| Presentation | 2000/5/19 Direct-Detection Optical Synchronous CDMA Systems with Interference Canceller Using Group Information Codes Hiroshi Sawagashira, Katsuhiro Kamakura, Tomoaki Ohtsuki, Iwao Sasase, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose direct-detection optical synchronous code-division multiple-access(CDMA) systems with interference canceller using group information codes. The signature sequences used in the proposed system are composed of the group information codes and the modified prime code sequences. For the modified prime code sequences of the prime number P, the code length of the group information codes is P and the group information code for the group k has"1"only at the(k+1)th chip out of P chips. The use of the group information codes makes the number of branches of the canceller in the proposed system to be two while keeping it possible to estimate the same amount of Multiple- Access-Interference(MAI) as the conventional canceller. Note that the number of branches of the conventional canceller is P. Thus, the received laser power per branch of the proposed canceller is increased because of the decrease in the number of branches. We analyze the performance of the proposed system applying Gausian approximation to the output of avalanche photodeiode(APD). We show that the proposed system has better bit error probability than the conventional system under the constant received laser power and the chip rate constraint. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CDMA / MAI / interference canceller / group information codes |
| Paper # | CS2000-15,RCS2000-26 |
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| 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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| 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) | Direct-Detection Optical Synchronous CDMA Systems with Interference Canceller Using Group Information Codes |
| Sub Title (in English) | |
| Keyword(1) | CDMA |
| Keyword(2) | MAI |
| Keyword(3) | interference canceller |
| Keyword(4) | group information codes |
| 1st Author's Name | Hiroshi Sawagashira |
| 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 | 2000/5/19 |
| Paper # | CS2000-15,RCS2000-26 |
| Volume (vol) | vol.100 |
| Number (no) | 83 |
| Page | pp.pp.- |
| #Pages | 7 |
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