| Presentation | 2009-12-08 Composition of Blind Type Adaptive Filter Based on Signal Subspace for DS/CDMA Systems with Antenna Array Tomokazu TAKAHASHI, Tsuyoshi ICHIKAWA, Kohei OTAKE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In DS/CDMA communication systems, to improve the transmission efficiency, a blind or non-pilot-aided adaptive MMSE receiver based on the signal subspace has been proposed. The blind type receiver, however, has a problem of a severe deterioration of the BER characteristics due to low channel estimation accuracy, compared with the pilot-aided type. In order to combat this problem, we propose such an adaptive filter that the components in the orthogonal complement of the signal subspace are filtered out by using the so-called projection method, and thus both the decrease in processing dimension and improvement in BER performance are achieved. In this paper, we also conduct comparative simulations between the proposed filter and the reduced-rank filter which was proposed by us to deal with the same problem, and the effectiveness of the proposed filter is shown in terms of BER characteristics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DS/CDMA / signal subspace / blind / projection method |
| Paper # | WBS2009-36 |
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| Committee | WBS |
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| Conference Date | 2009/12/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Wideband System(WBS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Composition of Blind Type Adaptive Filter Based on Signal Subspace for DS/CDMA Systems with Antenna Array |
| Sub Title (in English) | |
| Keyword(1) | DS/CDMA |
| Keyword(2) | signal subspace |
| Keyword(3) | blind |
| Keyword(4) | projection method |
| 1st Author's Name | Tomokazu TAKAHASHI |
| 1st Author's Affiliation | Faculty of Engineering, Hosei University() |
| 2nd Author's Name | Tsuyoshi ICHIKAWA |
| 2nd Author's Affiliation | Tokyo Metropolitan Police Info-Communications Department |
| 3rd Author's Name | Kohei OTAKE |
| 3rd Author's Affiliation | Faculty of Engineering, Hosei University |
| Date | 2009-12-08 |
| Paper # | WBS2009-36 |
| Volume (vol) | vol.109 |
| Number (no) | 324 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |