| Presentation | 1997/6/24 Optical CDMA Based on Frequency-Domain Encoding Enhancement of Frequency Division Multiplexing Katsuhiro Kamakura, Yoshinobu Gamachi, Hideyuki Uehara, Tomoaki Ohtsuki, Iwao Sasase, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Frequency-domain encoding code division multiple access (FE-CDMA) has been widely studied as a type of optical CDMA. In this system, encoding is done in the frequency domain spread by optically Fourier transform. However, there is disadvantage that the number of simultaneous users of FE-CDMA is small, although this scheme requires a large optical bandwidth. On the other hand, frequency division multiplexing (FDM) offers orthogonal transmission, but requires a great effort and permits a small number of optical frequencies. In this paper, we propose a new hybrid network that combines the advantage of FDM with FE-CDMA. Assuming performance is mainly degraded by multiple-access interference (MAI), we derive the bit error rate (BER) by using a Gaussian assumption on MAI. As a result, we show that FDM/FE-CDMA network can support the larger number of simultaneous users than a conventional FE-CDMA one at a given bit error rate under the same total bandwidth. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | FE-CDMA / FDM / multiple-access interference (MAI) / adjacent crosstalk / spectral apparatus / spatial filter |
| Paper # | CS97-42 |
| Date of Issue |
| Conference Information | |
| Committee | OCS |
|---|---|
| Conference Date | 1997/6/24(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Optical Communication Systems (OCS) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical CDMA Based on Frequency-Domain Encoding Enhancement of Frequency Division Multiplexing |
| Sub Title (in English) | |
| Keyword(1) | FE-CDMA |
| Keyword(2) | FDM |
| Keyword(3) | multiple-access interference (MAI) |
| Keyword(4) | adjacent crosstalk |
| Keyword(5) | spectral apparatus |
| Keyword(6) | spatial filter |
| 1st Author's Name | Katsuhiro Kamakura |
| 1st Author's Affiliation | Dept. of Electrical Engineering, Keio University() |
| 2nd Author's Name | Yoshinobu Gamachi |
| 2nd Author's Affiliation | Dept. of Electrical Engineering, Keio University |
| 3rd Author's Name | Hideyuki Uehara |
| 3rd Author's Affiliation | Dept. of Information & Computer Sciences Toyohashi University of Technology |
| 4th Author's Name | Tomoaki Ohtsuki |
| 4th Author's Affiliation | Dept. of Electrical Engineering Science University of Tokyo |
| 5th Author's Name | Iwao Sasase |
| 5th Author's Affiliation | Dept. of Electrical Engineering, Keio University |
| Date | 1997/6/24 |
| Paper # | CS97-42 |
| Volume (vol) | vol.97 |
| Number (no) | 130 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |