CN102136871A - Optical module device and signal receiving and sending method - Google Patents
Optical module device and signal receiving and sending method Download PDFInfo
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- CN102136871A CN102136871A CN2011100454335A CN201110045433A CN102136871A CN 102136871 A CN102136871 A CN 102136871A CN 2011100454335 A CN2011100454335 A CN 2011100454335A CN 201110045433 A CN201110045433 A CN 201110045433A CN 102136871 A CN102136871 A CN 102136871A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
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Abstract
The invention discloses an optical module device and a signal receiving and sending method, belonging to the field of communication. The signal receiving and sending method comprises the following steps: A. a transmitter receives a channel parameter sent by a receiver through a physical interface, a predistortion algorithm is configured according to the channel parameter, a digital signal needing to be transmitted is treated with predistortion through the predistortion algorithm and converted into an optical signal, and the optical signal is transmitted through a fiber channel; and B. the receiver receives an optical signal from the fiber channel, the optical signal is converted into a digital signal, the channel parameter of the fiber channel is estimated according to the converted digital signal, and the estimated channel parameter is sent to the transmitter through the physical interface. The signal receiving and sending method can improve the flexibility of the optical module device.
Description
Technical field
The present invention relates to the communications field, the method for particularly a kind of optical module device and receiving and transmitting signal.
Background technology
In optical fiber communication, often utilize the optical module device to receive and send signal, the optical module device is the device of transceiver, thus the optical module device can either be from communication network received signal, can send signal to communication network again.
Wherein, as shown in Figure 1, prior art provides a kind of optical module device, comprise transmitter and receiver, transmitter is according to the channel parameter configuration pre-distortion algorithm of configured in advance, by this pre-distortion algorithm the digital signal of needs emissions is carried out pre-distortion, then this digital signal is converted to light signal and launches by fiber channel; Receiver is receiving optical signals from this fiber channel, and the light signal that receives is converted to digital signal.Wherein, the channel parameter of configured in advance measures fiber channel by manual type.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Channel parameter in the optical module device measures fiber channel by manual type, and when the parameter of fiber channel changes, transmitter identification channel apace changes, and flexibility is relatively poor.
Summary of the invention
In order to improve the flexibility of optical module device, the invention provides the method for a kind of optical module device and receiving and transmitting signal.Described technical scheme is as follows:
A kind of optical module device, described optical module device comprises:
Transmitter and receiver, described transmitter links to each other by physical interface with described receiver;
Described transmitter comprises first processing module and modulation module, and described first processing module links to each other with modulation module; Described receiver comprises the light-to-current inversion module and second processing module, and described light-to-current inversion module links to each other with second processing module;
Described first processing module, be used for receiving the channel parameter that described receiver sends by described physical interface, according to described channel parameter configuration pre-distortion algorithm, by described pre-distortion algorithm the digital signal of needs emission is carried out pre-distortion, described digital signal is converted to analog signal and exports to described modulation module;
Described modulation module is used for analog signal conversion with the output of described first processing module and is light signal and launches described light signal by fiber channel;
Described light-to-current inversion module is used for from described fiber channel receiving optical signals described light signal being converted to analog signal, and described analog signal is exported to described second processing module;
Described second processing module is used for the analog signal according to described light-to-current inversion module output, estimates the channel parameter of described fiber channel, and described estimated channel parameter is sent to described transmitter by described physical interface.
A kind of method of utilizing described optical module device receiving and transmitting signal, described optical module device comprises transmitter and receiver, and connects by physical interface between described transmitter and the described receiver, described method comprises:
Steps A: described transmitter receives the channel parameter that described receiver sends by described physical interface; According to described channel parameter configuration pre-distortion algorithm, by described pre-distortion algorithm the digital signal of needs emission is carried out pre-distortion, the described digital signal of emission that needs is converted to light signal and launches described light signal by fiber channel;
Step B: described receiver is receiving optical signals from described fiber channel, described light signal is converted to digital signal, estimate the channel parameter of described fiber channel described estimated channel parameter to be sent to described transmitter according to the digital signal of described conversion by described physical interface.
In embodiments of the present invention, first processing module receives the channel parameter that receiver sends by physical interface, according to the channel parameter configuration pre-distortion algorithm that receives, digital signal to the needs emission is carried out pre-distortion, this digital signal is converted to analog signal, and modulation module is light signal again with this analog signal conversion and launches by fiber channel; The light-to-current inversion module is receiving optical signals from this fiber channel, and the light signal that receives is converted to analog signal, and second processing module estimates the channel parameter of fiber channel and sends to transmitter by physical interface according to the analog signal of conversion.So second processing module estimates the channel parameter of the fiber channel after the variation and sends to transmitter by physical interface when fiber channel changes, so make transmitter can discern the variation of fiber channel apace, improved the flexibility of optical module device.
Description of drawings
Fig. 1 is a kind of optical module device schematic diagram that prior art provides;
Fig. 2 is first kind of optical module device schematic diagram that the embodiment of the invention 1 provides;
Fig. 3 is second kind of optical module device schematic diagram that the embodiment of the invention 1 provides;
Fig. 4 is the method flow diagram of a kind of receiving and transmitting signal of providing of the embodiment of the invention 2.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
As shown in Figure 2, the embodiment of the invention provides a kind of optical module device, comprising:
Light-to-current inversion module 21 is used for from this fiber channel receiving optical signals, and the light signal that receives is converted to analog signal, and the analog signal of conversion is exported to second processing module 22;
Wherein, the optical module device sends and receiving optical signals by same fiber channel.Light-to-current inversion module 21 receiving optical signals from this fiber channel, send to second processing module 22 after this light signal is converted to analog signal, second processing module 22 estimates the channel parameter of fiber channel according to the analog signal of conversion, by physical interface the estimated channel parameter is sent to transmitter 1, transmitter 1 is again according to this channel parameter configuration pre-distortion algorithm.So, when this fiber channel changes, second processing module 22 can estimate the channel parameter of this fiber channel immediately and send to device for sending and receiving 1 by physical interface, makes the variation that the optical module device can the real-time perception fiber channel, thereby has improved flexibility.In addition, also having avoided transmitter 1 to dispose the pre-distortion algorithm by the preceding channel parameter of fiber channel variation makes a mistake.
Further, first processing module 11 comprises emission DSP (Digital Signal Processing, Digital Signal Processing) unit 111 and digital signal converting unit 112, and emission DSP unit 111 electrically connects with digital signal converting unit 112;
Digital signal converting unit 112 is used for this digital signal is converted to analog signal, again this analog signal is exported to modulation module 12.
Wherein, emission DSP unit 111 can be dsp chip, and digital signal converting unit 112 can be DAC (Digital-to-Analog Converter, digital analog converter).First processing module 11 can be the chip of the DSP+DAC of an integrated DSP chip and DAC, also the circuit that can be made up of dsp chip and DAC.
Wherein, channel parameter comprises the abbe number and the non linear coefficient of fiber channel at least, pre-distortion coefficients comprises chromatic dispersion pre-distortion coefficients and nonlinear effect pre-distortion coefficients at least, and pre-distortion comprises chromatic dispersion pre-distortion and nonlinear effect pre-distortion at least.
Correspondingly, first processing module 11 receives abbe number and the non linear coefficient that receiver 2 sends by physical interface, according to abbe number configuration chromatic dispersion pre-distortion coefficients, according to non linear coefficient configuration nonlinear effect pre-distortion coefficients, chromatic dispersion pre-distortion coefficients according to configuration is carried out the chromatic dispersion pre-distortion to the digital signal that needs send, and according to the nonlinear effect pre-distortion coefficients of configuration the digital signal that needs send is carried out the nonlinear effect pre-distortion.
Further, modulation module 12 comprises amplifying unit 121 and modulating unit 122, and amplifying unit 121 electrically connects with modulating unit 122;
Amplifying unit 121 is used to receive the analog signal that first processing module 11 is exported, and this analog signal is amplified, and amplified analog signal is exported to modulating unit 122;
Modulating unit 122 is used for by amplified analog signal is carried out modulation treatment amplified analog signal being converted to light signal, by the light signal of fiber channel emission conversion.
Wherein, amplifying unit 121 can be DRV (Driver, driver), and modulating unit 122 can be TLD (Tunable Laser Diode tunable laser).
Further, second processing module 22 comprises analog signal conversion unit 221 and receives DSP unit 222 that analog signal conversion unit 221 electrically connects with reception DSP unit 222;
Analog signal conversion unit 221 is used to receive the analog signal that light-to-current inversion module 21 is exported, and is digital signal with this analog signal conversion, the digital signal of conversion is exported to received DSP unit 222;
Receive DSP unit 222, be used for the digital signal of conversion being estimated, obtain the channel parameter of fiber channel, and the channel parameter that obtains is sent to transmitter 1 by physical interface by channel estimation method.
Wherein, receive DSP unit 222 and can be dsp chip, analog signal conversion unit 221 can be ADC (Analog-to-Digital Converter, analog-digital converter).Second processing module 22 can be the chip of the ADC+DSP of an integrated DSP chip and ADC, also the circuit that can be made up of dsp chip and ADC.
Further, emission DSP unit 111 also is used for by physical interface the pre-distortion coefficients that disposes being sent to receiver 2;
Correspondingly,
Receive DSP unit 222, also be used for pre-distortion coefficients by 1 transmission of physical interface receiver/transmitter, according to the pre-distortion coefficients configuration signal backoff algorithm that receives, the digital signal of analog signal conversion unit 221 being exported by the signal compensation algorithm of configuration compensates processing.
Wherein, compensation deals comprise chromatic dispersion compensating function, polarization demultiplexing, PMD (Polarization ModeDispersion, polarization mode dispersion) compensate function, clock synchronization function, compensate of frequency deviation and/or phase place restore funcitons.
Wherein, receive the dispersion compensation parameter of DSP unit 222 according to chromatic dispersion pre-distortion coefficients configuration backoff algorithm, nonlinear compensation parameter according to nonlinear effect pre-distortion coefficients configuration backoff algorithm, according to dispersion compensation parameter and nonlinear compensation parameter, the digital signal to 221 outputs of analog signal conversion unit is compensated processing by backoff algorithm.
Wherein, in the present embodiment, first processing module 11 and second processing module 22 can be integrated in the chip piece, also can be positioned on two different chips.If first processing module 11 and second processing module 22 are integrated in the chip piece, then the physical interface between transmitter 1 and the receiver 2 can be the chip internal connecting line; If first processing module 11 is positioned on two different chips with second processing module 22, then the physical interface between transmitter 1 and the receiver 2 can be PCB (PrintedCircuitBoard, printed circuit board) lead-in wire.
Further, as shown in Figure 3, transmitter 1 also comprises FEC (Forward Error Correction, forward error correction) coding module 13, and FEC coding module 13 links to each other with first treatment of simulated 11;
Correspondingly, receiver 1 also comprises FEC decoding module 23, and FEC decoding module 23 links to each other with second processing module 22;
Further, emission DSP unit 111 also is used for receiving the signal to noise ratio and the error rate that receiver 2 sends by physical interface, determines modulation format according to the signal to noise ratio and the error rate that receive, by physical interface the modulation format of determining is sent to receiver 2.
Correspondingly,
Receive DSP unit 222, also be used for modulation format by 1 transmission of physical interface receiver/transmitter, according to the modulation format that receives, by the digital signal of analog signal conversion unit 221 outputs is calculated, obtain the signal to noise ratio and the error rate of fiber channel, and the signal to noise ratio and the error rate that obtains sent to transmitter 1 by physical interface.
Wherein, emission DSP unit 111 can also send to the modulation format of determining the modulating unit 122 of modulation module 12, and modulating unit 122 receives this modulation format, according to this modulation system form amplified analog signal is modulated.
Wherein, in this enforcement, first processing module 11 and FEC coding module 13 can be integrated on the chip piece, also can be positioned on two different chips; Second processing module 22 and FEC decoding module 23 can be integrated on the chip piece, also can be positioned on two different chips.
In embodiments of the present invention, first processing module receives the channel parameter that receiver sends by physical interface, according to the channel configuration pre-distortion algorithm that receives, digital signal to the needs emission is carried out pre-distortion, and with this digital signal converting analogue signals, modulation module is light signal again with this analog signal and launches by fiber channel; The light-to-current inversion module is receiving optical signals from this fiber channel, and the light signal that receives is converted to analog signal, and second treatment circuit estimates the channel parameter of fiber channel and sends to transmitter by physical interface according to the analog signal of conversion.So second processing module estimates the channel parameter of the fiber channel after the variation and sends to transmitter by physical interface when fiber channel changes, and so makes transmitter can discern the variation of fiber channel apace, has improved flexibility.
The embodiment of the invention provides the method for the optical module device receiving and transmitting signal of a kind of embodiment of utilization 1.Wherein, in the present embodiment, adopt the optical module device to comprise transmitter and receiver, and connect by physical interface between the transmitter and receiver, referring to Fig. 4, this method comprises:
Step 201: transmitter receives the channel parameter that receiver sends by physical interface; According to the channel parameter configuration pre-distortion algorithm that receives, pre-distortion algorithm by configuration carries out pre-distortion to the digital signal of needs emission, the light signal that the digital signal that needs are launched is converted to light signal and changes by the fiber channel emission;
Wherein, after the digital signal that transmitter is launched needs by the pre-distortion algorithm of configuration is carried out pre-distortion, the digital signal of needs emission is converted to analog signal, is light signal by the analog signal conversion that the analog signal of conversion is modulated conversion.
Step 202: receiver is receiving optical signals from this fiber channel, and the light signal that receives is converted to digital signal, estimates the channel parameter of this fiber channel by physical interface the estimated channel parameter to be sent to transmitter according to the digital signal of conversion.
Wherein, step 202 can be specially: receiver is receiving optical signals from this fiber channel, and the light signal that receives is converted to digital signal; According to the digital signal of conversion, estimate the channel parameter of this fiber channel the estimated channel parameter to be sent to transmitter by physical interface by channel estimation method.
Wherein, receiver receives light signal from this fiber channel after, earlier the light signal that receives is converted to analog signal, the analog signal conversion with conversion is a digital signal again.
Wherein, step 201 can be specially:
Transmitter receives the channel parameter that receiver sends by physical interface, according to the pre-distortion coefficients of the channel parameter configuration pre-distortion algorithm that receives; According to the pre-distortion coefficients of configuration, the digital signal that needs send is carried out pre-distortion by the pre-distortion algorithm;
Transmitter is converted to analog signal with this digital signal, and the analog signal with conversion is modulated into light signal and launches by fiber channel again.
Wherein, transmitter can also amplify earlier the analog signal of conversion, again amplified analog signal is converted to light signal, by fiber channel the light signal of conversion is launched again.
Further, step 201 also comprises:
Transmitter sends to receiver by physical interface with the pre-distortion coefficients that disposes;
Correspondingly,
Step 202 also comprises:
Receiver receives pre-distortion coefficients by physical interface, and the pre-distortion coefficients configuration backoff algorithm according to receiving compensates processing by the backoff algorithm that disposes to the digital signal of changing.
Further, step 201 also comprises:
Transmitter is determined modulation format according to the signal to noise ratio and the error rate of this fiber channel, and is sent definite modulation format to receiver by physical interface by the signal to noise ratio and the error rate of this fiber channel of physical interface reception receiver transmission;
Correspondingly,
Step 202 also comprises:
The modulation format that receiver sends by the physical interface receiver/transmitter, according to the modulation format that receives the digital signal of conversion is calculated the signal to noise ratio and the error rate of this fiber channel, send the signal to noise ratio that calculates and the error rate to transmitter by physical interface.
Further, step 201 also comprises:
Transmitter carries out the FEC coding to the digital signal of needs emission, and the coding expense that will adopt sends to receiver by physical interface;
Correspondingly, step 202 also comprises:
Receiver sends the coding expense by the physical interface receiver/transmitter, according to received code expense configuration FEC decoding algorithm, by the FEC decoding algorithm digital signal of conversion is carried out FEC decoding and handles.
Wherein, physical interface is printing board PCB lead-in wire or chip internal connecting line.
In embodiments of the present invention, transmitter receives the channel parameter that receiver sends by physical interface, according to the channel configuration pre-distortion algorithm that receives, digital signal to the needs emission is carried out pre-distortion, and radiating circuit is converted to light signal with this digital signal and launches by fiber channel; Receiver is receiving optical signals from this fiber channel, and the light signal that receives is converted to digital signal, estimates the channel parameter of fiber channel and sends to transmitter by physical interface according to the digital signal of changing.So receiver estimates the channel parameter of the fiber channel after the variation and sends to transmitter by physical interface when fiber channel changes, and so makes transmitter can discern the variation of fiber channel apace, has improved flexibility.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. an optical module device is characterized in that, described optical module device comprises:
Transmitter and receiver, described transmitter links to each other by physical interface with described receiver;
Described transmitter comprises first processing module and modulation module, and described first processing module links to each other with modulation module; Described receiver comprises the light-to-current inversion module and second processing module, and described light-to-current inversion module links to each other with second processing module;
Described first processing module, be used for receiving the channel parameter that described receiver sends by described physical interface, according to described channel parameter configuration pre-distortion algorithm, by described pre-distortion algorithm the digital signal of needs emission is carried out pre-distortion, described digital signal is converted to analog signal and exports to described modulation module;
Described modulation module is used for analog signal conversion with the output of described first processing module and is light signal and launches described light signal by fiber channel;
Described light-to-current inversion module is used for from described fiber channel receiving optical signals described light signal being converted to analog signal, and described analog signal is exported to described second processing module;
Described second processing module is used for the analog signal according to described light-to-current inversion module output, estimates the channel parameter of described fiber channel, and described estimated channel parameter is sent to described transmitter by described physical interface.
2. optical module device as claimed in claim 1 is characterized in that, described second processing module comprises analog signal conversion unit and receiving digital signals processing DSP unit, and described analog signal conversion unit and described reception DSP unit electrically connect;
Described analog signal conversion unit is used to receive the analog signal of described light-to-current inversion module output, is digital signal with the analog signal conversion of described reception, and the digital signal of described conversion is exported to described reception DSP unit;
Described reception DSP unit is used for by described channel estimation method the digital signal of described conversion being estimated, obtains the channel parameter of described fiber channel, and the channel parameter of described acquisition is sent to described transmitter by described physical interface.
3. optical module device as claimed in claim 1 is characterized in that, described first processing module comprises emission DSP unit and digital signal converting unit, and described emission DSP unit and described digital signal converting unit electrically connect;
Described emission DSP unit is used for receiving the channel parameter that described receiver sends by described physical interface, according to the pre-distortion coefficients of described channel parameter configuration pre-distortion algorithm; According to described pre-distortion coefficients, by described pre-distortion algorithm the described digital signal that needs send is carried out pre-distortion, more described digital signal is exported to described digital signal converting unit;
Described digital signal converting unit is used for described digital signal is converted to analog signal, more described analog signal is exported to described modulation module.
4. optical module device as claimed in claim 3 is characterized in that,
Described emission DSP unit also is used for by described physical interface described pre-distortion coefficients being sent to described receiver;
Correspondingly,
Described reception DSP unit also is used for receiving described pre-distortion coefficients by described physical interface, and according to described pre-distortion coefficients configuration signal backoff algorithm, the digital signal of the analog signal conversion unit being exported by described signal compensation algorithm compensates processing.
5. optical module device as claimed in claim 1 is characterized in that,
Described emission DSP unit, also be used for receiving the signal to noise ratio and the error rate of the described fiber channel of described receiver transmission by described physical interface, the signal to noise ratio and the error rate according to described fiber channel are determined modulation format, and send described modulation format to described receiver by described physical interface;
Correspondingly,
Described reception DSP unit, also be used for receiving the modulation format that described transmitter sends by described physical interface, according to described modulation format the digital signal of analog signal conversion unit output is calculated the signal to noise ratio and the error rate of described fiber channel, send described signal to noise ratio and the error rate to described transmitter by described physical interface.
6. optical module device as claimed in claim 1 is characterized in that, described receiver also comprises forward error correction FEC coding module, and described FEC coding module links to each other with described first processing module;
Correspondingly, described transmitter also comprises the FEC decoding module, and described FEC decoding module links to each other with described second processing module;
Described FEC coding module be used for the described digital signal of described needs emission is carried out the FEC coding, and the coding expense that will adopt sends to described receiver by described physical interface;
Described FEC decoding module, be used for receiving the coding expense that described transmitter sends by described physical interface, according to described coding expense configuration FEC decoding algorithm, from described second processing module, obtain digital signal, by described FEC decoding algorithm the described digital signal of obtaining is carried out FEC decoding and handle.
7. as the described optical module device of each claim of claim 1-6, it is characterized in that described physical interface is printing board PCB lead-in wire or chip internal connecting line.
8. a method of utilizing the described optical module device of claim 1 receiving and transmitting signal is characterized in that, described optical module device comprises transmitter and receiver, and connects by physical interface between described transmitter and the described receiver, and described method comprises:
Steps A: described transmitter receives the channel parameter that described receiver sends by described physical interface; According to described channel parameter configuration pre-distortion algorithm, by described pre-distortion algorithm the digital signal of needs emission is carried out pre-distortion, the described digital signal of emission that needs is converted to light signal and launches described light signal by fiber channel;
Step B: described receiver is receiving optical signals from described fiber channel, described light signal is converted to digital signal, estimate the channel parameter of described fiber channel described estimated channel parameter to be sent to described transmitter according to the digital signal of described conversion by described physical interface.
9. method as claimed in claim 8 is characterized in that, described step B comprises:
Described receiver is receiving optical signals from described fiber channel, and the light signal of described reception is converted to digital signal;
Described receiver is according to the digital signal of described conversion, estimates the channel parameter of described fiber channel described estimated channel parameter to be sent to described transmitter by described physical interface by channel estimation method.
10. method as claimed in claim 8 is characterized in that, described steps A comprises:
Described transmitter receives the channel parameter that described receiver sends by described physical interface, according to the pre-distortion coefficients of described channel parameter configuration pre-distortion algorithm; According to described pre-distortion coefficients, the described digital signal of emission that needs is carried out pre-distortion by described pre-distortion algorithm;
Described transmitter is converted to analog signal with described digital signal, more described analog signal is modulated into light signal and launches by described fiber channel.
11. method as claimed in claim 10 is characterized in that, described steps A also comprises:
Described transmitter sends to described receiver by described physical interface with described pre-distortion coefficients;
Correspondingly,
Described step B also comprises:
Described receiver receives described pre-distortion coefficients by described physical interface, according to described pre-distortion coefficients configuration backoff algorithm, by described backoff algorithm the digital signal of described conversion is compensated processing.
12. method as claimed in claim 8 is characterized in that, described steps A also comprises:
Described transmitter receives the signal to noise ratio and the error rate of the described fiber channel of described receiver transmission by described physical interface, the signal to noise ratio and the error rate according to described fiber channel are determined modulation format, and send described modulation format to described receiver by described physical interface;
Correspondingly,
Described step B also comprises:
Described receiver receives the modulation format that described transmitter sends by described physical interface, according to described modulation format the digital signal of described conversion is calculated the signal to noise ratio and the error rate of described fiber channel, send described signal to noise ratio and the error rate to described transmitter by described physical interface.
13. method as claimed in claim 8 is characterized in that, described steps A also comprises:
Described transmitter carries out forward error correction FEC coding to the described digital signal of emission that needs, and the coding expense that will adopt sends to described receiver by described physical interface;
Correspondingly, described step B also comprises:
Described receiver receives the coding expense that described transmitter sends by described physical interface, according to described coding expense configuration FEC decoding algorithm, by described FEC decoding algorithm the digital signal of described conversion is carried out FEC decoding and handles.
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| CN201110045433.5A CN102136871B (en) | 2011-02-24 | 2011-02-24 | Optical module device and signal receiving and sending method |
| PCT/CN2012/071513 WO2012113339A1 (en) | 2011-02-24 | 2012-02-23 | Optical module device and method for receiving and transmitting signals |
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| WO2016011933A1 (en) * | 2014-07-25 | 2016-01-28 | Huawei Technologies Co., Ltd. | Compensation of non-linear transmitter impairments in optical communication networks |
| CN105846893A (en) * | 2016-03-22 | 2016-08-10 | 武汉电信器件有限公司 | Active optical cable bit error rate detection method and system |
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| CN103281120B (en) * | 2013-05-30 | 2015-10-14 | 华中科技大学 | A kind of optical signal modulation format identification method and system |
| CN103414517B (en) * | 2013-07-22 | 2016-08-10 | 华中科技大学 | A kind of optical signal rate recognition methods and system |
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| WO2016011933A1 (en) * | 2014-07-25 | 2016-01-28 | Huawei Technologies Co., Ltd. | Compensation of non-linear transmitter impairments in optical communication networks |
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| US9838133B2 (en) | 2014-07-25 | 2017-12-05 | Futurewei Technologies, Inc. | Compensation of non-linear transmitter impairments in optical communication networks |
| CN106537817B (en) * | 2014-07-25 | 2019-04-12 | 华为技术有限公司 | The damage compensation of non-linear transmitter in optical communication network |
| CN105846893A (en) * | 2016-03-22 | 2016-08-10 | 武汉电信器件有限公司 | Active optical cable bit error rate detection method and system |
| CN105846893B (en) * | 2016-03-22 | 2018-03-30 | 武汉电信器件有限公司 | Active Optical Fiber bit error rate detection method and system |
| CN116805889A (en) * | 2023-08-21 | 2023-09-26 | 深圳市光为光通信科技有限公司 | Optical fiber transceiver module based on CPO technology |
| CN116805889B (en) * | 2023-08-21 | 2023-11-10 | 深圳市光为光通信科技有限公司 | Optical fiber transceiver module based on CPO technology |
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| Publication number | Publication date |
|---|---|
| CN102136871B (en) | 2014-04-02 |
| WO2012113339A1 (en) | 2012-08-30 |
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