| Presentation | 2000/5/19 Performance Analysis of Indoor Infrared Wireless Systems Using PPM CDMA with Hard Limiter on Diffuse Channels Ryoko Matsuo, Tomoaki Ohtsuki, Iwao Sasase, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As infrared link designs, diffuse channels are robust against shadowing, however diffuse channels are subject to multipath dispersion that causes intersymbol interference(ISI). The performance of infrared wireless systems using PPM CDMA is analyzed on LOS channels and diffuse channels where ISI is assumed to affect only two chips. However, in the practical situation, ISI often affects more than two chips. This report analyzes the performance of indoor infrared wireless systems using PPM CDMA on diffuse channels by taking the effects of ISI over several chips into account. Then we propose PPM CDMA systen with Hard Limiter(HL) to mitigate the effects of ISI. We show that how much the transmitted power should be increased on diffuse channels, and that the performance of the system using PPM CDMA is superior to that of the system using on-off keing(OOK) CDMA on diffuse channels. We also show that the performance of the PPM CDMA system with HL is superior to that of the unequalized PPM CDMA. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Indoor Infrared Wireless System / Diffuse Channels / CDMA / Hard Limiter |
| Paper # | CS2000-12,RCS2000-23 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2000/5/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Analysis of Indoor Infrared Wireless Systems Using PPM CDMA with Hard Limiter on Diffuse Channels |
| Sub Title (in English) | |
| Keyword(1) | Indoor Infrared Wireless System |
| Keyword(2) | Diffuse Channels |
| Keyword(3) | CDMA |
| Keyword(4) | Hard Limiter |
| 1st Author's Name | Ryoko Matsuo |
| 1st Author's Affiliation | Dept.of Information and Computer Science, Keio University() |
| 2nd Author's Name | Tomoaki Ohtsuki |
| 2nd Author's Affiliation | Dept.of Electrical Engineering, Science University of Tokyo |
| 3rd Author's Name | Iwao Sasase |
| 3rd Author's Affiliation | Dept.of Information and Computer Science, Keio University |
| Date | 2000/5/19 |
| Paper # | CS2000-12,RCS2000-23 |
| Volume (vol) | vol.100 |
| Number (no) | 83 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |