CN102938650A - Signal compensation method, serializer and deserializer - Google Patents

Abstract

Embodiments of the present invention provide a method for compensating a signal, a serializer, and a deserializer. The method includes: obtaining a first temperature used to characterize the temperature of the transmission medium, and the two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer; according to the first temperature and the first temperature and the first temperature The corresponding relationship of the coefficients determines the coefficients; the amplitude of the first electrical signal or the second electrical signal is compensated according to the coefficients, the first electrical signal is an electrical signal to be transmitted through the transmission medium; the second electrical signal is an electrical signal that has been transmitted through the transmission medium electrical signal. The above technical solution can compensate the electrical signal according to the coefficient corresponding to the first temperature used to characterize the temperature of the transmission medium, thereby reducing the bit error rate.

Description

Method for compensating signal, serializer and deserializer

technical field

The embodiments of the present invention relate to communication technologies, and in particular to a signal compensation method, a serializer, and a deserializer.

Background technique

A serializer-deserializer (Serializer/Deserializer, SERDES) is a device for converting electrical signals. SERDES includes serializer and deserializer. A transmission medium for transmitting electrical signals is included between the serializer and the deserializer. When the electrical signal is transmitted through the transmission medium, it will be attenuated, which will increase the bit error rate.

Contents of the invention

Embodiments of the present invention provide a method for compensating a signal, a serializer and a deserializer, which can compensate an electrical signal, thereby reducing a bit error rate.

In the first aspect, a method for compensating a signal is provided, including:

Acquiring a first temperature used to characterize the temperature of the transmission medium, the two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer; according to the first temperature and the second A correspondence relationship between temperature and the coefficient determines the coefficient; according to the coefficient, the amplitude of the first electric signal or the second electric signal is compensated, and the first electric signal is an electric signal to be transmitted through the transmission medium; The second electrical signal is an electrical signal that has been transmitted through the transmission medium.

In a first possible implementation manner of the first aspect, the compensating the amplitude of the first electrical signal according to the coefficient is specifically that the pre-emphasis unit in the serializer Pre-emphasis compensation is performed on the amplitude of the first electrical signal, and the coefficient is the pre-emphasis coefficient; or the compensation of the amplitude of the second electrical signal according to the coefficient is specifically an equalization unit in the deserializer. Perform equalization compensation on the amplitude of the second electrical signal according to an equalization coefficient, where the coefficient is an equalization coefficient.

According to the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, the compensating the amplitude of the first electrical signal according to the coefficient further includes the pre-emphasis The unit pre-emphasizes and compensates the dispersion of the first electrical signal according to the pre-emphasis coefficient.

According to the first possible implementation of the first aspect or the second possible implementation of the first aspect, in the third possible implementation of the first aspect, the The correspondence between the first temperature and the coefficient determining the coefficient includes:

a coefficient providing unit determines the pre-emphasis coefficient;

The compensating the amplitude of the first electrical signal according to the coefficient includes:

The pre-emphasis unit determines the pre-emphasis coefficient according to the coefficient providing unit after the serializer sends the first bit of the electrical signal and before the serializer starts sending the second bit of the electrical signal performing the pre-emphasis compensation on the amplitude of the electrical signal of the second bit, the electrical signal of the first bit and the electrical signal of the second bit being two adjacent electrical signals in the first electrical signal .

In a second aspect, a serializer is provided, including:

The acquiring unit is configured to acquire a first temperature used to characterize the temperature of the transmission medium, and the two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer; the determination unit is configured to Determine the coefficient according to the first temperature acquired by the acquisition unit and the corresponding relationship between the first temperature and the coefficient; the compensation unit is configured to compensate the amplitude of the first electrical signal according to the coefficient determined by the determination unit, the The first electrical signal is an electrical signal to be transmitted through the transmission medium.

In a first possible implementation manner of the second aspect, the compensation unit is specifically a pre-emphasis unit, configured to perform pre-emphasis compensation on the amplitude of the first electrical signal according to a pre-emphasis coefficient, the coefficient being the pre-emphasis factor.

According to the first possible implementation manner of the second aspect, in the second possible implementation manner of the second aspect, the pre-emphasis unit is further configured to adjust the dispersion of the first electrical signal according to the pre-emphasis coefficient Perform pre-emphasis compensation.

According to the first possible implementation of the second aspect or the second possible implementation of the second aspect, in the third possible implementation of the second aspect, the determining unit is specifically a coefficient providing unit, using for determining said pre-emphasis factor;

The pre-emphasis unit is specifically configured to, according to the pre-emphasis coefficient determined by the coefficient providing unit, after the serializer finishes sending the first bit of the electrical signal, and after the serializer starts sending the second bit performing the pre-emphasis compensation on the amplitude of the electrical signal of the second bit before the electrical signal, and the electrical signal of the first bit and the electrical signal of the second bit are two adjacent electrical signals in the first electrical signal an electrical signal.

In a third aspect, a deserializer is provided, including:

The acquiring unit is configured to acquire a first temperature used to characterize the temperature of the transmission medium, and the two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer; the determination unit is configured to Determine the coefficient according to the first temperature acquired by the acquisition unit and the corresponding relationship between the first temperature and the coefficient; the compensation unit is configured to compensate the amplitude of the second electrical signal according to the coefficient determined by the determination unit, the The second electrical signal is an electrical signal that has been transmitted through the transmission medium.

In a first possible implementation manner of the third aspect, the compensation unit is specifically an equalization unit, configured to perform equalization compensation on the amplitude of the second electrical signal according to an equalization coefficient, where the coefficient is an equalization coefficient.

In the above technical solution, the electrical signal can be compensated according to the coefficient corresponding to the first temperature used to characterize the temperature of the transmission medium, thereby reducing the bit error rate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a flowchart of a method for compensating a signal provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a serializer provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a deserializer provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another serializer provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a flowchart of a method for compensating a signal provided by an embodiment of the present invention. As shown in Fig. 1, the method includes:

S110. Acquire a first temperature used to characterize the temperature of the transmission medium, where two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer.

For example, the serializer or the deserializer may acquire the first temperature through a temperature sensor. For example, the first temperature may be the temperature of the transmission medium. The transmission medium may be a cable or a copper wire in a printed circuit board (PCB for short). The first temperature may also be the temperature of the serializer or the deserializer. The first temperature may also be the temperature of the environment where the transmission medium is located. The environment can be air or polytetrafluoroethylene.

For example, the serializer and the deserializer may be chips. If the serializer or the deserializer is a chip, the temperature sensor used to obtain the first temperature may be disposed inside the chip corresponding to the serializer or inside the chip corresponding to the deserializer. Of course, the first temperature may also be obtained by using a temperature sensor integrated in the transmission medium. The embodiment of the present invention does not limit the manner of obtaining the first temperature.

S120. Determine the coefficient according to the first temperature and the corresponding relationship between the first temperature and the coefficient.

For example, after the first temperature is acquired, the coefficient corresponding to the first temperature may be searched according to the correspondence relationship. The corresponding relationship may be a fixed corresponding relationship, or a dynamically adjustable corresponding relationship.

The correspondence can be represented by a discrete or linear function, or by a correspondence table.

S130. Compensate the amplitude of the first electrical signal or the second electrical signal according to the coefficient, the first electrical signal is an electrical signal to be transmitted through the transmission medium; the second electrical signal is an electrical signal that has passed through the transmission medium The electrical signal transmitted by the transmission medium mentioned above.

Those skilled in the art can understand that the first electrical signal or the second electrical signal may include low frequency components and high frequency components. Wherein, the high-frequency component is an X-order harmonic, and X is an odd number greater than 1. For example, compensating the amplitude of the first electrical signal or the second electrical signal according to the coefficient may specifically be to compensate the amplitude of the high-frequency component in the first electrical signal or the second electrical signal Make compensation.

In the above technical solution, the first electrical signal or the second electrical signal is compensated according to the coefficient corresponding to the first temperature used to characterize the temperature of the transmission medium, thereby reducing the bit error rate .

Optionally, in the method shown in FIG. 1 , the compensating the amplitude of the first electrical signal according to the coefficient is specifically that the pre-emphasis unit in the serializer performing pre-emphasis compensation on the amplitude of the electrical signal, and the coefficient is the pre-emphasis coefficient; or

Compensating the amplitude of the second electrical signal according to the coefficient is specifically that the equalization unit in the deserializer performs equalization compensation on the amplitude of the second electrical signal according to an equalization coefficient, and the coefficient is an equalization coefficient .

For example, the pre-emphasis unit may be a hardware unit in a chip corresponding to the serializer. The equalization unit may be a hardware unit in a chip corresponding to the deserializer.

Optionally, in the method shown in FIG. 1 , the compensating the amplitude of the first electrical signal according to the coefficient may further include the pre-emphasis unit adjusting the amplitude of the first electrical signal according to the pre-emphasis coefficient. The dispersion is pre-emphasized to compensate.

Optionally, in the method shown in FIG. 1 , determining the coefficient according to the first temperature and the corresponding relationship between the first temperature and the coefficient includes: determining the pre-emphasis coefficient by a coefficient providing unit;

The compensating the amplitude of the first electrical signal according to the coefficient includes: the pre-emphasis unit determines the pre-emphasis coefficient determined by the coefficient providing unit after the serializer sends the first bit After the signal, and before the serializer starts to transmit the second bit electrical signal, the pre-emphasis compensation is performed on the amplitude of the second bit electrical signal, the first bit electrical signal and the second The bit electrical signals are two adjacent electrical signals in the first electrical signal.

Those skilled in the art can understand that, when the serializer sends electrical signals of multiple bits, it needs to send them bit by bit. In addition, the serializer needs to go through a process for performing an operation of sending an electrical signal of one bit, and the process requires a certain length of time. Specifically, the serializer needs to adjust the potential to the potential corresponding to the bit to be sent, and keep it for a predetermined length of time. In the above technical solution, after the serializer finishes sending the first-bit electrical signal, and before the serializer starts sending the second-bit electrical signal, the second-bit electrical signal Performing the pre-emphasis compensation on the amplitude can improve the correctness of signal transmission.

In the above technical solution, the electrical signal is compensated according to the pre-emphasis coefficient or the equalization coefficient corresponding to the first temperature used to characterize the temperature of the transmission medium, thereby reducing the bit error rate.

FIG. 2 is a schematic structural diagram of a serializer provided by an embodiment of the present invention, and the serializer can execute the method shown in FIG. 1 . As shown in FIG. 2, the serializer 200 may include:

The acquiring unit 210 is configured to acquire a first temperature used to characterize the temperature of the transmission medium, and the two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer;

A determination unit 220, configured to determine the coefficient according to the first temperature acquired by the acquisition unit 210 and the corresponding relationship between the first temperature and the coefficient;

The compensating unit 230 is configured to compensate the amplitude of the first electrical signal according to the coefficient determined by the determining unit 220, where the first electrical signal is an electrical signal to be transmitted through the transmission medium.

Optionally, in the serializer 200 shown in FIG. 2 , the compensation unit 230 is specifically a pre-emphasis unit, configured to perform pre-emphasis compensation on the amplitude of the first electrical signal according to a pre-emphasis coefficient, and the coefficient is The pre-emphasis factor.

Optionally, in the serializer 200 shown in FIG. 2 , the pre-emphasis unit is further configured to perform pre-emphasis compensation on dispersion of the first electrical signal according to the pre-emphasis coefficient.

Optionally, in the serializer 200 shown in FIG. 2, the determining unit 220 is specifically a coefficient providing unit, configured to determine the pre-emphasis coefficient;

The pre-emphasis unit is specifically configured to, according to the pre-emphasis coefficient determined by the coefficient providing unit, after the serializer finishes sending the first bit of the electrical signal, and after the serializer starts sending the second bit performing the pre-emphasis compensation on the amplitude of the electrical signal of the second bit before the electrical signal, and the electrical signal of the first bit and the electrical signal of the second bit are two adjacent electrical signals in the first electrical signal an electrical signal.

In the above technical solution, pre-emphasis compensation is performed on the amplitude or dispersion of the electrical signal to be transmitted through the transmission medium according to the pre-emphasis coefficient corresponding to the first temperature used to represent the temperature of the transmission medium, thereby reducing the bit error rate.

FIG. 3 is a schematic structural diagram of a deserializer provided by an embodiment of the present invention, and the deserializer can execute the method shown in FIG. 1 . As shown in Figure 3, the deserializer 300 includes:

An acquisition unit 310, configured to acquire a first temperature used to characterize the temperature of the transmission medium, and the two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer;

A determination unit 320, configured to determine the coefficient according to the first temperature acquired by the acquisition unit 310 and the corresponding relationship between the first temperature and the coefficient;

The compensating unit 330 is configured to compensate the amplitude of the second electrical signal according to the coefficient determined by the determining unit 320, where the second electrical signal is an electrical signal that has been transmitted through the transmission medium.

Optionally, in the deserializer 300 shown in FIG. 3 , the compensation unit 330 is specifically an equalization unit, configured to perform equalization compensation on the amplitude of the second electrical signal according to an equalization coefficient, where the coefficient is an equalization coefficient.

In the above technical solution, the electrical signal that has been transmitted through the transmission medium is equalized and compensated according to the equalization coefficient corresponding to the first temperature used to characterize the temperature of the transmission medium, thereby reducing the bit error rate.

FIG. 4 is a schematic structural diagram of another serializer provided by an embodiment of the present invention, and the serializer can execute the method described in FIG. 1 . As shown in FIG. 4, the serializer 400 includes:

FIFO memory 410 , encoder 420 , serial unit 430 , driver 440 , phase locked loop 450 , tap C ₋₁ , tap C ₀ , tap C ₁ , and coefficient supply unit 460 . Specifically: the coefficient providing unit 460 may pre-emphasize and supplement the electrical signal to be transmitted through the serializer 400 through the tap C ₋₁ , the tap C ₀ , and the tap C ₁ . The coefficient providing unit 460 may include: a temperature sensor 462 , a determiner 464 and a compensator 466 .

A temperature sensor 462, configured to obtain a first temperature used to characterize the temperature of the transmission medium, and the two ends of the transmission medium are respectively used to connect the serializer and the deserializer in the serializer-deserializer;

A determiner 464, configured to determine a coefficient according to the first temperature acquired by the temperature sensor 462 and the corresponding relationship between the first temperature and the coefficient;

The compensator 466 is configured to compensate the amplitude of the first electrical signal according to the coefficient determined by the determiner 464, where the first electrical signal is an electrical signal to be transmitted through the transmission medium.

In the above technical solution, the electrical signal to be transmitted through the transmission medium is compensated according to the coefficient corresponding to the first temperature used to characterize the temperature of the transmission medium, thereby reducing the bit error rate.

Optionally, the compensator 466 is specifically a pre-emphasis unit, configured to perform pre-emphasis compensation on the amplitude of the first electrical signal according to a pre-emphasis coefficient, where the coefficient is a pre-emphasis coefficient.

Optionally, the pre-emphasis unit is further configured to perform pre-emphasis compensation on dispersion of the first electrical signal according to the pre-emphasis coefficient.

Optionally, the determiner 464 is specifically a coefficient providing unit, and the coefficient providing unit is configured to determine the pre-emphasis coefficient;

The pre-emphasis unit determines the pre-emphasis coefficient according to the coefficient providing unit after the serializer sends the first bit of the electrical signal and before the serializer starts sending the second bit of the electrical signal performing the pre-emphasis compensation on the amplitude of the electrical signal of the second bit, the electrical signal of the first bit and the electrical signal of the second bit being two adjacent electrical signals in the first electrical signal .

In the above technical solution, pre-emphasis compensation is performed on the amplitude or dispersion of the electrical signal to be transmitted through the transmission medium according to the pre-emphasis coefficient corresponding to the first temperature used to represent the temperature of the transmission medium, thereby reducing the bit error rate.

The method for compensating signals, the serializer, and the deserializer provided in the embodiments of the present invention can compensate the electrical signal according to the coefficient corresponding to the first temperature used to characterize the temperature of the transmission medium, thereby reducing the bit error rate .

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units may only be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (abbreviated as ROM in English, full name in English as Read-Only Memory), random access memory (abbreviated as RAM in English, full name in English as Random Access Memory), magnetic Various media that can store program codes such as discs or optical discs.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. the method that signal is compensated is characterized in that, comprising:

Obtain the first temperature for the temperature that characterizes transmission medium, the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES;

Corresponding relation according to described the first temperature and described the first temperature and coefficient is determined described coefficient;

Compensate according to the amplitude of described coefficient to first signal of telecommunication or second signal of telecommunication, described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium; The signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium.

2. method according to claim 1 is characterized in that,

The described pre-emphasis unit that is specially in the described serializer of the amplitude of described first signal of telecommunication being compensated according to described coefficient is carried out the preemphasis compensation according to pre emphasis factor to the amplitude of described first signal of telecommunication, and described coefficient is described pre emphasis factor; Perhaps

The described balanced unit that is specially in the described deserializer of the amplitude of described second signal of telecommunication being compensated according to described coefficient carries out isostatic compensation according to equalizing coefficient to the amplitude of described second signal of telecommunication, and described coefficient is equalizing coefficient.

3. method according to claim 2 is characterized in that,

The described amplitude of described first signal of telecommunication being compensated according to described coefficient comprises that also described pre-emphasis unit carries out the preemphasis compensation according to described pre emphasis factor to the dispersion of described first signal of telecommunication.

4. according to claim 2 or 3 described methods, it is characterized in that,

Described described corresponding relation according to described the first temperature and described the first temperature and coefficient determines that described coefficient comprises:

Coefficient provides the unit to determine described pre emphasis factor;

The described amplitude of described first signal of telecommunication being compensated according to described coefficient comprises:

The described pre emphasis factor that described pre-emphasis unit provides the unit to determine according to described coefficient is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.

5. a serializer is characterized in that, comprising:

Acquiring unit is used for obtaining the first temperature for the temperature that characterizes transmission medium, and the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES;

Determining unit is determined described coefficient for the first temperature of obtaining according to described acquiring unit and the corresponding relation of described the first temperature and coefficient;

Compensating unit is used for the coefficient determined according to described determining unit the amplitude of first signal of telecommunication is compensated, and described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium.

6. serializer according to claim 5 is characterized in that,

Described compensating unit is specially pre-emphasis unit, is used for according to pre emphasis factor the amplitude of described first signal of telecommunication being carried out the preemphasis compensation, and described coefficient is described pre emphasis factor.

7. serializer according to claim 6 is characterized in that,

Described pre-emphasis unit also is used for according to described pre emphasis factor the preemphasis compensation being carried out in the dispersion of described first signal of telecommunication.

8. according to claim 6 or 7 described serializers, it is characterized in that,

Described determining unit is specially coefficient the unit is provided, and is used for determining described pre emphasis factor;

The concrete described pre emphasis factor for providing the unit to determine according to described coefficient of described pre-emphasis unit is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.

9. a deserializer is characterized in that, comprising:

Acquiring unit is used for obtaining the first temperature for the temperature that characterizes transmission medium, and the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES;

Determining unit is determined described coefficient for the first temperature of obtaining according to described acquiring unit and the corresponding relation of described the first temperature and coefficient;

Compensating unit compensates for the amplitude of the coefficient of determining according to described determining unit to second signal of telecommunication, the signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium.

10. deserializer according to claim 9 is characterized in that,

Described compensating unit is specially balanced unit, is used for according to equalizing coefficient the amplitude of described second signal of telecommunication being carried out isostatic compensation, and described coefficient is equalizing coefficient.

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