| Presentation | 2005-11-18 Bit Error Rate Analysis of OFDM with delay time domain channel estimation Richol KU, Shinsuke TAKAOKA, Fumiyuki ADACHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Accurate channel estimation is necessary for coherent detection of the OFDM signals. The channel estimation using delay time windowing is one of promising methods. In the channel estimation using the delay time domain windowing, the pilot modulation is removed from each subcarrier to estimate the channel gain and then using the IFFT, the channel impulse response is estimated. Assuming the finite channel impulse response, the noise in the channel estimation can be reduced by truncating the estimated channel impulse response. To the best of authors' knowledge, the bit error rate(BER) performance achievable with the channel estimation using delay time domain windowing was evaluated by computer simulation only. There has been no theoretical analysis of the BER performance. The objective of this paper is to develop the theoretical foundation to the pilot consisted channel estimation using the delay time domain windowing. The theoretical BER performance is derived when the pilot assisted channel estimation using delay time domain windowing is jointly used with interpolation and decision feedback. This paper discusses the impacts of the width of delay time windowing, multipath channel decay factor, the maximum Doppler frequency. Finally the adequacy of theoretical analysis is demonstrated by computer simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / Channel estimation / Impulse response / Polynomial interpolation / Decision feedback |
| Paper # | RCS2005-116 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2005/11/10(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) | Bit Error Rate Analysis of OFDM with delay time domain channel estimation |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Channel estimation |
| Keyword(3) | Impulse response |
| Keyword(4) | Polynomial interpolation |
| Keyword(5) | Decision feedback |
| 1st Author's Name | Richol KU |
| 1st Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Shinsuke TAKAOKA |
| 2nd Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Fumiyuki ADACHI |
| 3rd Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2005-11-18 |
| Paper # | RCS2005-116 |
| Volume (vol) | vol.105 |
| Number (no) | 411 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |