| Presentation | 2023-03-02 Fractional Delay Implementation Focusing on Relative Delay Difference Haruto Nakamura, Yoji Yamada, Suguru Kameda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In software defined radios, it is sometimes desired to compensate for a fixed time difference that remains between multiple signal paths that are phase-synchronized. This paper describes the results of verifying the feasibility of a delay compensation method that adds group delay to the signal path of the baseband signal and sets the relative delay difference to a desired value. In this method, the impulse response obtained by sampling the $rm{sinc}( )$ function is used to generate the group delay of arbitrary granularity. Then, based on the error criterion proposed in this paper, the realizable bandwidth and the amount of delay are clarified as the relative delay difference. Furthermore, simulation results show that the equivalent discrete-time impulse response of a two-ray fading model may contain non-causal components when a delayed wave arrives at a time that is non-integer multiple of the sampling period. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | fractional delay / relative error / relative delay difference / linear phase / causality / two-ray fading model / fractional delay two-ray fading model |
| Paper # | SR2022-88 |
| Date of Issue | 2023-02-22 (SR) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2023/3/1(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology, and Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Kenichi Higuchi(Tokyo Univ. of Science) / Suguru Kameda(Hiroshima Univ.) / Hanako Noda(Anritsu) |
| Vice Chair | Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Denki Univ.) / Hirokazu Sawada(NICT) |
| Secretary | Tomoya Tandai(Panasonic) / Fumihide Kojima(Univ. of Electro-Comm) / Osamu Muta(Sharp) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(Tokai Univ.) / Kazuto Yano(NTT) / Keiichi Mizutani(KUT) / Kentaro Saito(NIigata Univ.) / Hirokazu Sawada |
| Assistant | Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Mai Ohta(NEC) / WANG Xiaoyan(Ibaraki Univ.) / Akemi Tanaka(MathWorks) / Katsuya Suto(Univ. of Electro-Comm) / Maki Arai(Nihon Univ.) / Yuichi Masuda(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fractional Delay Implementation Focusing on Relative Delay Difference |
| Sub Title (in English) | |
| Keyword(1) | fractional delay |
| Keyword(2) | relative error |
| Keyword(3) | relative delay difference |
| Keyword(4) | linear phase |
| Keyword(5) | causality |
| Keyword(6) | two-ray fading model |
| Keyword(7) | fractional delay two-ray fading model |
| 1st Author's Name | Haruto Nakamura |
| 1st Author's Affiliation | National Institute of Technology, Ishikawa College(NIT, Ishikawa College) |
| 2nd Author's Name | Yoji Yamada |
| 2nd Author's Affiliation | National Institute of Technology, Ishikawa College(NIT, Ishikawa College) |
| 3rd Author's Name | Suguru Kameda |
| 3rd Author's Affiliation | Hiroshima University(Hiroshima Univ.) |
| Date | 2023-03-02 |
| Paper # | SR2022-88 |
| Volume (vol) | vol.122 |
| Number (no) | SR-400 |
| Page | pp.pp.24-31(SR), |
| #Pages | 8 |
| Date of Issue | 2023-02-22 (SR) |