| Presentation | 2008-06-12 Irreducible Form of AM Criterion for Unconditional ML Estimation of DOA Haihua CHEN, Masakiyo SUZUKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper addresses the issue of numerical unstability of Alternating Minimization (AM) criterion in Unconditional Maximum Likelihood (UML) estimation of Directions-of-Arrival (DOA). First we show the definition of the exact UML estimation and brief description of the AM method to solve the exact UML estimation. The AM algorithm becomes numerical unstable, when more than one direction parameters are going to have an identical value. It is caused by the fact that the UML criterion with duplicated directions is indefinite. This paper derives efficient AM (EAM) algorithm by dividing the UML criterion into two components. One depends on a signal variable parameter and the other does not. Then applying the condition of the uniform linear array of sensors, an irreducible form of the criterion of EAM algorithm is derived. We call it Irreducible AM (IAM) algorithm. Finally, simulation results are shown to demonstrate that IAM algorithm is numerical stable and efficient. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DOA finding / Stochastic signal model / ML / AM / Numerical unstability / Irreducible from |
| Paper # | SIS2008-7 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2008/6/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Smart Info-Media Systems (SIS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Irreducible Form of AM Criterion for Unconditional ML Estimation of DOA |
| Sub Title (in English) | |
| Keyword(1) | DOA finding |
| Keyword(2) | Stochastic signal model |
| Keyword(3) | ML |
| Keyword(4) | AM |
| Keyword(5) | Numerical unstability |
| Keyword(6) | Irreducible from |
| 1st Author's Name | Haihua CHEN |
| 1st Author's Affiliation | Graduate School of Engineering, Kitami Institute of Technology() |
| 2nd Author's Name | Masakiyo SUZUKI |
| 2nd Author's Affiliation | Graduate School of Engineering, Kitami Institute of Technology |
| Date | 2008-06-12 |
| Paper # | SIS2008-7 |
| Volume (vol) | vol.108 |
| Number (no) | 85 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |