2023 Fiscal Year Final Research Report
Theoretical clarification and experimental verification of wide-area and low-power consumption effects in new repetitive transmission scheme
| Project/Area Number |
21K04060
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21020:Communication and network engineering-related
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | OFDM / 繰り返し送信 / 広域化 / 低消費電力化 / 理論的解明 / 実験検証 |
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| Outline of Final Research Achievements |
In this research, a new repeated transmission method to improve both transmission rate and transmission quality is proposed. Since the transmission characteristics vary greatly depending on the wireless channel condition, theoretical equations for the transmission characteristics are derived based on the number of repeated transmissions and the wireless channel condition in order to theoretically clarify the superiority of the proposed method and its ripple effects. In addition, it is experimentally verified that the proposed method is superior in terms of wide area coverage and low power consumption of IoT devices.
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| Free Research Field |
無線通信工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の提案方式は，広域化・低消費電力化といった目的を達成するための特別なハードウェアは必要とせず，無線回線の状態に応じて方式設計パラメータを適応的に変更するといった制御が簡単な信号処理（ソフトウェア）だけで可能となる．また，本研究で導出した伝送特性の理論式を用いることで，常に伝送特性を最良に保つような適応制御を理論的に可能にしている．さらに，本方式は音の帯域を用いたOFDM信号を生成でき，信号処理量も小さいことから，低価格で小型なマイコン開発ボードやシングルボードコンピュータにも実装可能である．
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