WO2015100588A1 - 信号处理设备、通信系统及信号处理方法 - Google Patents

信号处理设备、通信系统及信号处理方法 Download PDF

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Publication number
WO2015100588A1
WO2015100588A1 PCT/CN2013/091047 CN2013091047W WO2015100588A1 WO 2015100588 A1 WO2015100588 A1 WO 2015100588A1 CN 2013091047 W CN2013091047 W CN 2013091047W WO 2015100588 A1 WO2015100588 A1 WO 2015100588A1
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WIPO (PCT)
Prior art keywords
pilot
bit sequence
bits
signal
value
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PCT/CN2013/091047
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English (en)
French (fr)
Inventor
邓宁
何俊
冯志勇
罗小东
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380003820.XA priority Critical patent/CN104904151B/zh
Priority to PCT/CN2013/091047 priority patent/WO2015100588A1/zh
Publication of WO2015100588A1 publication Critical patent/WO2015100588A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication

Definitions

  • Signal processing device communication system, and signal processing method
  • the present application relates to the field of communication technologies, and in particular, to a signal processing device, a communication system, and a signal processing method. Background technique
  • a pilot tone is a signal used in an optical communication system to implement functions of monitoring, control, equalization, synchronization, reference, and the like. This signal is typically a single frequency signal that is typically loaded onto a high rate traffic data optical signal.
  • a common technique for loading a pilot signal is to modulate a pilot traffic signal onto a high speed traffic data optical signal through a modulator.
  • the modulator can be an optical modulator for modulating high-speed service data.
  • the continuous light is modulated into an amplitude or phase-modulated optical signal by a Mach-Zehnder modulator (MZM).
  • MZM Mach-Zehnder modulator
  • the pilot service signal is loaded through the bias voltage pin of the MZM, and then the pilot service signal is loaded onto the service data optical signal;
  • the modulator can also be an additional external modulator, as shown in FIG.
  • the light enters an external modulator, such as a variable optical attenuator (VOA), and the pilot signal drives the external modulator, and then the pilot signal is loaded to the service data optical signal through the external modulator.
  • VOA variable optical attenuator
  • Embodiments of the present application provide a signal processing device, a communication system, and a signal processing method to implement low-cost modulation of a pilot signal.
  • a signal processing apparatus comprising: an encoder and an adapter; the encoder, for every predetermined number of bits in a bit sequence of a traffic signal of a pilot signal to be loaded, Inserting a pilot bit sequence, the pilot bit sequence is a bit sequence for generating a pilot signal; the adapter, configured to generate, by using a bit sequence after inserting a pilot bit sequence, the service signal and the The signal of the pilot signal.
  • the pilot bit sequence includes: a column; the encoder is specifically configured to insert a first pilot bit sequence and a period of (P+Q) a sequence of two pilot bits, in each period, firstly inserting P first pilot bit sequences, and then continuously inserting Q second pilot bit sequences, wherein between each two adjacent pilot bit sequences The interval is the predetermined number of bits, and P and Q are positive integers.
  • the encoder is further configured to: adjust a modulation depth parameter according to the pilot signal, and ratio and modulation of P and Q The correspondence between the depth parameters determines the ratio of P and Q.
  • the encoder is further configured to: according to a modulation depth parameter of the pilot signal, and a modulation depth parameter and a pilot The correspondence between the number of bits having a value of 'T' in the bit sequence and the ratio of the number of bits having a value of "0", determining the number of bits and the value of "0" in the first pilot bit sequence having a value of "1" The ratio of the number of bits is determined, and the ratio of the number of bits having a value of 'T' in the second pilot bit sequence to the number of bits having a value of "0" is determined.
  • the encoder is further configured to: insert a pilot Before the bit sequence, obtaining a pilot bit sequence of pilot information that needs to be carried by the pilot signal; determining an arrangement between different pilot bit sequences according to the binary bit sequence of the pilot information a binary bit "1" in the pilot information between the different pilot bit sequences in a first arrangement, and the pilot information is represented in a second arrangement between the different pilot bit sequences
  • the binary bit "0" in the middle, the different pilot bit sequence includes at least a first pilot bit sequence and a second pilot bit sequence.
  • the encoder is specifically configured to represent the binary bit "1" in the pilot information by: (P+Q And inserting the first pilot bit sequence and the second pilot bit sequence for the period, and repeating n times, n is a positive integer; the encoder is specifically configured to represent the binary bit in the pilot information by using the following method: “: inserting a third pilot bit sequence and a fourth pilot bit sequence in a period of (P+Q) for indicating a binary bit "0" of the pilot information; a median value of the third pilot bit sequence”
  • the ratio of the number of bits of 1" to the number of bits of "0” is different from the ratio of the number of bits having a value of "1" in the first pilot bit sequence and the number of bits having a value of "0”; and / Or the ratio of the number of bits in the fourth pilot bit sequence to " ⁇ , the number of bits and the value of "0", and the number of bits in the second pilot bit sequence having a value of
  • the encoder is specifically configured to represent the binary bit "1" of the pilot information by: (P+ Q) inserting the first pilot bit sequence and the second pilot bit sequence for the period, and repeating n times, n is a positive integer; the encoder is specifically configured to represent the binary bits of the pilot information by: "0": insert a third pilot bit sequence and a fourth pilot bit sequence with (P, +Q,) as a period, thereby repeating n, times, P, Q, and n as positive integers and P, +Q, ⁇ P+Q, n' ⁇ n; the number of bits in the third pilot bit sequence having a value of "0" is greater than the number of bits having a value of "1”; in the fourth pilot bit sequence The number of bits having a value of "1” is greater than the number of bits having a value of "0”; or the number of bits having a value of "1" in the third pilot bit sequence is greater than the number of
  • the location of the fixed frame byte in the bit sequence after the insertion of the pilot bit sequence is offset from the location of each pilot bit sequence.
  • a first signal processing device comprising: a service signal An acquiring unit and a pilot acquiring unit; the service signal acquiring unit, comprising: a first adapter and a decoder, the first adapter, configured to: receive the first signal from the first service signal and the first pilot signal And obtaining a bit sequence including a fifth pilot bit sequence and a bit sequence of the first service signal, where the fifth pilot bit sequence is a bit sequence corresponding to the first pilot signal; and the decoder is configured to: And removing the fifth pilot bit sequence in the bit sequence including the fifth pilot bit sequence and the bit sequence of the first service signal, to obtain a bit sequence of the first service signal; and the pilot acquiring unit, And: acquiring the first pilot signal from the first signal first signal.
  • a communication system comprising: a signal processing device according to any one of the embodiments of the present invention and a first signal processing device introduced in any one of the embodiments of the present invention.
  • a signal processing method including: inserting, in a bit sequence of a service signal of a pilot signal to be loaded, a pilot bit sequence, the pilot bit sequence, every predetermined number of bits And a bit sequence for generating a pilot signal; and generating a signal including the service signal and the pilot signal by using a bit sequence inserted with a pilot bit sequence.
  • the pilot bit sequence includes: a column; and the pilot bit sequence is inserted every predetermined number of bits, specifically: (P+Q) Inserting a first pilot bit sequence and a second pilot bit sequence periodically, in each period, inserting P first pilot bit sequences consecutively, and then sequentially inserting Q second pilot bit sequences, wherein each two The interval between adjacent pilot bit sequences is the predetermined number of bits, and P and Q are positive integers.
  • the method before the inserting the pilot bit sequence in the predetermined number of bits, the method further includes: The modulation depth parameter of the pilot signal, and the correspondence between the ratio of P and Q and the modulation depth parameter, determine the ratio of P and Q.
  • the method before the inserting the pilot bit sequence, further includes: Determining the first derivative of the modulation depth parameter of the pilot signal and the ratio of the modulation depth parameter to the ratio of the number of bits in the pilot bit sequence of 'T' and the number of bits having a value of “0” The ratio of the number of bits having a value of "1" in the frequency bit sequence to the number of bits having a value of "0”, and determining the number of bits having a value of "1" in the second pilot bit sequence and a value of "0” The ratio of the number of bits.
  • the method before the inserting the pilot bit sequence, further includes: acquiring a pilot bit sequence of pilot information that needs to be carried by the pilot signal; determining, according to the binary bit sequence of the pilot information, an arrangement manner between different pilot bit sequences, wherein the different guides
  • the binary bit "1" in the pilot information is represented by a first arrangement between the frequency bit sequences, and the binary bit "0" in the pilot information is represented by the second arrangement between the different pilot bit sequences.
  • the different pilot bit sequences include at least a first pilot bit sequence and a second pilot bit sequence.
  • the method further includes: expressing a binary bit “1” in the pilot information by: (P+Q) Inserting the first pilot bit sequence and the second pilot bit sequence for the period, and repeating n times, n is a positive integer; the binary bit "0" in the pilot information is represented by: (P+Q) Inserting a third pilot bit sequence and a fourth pilot bit sequence for indicating a binary bit "0" of pilot information; a value and a value of "1" in the third pilot bit sequence
  • the ratio of the number of bits of 0" is different from the ratio of the number of bits having a value of 'T' in the first pilot bit sequence and the number of bits having a value of "0"; and/or the fourth pilot bit sequence
  • the ratio of the number of bits whose median value is " ⁇ , and the number of bits of "0,” is different from the ratio of the number of bits in the second pilot bit sequence to 'T' and the number of bits having a value
  • the method further includes: expressing the binary bit “1” of the pilot information by: (P+Q) Inserting the first pilot bit sequence and the second pilot bit sequence for the period, and repeating n times, n is a positive integer; the binary bit "0" of the pilot information is represented by: (P, + Q,) inserting a third pilot bit sequence and a fourth pilot bit sequence for the period, thereby repeating n, times, P, Q, and n as positive integers and P, +Q, ⁇ P+Q, n ' ⁇ n; the number of bits in the third pilot bit sequence is "0", the number of bits is more than the value of "1”; the number of bits in the fourth pilot bit sequence is "1" More than a number of bits of "0”; or a number of bits in the third pilot bit sequence having a value of "1" more than a value of "0”; a value of "0” in the fourth pilot bit sequence The number of
  • the location of the fixed frame byte in the bit sequence after the insertion of the pilot bit sequence is offset from the location of each pilot bit sequence.
  • a signal processing method includes: acquiring, from a first signal first signal including a first service signal and a first pilot signal, a fifth pilot bit sequence and a first a bit sequence of a bit sequence of the service signal, the fifth pilot bit sequence being a bit sequence corresponding to the first pilot signal; removing the bit of the bit sequence including the fifth pilot bit sequence and the first service signal a fifth pilot bit sequence in the sequence to obtain a bit sequence of the first service signal; and obtaining the first pilot signal from the first signal first signal.
  • a signal processing device including: an encoder and an adapter; an encoder, an encoder, used in a bit sequence of a service signal of a pilot signal to be loaded, every predetermined number of a bit, a pilot bit sequence is inserted, the pilot bit sequence is a bit sequence for generating a pilot signal, and an adapter is configured to generate a signal including the traffic signal and the pilot signal by using the bit sequence after the pilot bit sequence is inserted. That is, the pilot signal is loaded by encoding the service signal, so that the pilot signal is not loaded by an additional modulator or by adjusting the pins of the modulator of the modulated service signal, thereby achieving a reduction in the service signal.
  • the technical effect of loading the cost of the pilot signal is provided, including: an encoder and an adapter; an encoder, an encoder, used in a bit sequence of a service signal of a pilot signal to be loaded, every predetermined number of a bit, a pilot bit sequence is inserted, the pilot bit sequence is a bit sequence for generating
  • FIG. 1 is a schematic diagram of modulating a pilot electrical signal by a modulator of an optical signal in the prior art
  • FIG. 1b is a schematic diagram of modulating a pilot electrical signal by an additional external modulator in the prior art
  • FIG. 2 is in the embodiment of the present application. a structural diagram of a signal processing device of the first aspect
  • FIG. 3 is a schematic diagram of a physical layer in a network seven-layer protocol architecture in the embodiment of the present application.
  • 4 a is a schematic diagram of a bit stream of an amplitude modulated service signal according to an embodiment of the present application
  • 4b is a schematic diagram of a spectrum response of a signal in an embodiment of the present application
  • 4c is a schematic diagram of inserting a pilot signal into a service signal according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a frequency spectrum in which a pilot signal is loaded by a service signal according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of a predetermined number of bits inserted into a pilot bit sequence at predetermined intervals in the embodiment of the present application;
  • FIG. 6 is a structural diagram of a first signal processing device according to a second aspect of the embodiment of the present application.
  • FIG. 7 is a structural diagram of a network system according to a third aspect of the embodiment of the present application.
  • FIG. 8 is a flowchart of a signal processing method according to a fourth aspect of the embodiments of the present application.
  • FIG. 9 is a flowchart of a method for processing a signal according to a fifth aspect of the embodiment of the present application.
  • FIG. 10 is a schematic diagram of functional modules included in an encoder 20 of a signal processing device according to Embodiment 1 of the present application;
  • 11a is a schematic diagram of functional modules included in an encoder 20 of a signal processing device according to Embodiment 2 of the present application;
  • Figure lib is a schematic diagram of a pilot bit sequence in which k bits are inserted every M bits when the pilot information is loaded in the second embodiment of the present application;
  • FIG. 12a is a flowchart of a signal processing method at a transmitting end according to Embodiment 3 of the present application;
  • FIG. 12b is a flow chart of demodulating an optical signal loaded with a pilot signal by a receiving end according to Embodiment 3 of the present application;
  • 12c is a flowchart of the receiver receiving the pilot signal from the optical signal loaded with the pilot signal in the third embodiment of the present application. detailed description
  • a signal processing device including: an encoder, used in a bit sequence of a service signal to be loaded with a pilot signal Inserting a pilot bit sequence for a predetermined number of bits, the pilot bit sequence is a bit sequence for generating a pilot signal; and an adapter for generating a service signal using the bit sequence after the pilot bit sequence is inserted The signal of the pilot signal. That is through the business The signal is encoded to load the pilot signal, so that the pilot signal is not loaded by an additional modulator or by adjusting the pins of the modulator that modulates the traffic signal, thereby reducing the cost of loading the pilot signal in the traffic signal.
  • the embodiment of the present application provides a signal processing device.
  • the embodiment specifically includes: an encoder 20 and an adapter 21;
  • the embodiment of the present application is mainly implemented in a physical layer in a network seven-layer protocol architecture as shown in FIG. 3.
  • the physical layer may include a Reconciliation Sublayer (RS) sublayer, a Physical Coding Sublayer (PCS) sublayer, a Physical Medium Attachment (PMA) sublayer, and a physical medium correlation ( Physical Media Dependent, PMD) Sublayer, etc., where the encoder 10 corresponds to the PCS sublayer, and the adapter 21 corresponds to the PMA sublayer.
  • the encoder 20 is configured to insert a pilot bit sequence every predetermined number of bits in a bit sequence of a service signal of a pilot signal to be loaded, and the pilot bit sequence is a bit sequence for generating a pilot signal; Bit sequence pilot bit sequence pilot bit sequence;
  • the adapter 21 is configured to generate a signal pilot bit sequence including the service signal and the pilot signal by using the bit sequence after the pilot bit sequence is inserted.
  • the encoder 20 is, for example, a dedicated chip such as an Application Specific Integrated Circuit (ASIC); or a Field-Programmable Gate Array (FPGA); or a general-purpose processor (The program or the software of the CPU or the like is not limited in the embodiment of the present invention.
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • the program or the software of the CPU or the like is not limited in the embodiment of the present invention.
  • the pilot bit sequence inserted by the encoder 20 in the bit sequence of the traffic signal to be loaded with the pilot signal refers to a specific sequence of bits, which may be only one pilot bit sequence, or may include A plurality of pilot bit sequences, for example: comprising a first pilot bit sequence and a second pilot bit sequence.
  • the first pilot bit sequence and the second pilot bit sequence are mainly introduced by using the pilot bit sequence as an example.
  • the first pilot bit sequence is represented by OH0, and OH1 indicates that Two pilot bit sequences. For example, if k is 8, OHO is, for example: 00000011, OH1 is, for example: 11111100; as shown in FIG.
  • OH0 is, for example, 1110000000000001
  • OH1 is, for example, 0001111111111110, etc., if k is 1, OH0 is "0"
  • the OH1 is "1", where k can be any value, and OH0 and OH1 can also be any pilot bit sequence, which is not listed in detail in the embodiments of the present application, and is not limited.
  • the adapter 21 is, for example: an electric modulator, a light modulator, an electrical output interface, etc.; taking the adapter 21 as an optical modulator as an example, the adapter 21 is configured to modulate the light wave with a bit sequence loaded with a pilot bit sequence.
  • the bit sequence loaded with the pilot bit sequence is modulated into an optical signal loaded with the pilot signal; taking the adapter 21 as an electrical modulator, the adapter 21 is used to modulate the bit sequence modulated with the pilot bit sequence.
  • An electrical signal thereby modulating a sequence of bits loaded with a pilot bit sequence into an electrical signal comprising a traffic signal and a pilot signal.
  • the bit stream of the amplitude modulated traffic signal if it is a binary amplitude modulation, represents the data "1" with a higher amplitude and the data "0" with a lower amplitude or a zero amplitude;
  • a schematic diagram of the frequency response of the service signal the spectrum response diagram only includes the amplitude frequency response, and does not include the phase frequency response;
  • FIG. 4c a schematic diagram of inserting the pilot signal in the service signal, in the service signal
  • a pilot bit sequence of k bits is inserted every M bits, and the duration of the M bits is T, and after the pilot bit sequence is inserted in the service signal, a spectrum line having a higher amplitude appears in the spectrum of the service signal. As shown in Figure 4d, this means that the pilot signal has been loaded on the traffic signal.
  • the pilot bit sequence includes: at least two different pilot bit sequences including OH0 and OH1;
  • the encoder 20 is specifically configured to insert OH0 and OH1 with (P+Q) as a period, and insert P OH0s consecutively in each period, and then sequentially insert Q OH1s, where each two adjacent pilot bits
  • the interval between sequences is a predetermined number of bits, and P and Q are positive integers.
  • every predetermined number of bits for example, the period T1 in FIG. 5
  • a k-bit pilot bit sequence OH0 or OH1 is inserted, and after P OH1s are inserted, interpolation is performed.
  • Q OH0; then insert P OH1, then insert Q OH0...; so repeat, and then get To obtain the repetition period Tl is:
  • the encoder 20 is further configured to:
  • the ratio of P to Q is determined according to the modulation depth parameter of the pilot signal and the correspondence between the ratio of P and Q and the modulation depth parameter.
  • OH0 and OH1 can be taken as fixed values, and then different sets of P and Q ratios are respectively taken, and corresponding modulation depth parameters are respectively measured at the receiving end of the service signal, wherein the modulation depth parameter is equal to the pilot signal amplitude and The ratio of the amplitudes of the traffic signals, thereby obtaining the correspondence between the ratios of the plurality of sets of P and Q and the modulation depth parameters.
  • the lower the modulation depth the more unfavorable the detection of the pilot signal, but the more favorable the transmission of the service signal. Therefore, in practical applications, an appropriate modulation depth parameter can be set according to requirements, and the ratio of P and Q can be controlled by the modulation depth parameter.
  • the number of bits with a value of "0" in OH0 is greater than the number of bits with a value of "1"
  • the number of bits with a value of 'T' in OH1 is greater than the number of bits with a value of "0";
  • the number of bits with a value of "1" in OH0 is greater than the number of bits with a value of "0", and the number of bits with a value of "0" in OH1 is greater than the number of bits having a value of "1".
  • the names of the two pilot bit sequences, OH0 and OH1, are relative.
  • OH0 is, for example: 00011111
  • OH1 is, for example: 11100000
  • OH0 is, for example: 11100111
  • OH1 is, for example: 00011000
  • OH0 is, for example: 01010000
  • OH1 is, for example: 10101111; or
  • OH0 is, for example, 01010100, and OH0 is, for example, 10101011 and the like.
  • a signal composed of OH0 and OH1 with a period of (P + Q > T) generates a spectrum having a certain amplitude at a frequency of 1/((P + Q > T) in the frequency domain.
  • the encoder 20 is also used to:
  • the correspondence between the modulation depth parameter and the number of bits in the pilot bit sequence of "1" and the ratio of the number of bits of "0,” may be obtained in advance, and the pre-acquisition process may be further divided into multiple types. In the case, two of them are listed below. Of course, in the specific implementation process, the following two cases are not limited.
  • a possible implementation is to keep the ratio of P and Q unchanged during the initialization phase, and change the ratio of the number of bits in the OH0 and OH1 to " ⁇ , the number of bits and the number of bits with a value of "0", thereby receiving
  • the terminal obtains a plurality of sets of modulation depth parameters, and further determines a correspondence between the ratio of the number of bits having a value of "1" in OH0 and OH1 and the number of bits having a value of "0" to the modulation depth parameter.
  • the ratio of the number of bits in the OH0 corresponding to the modulation depth parameter and the number of bits having the value of “0” is directly read from the corresponding relationship.
  • the ratio of P and Q, the number of bits with a value of "1" in OH0, and the number of bits with a value of "0", and the value in OH1 are "1".
  • the ratio of the number of bits to the number of bits with a value of "0” is used as a variable to obtain multiple sets of modulation depth parameters, and finally the ratio of P and Q, the number of bits with a value of "1" in OH0, and the value of "0” are determined.
  • the ratio of the number of bits, the number of bits in the OH1 value to "1", and the number of bits with the value "0” are proportional to the modulation depth parameter.
  • the ratio of the corresponding P and Q, the number of bits in the OH0 value of "1", and the number of bits with the value of "0" can be determined in the correspondence relationship.
  • the value of OH1 is " ⁇ , the number of bits and the ratio of the number of bits with a value of "0". Since there are three sets of variables, it is possible that one modulation depth parameter corresponds to the ratio of multiple sets of P and Q, and the median value of OH0.
  • the ratio of the number of bits of "1" to the number of bits having a value of "0", the ratio of the number of bits having a value of "1” in OH1, and the number of bits having a value of "0" can be selected from a random group.
  • OH0 is specifically: a pilot bit sequence with a number of bits of “0” of 1; a second pilot bit sequence, specifically: a pilot bit sequence with a value of 1 for a value of 'T'; or
  • the OHO is specifically: a pilot bit sequence having a value of "1" and a number of bits; a second pilot bit sequence, specifically: a pilot bit sequence having a value of "0” and a number of bits of 1. That is, the number of bits having a value of "1" in OH0 is one, and the number of bits having a value of "0" in OH1 is one.
  • OH0 is, for example: 00000000
  • OH0 is, for example: 11111111; or OH0 is: 11111111, OH1 is 00000000, etc.
  • the value in OH0 is "0"
  • the number of bits is the highest and the number of bits with the value "1" in OH1 is the highest, or the number of bits with the value of "1" in OH0 is the highest and the value of "0" in OH1 is the highest, so that the deepest modulation depth can be obtained.
  • OH0 is, for example: 00000010
  • OH0 is for example: 11111101, which can be in continuous "0"
  • the deepest modulation depth can be obtained without the "1" being more than a few.
  • the encoder 20 is further configured to:
  • the pilot signal is usually used for network monitoring/management functions such as power monitoring and wavelength path tracking, and does not carry information itself.
  • pilot information is added to the pilot signal. The transmission is carried out, so that no additional data transmission channel needs to be added, thereby saving the overhead of data transmission.
  • the pilot information can be used for control, management, configuration and the like.
  • the pilot information is, for example: status information of a signal or device or link in an optical network, management or control information of an optical network or device, etc.; pilot information information can be through a user interface (such as a network management system)
  • the input which can be automatically obtained by the network device, and the like, is not limited in the embodiment of the present invention.
  • the encoder 20 is specifically configured to represent a binary ratio in the pilot information by: Special T:
  • Encoder 20 is specifically used to represent the binary bit "0" in the pilot information by: (P+ Q) inserting a third pilot bit sequence and a fourth pilot bit sequence for the period, used to represent the binary bit "0" of the pilot information;
  • the ratio of the number of bits having a value of "1" in the fourth pilot bit sequence to the number of bits having a value of "0" and the number of bits having a value of "1" in the second pilot bit sequence and bits having a value of "0" The ratio of the numbers is different.
  • OH0 will be used to represent the third pilot bit sequence
  • represents the fourth pilot bit sequence
  • the binary bit sequence corresponding to the pilot information is 0110
  • the arrangement of OH0 and OH1 corresponding to the pilot information 0110 is: (P ⁇ '+Q ⁇ ) xn, (P OH0 +Q OHl ) xn, (P OH0+Q OHl ) xn, (P OHO'+Q ⁇ ) ⁇
  • the service signal can be inserted according to the arrangement Different pilot bit sequences are inserted in the process.
  • the values used for n, P, and Q are not limited in this application.
  • pilot information is actually a binary amplitude modulation, that is, binary amplitude shift keying (2ASK) modulation, or open key control (OOK) modulation, which is relatively common, simple and easy to implement.
  • binary amplitude modulation that is, binary amplitude shift keying (2ASK) modulation, or open key control (OOK) modulation, which is relatively common, simple and easy to implement.
  • the difference between OH0 and OH0, or at least one of OH1 and ⁇ , is to ensure that different pilot amplitudes can be generated, and different pilot information bits can be identified at the receiving end according to different pilot amplitudes.
  • the number of bits with a value of "1" in OH0' is the same as the number of bits with a value of "0" or the number of bits with a value of "1” in OH0' and the number of bits having a value of "0" is 1; and / or
  • the number of bits with a median value of "1" is the same as the number of bits with a value of "0" or the median value of ⁇
  • the number of bits of "1" differs from the number of bits of value "0" by one.
  • the lowest modulation depth can be obtained, as is OH1, that is, in this case, no pilot or pilot amplitude is generated, and since OH0 and OH1 On the contrary, where 'T' has more bits than "0,” or "0" has more bits than "1", in which case the resulting pilot amplitude is higher. Can enable the receiver to distinguish more accurately
  • the pilot information represented by OH0, 0H1, OHO', and ⁇ achieves the technical effect of improving the recognition accuracy.
  • the encoder 20 is specifically configured to insert ⁇ 0 and OH1 in a period of (P+Q) by using a binary bit of the pilot information in the following manner, and repeat n times, ⁇ is a positive integer; the encoder 20, specifically The binary bit "0" used to represent the pilot information in the following manner:
  • the number of bits with a value of "0" in OH0' is greater than the number of bits with a value of "1"; the number of bits with a value of "1" in ⁇ is greater than the number of bits with a value of "0"; or
  • the number of bits with a value of "1" in OH0' is greater than the number of bits with a value of "0"; the number of bits with a value of "0” is greater than the number of bits with a value of "1".
  • ⁇ 0 for example, 00001010, om, for example, llllOlOl, or OH0, for example, 11011011, om, for example, 00110000, etc., is not limited in the embodiment of the present application.
  • the pilot bit sequence corresponding to the pilot information is arranged as follows: (P'OH0'+Q' OH1 ')* ⁇ ', ( ⁇ OH0+Q OH1) *n, (P OH0+QOm) *n, (P OH0'+Q ⁇ ) *n, in the case After the order of the pilot bit sequences is determined, the corresponding pilot bit sequences can be sequentially inserted in the service signal in the order of arrangement.
  • OH0' is the same as OH0
  • is the same as OH1.
  • the framing byte of the bit sequence refers to some bytes of the header of the bit sequence frame, which is used to indicate that this is the beginning of a frame, because the location of the framing byte and the location of each pilot bit sequence The position is staggered, so that the pilot bit sequence is prevented from being blocked by the pilot bit sequence, so that the pilot bit sequence can be removed more conveniently.
  • the encoder 20 is also used to:
  • the bit rate of the service signal including the pilot bit sequence is adjusted to R ⁇ M+k)/M or remains unchanged;
  • R is the bit rate of the traffic signal before the pilot bit sequence is inserted
  • M is the predetermined interval
  • k is the number of bits of the pilot bit sequence.
  • the bit rate is adjusted to R ⁇ M + k) / M, then after inserting the pilot bit sequence in the traffic signal, the net bit rate of the traffic signal is still R, in this case, per unit time transmission
  • R the bit rate of the traffic signal
  • bit rate of the service signal is not constant, since there is no need to re-adjust the bit rate, there is a technical effect of reducing the processing load of the signal processing device.
  • the encoder 20 inserts a pilot bit sequence, specifically: after the service signal is framed, the pilot bit sequence is inserted every predetermined number of bits in the bit sequence.
  • the pilot signal can be directly inserted into the signal, and no other processing is needed, and the pilot signal can be directly extracted at the receiving end, thereby achieving insertion and extraction.
  • the embodiment of the present invention provides a first signal processing device. Referring to FIG. 6, the method includes: a service signal acquiring unit 60 and a pilot acquiring unit 61;
  • the service signal obtaining unit 60 includes: a first adapter 60a and a decoder 60b, the first adapter 60a, configured to: a first adapter and a decoder, the first adapter, configured to: receive the first service signal and the first guide And acquiring, in the first signal of the frequency signal, a bit sequence including a fifth pilot bit sequence and a bit sequence of the first service signal, the fifth pilot bit sequence being a bit sequence corresponding to the first pilot signal; and the decoder 60b, And removing a fifth pilot bit sequence in the bit sequence of the bit sequence including the fifth pilot bit sequence and the first service signal, to obtain a bit sequence of the first service signal; and a pilot acquiring unit 61, configured to The first pilot signal is obtained from the signal.
  • the first pilot signal obtained by the pilot acquisition unit 61 from the first signal is specifically: one or more information of the frequency, the amplitude, the modulation depth, and the pilot information of the pilot signal obtained from the interface signal.
  • an embodiment of the present invention provides a communication system. Referring to FIG. 7, specifically:
  • the signal processing device 70 introduced in the first aspect of the embodiment of the present invention.
  • the first signal processing device 71 introduced in the second aspect of the embodiment of the present invention.
  • the signal processing device 70 and the first signal processing device 71 may be located in the same device or in a separate device, which is not limited in the embodiment of the present invention.
  • an embodiment of the present invention provides a signal processing method. Referring to FIG. 8, the method includes:
  • Step S801 Inserting, in a bit sequence of the service signal of the pilot signal to be loaded, a pilot bit sequence every predetermined number of bits, the pilot bit sequence being a bit sequence for generating a pilot signal;
  • Step S802 using the insertion
  • the bit sequence following the pilot bit sequence generates a signal containing the traffic signal and the pilot signal.
  • the pilot bit sequence includes: at least two different pilot bit sequences including OH0 and OH1;
  • the pilot bit sequence is inserted every predetermined number of bits, specifically: OH0 and OH1 are inserted in a period of (P+Q), and P OH0s are successively inserted in each cycle, and then Q OH1s are successively inserted, wherein , the interval between every two adjacent pilot bit sequences is a predetermined number of bits, and P and Q are positive Number.
  • the method before inserting OH0 and OH1 in a period of (P+Q), the method further includes: determining P and Q according to a modulation depth parameter of the pilot signal, and a correspondence between a ratio of P and Q and a modulation depth parameter. proportion.
  • the number of bits in the OH0 with a value of "0" is greater than the number of bits having a value of "1", and the number of bits having a value of 'T' in the OH1 is greater than the number of bits having a value of "0";
  • the number of bits with a value of "1" in OH0 is greater than the number of bits with a value of "0", and the number of bits with a value of "0" in OH1 is greater than the number of bits with a value of "1".
  • the method before inserting the pilot bit sequence every predetermined number of bits, the method further includes: from the modulation depth parameter according to the modulation depth parameter of the pilot signal, and the median value of the modulation depth parameter and the pilot bit sequence is “1” In the correspondence between the number of bits and the ratio of the number of bits having a value of "0", the number of bits in the OH0 value "1" is determined and the value is the value of "0, the number of bits, and the value in the OH1 is determined” The ratio of the number of bits of 1 "and the number of bits of value "0".
  • OH0 is specifically: a pilot bit sequence with a bit number of 1 of "0"; OH1, a pilot bit sequence of: 1 with a number of bits of "1"; or
  • OH0 specifically: a pilot bit sequence with a bit number of "1" of 1
  • OH1 specifically: a pilot bit sequence with a bit number of "0”.
  • the method further includes:
  • the method further includes:
  • the binary bit "1" in the pilot information is represented by:
  • OH0 and OH1 are inserted with (P+Q) as a period, and this is repeated n times, n is a positive integer;
  • the binary bit "0" in the pilot information is represented by: Inserting OHO with (P+Q) as the period, and ⁇ ', indicating the binary bit "0" of the pilot information;
  • the ratio of the number of bits having a value of "1" in OH0' to the number of bits having a value of "0" is different from the ratio of the number of bits having a value of "1" in the first pilot bit sequence and the number of bits having a value of "0". ; and / or
  • the ratio of the number of bits having a median value of "1" to the number of bits having a value of "0" is different from the ratio of the number of bits having a value of "1" in the second pilot bit sequence and the number of bits having a value of "0".
  • the number of bits with a value of "1" in OH0' is the same as the number of bits with a value of "0" or the number of bits with a value of "1” in OH0' and the number of bits having a value of "0" is 1; and / or
  • the number of bits with a median value of "1" is the same as the number of bits with a value of "0" or the number of bits with a value of "1” and the number of bits with a value of "0" is 1.
  • the method further includes:
  • the binary bit "1" of the pilot information is represented by:
  • the number of bits with a value of "0" in OH0' is greater than the number of bits with a value of "1"; the number of bits with a value of "1" in ⁇ is greater than the number of bits with a value of "0"; or
  • the number of bits with a value of "1" in OH0' is greater than the number of bits with a value of "0"; the number of bits with a value of "0” is greater than the number of bits with a value of "1".
  • OH0' is the same as ⁇ 0, and ⁇ is the same as OH1.
  • the positions of the respective pilot bit sequences are staggered.
  • an embodiment of the present invention provides a signal processing method. Referring to FIG. 9, the method includes:
  • Step S901 Obtain a bit sequence including a fifth pilot bit sequence and a bit sequence of the first service signal from the first signal including the first service signal and the first pilot signal, where the fifth pilot bit sequence is corresponding a bit sequence of the first pilot signal;
  • Step S902 The fifth pilot bit sequence in the bit sequence including the fifth pilot bit sequence and the bit sequence of the first service signal is removed, to obtain a bit sequence of the first service signal.
  • Step S903 Acquire a first pilot signal from the first signal.
  • the signal processing device and the signal processing method in the embodiment of the present application are introduced by taking the pilot signal as not including the pilot information.
  • the pilot bit stream generating unit 102 is configured to receive P and Q transmitted by the pilot parameter P, the Q calculation unit, and acquire OH0 and OH1 from the pilot pattern storage unit 140, and then generate a guide through P and Q, and OH0 and OH1.
  • the bit stream data, the generated bit stream data is specifically: 00000001000000011111111011111110 (ie: OH0OH0OH1OH1);
  • the bit splicing unit 103 is configured to receive pilot bit stream data transmitted by the pilot bit stream generating unit 142, and a service signal corresponding to the high speed service bit stream, and then insert k bits of pilots every M bits in the service signal. A sequence of bits, thereby outputting a high speed traffic bitstream with pilot signals.
  • the signal processing device and the signal processing method in the embodiment of the present application are introduced by taking the pilot information in the pilot signal and implementing it in the 2FSK mode as an example.
  • the pilot bit stream generating unit 113 is configured to generate, according to ⁇ , Q, n, OH0, and OH1, a pilot bit stream for indicating “0,” in the pilot information, according to P, Q, n, OH0 'and ⁇ generate a pilot bit stream for indicating " ⁇ " in the pilot information;
  • the bit splicing module 114 is configured to acquire a pilot bit stream that is generated by the pilot bit stream generating unit 113 and that represents “0,, and ” in the pilot information, and obtain a service signal corresponding to the high-speed service bit stream, and needs to be loaded. a binary bit sequence of pilot information; then a pilot bit stream of "0" and “1” and a binary bit sequence of pilot information are inserted, and k bits of pilots are inserted every other bit in the traffic signal.
  • a bit sequence which in turn obtains a high-speed service bit stream with pilot information, as shown in the lib, if a pilot bit stream representing the pilot information "1" is inserted in the U time, due to its (P+Q) ) OH0 and OH1 are composed, so the pilot frequency is 1/((P+QT), and if the pilot bit stream of "0" is inserted in U time, it is due to (P'+Q' ) OH0' and ⁇ are composed, so the pilot frequency is 1/((P'+Q')-T), so after the pilot signal is detected at the pilot signal receiving end, it can pass the corresponding guide in U time.
  • the frequency frequency is determined to be "0" or "1" for the indicated pilot information.
  • the time is long.
  • U is pilot information bit period.
  • the embodiment of the present application is for loading a pilot signal to a service signal of an Optical Transport Network (OTN).
  • OTN Optical Transport Network
  • the signal processing method on the transmitting end side specifically includes the following steps:
  • Step S1201 Add FEC (Forward Error Correction) to the traffic signal payload bit.
  • Step S1202 Perform scrambling processing on the service signal added with the FEC.
  • Step S1203 Add a frame header or the like to the service signal processed by the scrambling code, thereby framing the service signal.
  • Step S1204 Add a pilot bit sequence to the framing service signal.
  • the service signal format is an OTU (Optical Channel Transport Unit), for example, to OOK (Binary Keying: On-Off Keying)
  • OH1 may be OxFEFEFEFEFEFEFE
  • OH0 may be 0x01010101010101.
  • the fixed frame byte of the service signal is to be avoided when the pilot is loaded, because the OTU frame header contains 7-byte fixed frame bytes, and the OTU frame length is 16320 bytes, so the preferred M>7 can be 16320. Divisible.
  • Step S1205 Modulating the DC optical signal by the service signal loaded with the pilot signal, thereby obtaining an optical signal loaded with the pilot signal.
  • FIG. 16b may specifically include the following process of obtaining the payload bit of the service signal:
  • Step S1206 The first signal processing device at the receiving end performs photoelectric conversion after receiving the optical signal including the pilot signal, thereby obtaining a service signal including the pilot signal;
  • Step S1207 Perform frame processing on the service signal including the pilot signal.
  • Step S1208 Removing the pilot signal from the service signal including the pilot signal, and the receiving end may remove the pilot signal by using the insertion position of the pilot signal;
  • Step S1209 De-frame the service signal from which the pilot signal is removed, and remove the frame header.
  • Step S1210 Perform descrambling processing on the service signal that removes the frame header.
  • Step S1211 The FEC is released for the descrambling processed service signal.
  • FIG. 12c may further include the following process of acquiring a pilot signal:
  • Step S1212 Perform photoelectric conversion on the optical signal that receives the pilot signal, thereby obtaining a service signal including the pilot signal;
  • Step S1213 performing electrical amplification and analog-to-digital conversion on the service signal including the pilot signal;
  • Step S1214 performing digital signal processing on the signal after performing electrical amplification and analog-to-digital conversion;
  • Step S1215 obtaining from the signal processed by the digital signal One or more of the frequency, amplitude, modulation depth, and pilot information of the pilot signal.
  • a signal processing device including: an encoder and an adapter; an encoder, an encoder, In a bit sequence of a service signal to be loaded with a pilot signal, a pilot bit sequence is inserted every predetermined number of bits, the pilot bit sequence is a bit sequence for generating a pilot signal; and an adapter is used to utilize the inserted pilot The bit sequence following the frequency bit sequence generates a signal containing the traffic signal and the pilot signal.
  • the pilot signal is loaded by encoding the service signal, so that the pilot signal is not loaded by an additional modulator or by adjusting the pins of the modulator of the modulated service signal, thereby achieving a reduction in the service signal.
  • the technical effect of loading the cost of the pilot signal is not loaded by an additional modulator or by adjusting the pins of the modulator of the modulated service signal, thereby achieving a reduction in the service signal.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the application can be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • the application can be in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • These computer program instructions can also be stored in a bootable computer or other programmable data processing device.
  • a computer readable memory that operates in a particular manner, causing instructions stored in the computer readable memory to produce an article of manufacture comprising instruction means implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

 本申请涉及通信技术领域,公开了信号处理设备、通信系统及信号处理方法,该信号处理设备包括:编码器和适配器;编码器,用于在待加载导频信号的业务信号的比特序列中,每隔预定数量的比特,插入导频比特序列,导频比特序列为用于产生导频信号的比特序列;适配器,用于利用插入了导频比特序列后的比特序列生成包含了业务信号和导频信号的信号。

Description

信号处理设备、 通信系统及信号处理方法
技术领域
本申请涉及通信技术领域, 特别涉及信号处理设备、 通信系统及信号处 理方法。 背景技术
在光通信系统中, 导频(pilot tone )是在光通信系统中用于实现监控、 控 制、 均衡、 同步、 参考等功能的一种信号。 这种信号通常是一个单频率的信 号, 它通常加载在一个高速率的业务数据光信号上面。
现有技术中, 常见的加载导频信号的技术是通过调制器将导频业务信号 调制到高速的业务数据光信号上。 其中, 该调制器可以为调制高速业务数据 的光调制器, 如图 la 所示, 连续光通过马赫 -曾德调制器 ( Mach-Zehnder modulator, MZM )被调制成为幅度或相位调制的光信号, 同时, 通过 MZM 的偏置电压管脚加载导频业务信号, 进而将导频业务信号加载到业务数据光 信号上; 该调制器也可以为一个额外的外调制器, 如图 lb所示, 连续光通过 MZM调制之后,进入外调制器,例如可调光衰减器 (variable optical attenuator , VOA), 而导频信号驱动外调制器, 进而将导频信号通过外调制器加载到业务 数据光信号。
现有技术中至少存在以下技术问题:
现有技术中不管是用何种调制器将导频业务信号调制到业务数据光信 号, 都将导致将导频业务信号调制到业务数据光信号时成本较高。 如果是通 过调制高速业务数据的调制器的话, 因为需要通过调制器的管脚加载导频业 务信号, 故而需要重新设计调制器的器件或模块, 进而导致额外的材料和工 程成本的增加, 并且增加了调制器的复杂性; 而如果通过额外的调制器, 则 意味着发送器需要新增一个调制器, 故而也将导致成本较高。 发明内容
本申请实施例提供信号处理设备、 通信系统及信号处理方法, 以实现导 频信号的低成本调制。
根据本申请的第一方面, 提供一种信号处理设备, 包括: 编码器和适配 器; 所述编码器, 用于在待加载导频信号的业务信号的比特序列中, 每隔预 定数量的比特, 插入导频比特序列, 所述导频比特序列为用于产生导频信号 的比特序列; 所述适配器, 用于利用插入了导频比特序列后的比特序列生成 包含了所述业务信号和所述导频信号的信号。
结合第一方面, 在第一种可能的实现方式中, 所述导频比特序列包括: 列; 所述编码器具体用于, 以 (P+Q )为周期插入第一导频比特序列和第二导 频比特序列, 在每个周期内, 先连续插入 P个第一导频比特序列, 再连续插 入 Q个第二导频比特序列, 其中, 每两个相邻导频比特序列之间的间隔为所 述预定数量的比特, P、 Q为正整数。
结合第一方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述编码器还用于: 根据所述导频信号的调制深度参数, 以及 P和 Q的比例 与调制深度参数的对应关系, 确定 P和 Q的比例。
结合第一方面的第一种可能的实现方式, 在第三种可能的实现方式中, 所述编码器, 还用于: 根据所述导频信号的调制深度参数, 以及调制深度参 数与导频比特序列中值为' T' 的比特数量和值为" 0"的比特数量的比例的对应 关系,确定所述第一导频比特序列中值为 "1" 的比特数量和值为" 0"的比特数 量的比例, 并确定所述第二导频比特序列中值为' T' 的比特数量和值为" 0"的 比特数量的比例。
结合第一方面或第一方面的第一至三种可能的实现方式中的任意一种可 能的实现方式, 在第四种可能的实现方式中, 所述编码器还用于: 在插入导 频比特序列之前, 获取需要由导频信号承载的导频信息二进制比特序列; 根 据所述导频信息的二进制比特序列, 确定不同的导频比特序列之间的排列方 式, 其中, 所述不同的导频比特序列之间以第一排列方式表示导频信息中的 二进制比特 "1", 所述不同的导频比特序列之间以第二排列方式表示导频信息 中的二进制比特" 0", 所述不同的导频比特序列至少包括第一导频比特序列、 第二导频比特序列。
结合第一方面的第四种可能的实现方式, 在第五种可能的实现方式中所 述编码器,具体用于通过以下方式表示导频信息中的二进制比特 "1":以( P+Q ) 为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整 数; 所述编码器, 具体用于通过以下方式表示导频信息中的二进制比特" 0": 以(P+Q )为周期插入第三导频比特序列和第四导频比特序列, 用于表示导频 信息的二进制比特" 0"; 所述第三导频比特序列中值为 "1"的比特数量和值为 "0"的比特数量的比例,与所述第一导频比特序列中值为 "1 "的比特数量和值为 "0"的比特数量的比例不同; 和 /或所述第四导频比特序列中值为 "Γ,的比特数 量和值为 "0"的比特数量的比例,与第二导频比特序列中值为 "1"的比特数量和 值为" 0"的比特数量的比例不同。
结合第一方面的第四种可能的实现方式, 在第六种可能的实现方式中所 述编码器, 具体用于通过以下方式表示所述导频信息的二进制比特 "1": 以 ( P+Q )为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整数; 所述编码器, 具体用于通过以下方式表示所述导频信息的二进制 比特" 0": 以(P,+Q,)为周期插入第三导频比特序列和第四导频比特序列, 以 此重复 n,次, P,、 Q,、 n,为正整数且 P,+Q,≠ P+Q, n'≠n; 所述第三导频比 特序列中值为 "0"的比特数量多于值为 "1"的比特数量;所述第四导频比特序列 中值为 "1"的比特数量多于值为 "0"的比特数量;或所述第三导频比特序列中值 为 "1"的比特数量多于值为 "0"的比特数量; 所述第四导频比特序列中值为" 0" 的比特数量多于值为 "1"的比特数量。
结合第一方面, 在第七种可能的实现方式中, 所述插入了导频比特序列 后的比特序列中的定帧字节所在位置, 与各个导频比特序列所在位置相错开。
根据本发明的第二方面, 提供一种第一信号处理设备, 包括: 业务信号 获取单元和导频获取单元; 所述业务信号获取单元, 包括: 第一适配器和解 码器, 所述第一适配器, 用于: 从包含有第一业务信号和第一导频信号的第 一信号中, 获取包含第五导频比特序列和第一业务信号的比特序列的比特序 列, 所述第五导频比特序列为对应所述第一导频信号的比特序列; 所述解码 器, 用于: 去除所述包含第五导频比特序列和第一业务信号的比特序列的比 特序列中的第五导频比特序列, 得到所述第一业务信号的比特序列; 所述导 频获取单元, 用于: 从所述第一信号第一信号中获取所述第一导频信号。
根据本发明的第三方面, 提供一种通信系统, 包括: 本发明任一实施例 所介绍的信号处理设备和本发明任一实施例所介绍的第一信号处理设备。
根据本发明的第四方面, 提供一种信号处理方法, 包括: 在待加载导频 信号的业务信号的比特序列中, 每隔预定数量的比特, 插入导频比特序列, 所述导频比特序列为用于产生导频信号的比特序列; 利用插入了导频比特序 列后的比特序列生成包含了所述业务信号和所述导频信号的信号。
结合第四方面, 在第一种可能的实现方式中, 所述导频比特序列包括: 列; 所述每隔预定数量的比特, 插入导频比特序列, 具体为: 以 (P+Q )为周 期插入第一导频比特序列和第二导频比特序列,在每个周期内,先连续插入 P 个第一导频比特序列, 再连续插入 Q个第二导频比特序列, 其中, 每两个相 邻导频比特序列之间的间隔为所述预定数量的比特, P、 Q为正整数。
结合第四方面的第一种可能的实现方式, 在第二种可能的实现方式中, 在所述所述每隔预定数量的比特, 插入导频比特序列之前, 所述方法还包括: 根据所述导频信号的调制深度参数, 以及 P和 Q的比例与调制深度参数的对 应关系, 确定 P和 Q的比例。
结合第四方面的第一种可能的实现方式, 在第三种可能的实现方式中, 在所述所述每隔预定数量的比特, 插入导频比特序列之前, 所述方法还包括: 根据所述导频信号的调制深度参数, 以及调制深度参数与导频比特序列中值 为' T' 的比特数量和值为" 0"的比特数量的比例的对应关系, 确定所述第一导 频比特序列中值为 "1" 的比特数量和值为" 0"的比特数量的比例,并确定所述 第二导频比特序列中值为 "1" 的比特数量和值为" 0"的比特数量的比例。
结合第四方面或第四方面的第一至三种可能的实现方式中的任意一种可 能的实现方式,在第四种可能的实现方式中, 在所述插入导频比特序列之前, 所述方法还包括: 获取需要由导频信号承载的导频信息二进制比特序列; 根 据所述导频信息的二进制比特序列, 确定不同的导频比特序列之间的排列方 式, 其中, 所述不同的导频比特序列之间以第一排列方式表示导频信息中的 二进制比特 "1", 所述不同的导频比特序列之间以第二排列方式表示导频信息 中的二进制比特" 0", 所述不同的导频比特序列至少包括第一导频比特序列、 第二导频比特序列。
结合第四方面的第四种可能的实现方式, 在第五种可能的实现方式中, 所述方法还包括: 通过以下方式表示导频信息中的二进制比特 "1": 以(P+Q ) 为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整 数; 通过以下方式表示导频信息中的二进制比特" 0": 以 (P+Q ) 为周期插入 第三导频比特序列和第四导频比特序列,用于表示导频信息的二进制比特" 0"; 所述第三导频比特序列中值为 "1"的比特数量和值为" 0"的比特数量的比例,与 所述第一导频比特序列中值为' T'的比特数量和值为" 0"的比特数量的比例不 同; 和 /或所述第四导频比特序列中值为 "Γ,的比特数量和值为 "0,,的比特数量 的比例,与第二导频比特序列中值为' T'的比特数量和值为" 0"的比特数量的比 例不同。
结合第四方面的第四种可能的实现方式, 在第六种可能的实现方式中, 所述方法还包括:通过以下方式表示所述导频信息的二进制比特 "1":以(P+Q ) 为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整 数; 通过以下方式表示所述导频信息的二进制比特" 0": 以(P,+Q,)为周期插 入第三导频比特序列和第四导频比特序列, 以此重复 n,次, P,、 Q,、 n,为正 整数且 P,+Q,≠P+Q, n'≠n; 所述第三导频比特序列中值为" 0,,的比特数量多于 值为 "1"的比特数量; 所述第四导频比特序列中值为 "1"的比特数量多于值为 "0"的比特数量; 或所述第三导频比特序列中值为 "1"的比特数量多于值为 "0" 的比特数量;所述第四导频比特序列中值为" 0"的比特数量多于值为 "1"的比特 数量。
结合第四方面, 在第七种可能的实现方式中, 所述插入了导频比特序列 后的比特序列中的定帧字节所在位置, 与各个导频比特序列所在位置相错开。
根据本发明的第五方面, 提供一种信号处理方法, 包括: 从包含有第一 业务信号和第一导频信号的第一信号第一信号中, 获取包含第五导频比特序 列和第一业务信号的比特序列的比特序列, 所述第五导频比特序列为对应所 述第一导频信号的比特序列; 去除所述包含第五导频比特序列和第一业务信 号的比特序列的比特序列中的第五导频比特序列, 得到所述第一业务信号的 比特序列; 从所述第一信号第一信号中获取所述第一导频信号。
本申请有益效果如下:
由于在本申请实施例中, 提供了一种信号处理设备, 包括: 编码器和适 配器; 编码器, 编码器, 用于在待加载导频信号的业务信号的比特序列中, 每隔预定数量的比特, 插入导频比特序列, 导频比特序列为用于产生导频信 号的比特序列; 适配器, 用于利用插入了导频比特序列后的比特序列生成包 含了业务信号和导频信号的信号。 也即是通过对业务信号进行编码来加载导 频信号, 故而不需要通过额外的调制器或者是通过调整调制业务信号的调制 器的管脚来加载导频信号, 故而达到了降低在业务信号中加载导频信号的成 本的技术效果。 附图说明
图 la为现有技术中通过光信号的调制器调制导频电信号的示意图; 图 lb为现有技术中通过额外的外调制器调制导频电信号的示意图; 图 2为本申请实施例中第一方面的信号处理设备的结构图;
图 3为本申请实施例中网络七层协议架构中的物理层示意图;
图 4 a为本申请实施例幅度调制的业务信号的比特流的示意图; 图 4b为本申请实施例中信号的频谱响应示意图;
图 4c为本申请实施例中业务信号中插入导频信号的示意图;
图 4d为本申请实施例中业务信号加载了导频信号的频谱示意图; 图 5 为本申请实施例中每隔预定间隔预定数量比特插入导频比特序列的 流程图;
图 6为本申请实施例第二方面的第一信号处理设备的结构图;
图 7为本申请实施例第三方面的网络系统的结构图;
图 8为本申请实施例第四方面的信号处理方法的流程图;
图 9为本申请实施例第五方面的信号处理方法方法的流程图;
图 10为本申请实施例一中信号处理设备的编码器 20所包含的功能模块 的示意图;
图 11a为本申请实施例二中信号处理设备的编码器 20所包含的功能模块 的示意图;
图 lib为本申请实施例二中在加载导频信息时每隔 M个比特插入 k个比 特的导频比特序列的示意图;
图 12a为本申请实施例三中发送端的信号处理方法的流程图;
图 12b为本申请实施例三中接收端对加载了导频信号的光信号解调的流 程图;
图 12c 为本申请实施例三中接收端从加载了导频信号的光信号中获取导 频信号的流程图。 具体实施方式
为了实现对导频信号的低成本调制, 本申请实施例这里提出的技术方案 中, 提供了一种信号处理设备, 包括: 编码器, 用于在待加载导频信号的业 务信号的比特序列中, 每隔预定数量的比特, 插入导频比特序列, 导频比特 序列为用于产生导频信号的比特序列; 适配器, 用于利用插入了导频比特序 列后的比特序列生成包含了业务信号和导频信号的信号。 也即是通过对业务 信号进行编码来加载导频信号, 故而不需要通过额外的调制器或者是通过调 整调制业务信号的调制器的管脚来加载导频信号, 故而达到了降低在业务信 号中加载导频信号的成本的技术效果。
下面将结合各个附图对本申请实施例技术方案的主要实现原理、 具体实 施方式及其对应能够达到的有益效果进行详细地阐述。
第一方面,本申请实施例提供一种信号处理设备,请参考图 2,具体包括: 编码器 20和适配器 21 ;
本申请实施例主要在如图 3所示的网络七层协议架构中的物理(Physical ) 层实现。如图 3所示, 物理层可包括协调(Reconciliation Sublayer, RS )子层、 物理编码 (Physical Coding Sublayer: PCS)子层、物理媒介适配( Physical Medium Attachment, PMA )子层、 物理介质相关( Physical Media Dependent, PMD ) 子层等, 其中编码器 10对应 PCS子层, 适配器 21对应 PMA子层。
编码器 20, 用于在待加载导频信号的业务信号的比特序列中, 每隔预定 数量的比特, 插入导频比特序列, 导频比特序列为用于产生导频信号的比特 序列; 导频比特序列导频比特序列导频比特序列;
适配器 21 , 用于利用插入了导频比特序列后的比特序列生成包含了业务 信号和导频信号的信号导频比特序列。
举例来说, 编码器 20例如为: 集成电路 ( Application Specific Integrated Circuit : ASIC )等专用芯片; 也可以是现场可编程门阵列 (Field - Programmable Gate Array: FPGA ); 还可以是基于通用处理器 (如 CPU等) 的程序或软件等等, 本发明实施例不作限制。
举例来说, 编码器 20在待加载导频信号的业务信号的比特序列中所插入 的导频比特序列, 指的是一串特定的比特, 可以仅仅为一种导频比特序列, 也可以包含多种导频比特序列, 例如: 包含第一导频比特序列和第二导频比 特序列。 在后续介绍中, 将主要以导频比特序列为第一导频比特序列和第二 导频比特序列为例进行介绍, 为了描述简单, 后续将用 OH0表示第一导频比 特序列, OH1表示第二导频比特序列。 举例来说,如果 k为 8, OHO例如为: 00000011、 OH1例如为: 11111100; 如图 k为 16, OH0例如为: 1110000000000001、 OH1例如为 :0001111111111110 等等, 如果 k为 1 , OH0为" 0", OH1为" 1", 其中 k可以为任意值, OH0和 OH1 也可以为任意导频比特序列, 本申请实施例不再详细列举, 并且不作限 制。
举例来说, 适配器 21例如为: 电调制器、 光调制器、 电输出接口等等; 以适配器 21为光调制器为例, 那么适配器 21用于用加载了导频比特序列的 比特序列调制光波, 从而将加载了导频比特序列的比特序列调制为加载了导 频信号的光信号; 以适配器 21为电调制器为例, 那么适配器 21用于用调制 加载了导频比特序列的比特序列调制电信号, 从而将加载了导频比特序列的 比特序列调制为包含业务信号和导频信号的电信号。
如图 4a所示,为幅度调制的业务信号的比特流,如果是二进制幅度调制, 那么用较高的幅度表示数据 "1", 用较低的幅度或者零幅度表示数据 "0"; 图 4b为业务信号的频语响应示意图, 该频谱响应示意图中仅包含幅频响应, 不 包含相频响应; 而如图 4c所示, 为在业务信号中插入导频信号的示意图, 在 业务信号中每隔 M个比特插入 k个比特的导频比特序列,上述 M个比特对应 的时长为 T,进而在业务信号中插入了导频比特序列之后,业务信号的频谱上 会出现幅度较高的谱线, 如图 4d所示, 这就表示在业务信号上已经加载了导 频信号。
可选的, 导频比特序列包括: OH0和 OH1在内的至少两种不同的导频比 特序列;
编码器 20具体用于, 以 (P+Q )为周期插入 OH0和 OH1 , 在每个周期 内, 先连续插入 P个 OH0, 再连续插入 Q个 OH1 , 其中, 每两个相邻导频比 特序列之间的间隔为预定数量的比特, P、 Q为正整数。
举例来说,如图 5所示,每隔预定数量的比特(例如: 图 5中的周期 T1 ), 就插入 k个比特的导频比特序列 OH0或 OH1 , 在插入 P个 OH1后, 再插入 Q个 OH0; 然后再插入 P个 OH1 , 再插入 Q个 OH0... ...; 如此重复, 进而获 得获得重复周期 Tl为:
T I =(P+Q) ·τ [l] 那么, 在进行傅里叶级数展开时, 其基频 (记为 fl ) 对应的周期是 1/((P+Q)-T), 也就是说, 利用上述比特插入方法, 产生了频率为 1/((P+Q) ) 的导频。
除了产生基频 1/((P+Q>T)之外, 还可以产生高次频, 如二次频 f2=2/((P+Q)-T), 三次频 fi=3/((P+Q>T), ... ... , 根据所需要的导频频率, 也可 以使用这些高次频。 进而通过对 P和 Q的调整, 从而能够获得频率和 /或导频 幅度不同的导频信号。
本文中术语"和 /或,,, 仅仅是一种描述关联对象的关联关系, 表示可以存 在三种关系, 例如, A和 /或 B , 可以表示: 单独存在 A, 同时存在 A和 B , 单独存在 B这三种情况。
可选的, 编码器 20还用于:
根据导频信号的调制深度参数以及 P和 Q的比例与调制深度参数的对应 关系, 确定 P和 Q的比例。
选择通过 P和 Q产生基频时, P和 Q越接近, 调制深度越深, 故而可以 通过选择合适的 P和 Q来获得一个较佳的调制深度。
举例来说,可以将 OH0和 OH1取固定值,然后分别取不同的多组 P和 Q 比例, 在业务信号的接收端分别测定其对应的调制深度参数, 其中调制深度 参数等于导频信号幅度与业务信号的幅度的比值, 从而获得多组 P和 Q的比 例与调制深度参数对应关系。
而通常情况下, 调制深度越高, 就越有利于检测导频信号, 但可能不利 于业务信号的传输; 而调制深度越低, 越不利于检测导频信号, 但可能越利 于业务信号的传输, 故而在实际应用中, 可以根据需求设定合适的调制深度 参数, 进而通过调制深度参数控制 P和 Q的比例。
可选的, 在 P与 Q之和为偶数时, P和 Q相等; 或
在 P与 Q之和为奇数时, P与 Q之差的绝对值为 1。 例如, 如果 P+Q=16, 那么可以控制 P=Q=8, 如果 P+Q=100, 那么可以 控 'J P=Q=50; ^口果 P+Q=9, 刃 P么可以控 'J P=4, Q=5或者 P=5, Q=4; ^口果 P+Q=101 , 那么可以控制 P=50, Q=51或者 P=51 , Q=50等等, 当然 P和 Q 还可以为其它值, 本申请实施例不再详细列举, 并且不作限制。 在这种情况 下, P和 Q最接近, 进而能够在其它条件相同的情况下, 获得最高的调制深 度。
通常的, OH0中值为 "0"的比特数量多于值为 "1"的比特数量, OH1 中值 为' T'的比特数量多于值为 "0"的比特数量; 或
OH0中值为 "1"的比特数量多于值为 "0"的比特数量, OH1中值为 "0"的比 特数量多于值为" 1"的比特数量。 (OH0和 OH1这两种导频比特序列的命名是 相对的。)
举例来说, OH0例如为: 00011111 , OH1例如为: 11100000; 或
OH0例如为: 11100111 , OH1例如为: 00011000; 或
OH0例如为: 01010000, OH1例如为: 10101111 ; 或
OH0例如为: 01010100, OH0例如为: 10101011等等。
在这种情况下, 由 OH0和 OH1构成的以 (P+Q>T为周期的信号会在频 域上生成具有一定幅度的频率为 1/((P+Q>T)的谱线。
可选的, 编码器 20, 还用于:
根据导频信号的调制深度参数、 以及调制深度参数与导频比特序列中值 为' T'的比特数量和值为" 0"的比特数量的比例的对应关系, 确定 OH0中值为 "Γ,的比特数量和值为 "0"的比特数量的比例, 以及确定 OH1中值为 "1"的比特 数量和值为" 0"的比特数量的比例。
举例来说,在 OH0为" 0"的比特数量多于 "1"的比特数量的导频比特序列、 OH1为 "1 "的比特数量多于" 0"的比特数量的导频比特序列时, OH0中" 0"的比 例越高, 调整深度越深, OH1 中 "1"的比例越高, 调制深度越深; 而在 OH0 为 "1 "的比特数量多于" 0"的比特数量的导频比特序列、 OH1为" 0"的比特数量 多于 "1 "的比特数量的导频比特序列时, OH0 中' T'的比例越高, 调整深度越 深, OH1中" 0"的比例越高, 调制深度越深。 故而可以通过控制 OH0和 OH1 中 " 1 "和" 0"的比例, 来产生合适的调制深度。
举例来说, 可以预先获取调制深度参数与导频比特序列中值为 "1"的比特 数量和值为" 0,,的比特数量的比例的对应关系, 该预先获取过程又可以分为多 种情况下, 下面列举其中的两种进行介绍, 当然, 在具体实施过程中, 不限 于以下两种情况。
一种可能的实现方式是, 在初始化阶段, 保持 P和 Q的比例不变, 而改 变 OH0和 OH1中值为 "Γ,的比特数量和值为 "0"的比特数量的比例,从而在接 收端获得多组调制深度参数, 进而确定 OH0和 OH1中值为 "1"的比特数量和 值为" 0"的比特数量的比例与调制深度参数之间的对应关系。
在实际使用阶段, 在获取导频信号的调制深度参数之后, 直接从对应关 系中读取该调制深度参数对应的 OH0中值为 "1"的比特数量和值为" 0"的比特 数量的比例, 以及 OH1中值为 "Γ,的比特数量和值为 "0"的比特数量的比列。
另一种可能的实现方式是, 在初始化阶段, 可以将 P和 Q的比例、 OH0 中值为 "1"的比特数量和值为" 0"的比特数量的比例、 OH1中值为 "1 "的比特数 量和值为" 0"的比特数量的比例都作为变量, 获取多组调制深度参数, 进而最 后确定出 P和 Q的比例、 OH0中值为 "1"的比特数量和值为" 0"的比特数量的 比例、 OH1 中值为 "1"的比特数量和值为" 0"的比特数量的比例于调制深度参 数的对应关系。
而在实际应用时, 在获得调制深度参数时, 就可以在对应关系中确定其 对应的 P和 Q的比例、 OH0中值为 "1"的比特数量和值为" 0"的比特数量的比 例、 OH1 中值为 "Γ,的比特数量和值为 "0"的比特数量的比例, 而由于存在三 组变量, 故而有可能一个调制深度参数对应多组 P和 Q的比例、 OH0中值为 "1"的比特数量和值为" 0"的比特数量的比例、 OH1中值为 "1 "的比特数量和值 为" 0"的比特数量的比例, 故而可以随机从中选择一组使用。
可选的, OH0, 具体为: 值为" 0"的比特数量为 1的导频比特序列; 第二 导频比特序列, 具体为: 值为' T'的比特数量为 1的导频比特序列; 或 OHO, 具体为: 值为" 1"的比特数量为 1的导频比特序列; 第二导频比特 序列, 具体为: 值为" 0"的比特数量为 1的导频比特序列。 也即是 OH0中值为 "1"的比特数量为 1个, OH1中值为 "0"的比特数量为 1个。
举例来说, 以 k=8为例, 假设 OH0例如为: 00000000, OH0例如为: 11111111 ; 或者 OH0为: 11111111 , OH1为 00000000等等, 在这种情况下, 由于 OH0中值为 "0"的比特数量最多且 OH1中值为 "1 "的比特数量最高,或者 OH0中值为 "1 "的比特数量最多且 OH1中值为 "0"的比特数量最高, 故而能够 获得最深的调制深度。
然而, 在实际系统设计中, 连续的 "0,,或 "Γ,可能会影响时钟恢复, 因此, 可选的, OH0例如为: 00000010, OH0例如为: 11111101 , 这样可以在连续 的" 0"或" 1"均不超过若干个的前提下获得最深的调制深度。
可选的, 编码器 20还用于:
在插入导频比特序列之前, 获取需要由导频信号承载的导频信息的二进 制比特序列;
根据导频信息的二进制比特序列, 确定不同的导频比特序列之间的排列 方式, 其中, 不同的导频比特序列之间以第一排列方式表示导频信息中的二 进制比特 "1", 不同的导频比特序列之间以第二排列方式表示导频信息中的二 进制比特" 0", 不同的导频比特序列至少包括 ΟΗ0、 ΟΗ1。
通常情况下, 导频信号通常情况下用于功率监测、 波长路径追踪等网络 监控 /管理功能, 其本身是不携带信息的, 而在本申请实施例中, 将导频信息 附加到导频信号上进行传输, 故而不需要增加额外的数据传输通道, 进而能 够节省数据传输的开销, 通常这些导频信息可以用于控制、 管理、 配置等等。
举例来说, 导频信息例如为: 光网络中信号或者设备或者链路的状态信 息, 光网络或设备的管理或控制信息等等等等; 导频信息信息可以通过用户 界面 (如网络管理系统)输入、 可以由网络设备自动获得等等, 本发明实施 例不作限制。
可选的, 编码器 20, 具体用于通过以下方式表示导频信息中的二进制比 特 T:
以 (P+Q ) 为周期插入 OHO和 OHl , 以此重复 n次, n为正整数; 编码器 20 , 具体用于通过以下方式表示导频信息中的二进制比特" 0": 以(P+Q )为周期插入第三导频比特序列和第四导频比特序列, 用于表示 导频信息的二进制比特" 0";
第三导频比特序列中值为 " 1"的比特数量和值为 "0"的比特数量的比例与 第一导频比特序列中值为 "1 "的比特数量和值为 "0"的比特数量的比例不同;和
/或
第四导频比特序列中值为 " 1"的比特数量和值为 "0"的比特数量的比例与 第二导频比特序列中值为 "1 "的比特数量和值为 "0"的比特数量的比例不同。
在后续撰写中为了简便起见, 将用 OH0,表示第三导频比特序列, ΟΗΓ 表示第四导频比特序列。
举例来说, 假设导频信息对应的二进制比特序列为 0110 , 那么可以确定 出导频信息 0110对应的 OH0和 OH1的排列方式为: (P个 ΟΗΟ'+Q个 ΟΗΓ ) xn、 ( P个 OH0+Q个 OHl ) xn、 ( P个 OH0+Q个 OHl ) xn、 (P个 OHO'+Q 个 ΟΗΓ) χη, 在确定 ΟΗ0和 OHl的排列方式之后, 就可以按照该排列方式 插入在业务信号中插入不同的导频比特序列, 当然, 在具体实施过程中, 对 于 n、 P、 Q釆用何种取值, 本申请实施不作限制。
上述携带导频信息的实现方式, 实际上是进行的二进制幅度调制即二进 制幅移键控 (2ASK)调制, 或称开关键控 (OOK )调制, 该方案相对常用、 简 单且易实现。
而 OH0与 OH0,或 OH1与 ΟΗΓ中的至少一个不同, 则是为了保证能够 产生不同的导频幅度, 进而在接收端可以根据不同的导频幅度识别出不同的 导频信息比特。
可选的, OH0'中值为 "1"的比特数量和值为" 0"的比特数量相同或者 OH0' 中值为 "1"的比特数量和值为" 0"的比特数量相差为 1 ; 和 /或
ΟΗΓ中值为 "1"的比特数量和值为" 0"的比特数量相同或者 ΟΗΓ中值为 "1 "的比特数量和值为" 0"的比特数量相差为 1。
举例来说, 在 OH0中值为 "1"和值为 "0"的比特数量之和为偶数时, OH0 中值为 "1"和值为 "0"的比特数量相同,例如: 00001111 ;而在在 OH0中值为 "1" 和值为 "0"的比特数量之和为奇数时, OH0中值为 "1"和值为 "0"的比特数量相 差为 1 , 例如: 000011111、 000001111等等。 在这种情况下, 且其它条件相同 时, 能够获得最低的调制深度, 对于 OH1也是如此, 也就是在这种情况下, 不会产生导频或者导频幅度很低, 而由于 OH0和 OH1则刚好相反, 其中' T' 的比特数量多于" 0,,的比特数量或者" 0"的比特数量多于 "1"的比特数量, 在这 种情况下, 产生的导频幅度较高, 从而能够使接收端能够更加准确的分辨出
OH0、 0H1、 OHO'和 ΟΗΓ所表示的导频信息,达到提高识别精度的技术效果。
下面描述另一种携带导频信息的实现方式, 即通过二进制频率调制即二 进制频移键控 (2FSK)调制, 该方案潜在的提供更好的导频信号检测性能。
可选的, 编码器 20, 具体用于通过以下方式表示导频信息的二进制比特 以 (P+Q ) 为周期插入 ΟΗ0和 OH1 , 以此重复 η次, η为正整数; 编码器 20, 具体用于通过以下方式表示导频信息的二进制比特" 0":
以 (P,+Q,)为周期插入 OHO,和 ΟΗΓ , 以此重复 n,次, P,、 Q,、 n,为 正整数且 P,+Q,≠P+Q, n'≠n;
OH0'中值为 "0"的比特数量多于值为 "1"的比特数量; ΟΗΓ中值为 "1 "的比 特数量多于值为" 0"的比特数量; 或
OH0'中值为 "1 "的比特数量多于值为 "0"的比特数量; ΟΗΓ中值为 "0"的比 特数量多于值为 "1"的比特数量。
举例来说, ΟΗ0,例如为 00001010, om,例如为 llllOlOl , 或者 OH0, 例如为 11011011 , om,例如为 00110000等等, 本申请实施例不作限制。
举例来说, 导频信息对应的二进制比特序列还是为 0110, 那么导频信息 所对应的导频比特序列排列方式为:( P'个 OH0'+Q'个 OH1 ' )*η'、( Ρ个 OH0+Q 个 OH1 ) *n、 ( P个 OH0+Q个 Om ) *n、 ( P个 OH0'+Q个 ΟΗΓ ) *n,在确 定导频比特序列的排列顺序之后, 就可以按照排列顺序在业务信号中依次插 入对应的导频比特序列。
可选的, OH0'与 OH0相同, ΟΗΓ与 OH1相同。
举例来说, 如果 OH0为 01010000, OH1 为 10101111 , 那么 OH0'也为
01010000, om,也为 ιοιοιιιι , 在这种情况下, 由于传输导频信息时, 只需 要设计两种导频比特序列 , 故而达到了降低设计导频比特序列种类的技术效 果。 各个导频比特序列所在位置相错开。 举例来说, 比特序列的定帧字节指的是 比特序列的帧的头部的一些字节, 用来指示这是一个帧的开始, 由于定帧字 节所在位置与各个导频比特序列所在位置错开, 故而不会因为导频比特序列 妨碍业务信号的定帧, 从而能更加方便的去除导频比特序列。
可选的, 编码器 20, 还用于:
在业务信号中插入导频比特序列之后, 将包含导频比特序列的业务信号 的比特率调整为 R<M+k)/M或者保持不变;
其中, R为在插入导频比特序列之前业务信号的比特率, M为预定间隔, k为导频比特序列的比特数量。
举例来说, 如果将比特率调整为 R<M+k)/M, 那么在业务信号中插入导 频比特序列之后, 业务信号的净比特率依然为 R, 在这种情况下, 单位时间 传输的实际有用的业务信号的比特数不会发生变化。
而如果保持业务信号的比特率不不变, 由于不需要重新调整比特率, 故 而具有降低信号处理设备处理负担的技术效果。
可选的, 编码器 20插入导频比特序列, 具体为: 在业务信号成帧之后, 在比特序列中, 每隔预定数量的比特, 插入导频比特序列。
举例来说, 也就是在业务信号成帧之后, 直接在信号中插入导频信号即 可, 不需要再作其它处理, 而在接收端也可以直接提取出导频信号, 从而达 到了插入和提取导频比特序列更加方便的技术效果。 第二方面, 基于同一发明构思, 本发明实施例提供一种第一信号处理设 备, 请参考图 6, 包括: 业务信号获取单元 60和导频获取单元 61 ;
业务信号获取单元 60, 包括: 第一适配器 60a和解码器 60b, 第一适配 器 60a, 用于: 第一适配器和解码器, 第一适配器, 用于: 从包含有第一业务 信号和第一导频信号的第一信号中, 获取包含第五导频比特序列和第一业务 信号的比特序列的比特序列, 第五导频比特序列为对应第一导频信号的比特 序列; 解码器 60b, 用于: 去除包含第五导频比特序列和第一业务信号的比特 序列的比特序列中的第五导频比特序列, 得到第一业务信号的比特序列; 导 频获取单元 61 , 用于从第一信号中获取第一导频信号。
导频获取单元 61从第一信号中获取的第一导频信号具体为: 从接口信号 中获取导频信号的频率、 幅度、 调制深度、 导频信息中的一个或多个信息。
第三方面, 基于同一发明构思, 本发明实施例提供一种通信系统, 请参 考图 7 , 具体包括:
本发明实施例第一方面介绍的信号处理设备 70;
本发明实施例第二方面介绍的第一信号处理设备 71。
该信号处理设备 70和第一信号处理设备 71可以位于同一设备, 也可以 为单独的设备, 本发明实施例不作限制。
第四方面, 基于同一发明构思, 本发明实施例提供一种信号处理方法, 请参考图 8, 包括:
步骤 S801 : 在待加载导频信号的业务信号的比特序列中, 每隔预定数量 的比特, 插入导频比特序列, 导频比特序列为用于产生导频信号的比特序列; 步骤 S802: 利用插入了导频比特序列后的比特序列生成包含了业务信号 和导频信号的信号。 可选的, 导频比特序列包括: OH0和 OH1在内的至少两 种不同的导频比特序列;
每隔预定数量的比特, 插入导频比特序列, 具体为: 以(P+Q )为周期插 入 OH0和 OH1 ,在每个周期内 ,先连续插入 P个 OH0,再连续插入 Q个 OH1 , 其中, 每两个相邻导频比特序列之间的间隔为预定数量的比特, P、 Q为正整 数。
可选的, 在以 (P+Q )为周期插入 OH0和 OH1之前, 方法还包括: 根据导频信号的调制深度参数, 以及 P和 Q的比例与调制深度参数的对 应关系, 确定 P和 Q的比例。
可选的, OH0中值为 "0"的比特数量多于值为 "1"的比特数量, OH1 中值 为' T'的比特数量多于值为 "0"的比特数量; 或
OH0中值为 "1"的比特数量多于值为 "0"的比特数量, OH1中值为 "0"的比 特数量多于值为 "1"的比特数量。
可选的, 在每隔预定数量的比特, 插入导频比特序列之前, 方法还包括 根据导频信号的调制深度参数从调制深度参数, 以及调制深度参数与导 频比特序列中值为 "1"的比特数量和值为" 0"的比特数量的比例的对应关系中, 确定 OH0中值为 "1"的比特数量和值为" 0,,的比特数量的比例,以及确定 OH1 中值为 "1 "的比特数量和值为" 0"的比特数量的比例。
可选的, OH0, 具体为: "0"的比特数量为 1的导频比特序列; OH1 , 具 体为: "1"的比特数量为 1的导频比特序列; 或
OH0, 具体为: "1"的比特数量为 1的导频比特序列; OH1 , 具体为: "0" 的比特数量为 1的导频比特序列。
可选的, 方法还包括:
获取需要由导频信号承载的导频信息的二进制比特序列;
根据导频信息的二进制比特序列, 确定不同的导频比特序列之间的排列 方式, 其中, 不同的导频比特序列之间以第一排列方式表示导频信息中的二 进制比特 "1", 不同的导频比特序列之间以第二排列方式表示导频信息中的二 进制比特" 0", 不同的导频比特序列至少包括 ΟΗ0、 ΟΗ1。
可选的, 方法还包括:
通过以下方式表示导频信息中的二进制比特 "1":
以 (P+Q ) 为周期插入 OH0和 OH1 , 以此重复 n次, n为正整数; 通过以下方式表示导频信息中的二进制比特" 0": 以( P+Q )为周期插入 OHO,和 ΟΗΙ' ,用于表示导频信息的二进制比特" 0";
OH0'中值为 "1"的比特数量和值为" 0"的比特数量的比例与第一导频比特 序列中值为 "1 "的比特数量和值为" 0"的比特数量的比例不同; 和 /或
ΟΗΓ中值为 "1"的比特数量和值为" 0"的比特数量的比例与第二导频比特 序列中值为 "1 "的比特数量和值为" 0"的比特数量的比例不同。
可选的, OH0'中值为 "1"的比特数量和值为" 0"的比特数量相同或者 OH0' 中值为 "1"的比特数量和值为" 0"的比特数量相差为 1 ; 和 /或
ΟΗΓ中值为 "1"的比特数量和值为" 0"的比特数量相同或者 ΟΗΓ中值为 "1 "的比特数量和值为" 0"的比特数量相差为 1。
可选的, 方法还包括:
通过以下方式表示导频信息的二进制比特 "1":
以 (P+Q ) 为周期插入 ΟΗ0和 OH1 , 以此重复 η次, η为正整数; 通过以下方式表示导频信息的二进制比特 "0":
以 (P,+Q,)为周期插入 OHO,和 ΟΗΓ , 以此重复 n,次, P,、 Q,、 n,为 正整数且 P,+Q,≠P+Q, n'≠n;
OH0'中值为 "0"的比特数量多于值为 "1"的比特数量; ΟΗΓ中值为 "1 "的比 特数量多于值为" 0"的比特数量; 或
OH0'中值为 "1 "的比特数量多于值为 "0"的比特数量; ΟΗΓ中值为 "0"的比 特数量多于值为 "1"的比特数量。
可选的, OH0'与 ΟΗ0相同, ΟΗΓ与 OH1相同。 各个导频比特序列所在位置相错开。
第五方面, 基于同一发明构思, 本发明实施例提供一种信号处理方法, 请参考图 9, 包括:
步骤 S901 : 从包含有第一业务信号和第一导频信号的第一信号中, 获取 包含第五导频比特序列和第一业务信号的比特序列的比特序列, 第五导频比 特序列为对应第一导频信号的比特序列; 步骤 S902: 去除包含第五导频比特序列和第一业务信号的比特序列的比 特序列中的第五导频比特序列, 得到第一业务信号的比特序列;
步骤 S903: 从第一信号中获取第一导频信号。
以下通过几个具体的实施例来介绍本申请实施例所介绍的信号处理设备 和信号处理方法, 需要说明的是, 本申请中的实施例只用于解释本申请, 而 不能用于限制本申请。 一切符合本申请思想的实施例均在本申请的保护范围 之内, 本领域技术人员自然知道应该如何根据本申请的思想进行变形。
实施例一
在本实施例中以导频信号中不包含导频信息为例介绍本申请实施例中的 信号处理设备和信号处理方法。
如图 10所示, 信号处理设备的编码器 20, 又包括以下功能模块: 导频图案存储单元 100, 用于存储导频比特序列 OH0和 OH1 , 其中导频 比特序列包含 8个比特 (也即 k=8 ), OHl为" 11111110", OHO为" 00000001";
导频参 ¾ P、 Q计算单元 101 , 用于通过导频频率计算获得 P和 Q, 假设 P=Q=2;
导频比特流生成单元 102, 用于接收导频参数 P、 Q计算单元传输的 P和 Q,并从导频图案存储单元 140获取 OH0和 OH1 ,然后通过 P和 Q、以及 OH0 和 OH1 生成导频比特流数据, 所生成的比特流数据具体为: 00000001000000011111111011111110 (也即: OH0OH0OH1OH1 );
比特拼接单元 103 ,用于接收导频比特流生成单元 142传输的导频比特流 数据, 以及高速业务比特流对应的业务信号, 然后在业务信号中每隔 M个比 特插入 k个比特的导频比特序列, 从而输出带导频信号的高速业务比特流。
实施例二
在本实施例中以导频信号中包含导频信息、以 2FSK方式实现为例介绍本 申请实施例中的信号处理设备和信号处理方法。
请参考图 11a, 信号处理设备的编码器 20, 又包括以下功能模块: 导频图案存储单元 110, 用于存储导频图案 ΟΗ0、 ΟΗ1、 ΟΗ0'、 ΟΗΙ' , ^¾ k=8, OHO为 00000001 , OH1为 11111110, OHO'为 00000001 , ΟΗΓ为 11111110;
导频参 ¾ P、 Q计算单元 111 , 用于根据导频频率 1计算获得 P和 Q; 导频参数 P'、 Q'计算单元 112, 用于根据导频频率 2计算获得 P,和 Q,; 导频比特流生成单元 113 , 用于根据卩、 Q、 n、 OH0以及 OH1生成用于 表示导频信息中" 0,,的导频比特流, 根据 P,、 Q,、 n,、 OH0'以及 ΟΗΓ生成用 于表示导频信息中 "Γ,的导频比特流;
比特拼接模块 114,用于获取导频比特流生成单元 113生成的表示导频信 息中" 0,,和 "Γ,的导频比特流, 并且获得高速业务比特流对应的业务信号、 以及 需要加载的导频信息的二进制比特序列;然后才艮据" 0"和 "1 "的导频比特流和导 频信息的二进制比特序列, 在业务信号中每隔 Μ个比特插入 k个比特的导频 比特序列, 进而获得带导频信息的高速业务比特流, 如图 lib所示, 如果在 U 时间内插入的是表示导频信息 "1 "的导频比特流, 则由于其由 (P+Q)个 OH0和 OH1组成, 故而其导频频率为 1/((P+Q T), 而如果在 U时间内插入的是" 0" 的导频比特流, 则由于其由 (P'+Q')个 OH0'和 ΟΗΓ组成, 故而其导频频率为 1/((P'+Q')-T), 故而在导频信号接收端检测到导频信号之后, 可以通过 U时间 内对应的导频频率来确定其为表示的导频信息为 "0"或者" 1"。 相应的, 时间 长度 U为导频信息的比特周期。
实施例三
本申请实施例用于给光传送网 (OTN: Optical Transport Network)的业务 信号加载导频。
如图 12a所示, 发送端侧的信号处理方法具体包括以下步骤:
步骤 S1201 : 给业务信号净荷比特加 FEC ( Forward Error Correction: 前 向纠错)。
步骤 S1202: 对加上 FEC的业务信号进行扰码处理。
步骤 S1203: 给进行扰码处理过的业务信号加帧头等,进而使业务信号成 帧。 步骤 S1204: 给成帧的业务信号加导频比特序列, 在 OTN中业务信号格 式为 OTU(Optical channel Transport Unit,光通道传送单元),例如:给 OOK (二 进制启闭键控: On-Off Keying)调制的 OTU3 ( Optical channel Transport Unit 3 ) 加载导频, 加载前的 OTU3信号比特率约为 10.709 Gb/s (吉比特每秒;)。 比如 可以选择 M=6528, k=64, 即每 916个高速数据字节插入 8个字节的导频比 特序列。 916个高速数据字节所对应的时间长度 Τ=0.6843μδ。如果插入的每个 8字节的导频比特序列都相同, 那么所加载的导频频率为 1/Τ=1.461ΜΗζ。 如 果插入的每个 8字节的导频比特序列按前述的 OH1 , ΟΗ0周期重复, P+Q=100 即周期为 100T, 则加载的导频频率为 14.61kHz。 按照前述规则, OH1可以为 OxFEFEFEFEFEFEFEFE, OH0可以为 0x0101010101010101。 其中, 在加载导 频时要避开业务信号的定帧字节,因为 OTU帧头包含 7字节的定帧字节, OTU 帧长为 16320字节, 因此优选的 M>7且能被 16320整除。
步骤 S1205: 通过加载了导频信号的业务信号调制直流光信号,进而得到 加载了导频信号的光信号。
而在加载了导频的光信号传输至接收端之后,请参考图 16b, 具体可以包 括如下获取业务信号的净荷比特的流程:
步骤 S1206:位于接收端的第一信号处理设备在接收到包含导频信号的光 信号之后进行光电转换, 进而获得包含导频信号的业务信号;
步骤 S1207: 对包含导频信号的业务信号进行定帧处理;
步骤 S1208: 从包含导频信号的业务信号中去除导频信号,接收端可以通 过导频信号的插入位置来移除导频信号;
步骤 S1209: 对去除导频信号的业务信号解帧、 去除帧头;
步骤 S1210: 对去除帧头的业务信号进行解扰处理;
步骤 S1211 : 对解扰处理过的业务信号解除 FEC。
并且, 请参考图 12c, 还可以包括如下获取导频信号的流程:
步骤 S1212: 对接收到包含导频信号的光信号进行光电转换,进而获得包 含导频信号的业务信号; 步骤 S1213 : 对包含导频信号的业务信号进行电放大、 模数转换; 步骤 S1214: 对进行电放大、 模数转换后的信号进行数字信号处理; 步骤 S1215: 从经过数字信号处理的信号中获取导频信号的频率、 幅度、 调制深度、 导频信息中的一个或多个信息。
本申请提供的一个或多个技术方案, 至少具有如下技术效果或优点: 由于在本申请实施例中, 提供了一种信号处理设备, 包括: 编码器和适 配器; 编码器, 编码器, 用于在待加载导频信号的业务信号的比特序列中, 每隔预定数量的比特, 插入导频比特序列, 导频比特序列为用于产生导频信 号的比特序列; 适配器, 用于利用插入了导频比特序列后的比特序列生成包 含了业务信号和导频信号的信号。 也即是通过对业务信号进行编码来加载导 频信号, 故而不需要通过额外的调制器或者是通过调整调制业务信号的调制 器的管脚来加载导频信号, 故而达到了降低在业务信号中加载导频信号的成 本的技术效果。
本领域内的技术人员应明白, 本申请的实施例可提供为方法、 系统、 或 计算机程序产品。 因此, 本申请可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的形式。 而且, 本申请可釆用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器、 CD-ROM、 光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、 设备(系统)、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。

Claims

权 利 要 求
1、 一种信号处理设备, 其特征在于, 包括: 编码器和适配器;
所述编码器, 用于在待加载导频信号的业务信号的比特序列中, 每隔预 定数量的比特, 插入导频比特序列, 所述导频比特序列为用于产生导频信号 的比特序列; 述业务信号和所述导频信号的信号。
2、 如权利要求 1所述的信号处理设备, 其特征在于:
所述导频比特序列包括: 第一导频比特序列和第二导频比特序列在内的 至少两种不同的导频比特序列;
所述编码器具体用于, 以 (P+Q )为周期插入第一导频比特序列和第二导 频比特序列, 在每个周期内, 先连续插入 P个第一导频比特序列, 再连续插 入 Q个第二导频比特序列, 其中, 每两个相邻导频比特序列之间的间隔为所 述预定数量的比特, P、 Q为正整数。
3、如权利要求 2所述的信号处理设备, 其特征在于, 所述编码器还用于: 根据所述导频信号的调制深度参数, 以及 P和 Q的比例与调制深度参数 的对应关系, 确定 P和 Q的比例。
4、 如权利要求 2所述的信号处理设备, 其特征在于, 所述编码器, 还用 于:
根据所述导频信号的调制深度参数, 以及调制深度参数与导频比特序列 中值为 "1" 的比特数量和值为" 0"的比特数量的比例的对应关系, 确定所述第 一导频比特序列中值为 "1" 的比特数量和值为" 0"的比特数量的比例,并确定 所述第二导频比特序列中值为 "1" 的比特数量和值为" 0"的比特数量的比例。
5、 如权利要求 1至 4任意一项所述的信号处理设备, 其特征在于, 所 述编码器还用于:
在插入导频比特序列之前, 获取需要由导频信号承载的导频信息二进制 比特序列;
根据所述导频信息的二进制比特序列, 确定不同的导频比特序列之间的 排列方式, 其中, 所述不同的导频比特序列之间以第一排列方式表示导频信 息中的二进制比特 "1", 所述不同的导频比特序列之间以第二排列方式表示导 频信息中的二进制比特" 0", 所述不同的导频比特序列至少包括第一导频比特 序列、 第二导频比特序列。
6、 如权利要求 5所述的信号处理设备, 其特征在于, 所述编码器, 具体 用于通过以下方式表示导频信息中的二进制比特 "1":
以(P+Q )为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整数;
所述编码器, 具体用于通过以下方式表示导频信息中的二进制比特" 0": 以(P+Q )为周期插入第三导频比特序列和第四导频比特序列, 用于表示 导频信息的二进制比特" 0";
所述第三导频比特序列中值为 "Γ,的比特数量和值为 "0,,的比特数量的比 例,与所述第一导频比特序列中值为 "1 "的比特数量和值为" 0"的比特数量的比 例不同; 和 /或
所述第四导频比特序列中值为 "Γ,的比特数量和值为 "0,,的比特数量的比 例,与第二导频比特序列中值为 "1 "的比特数量和值为" 0"的比特数量的比例不 同。
7、 如权利要求 5所述的信号处理设备, 其特征在于, 所述编码器, 具体 用于通过以下方式表示所述导频信息的二进制比特" 1":
以(P+Q )为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整数;
所述编码器,具体用于通过以下方式表示所述导频信息的二进制比特 "0": 以 (P,+Q,)为周期插入第三导频比特序列和第四导频比特序列, 以此重 复 n,次, P,、 Q,、 n,为正整数且 P,+Q,≠P+Q, n,≠n;
所述第三导频比特序列中值为" 0"的比特数量多于值为 "1"的比特数量;所 述第四导频比特序列中值为 "1"的比特数量多于值为 "0"的比特数量; 或 所述第三导频比特序列中值为 "1"的比特数量多于值为 "0"的比特数量;所 述第四导频比特序列中值为 "0"的比特数量多于值为 "1"的比特数量。
8、 如权利要求 1所述的信号处理设备, 其特征在于, 所述插入了导频比 特序列后的比特序列中的定帧字节所在位置, 与各个导频比特序列所在位置 相错开。
9、 一种第一信号处理设备, 其特征在于, 包括: 业务信号获取单元和导 频获取单元;
所述业务信号获取单元, 包括: 第一适配器和解码器, 所述第一适配器, 用于: 从包含有第一业务信号和第一导频信号的第一信号中, 获取包含第五 导频比特序列和第一业务信号的比特序列的比特序列, 所述第五导频比特序 列为对应所述第一导频信号的比特序列; 所述解码器, 用于: 去除所述包含 第五导频比特序列和第一业务信号的比特序列的比特序列中的第五导频比特 序列, 得到所述第一业务信号的比特序列;
所述导频获取单元, 用于: 从所述第一信号第一信号中获取所述第一导 频信号。
10、 一种通信系统, 其特征在于, 包括: 如权利要求 1至 8任意一项所 述信号处理设备和如权利要求 9所述的第一信号处理设备。
11、 一种信号处理方法, 其特征在于, 包括:
在待加载导频信号的业务信号的比特序列中, 每隔预定数量的比特, 插 入导频比特序列, 所述导频比特序列为用于产生导频信号的比特序列; 导频信号的信号。
12、 如权利要求 11所述的方法, 其特征在于:
所述导频比特序列包括: 第一导频比特序列和第二导频比特序列在内的 至少两种不同的导频比特序列;
所述每隔预定数量的比特, 插入导频比特序列, 具体为: 以 (P+Q )为周期插入第一导频比特序列和第二导频比特序列, 在每个周 期内, 先连续插入 P个第一导频比特序列, 再连续插入 Q个第二导频比特序 列, 其中, 每两个相邻导频比特序列之间的间隔为所述预定数量的比特, P、
Q为正整数。
13、 如权利要求 12所述的方法, 其特征在于, 在所述所述每隔预定数量 的比特, 插入导频比特序列之前, 所述方法还包括:
根据所述导频信号的调制深度参数, 以及 P和 Q的比例与调制深度参数 的对应关系, 确定 P和 Q的比例。
14、 如权利要求 12所述的方法, 其特征在于, 在所述所述每隔预定数量 的比特, 插入导频比特序列之前, 所述方法还包括:
根据所述导频信号的调制深度参数, 以及调制深度参数与导频比特序列 中值为 "1" 的比特数量和值为" 0"的比特数量的比例的对应关系, 确定所述第 一导频比特序列中值为 "1" 的比特数量和值为" 0"的比特数量的比例,并确定 所述第二导频比特序列中值为 "1" 的比特数量和值为" 0"的比特数量的比例。
15、 如权利要求 11至 14任意一项所述的方法, 其特征在于, 在所述插 入导频比特序列之前, 所述方法还包括:
获取需要由导频信号承载的导频信息二进制比特序列;
根据所述导频信息的二进制比特序列, 确定不同的导频比特序列之间的 排列方式, 其中, 所述不同的导频比特序列之间以第一排列方式表示导频信 息中的二进制比特 "1", 所述不同的导频比特序列之间以第二排列方式表示导 频信息中的二进制比特" 0", 所述不同的导频比特序列至少包括第一导频比特 序列、 第二导频比特序列。
16、 如权利要求 15所述的方法, 其特征在于, 所述方法还包括: 通过以下方式表示导频信息中的二进制比特 "1":
以(P+Q )为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整数;
通过以下方式表示导频信息中的二进制比特" 0": 以(P+Q )为周期插入第三导频比特序列和第四导频比特序列, 用于表示 导频信息的二进制比特" 0";
所述第三导频比特序列中值为 "Γ,的比特数量和值为 "0,,的比特数量的比 例,与所述第一导频比特序列中值为 "1 "的比特数量和值为" 0"的比特数量的比 例不同; 和 /或
所述第四导频比特序列中值为 "Γ,的比特数量和值为 "0,,的比特数量的比 例,与第二导频比特序列中值为 "1 "的比特数量和值为" 0"的比特数量的比例不 同。
17、 如权利要求 15所述的方法, 其特征在于, 所述方法还包括: 通过以下方式表示所述导频信息的二进制比特 "1":
以(P+Q )为周期插入第一导频比特序列和第二导频比特序列, 以此重复 n次, n为正整数;
通过以下方式表示所述导频信息的二进制比特" 0":
以 (P,+Q,)为周期插入第三导频比特序列和第四导频比特序列, 以此重 复 n,次, P,、 Q,、 n,为正整数且 P,+Q,≠P+Q, n,≠n;
所述第三导频比特序列中值为" 0"的比特数量多于值为 "1"的比特数量;所 述第四导频比特序列中值为 "1"的比特数量多于值为 "0"的比特数量; 或
所述第三导频比特序列中值为 "1"的比特数量多于值为 "0"的比特数量;所 述第四导频比特序列中值为 "0"的比特数量多于值为 "1"的比特数量。
18、 如权利要求 11所述的方法, 其特征在于, 所述插入了导频比特序列 后的比特序列中的定帧字节所在位置, 与各个导频比特序列所在位置相错开。
19、 一种信号处理方法, 其特征在于, 包括:
从包含有第一业务信号和第一导频信号的第一信号第一信号中, 获取包 含第五导频比特序列和第一业务信号的比特序列的比特序列, 所述第五导频 比特序列为对应所述第一导频信号的比特序列;
去除所述包含第五导频比特序列和第一业务信号的比特序列的比特序列 中的第五导频比特序列, 得到所述第一业务信号的比特序列; 从所述第一信号第一信号中获取所述第一导频信号。
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