发明名称 |
Multilevel intensity modulation and demodulation system and method |
摘要 |
A multilevel-intensity modulation and demodulation system includes: a digital-to-analog conversion unit to convert an output level value of a digital signal into an analog signal; a multilevel-intensity-modulated light transmission unit to transmit an optical signal multilevel-intensity modulated based on the analog signal; a multilevel-intensity-modulated light reception unit to receive the optical signal multilevel-intensity modulated, and convert the received optical signal into an analog reception electrical signal; an analog-to-digital conversion unit to convert the analog reception electrical signal into a reception level value; and a controller to convert a transmission multiple gradation level being one of a plurality of multiple gradation levels of multilevel-intensity modulation to which the digital signal is mapped, into the output level value so as to cause the reception level value to be in a desired reception state, and to receive a digital signal corresponding to a reception multiple-gradation-level determined from the reception level value. |
申请公布号 |
EP2903187(A1) |
申请公布日期 |
2015.08.05 |
申请号 |
EP20150152659 |
申请日期 |
2015.01.27 |
申请人 |
FUJITSU LIMITED |
发明人 |
KAI, YUTAKA;NISHIHARA, MASATO;TANAKA, TOSHIKI;TAKAHARA, TOMOO |
分类号 |
H04B10/54;H04L27/36 |
主分类号 |
H04B10/54 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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