| Presentation | 2002/1/19 Improving Convergence Characteristics of MMSE Adaptive Array Utilizing Guard Interval for the OFDM Systems Satoshi HORI, Nobuyoshi KIKUMA, Naoki INAGAKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The performance of OFDM systems suffer from serious degradation due to incidence of multipath waves with delay times longer than guard interval and Doppler-shifted waves. To combat this problem, many kinds of adaptive array antenna systems have been proposed which suppress the unwanted waves. This paper considers the possibilities of improving the convergence characteristics of the MMSE adaptive array that utilizes the structure of guard interval of OFDM and thus features a blind processing. First, the optimum number of sample data is investigated to obtain the optimum weights through the SMI algorithm. Then the new algorithm based on SMI is proposed which employs the error signal for weighting the sample data. It automatically varies the substantial number of sample data depending on the delay time of the arriving waves. To clarify the effectiveness of the proposed algorithm, the convergence characteristics are evaluated using the computer simulation. The results show good performance of the proposed algorithm in convergence characteristics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 0FDM / adaptive array antenna / blind processing / guard interval / error signal / MMSE |
| Paper # | A・P 2001-195 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2002/1/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improving Convergence Characteristics of MMSE Adaptive Array Utilizing Guard Interval for the OFDM Systems |
| Sub Title (in English) | |
| Keyword(1) | 0FDM |
| Keyword(2) | adaptive array antenna |
| Keyword(3) | blind processing |
| Keyword(4) | guard interval |
| Keyword(5) | error signal |
| Keyword(6) | MMSE |
| 1st Author's Name | Satoshi HORI |
| 1st Author's Affiliation | Kojima R&D Center, Kojima Press Industry Co., Ltd.() |
| 2nd Author's Name | Nobuyoshi KIKUMA |
| 2nd Author's Affiliation | Department of Electrical and Computer Engineering, Nagoya Institute of Technology |
| 3rd Author's Name | Naoki INAGAKI |
| 3rd Author's Affiliation | Department of Electrical and Computer Engineering, Nagoya Institute of Technology |
| Date | 2002/1/19 |
| Paper # | A・P 2001-195 |
| Volume (vol) | vol.101 |
| Number (no) | 607 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |