| Presentation | 2012-01-26 Pre-FFT Wideband Adaptive Antenna Array for Asynchronous Interference Suppression in OFDM Systems Shinji TAKENAKA, Kazunori HAYASHI, Megumi KANEKO, Hideaki SAKAI, Riichi KUDO, Tomoki MURAKAMI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a co-channel interference suppression scheme for OFDM (Orthogonal Frequency Division Multiplexing) systems using pre-FFT (Fast Fourier Transform) type adaptive antenna array at the receiver, where the FFT timing of desired and interfering OFDM symbols are not synchronized (i.e., asynchronous co-channel interference). The proposed method controls the weights of the antenna array so as to minimize the noise power at the output of the frequency domain equalizer assuming zero forcing criterion under the constraint that the power of the asynchronous co-channel interference at the array output is zero. Moreover, we employ a wideband adaptive antenna array, which has a tapped delay line at each element, to cope with multiple co-channel interference signals without increasing the number of antenna elements. We evaluate the BER (bit error rate) performance of the proposed scheme and show the effectiveness of the proposed approach. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Adaptive Array / Asynchronous Co-channel Interference / OFDM / pre-FFT Type Array |
| Paper # | SIP2011-90,RCS2011-279 |
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| Conference Information | |
| Committee | SIP |
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| Conference Date | 2012/1/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Signal Processing (SIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Pre-FFT Wideband Adaptive Antenna Array for Asynchronous Interference Suppression in OFDM Systems |
| Sub Title (in English) | |
| Keyword(1) | Adaptive Array |
| Keyword(2) | Asynchronous Co-channel Interference |
| Keyword(3) | OFDM |
| Keyword(4) | pre-FFT Type Array |
| 1st Author's Name | Shinji TAKENAKA |
| 1st Author's Affiliation | Graduate School of Informatics, Kyoto University() |
| 2nd Author's Name | Kazunori HAYASHI |
| 2nd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 3rd Author's Name | Megumi KANEKO |
| 3rd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 4th Author's Name | Hideaki SAKAI |
| 4th Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 5th Author's Name | Riichi KUDO |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 6th Author's Name | Tomoki MURAKAMI |
| 6th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2012-01-26 |
| Paper # | SIP2011-90,RCS2011-279 |
| Volume (vol) | vol.111 |
| Number (no) | 403 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |