| Presentation | 2007-11-08 Study on Delay Wave Canceller and Application to OFDMA System Yosuke HARADA, Shogo YAMADA, Hisato IWAI, Hideichi SASAOKA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | There has been a increasing interest in the OFDM system as a broadband transmission scheme under the limited frequency band. In the OFDM system, the transmission performance deteriorates when the delay of the delayed waves is longer than the guard interval period. In order to solve the problem, we have proposed a delayed-wave canceller where no guard interval is necessary and examined the performance of the proposed system by computer simulations. In this paper, we propose the multi-user interference canceller applying the principal of the delayed wave canceller and examine the performance of the asynchronous 2 users up-link OFDMA system. This system uses symbol-by-symbol demodulation and a decision feedback canceller. The results of the simulations indicate the proposed canceller prevents the degradation of the transmission performance by multi-user interference. In addition, the canceller can perfectly remove the interference if the guard band is applied in channel border between the subcar ier allocation. Moreover, we confirmed that the canceller can remove the interference regardless of the received power from each users. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / Delayed waves / Symbol-by-symbol demodulation / Decision feedback canceller / asynchronous OFDMA |
| Paper # | RCS2007-101 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2007/11/1(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) | Study on Delay Wave Canceller and Application to OFDMA System |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Delayed waves |
| Keyword(3) | Symbol-by-symbol demodulation |
| Keyword(4) | Decision feedback canceller |
| Keyword(5) | asynchronous OFDMA |
| 1st Author's Name | Yosuke HARADA |
| 1st Author's Affiliation | Graduate School of Engineering, Doshisha University() |
| 2nd Author's Name | Shogo YAMADA |
| 2nd Author's Affiliation | Graduate School of Engineering, Doshisha University |
| 3rd Author's Name | Hisato IWAI |
| 3rd Author's Affiliation | Graduate School of Engineering, Doshisha University |
| 4th Author's Name | Hideichi SASAOKA |
| 4th Author's Affiliation | Graduate School of Engineering, Doshisha University |
| Date | 2007-11-08 |
| Paper # | RCS2007-101 |
| Volume (vol) | vol.107 |
| Number (no) | 306 |
| Page | pp.pp.- |
| #Pages | 6 |
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