI feedback for Frequency Domain Scheduling in OFDMA/TDD Systems Haruka OBATA, Takashi BABA, Seiichi SAMPEI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a channel state information (CSI) reduction technique for frequency domain scheduling in orthogonal frequency division multiple access/time division duplex (OFDMA/TDD) systems. In the proposed scheme, for reduction of the amount of CSI feedback, channel state for the desired signal in the downlink is estimated by the uplink CSI measurement in the receiver (scheduler) based on channel reciprocity between the downlink and uplink for TDD, i.e. no feedback is done for the desired signal. As for interference and noise power levels, each user (mobile station) feeds back only the maximum value of each clustered frequency component in analog format to reduce the amount of feedback information. Computer simulation confirms that the proposed techniques can reduce the amount of CSI feedback without so much degradation of throughput performances. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDMA/TDD systems / frequency domain scheduling systems / channel reciprocity / CSI feedback |
| Paper # | RCS2006-5 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2006/4/14(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) | A Study on Reduction of CSI feedback for Frequency Domain Scheduling in OFDMA/TDD Systems |
| Sub Title (in English) | |
| Keyword(1) | OFDMA/TDD systems |
| Keyword(2) | frequency domain scheduling systems |
| Keyword(3) | channel reciprocity |
| Keyword(4) | CSI feedback |
| 1st Author's Name | Haruka OBATA |
| 1st Author's Affiliation | Graduate School of Engineering, Osaka University() |
| 2nd Author's Name | Takashi BABA |
| 2nd Author's Affiliation | Graduate School of Engineering, Osaka University |
| 3rd Author's Name | Seiichi SAMPEI |
| 3rd Author's Affiliation | Graduate School of Engineering, Osaka University |
| Date | 2006-04-21 |
| Paper # | RCS2006-5 |
| Volume (vol) | vol.106 |
| Number (no) | 25 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |