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| 講演名 | 2010-08-27 10:00 MIMO定包絡線変調システムのための伝搬路特性推定法 ○Ehab Mahmoud Mohamed・牟田 修・古川 浩（九大）  RCS2010-98 |
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| 抄録 | （和） | The authors have proposed the MIMO-Constant Envelope Modulation transceiver system with Low Resolution ADC receiver, MIMO-CEM, which is considered as one of the strong alternative candidates to the well known MIMO-OFDM system, suitable for wireless backhaul network in which relay nodes are fixed in their positions. One of the major problems to withstand the real application of the MIMO-CEM transceiver system is the channel estimation. MIMO-CEM is based upon the MLSE (Maximum Likelihood Sequence Estimator) equalizer which needs accurate channel information to work effectively. On the other hand, MIMO-CEM design is also based upon very low resolution ADC at the receiver side (1-bit in some cases), which means that the received channel amplitude information may be partially or completely destroyed (1-bit case). These two contrary demands make MIMO-CEM channel estimation a big challenge; how we can accurately estimate the channel in this severe low bit resolution conditions for the MLSE equalizer to work efficiently. This paper considers this issue through designing an efficient channel estimator based upon block based adaptive filter. In addition, and in order to speed up the convergence rate of the proposed adaptive estimator, we design a correlator estimator as initial channel states estimation used by the adaptive estimator. We prove that the proposed MIMO-CEM channel estimator is effective in estimating the channel characteristics under different channel scenarios and different ADC resolutions. In addition, we evaluate the performance of the MSK and GMSK based CEM transceivers using the proposed channel estimator. |
| （英） | The authors have proposed the MIMO-Constant Envelope Modulation transceiver system with Low Resolution ADC receiver, MIMO-CEM, which is considered as one of the strong alternative candidates to the well known MIMO-OFDM system, suitable for wireless backhaul network in which relay nodes are fixed in their positions. One of the major problems to withstand the real application of the MIMO-CEM transceiver system is the channel estimation. MIMO-CEM is based upon the MLSE (Maximum Likelihood Sequence Estimator) equalizer which needs accurate channel information to work effectively. On the other hand, MIMO-CEM design is also based upon very low resolution ADC at the receiver side (1-bit in some cases), which means that the received channel amplitude information may be partially or completely destroyed (1-bit case). These two contrary demands make MIMO-CEM channel estimation a big challenge; how we can accurately estimate the channel in this severe low bit resolution conditions for the MLSE equalizer to work efficiently. This paper considers this issue through designing an efficient channel estimator based upon block based adaptive filter. In addition, and in order to speed up the convergence rate of the proposed adaptive estimator, we design a correlator estimator as initial channel states estimation used by the adaptive estimator. We prove that the proposed MIMO-CEM channel estimator is effective in estimating the channel characteristics under different channel scenarios and different ADC resolutions. In addition, we evaluate the performance of the MSK and GMSK based CEM transceivers using the proposed channel estimator. | |
| 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. 110, no. 175, RCS2010-98, pp. 117-122, 2010年8月. | |
| 資料番号 | RCS2010-98 | |
| 発行日 | 2010-08-19 (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 | RCS2010-98 |
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| 研究会情報 | |
| 研究会 | SAT RCS |
| 開催期間 | 2010-08-26 - 2010-08-27 |
| 開催地（和） | 鹿児島大学 |
| 開催地（英） | Kagoshima Univ. |
| テーマ（和） | 移動衛星通信，放送，誤り訂正，無線通信一般 |
| テーマ（英） | |
| 講演論文情報の詳細 | |
| 申込み研究会 | RCS |
| 会議コード | 2010-08-SAT-RCS |
| 本文の言語 | 英語（日本語タイトルあり） |
| タイトル（和） | MIMO定包絡線変調システムのための伝搬路特性推定法 |
| サブタイトル（和） | |
| タイトル（英） | Channel Estimation Technique for MIMO-Constant Envelope Modulation Transceiver System |
| 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） | 九州大学 (略称： 九大) Kyushu university (略称： Kyushu Univ.) |
| 第2著者 氏名（和/英/ヨミ） | 牟田 修 / Osamu Muta / |
| 第2著者 所属（和/英） | 九州大学 (略称： 九大) Kyushu university (略称： Kyushu Univ.) |
| 第3著者 氏名（和/英/ヨミ） | 古川 浩 / Hiroshi Furukawa / |
| 第3著者 所属（和/英） | 九州大学 (略称： 九大) Kyushu university (略称： Kyushu Univ.) |
| 講演者 | 第1著者 |
| 発表日時 | 2010-08-27 10:00:00 |
| 発表時間 | 20分 |
| 申込先研究会 | RCS |
| 資料番号 | RCS2010-98 |
| 巻番号（vol） | vol.110 |
| 号番号（no） | no.175 |
| ページ範囲 | pp.117-122 |
| ページ数 | 6 |
| 発行日 | 2010-08-19 (RCS) |
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