| Presentation | 2005-06-10 Performance Evaluation of IEEE802.11a WLAN Interfered by Spread Spectrum Noises from a PC Clock System Toshiki SHIMIZU, Yasushi MATSUMOTO, Katsumi FUJII, Akira SUGIURA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The OFDM-based WLAN (Wireless LAN) systems, such as IEEE802.11a system, have been widely used and their terminals are usually placed very close to personal computers(PCs). However, PCs radiate harmonic noises in the WLAN frequency bands (2.4GHz and 5.2GHz) that may cause interference with the WLAN links. Recently, PC clock frequency is intentionally changed with time (spread spectrum clocking; SSC). Hence, BER performance of IEEE802.11a WLAN systems is investigated applying frequency modulated interferences. Theoretical analysis and numerical simulations are carried out in order to discuss the effectiveness of the FEC on SSC on harmonic noises. It is found that average BER without FEC decreases as the frequency variation rate of the interference increases. However BER with FEC is degraded by the frequency modulation of the harmonics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wireless LAN / IEEE802.11a / OFDM / Spread Spectrum Clock Generation / EMI |
| Paper # | EMCJ2005-32 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2005/6/2(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electromagnetic Compatibility (EMCJ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Evaluation of IEEE802.11a WLAN Interfered by Spread Spectrum Noises from a PC Clock System |
| Sub Title (in English) | |
| Keyword(1) | Wireless LAN |
| Keyword(2) | IEEE802.11a |
| Keyword(3) | OFDM |
| Keyword(4) | Spread Spectrum Clock Generation |
| Keyword(5) | EMI |
| 1st Author's Name | Toshiki SHIMIZU |
| 1st Author's Affiliation | Research Institute of Electrical Communication, Tohoku University() |
| 2nd Author's Name | Yasushi MATSUMOTO |
| 2nd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 3rd Author's Name | Katsumi FUJII |
| 3rd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 4th Author's Name | Akira SUGIURA |
| 4th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| Date | 2005-06-10 |
| Paper # | EMCJ2005-32 |
| Volume (vol) | vol.105 |
| Number (no) | 107 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |