| Presentation | 2000/12/8 MAI Mitigation by Repetitional Cyclic-Shifted Sequences in Optical CDMA Systems Toshio Sonoda, Katsuhiro Kamakura, Tomoaki Ohtsuki, Iwao Sasase, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper optical code-division multiple-access(CDMA)systems with repetitional cyclic-shifed sequences(RCS)in proposed for mitigation of multiple access interferece(MAI). When the number of reptition is κ, a user transmit κ sequeces in each frame, and the κ sequences are generated by arbitrary cyclic-shifting a code assigned to each user. At the receiver side the out-puts from the correlators over κ sequences are summed as the desired signal. RCS/CDMA system can mitigate MAI because the peak power of the desired signal in the RCS/CDMA is κ times larger than that in the system without RCS, while the interference probability of each frame is almost same as that of the syatem without RCS for the variety of the numbers of cyclic-shift sequences among the users. We evaluate the bit error probability of on-off keying(OOK)-RCS/CDMA system and pulse-position modulation(PPM)-RCS/CDMA system with κ=2 by the theoretical analysis and compare with the conventional system. We show that the RCS can impyove the biterror probability of the conventional system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | optical code-division multiple-access(CDMA) / on-off keying(OOK) / pulse-position modulation(PPM) / repetitionnal cyclic-shifted sequences(RCS) / multiple access interference(MAI) |
| Paper # | CS2000-126,IE2000-136 |
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| Conference Information | |
| Committee | CS |
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| Conference Date | 2000/12/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Systems (CS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | MAI Mitigation by Repetitional Cyclic-Shifted Sequences in Optical CDMA Systems |
| Sub Title (in English) | |
| Keyword(1) | optical code-division multiple-access(CDMA) |
| Keyword(2) | on-off keying(OOK) |
| Keyword(3) | pulse-position modulation(PPM) |
| Keyword(4) | repetitionnal cyclic-shifted sequences(RCS) |
| Keyword(5) | multiple access interference(MAI) |
| 1st Author's Name | Toshio Sonoda |
| 1st Author's Affiliation | Dept.of Information and Computer Science, Keio University() |
| 2nd Author's Name | Katsuhiro Kamakura |
| 2nd Author's Affiliation | Dept.of Information and Computer Science, Keio University |
| 3rd Author's Name | Tomoaki Ohtsuki |
| 3rd Author's Affiliation | Dept.of Electrical Engineering, Science University of Tokyo |
| 4th Author's Name | Iwao Sasase |
| 4th Author's Affiliation | Dept.of Information and Computer Science, Keio University |
| Date | 2000/12/8 |
| Paper # | CS2000-126,IE2000-136 |
| Volume (vol) | vol.100 |
| Number (no) | 500 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |