| Presentation | 2008-08-27 Self-IQ-imbalance Compensation Scheme without Reference Modulator nor Demodulator Mariko SAITO, Hiroyuki KAMATA, Kei SAKAGUCHI, Kiyomichi ARAKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | There are imperfections in analog RF circuits which are serious obstacles for the realization of high data rate transmission. We focus on IQ imbalance in a quadrature modulator and demodulator, which is one such imperfection. In conventional IQ imbalance compensation schemes, extra hardware for reference modulator and demodulator, extra training signals in data frame, or iterative blind estimation schemes are needed. This paper proposes a new self-IQ-imbalance compensation technique without such extra hardware nor signals. The proposed method can estimate IQ imbalance by connecting the modulator and demodulator directly via a phase shifter. Then the IQ imbalance parameters can be estimated analytically by using feedback signals with two different phase rotations. Validity of the proposed scheme is confirmed by an experiment using RF fading simulator hardware. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IQ imbalance / DC offset / Self-estimation / Self-compensation / Experimental verification |
| Paper # | RCS2008-70 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/8/20(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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) | Self-IQ-imbalance Compensation Scheme without Reference Modulator nor Demodulator |
| Sub Title (in English) | |
| Keyword(1) | IQ imbalance |
| Keyword(2) | DC offset |
| Keyword(3) | Self-estimation |
| Keyword(4) | Self-compensation |
| Keyword(5) | Experimental verification |
| 1st Author's Name | Mariko SAITO |
| 1st Author's Affiliation | Tokyo Institute of Technology, Graduate School of Information Science and Engineering() |
| 2nd Author's Name | Hiroyuki KAMATA |
| 2nd Author's Affiliation | Tokyo Institute of Technology, Graduate School of Information Science and Engineering |
| 3rd Author's Name | Kei SAKAGUCHI |
| 3rd Author's Affiliation | Tokyo Institute of Technology, Graduate School of Information Science and Engineering |
| 4th Author's Name | Kiyomichi ARAKI |
| 4th Author's Affiliation | Tokyo Institute of Technology, Graduate School of Information Science and Engineering |
| Date | 2008-08-27 |
| Paper # | RCS2008-70 |
| Volume (vol) | vol.108 |
| Number (no) | 188 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |