发明名称 |
Ocdma network architectures, optical coders and methods for optical coding |
摘要 |
The invention relates to a OCDMA network architectures. In order to achieve a less expensive frequency-hopping coding for a high number of users, the network comprices: a plurality of means (81) for passband filtering and multiplexing broadband signals, each of said means (81) being assigned to a group of users (80) and filtering a broadband signal provided by a user (80) of the respective group with a different frequency passband and multiplexing the filtered signals of the users (80) of one group; a periodic optical coder (82) assigned to each group of users (80) for encoding the signals multiplexed by the means (81) for filtering and multiplexing, each coder (82) using a different code for encoding the signals originating from the different groups; and means (83) for combining the signals output by the coders (82) to a single broadband signal. The invention equally relates to a further architecture, suitable coders and corresponding methods.
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申请公布号 |
US2004047543(A1) |
申请公布日期 |
2004.03.11 |
申请号 |
US20030466156 |
申请日期 |
2003.08.25 |
申请人 |
HIIRONEN OLLI-PEKKA;OKSANEN MARKKU |
发明人 |
HIIRONEN OLLI-PEKKA;OKSANEN MARKKU |
分类号 |
H04J14/00;(IPC1-7):G02B6/26;G02B6/42 |
主分类号 |
H04J14/00 |
代理机构 |
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主权项 |
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地址 |
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