| Presentation | 2022-11-07 [Technology Exhibit] Consideration of conversion tables in the implementation of PLIM for 429MHz LoRa/FSK Keita Takeda, Ryuji Miyamoto, Osamu Takyu, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | LPWA (Low Power Wide Area) is a communication method for the IoT that enables long-distance communication with low power consumption. However, there is a problem of data loss due to packet collision when transmitting simultaneously and on the same frequency channel. The authors have implemented PLIM on a 429 MHz LoRa/FSK. We have improved the collision rate by randomly creating and assigning mappings. In this paper, the authors conducted an actual device experiment using an optimal mapping design method that uses mathematical optimization to improve the correspondence table between the index and the information to be sent, showed its effectiveness and significance to other methods, and evaluated it in an actual device environment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LPWA / PLIM / Mathematical Optimization / Actual Equipment |
| Paper # | SR2022-53 |
| Date of Issue | 2022-10-31 (SR) |
| Conference Information | |
| Committee | SR |
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| Conference Date | 2022/11/7(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Software Defined Radio, Cognitive Radio, Spectrum Sharing, etc. |
| Chair | Suguru Kameda(Hiroshima Univ.) |
| Vice Chair | Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Kazuto Yano(ATR) |
| Secretary | Osamu Takyu(Mie Univ.) / Kentaro Ishidu(Tokai Univ.) / Kazuto Yano(NTT) |
| Assistant | Taichi Ohtsuji(NEC) / WANG Xiaoyan(Ibaraki Univ.) / Akemi Tanaka(MathWorks) / Katsuya Suto(Univ. of Electro-Comm) |
| Paper Information | |
| Registration To | Technical Committee on Smart Radio |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Technology Exhibit] Consideration of conversion tables in the implementation of PLIM for 429MHz LoRa/FSK |
| Sub Title (in English) | |
| Keyword(1) | LPWA |
| Keyword(2) | PLIM |
| Keyword(3) | Mathematical Optimization |
| Keyword(4) | Actual Equipment |
| 1st Author's Name | Keita Takeda |
| 1st Author's Affiliation | Shinshu University(Shinshu Univ.) |
| 2nd Author's Name | Ryuji Miyamoto |
| 2nd Author's Affiliation | Shinshu University(Shinshu Univ.) |
| 3rd Author's Name | Osamu Takyu |
| 3rd Author's Affiliation | Shinshu University(Shinshu Univ.) |
| Date | 2022-11-07 |
| Paper # | SR2022-53 |
| Volume (vol) | vol.122 |
| Number (no) | SR-243 |
| Page | pp.pp.41-45(SR), |
| #Pages | 5 |
| Date of Issue | 2022-10-31 (SR) |