| Presentation | 2012-11-16 An efficient channel estimation scheme without feedback in bi-directional two-timeslot OFDM relay systems Yuta KOSHIMIZU, Eiji OKAMOTO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose an efficient channel estimation scheme without feedback from relay in bi-directional two-timeslot orthogonal frequency division multiplexing (OFDM) relay systems. In the proposed channel estimation scheme, Walsh code is used as pilot symbols at the transmitter and the receiver detects and estimates the desired channel coefficients by the correlation processing. The proposed Walsh pilots frame structure could be applied to the sparse frame structure with fewer pilots. Furthermore, since the desired channels are estimated only at the destination nodes, there is no need of channel feedback from relay node which degrades the throughput performance severely. The bit error rate (BER) and throughput performances of the proposed scheme are evaluated by the computer simulations and we show the effectiveness of the proposed scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Channel estimation / Walsh code / OFDM / Relay systems / Network coding / Channel feedback |
| Paper # | RCS2012-172 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2012/11/8(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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) | An efficient channel estimation scheme without feedback in bi-directional two-timeslot OFDM relay systems |
| Sub Title (in English) | |
| Keyword(1) | Channel estimation |
| Keyword(2) | Walsh code |
| Keyword(3) | OFDM |
| Keyword(4) | Relay systems |
| Keyword(5) | Network coding |
| Keyword(6) | Channel feedback |
| 1st Author's Name | Yuta KOSHIMIZU |
| 1st Author's Affiliation | Department of Computer Science and Engineering, Graduate school of Engineering, Nagoya Institute of Technology() |
| 2nd Author's Name | Eiji OKAMOTO |
| 2nd Author's Affiliation | Department of Computer Science and Engineering, Graduate school of Engineering, Nagoya Institute of Technology |
| Date | 2012-11-16 |
| Paper # | RCS2012-172 |
| Volume (vol) | vol.112 |
| Number (no) | 286 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |