| Presentation | 2009-03-04 Performance Analysis of Frequency Offset Estimation in the Presence of DC offset and IQ Imbalance for OFDM Direct Conversion Receivers Mamiko INAMORI, Yukitoshi SANADA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In WLAN receivers, a direct conversion architecture has been implemented in recent years. Though this architecture reduces cost and power consumption, it may suffer from direct current (DC) offset and frequency offset. To reduce the effect of DC offset, a frequency offset estimation scheme with a differential filter for orthogonal frequency division multiplexing (OFDM) direct conversion receivers has been proposed. However, the receiver may also suffer from IQ imbalance, which deteriorates the performance of frequency offset estimation. In this paper, the performance analysis of the frequency offset estimation scheme with the differential filter in the presence of IQ imbalance is derived. The numerical results obtained through computer simulations show that the derived analysis provides close approximation to the performance of the frequency offset estimation scheme. It also clarifies the dependency of the mean square error on the waveform of the preamble symbols, which is caused by IQ imbalance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Direct Conversion / OFDM / DC Offset / Frequency Offset / IQ Imbalance |
| Paper # | SR2008-90 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2009/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Software Radio(SR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Analysis of Frequency Offset Estimation in the Presence of DC offset and IQ Imbalance for OFDM Direct Conversion Receivers |
| Sub Title (in English) | |
| Keyword(1) | Direct Conversion |
| Keyword(2) | OFDM |
| Keyword(3) | DC Offset |
| Keyword(4) | Frequency Offset |
| Keyword(5) | IQ Imbalance |
| 1st Author's Name | Mamiko INAMORI |
| 1st Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University() |
| 2nd Author's Name | Yukitoshi SANADA |
| 2nd Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University |
| Date | 2009-03-04 |
| Paper # | SR2008-90 |
| Volume (vol) | vol.108 |
| Number (no) | 446 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |