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| 講演名 | 2012-01-27 09:25 Low Complexity Channel Estimation for MIMO-Constant Envelope Modulation ○Ehab Mahmoud Mohamed・Osamu Muta・Hiroshi Furukawa（Kyushu Univ.）  SIP2011-96 RCS2011-285 |
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| 抄録 | （和） | MIMO-Constant Envelope Modulation, MIMO-CEM, with Low Resolution ADC receiver (1-bit ADC in the default operation) is considered as one of the alternative candidates to the well known MIMO-OFDM, suitable for wireless backhaul network in which relay nodes are fixed in their positions. Due to the low resolution ADC, MIMO-CEM channel estimation is considered as one of the major problems to withstand its real application. The authors have proposed an adaptive MIMO-CEM channel estimator based upon replicating the received preamble signal to exactly estimate the non-linear effect of the low resolution ADC. Because MIMO-CEM ADC is Intermediate Frequency (IF) sampled, the authors replicated the whole IF MIMO-CEM transceiver to exactly replicate the received preamble signal. Although this channel estimator has an excellent performance, its computational complexity is very high. This high complexity comes from the IF (high frequency) calculations. In this paper, we introduce a low complex MIMO-CEM adaptive channel estimator based upon linearly modeling the quantization error occurred at the low resolution IF sampled ADC, using linear curve fitting, in baseband. Hence, a baseband adaptive channel estimator can be designed, which has a much lower complexity than the IF estimator (previously designed by the authors). We prove the effectiveness of the proposed estimator under different channel scenarios using MSK and GMSK modulations. |
| （英） | MIMO-Constant Envelope Modulation, MIMO-CEM, with Low Resolution ADC receiver (1-bit ADC in the default operation) is considered as one of the alternative candidates to the well known MIMO-OFDM, suitable for wireless backhaul network in which relay nodes are fixed in their positions. Due to the low resolution ADC, MIMO-CEM channel estimation is considered as one of the major problems to withstand its real application. The authors have proposed an adaptive MIMO-CEM channel estimator based upon replicating the received preamble signal to exactly estimate the non-linear effect of the low resolution ADC. Because MIMO-CEM ADC is Intermediate Frequency (IF) sampled, the authors replicated the whole IF MIMO-CEM transceiver to exactly replicate the received preamble signal. Although this channel estimator has an excellent performance, its computational complexity is very high. This high complexity comes from the IF (high frequency) calculations. In this paper, we introduce a low complex MIMO-CEM adaptive channel estimator based upon linearly modeling the quantization error occurred at the low resolution IF sampled ADC, using linear curve fitting, in baseband. Hence, a baseband adaptive channel estimator can be designed, which has a much lower complexity than the IF estimator (previously designed by the authors). We prove the effectiveness of the proposed estimator under different channel scenarios using MSK and GMSK modulations. | |
| キーワード | （和） | MIMO / Constant envelope modulation / Channel estimation / Block based adaptive filter / Low resolution ADC / / / |
| （英） | MIMO / Constant envelope modulation / Channel estimation / Block based adaptive filter / Low resolution ADC / / / | |
| 文献情報 | 信学技報, vol. 111, no. 404, RCS2011-285, pp. 103-108, 2012年1月. | |
| 資料番号 | RCS2011-285 | |
| 発行日 | 2012-01-19 (SIP, RCS) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| 著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します．(許諾番号：10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| PDFダウンロード | SIP2011-96 RCS2011-285 |
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| 研究会情報 | |
| 研究会 | RCS SIP |
| 開催期間 | 2012-01-26 - 2012-01-27 |
| 開催地（和） | 福岡大学 |
| 開催地（英） | Fukuoka Univ. |
| テーマ（和） | 無線通信のための信号処理および一般 |
| テーマ（英） | Signal Processing for Wireless Systems, etc. |
| 講演論文情報の詳細 | |
| 申込み研究会 | RCS |
| 会議コード | 2012-01-RCS-SIP |
| 本文の言語 | 英語 |
| タイトル（和） | |
| サブタイトル（和） | |
| タイトル（英） | Low Complexity Channel Estimation for MIMO-Constant Envelope Modulation |
| サブタイトル（英） | |
| キーワード(1)（和/英） | MIMO / MIMO |
| キーワード(2)（和/英） | Constant envelope modulation / Constant envelope modulation |
| キーワード(3)（和/英） | Channel estimation / Channel estimation |
| キーワード(4)（和/英） | Block based adaptive filter / Block based adaptive filter |
| キーワード(5)（和/英） | Low resolution ADC / Low resolution ADC |
| キーワード(6)（和/英） | / |
| キーワード(7)（和/英） | / |
| キーワード(8)（和/英） | / |
| 第1著者 氏名（和/英/ヨミ） | Ehab Mahmoud Mohamed / Ehab Mahmoud Mohamed / |
| 第1著者 所属（和/英） | Kyushu University (略称： 九大) Kyushu University (略称： Kyushu Univ.) |
| 第2著者 氏名（和/英/ヨミ） | Osamu Muta / Osamu Muta / |
| 第2著者 所属（和/英） | Kyushu University (略称： 九大) Kyushu University (略称： Kyushu Univ.) |
| 第3著者 氏名（和/英/ヨミ） | Hiroshi Furukawa / Hiroshi Furukawa / |
| 第3著者 所属（和/英） | Kyushu University (略称： 九大) Kyushu University (略称： Kyushu Univ.) |
| 講演者 | 第1著者 |
| 発表日時 | 2012-01-27 09:25:00 |
| 発表時間 | 25分 |
| 申込先研究会 | RCS |
| 資料番号 | SIP2011-96, RCS2011-285 |
| 巻番号（vol） | vol.111 |
| 号番号（no） | no.403(SIP), no.404(RCS) |
| ページ範囲 | pp.103-108 |
| ページ数 | 6 |
| 発行日 | 2012-01-19 (SIP, RCS) |
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