| Presentation | 2009-07-29 Multi-phase orthogonal code based on Fourier matrix and its application to optical code division multiplexing Masanori HANAWA, Kenta HOSOYA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Fourier code, a novel multi-phase orthogonal code for optical code division multiplexing (OCDM)/optical code division multiple access (OCDMA), is proposed. The Fourier code is given as rows of Fourier matrices, which are a kind of generalized Hadamard matrix; therefore the Fourier code is a kind of complex-valued (I-Q) orthogonal code utilizing multiple states of carrier phase to represent a codeword, in contrast with conventional real-valued orthogonal codes such as binary Hadamard code or Gold sequences, well-known in CDMA systems for mobile communications. The use of the Fourier code in an OCDM/OCDMA system gives low multiple access interference property as well as a novel functionality, code adaptation, which enables to change a codeword represented by an optical encoder/decoder, even when fiber Bragg grating based optical correlators are used as optical encoders or decoders. In this report, the effectiveness of the Fourier code is experimentally demonstrated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OCDM / OCDMA / Multi-phase orthogonal code / Generalized Hadamard matrix / MAI Reduction |
| Paper # | OCS2009-20 |
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| Conference Information | |
| Committee | OCS |
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| Conference Date | 2009/7/22(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Optical Communication Systems (OCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multi-phase orthogonal code based on Fourier matrix and its application to optical code division multiplexing |
| Sub Title (in English) | |
| Keyword(1) | OCDM |
| Keyword(2) | OCDMA |
| Keyword(3) | Multi-phase orthogonal code |
| Keyword(4) | Generalized Hadamard matrix |
| Keyword(5) | MAI Reduction |
| 1st Author's Name | Masanori HANAWA |
| 1st Author's Affiliation | Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi() |
| 2nd Author's Name | Kenta HOSOYA |
| 2nd Author's Affiliation | Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi |
| Date | 2009-07-29 |
| Paper # | OCS2009-20 |
| Volume (vol) | vol.109 |
| Number (no) | 154 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |