| Presentation | 2022-11-24 Successive Interference Cancellation Among Multiple LPWA Systems Based on Cooperation Between Multiple GWs Shinichiro Kakuda, Takeo Fujii, Shusuke Narieda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Nowadays, the number of low power wide area (LPWA) nodes that can communicate over long distances with low power has been increasing rapidly. Additionally, to utilize LPWA in various use cases, various LPWA systems with different communication protocols have been developed. Because these systems utilize the same unlicensed Sub-GHz bands, intra-system and inter-system interferences may frequently cause at gateways (GWs). Thus, we have proposed successive interference cancellation (SIC) among multiple LPWA systems at GWs with a modulator and demodulator for each system. In SIC, GW temporarily accumulates received and superposed signals and then (i) demodulates in each system, (ii) generates replica signals, and (iii) subtracts the replica signals from the accumulated signals, iteratively. Step (i) can be performed when the received power difference among the signals is enough. However, when the received power difference is less, GW cannot perform the demodulation and subtraction. Therefore, we propose SIC based on cooperation between multiple GWs. In this method, the GW succeeding to demodulate shares the demodulated binary data with the GW failing to demodulate, which assists the replica generation at the latter GW. Simulation results show that packet error rate can be suppressed drastically for the whole system compared to SIC at one GW without the cooperation between the GWs. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Successive Interference Cancellation / LPWA / LoRaWAN / Wi-SUN |
| Paper # | SRW2022-16 |
| Date of Issue | 2022-11-17 (SRW) |
| Conference Information | |
| Committee | SRW / SeMI / CNR |
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| Conference Date | 2022/11/24(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Epinard Nasu |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | IoT Workshop |
| Chair | Hanako Noda(Anritsu) / Koji Yamamoto(Kyoto Univ.) / Masayuki Kanbara(NAIST) |
| Vice Chair | Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Denki Univ.) / Hirokazu Sawada(NICT) / Kazuya Monden(Hitachi) / Yasunori Owada(NICT) / Shunsuke Saruwatari(Osaka Univ.) / Yuri Nishikawa(AIST) |
| Secretary | Keiichi Mizutani(KUT) / Kentaro Saito(Niigata Univ.) / Hirokazu Sawada(NTT DOCOMO) / Kazuya Monden(Tokyo Univ. of Agri. and Tech.) / Yasunori Owada(Osaka Univ.) / Shunsuke Saruwatari(Toshiba) / Yuri Nishikawa(Nagoya Sangyo Univ.) |
| Assistant | Maki Arai(Nihon Univ.) / Yuichi Masuda(Univ. of Tokyo) / Yuki Matsuda(NAIST) / Akihito Taya(Aoyama Gakuin Univ.) / Takeshi Hirai(Osaka Univ.) / Yuta Hoshi(NHK) / Junji Yamato(Kogakuin Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Short Range Wireless Communications / Technical Committee on Sensor Network and Mobile Intelligence / Technical Committee on Cloud Network Robotics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Successive Interference Cancellation Among Multiple LPWA Systems Based on Cooperation Between Multiple GWs |
| Sub Title (in English) | |
| Keyword(1) | Successive Interference Cancellation |
| Keyword(2) | LPWA |
| Keyword(3) | LoRaWAN |
| Keyword(4) | Wi-SUN |
| 1st Author's Name | Shinichiro Kakuda |
| 1st Author's Affiliation | University of Electro-Communications(UEC) |
| 2nd Author's Name | Takeo Fujii |
| 2nd Author's Affiliation | University of Electro-Communications(UEC) |
| 3rd Author's Name | Shusuke Narieda |
| 3rd Author's Affiliation | Mie University(Mie Univ.) |
| Date | 2022-11-24 |
| Paper # | SRW2022-16 |
| Volume (vol) | vol.122 |
| Number (no) | SRW-277 |
| Page | pp.pp.1-6(SRW), |
| #Pages | 6 |
| Date of Issue | 2022-11-17 (SRW) |