2013 Fiscal Year Final Research Report
Development of Sparse Channel Estimation Methods Without Pilot Symbols and Its Applications
| Project/Area Number |
23560434
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 通信路推定 / スパース通信路 / 圧縮センシング / 移動通信 / 高速無線伝送 / ブラインド推定 |
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| Research Abstract |
In this work, we considered the following issues concerning sparse channel estimation methods without pilot symbols: (1) sparse channel estimation in OFDM transmissions, (2) sparse channel estimation in single-carrier transmissions, (3) time-variant sparse OFDM channel estimation, and (4) extension to the case with a few pilot symbols. For (1) and (2), we proposed non-zero tap detection methods without pilot symbols, and showed the effectiveness of the channel estimation methods using the detection results. For (3), we showed that time-variant channels can be efficiently estimated by modeling as group-sparse channels. For (4), we considered a semi-blind method, and examined our future directions.
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