Cable modem system management of passive optical networks (pons)
US-2024396635-A1 · Nov 28, 2024 · US
Optical transmission device
US2016006512A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016006512-A1 |
| Application number | US-201414766852-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 20, 2014 |
| Priority date | Feb 21, 2013 |
| Publication date | Jan 7, 2016 |
| Grant date | — |
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Abstract
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Provided is an optical transmission device for transmitting and receiving a multilevel-modulated optical signal, including: a plurality of transmission frame processors ( 212 to 214, 222 to 224 ) for generating transmission frame signals accommodating a plurality of client signals that are each subjected to error correction processing and scrambling/descrambling processing; and a digital modulator/demodulator ( 215 ) for mapping the transmission frame signals that are input to and output from the plurality of transmission frame processors to a multilevel signal and performing digital modulation/demodulation, in which the plurality of transmission frame processors each have a function of shifting a phase of a pattern between a plurality of transmission frames to be mapped to a multilevel signal and be digitally modulated/demodulated.
First claim
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1 . An optical transmission device for transmitting and receiving a multilevel-modulated optical signal, comprising: a plurality of transmission frame processors for generating transmission frame signals accommodating a plurality of client signals that are each subjected to error correction processing and scrambling/descrambling processing; and a digital modulator/demodulator for mapping the transmission frame signals that are input to and output from the plurality of transmission frame processors to a multilevel signal and performing digital modulation/demodulation, wherein the plurality of transmission frame processors each have a function of shifting a phase of a pattern between a plurality of transmission frames to be mapped to a multilevel signal and be digitally modulated/demodulated. 2 . An optical transmission device according to claim 1 , wherein the plurality of transmission frame processors each comprise a memory for shifting a phase of each of the plurality of client signals, and perform the error correction processing and the scrambling/descrambling processing on the each of the plurality of client signals whose phase is shifted by the memory, to thereby shift the phase of the pattern between the plurality of transmission frames to be mapped to the multilevel signal and be digitally modulated/demodulated. 3 . An optical transmission device according to claim 1 , wherein the plurality of transmission frame processors each change a seed value for generating a pseudo-random pattern in the scrambling/descrambling processing, to thereby shift the phase of the pattern between the plurality of transmission frames to be mapped to the multilevel signal and be digitally modulated/demodulated.
Assignees
Inventors
Classifications
Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated (H04L27/366 takes precedence) · CPC title
Combination of different modulation schemes · CPC title
Optical Transport Network [OTN] · CPC title
- H04B10/40Primary
Transceivers · CPC title
Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape (H04L1/0067 takes precedence) · CPC title
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- What does patent US2016006512A1 cover?
- Provided is an optical transmission device for transmitting and receiving a multilevel-modulated optical signal, including: a plurality of transmission frame processors ( 212 to 214, 222 to 224 ) for generating transmission frame signals accommodating a plurality of client signals that are each subjected to error correction processing and scrambling/descrambling processing; and a digital mo…
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification H04B10/40. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jan 07 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).