| Presentation | 2008-01-25 An MMSE Channel Estimation Scheme Utilizing the Conjugate Gradient Method Shigenori KINJO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, we propose a new scheme in order to implement an MMSE channel estimator for OFDM systems. We know that the time domain least squares method can be applied for highly accurate impulse response estimation by using a time domain long preamble of an OFDM frame. On the other hand, the impulse response estimation based on the MMSE criterion can achieve superior channel estimation in low SNR conditions; however, it requires prior information such as a covariance matrix of the channel, and the computational complexity for inverse matrix calculation becomes large. In order to overcome these implementation issues, we propose to estimate the statistical values based on the observed information of the channel. In addition, we show that we can suppress the increase of the computational complexity for the matrix inverse calculation by applying the conjugate gradient method while achieving the same performance with the ideal MMSE approach. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM systems / Channel estimation / Least squares method / MMSE channel estimation / Conjugate gradient method |
| Paper # | SIP2007-162,RCS2007-165 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An MMSE Channel Estimation Scheme Utilizing the Conjugate Gradient Method |
| Sub Title (in English) | |
| Keyword(1) | OFDM systems |
| Keyword(2) | Channel estimation |
| Keyword(3) | Least squares method |
| Keyword(4) | MMSE channel estimation |
| Keyword(5) | Conjugate gradient method |
| 1st Author's Name | Shigenori KINJO |
| 1st Author's Affiliation | Japan Coast Guard Academy() |
| Date | 2008-01-25 |
| Paper # | SIP2007-162,RCS2007-165 |
| Volume (vol) | vol.107 |
| Number (no) | 441 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |