CN103117838A - Method and system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation - Google Patents
Method and system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation Download PDFInfo
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Abstract
The invention discloses a method and a system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation. The method includes: receiving data information, performing Trellis encoding, differential precoding, continuous-phase encoding, phase shaping filtering and phase modulating to obtain TCM-4CPM baseband signals for transmission; and subjecting the received TCM-4CPM baseband signals to digital phase discrimination, timing synchronization, differential sign demodulation and soft-decision decoding to obtain the data information. Efficient and reliable information transmission in channels with limited power and band is achieved, and simplification of TCM-4CPM technology is also achieved.
Description
Technical field
The present invention relates to the wireless communication technology that a kind of coding combines with modulation, be particularly related to a kind of TCM-4CPM(Trellis Coded Modulation-4Continuous Phase Modulation of high-performance low complex degree, Trellis-coded modulation is in conjunction with the technology of quaternary Continuous Phase Modulation) method for designing and system.
Background technology
Now, in digital communicating field, for ensureing the validity and reliability of transmission information, the principal element that people consider is band efficiency and power utilization, but, ensure that band efficiency and the power utilization of transmission information is difficult to accomplish both to take into account in actual applications.
For example, normal by adopting error correction coding to increase the controlled redundancy of information in power constrained channel, obtain error correcting capability to increase transmission bandwidth, thereby exchange the raising of power utilization with the reduction of band system band utilance for; In the frequency band limited channel, by adopting M ary modulation, realize the minimizing of transmission bandwidth to reduce system's anti-noise ability, thereby exchange the raising of band efficiency with the reduction of system power utilance for.
Yet, flourish along with radio communication, large bandwidth, long-distance transmissions will become a kind of development trend, and corresponding transmission channel will be no longer traditional power constrained channel or Bandwidth-Constrained channel, but power and frequency band limited channel all.Must integrate as error correction coding by the increasing modulation signal for this reason required redundancy is provided, to avoid band efficiency to reduce because adding error correction coding, if but coding and decoding and modulation /demodulation are separate design, and the demodulation before decoding is hard decision, so inevitably will lose a part of useful information, be difficult to obtain performance preferably.
TCM-4CPM(Trellis Coded Modulation-4Continuous Phase Modulation, Trellis-coded modulation is in conjunction with the technology of quaternary Continuous Phase Modulation) as a kind of coding and modulation combined technology, be highly suitable for power and frequency band all in limited channel.
Wherein, TCM(Trellis Coded Modulation, Trellis-coded modulation) be a kind ofly to realize the increase of the free Euclidean distance of output code sequence by the collection partitioning scheme, thereby improve the technology of signal power utilance, especially, it is the key of TCM scheme structure that collection is cut apart, and so-called collection is cut apart, exactly signal diversifying is divided into and comprises the signal identical relatively small subset of counting, and make and cut apart that in the subset that obtains, the distance of the minimum space between signaling point is increased to greatest extent;
4CPM(4Continuous Phase Modulation, quaternary Continuous Phase Modulation) be a kind of four kinds of phase place variation tendencies that have in a phase place molding cycle, according to corresponding phase place variation tendency, can rule out the technology of transmitting terminal transmission information, each symbol of 4CPM carries 2bit information, have the characteristics such as phase place is continuous, the main lobe power spectral density is concentrated, and secondary lobe is low.
Traditional TCM-4CPM system is very complicated, and especially receiving terminal demodulation coding technical difficulty is very high, causes the system cost high, and power consumption is high, has seriously restricted popularization and the application of TCM-4CPM.
Therefore, how to realize the simplification of TCM-4CPM system, and guarantee power and frequency band all in limited channel effectively, transmission information reliably, become current people's problem demanding prompt solution.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of TCM-4CPM method for designing and system of high-performance low complex degree, solved power and frequency band all in limited channel effectively, transmission information problem reliably.
For solving the problems of the technologies described above, the invention provides a kind of TCM-4CPM method for designing of high-performance low complex degree, it is characterized in that, comprising:
Receiving data information carries out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtains the TCM-4CPM baseband signal and launches;
The described TCM-4CPM baseband signal that receives is carried out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding.
Further, wherein, receiving data information carries out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtains the TCM-4CPM baseband signal and launches, and is further:
Receive described data message and carry out the grid coding processing;
The data message that obtains after described grid coding is carried out the difference precoding processing;
The data message that obtains after described difference precoding is carried out the continuous phase coding to be processed;
The data message that obtains after described continuous phase coding is carried out the phase place molding filtration to be processed;
The data message that obtains after described phase place molding filtration is carried out drawing the TCM-4CPM baseband signal after phase-modulation is processed to be launched.
Further, wherein, described grid coding is processed and is carried out according to maximum Euclidean distance coding structure.
Further, wherein, the data message that obtains after described phase place molding filtration is carried out drawing the TCM-4CPM baseband signal after phase-modulation is processed to be launched, be further: the data message that obtains after described phase place molding filtration is carried out after phase-modulation processes, then carry out baseband quadrature and draw the TCM-4CPM baseband signal and adopt the intermediate frequency transmission system to launch.
Further, wherein, the described TCM-4CPM baseband signal that receives is carried out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding, is further:
The described TCM-4CPM baseband signal that receives is carried out digital phase detection to be processed;
The baseband signal that obtains after described digital phase monitoring is carried out Timing Synchronization to be processed;
The baseband signal that obtains after described Timing Synchronization is extracted the phase point of maximum probability, and will be obtained the PHASE DISTRIBUTION probabilistic information and carry out signature minute demodulation process;
The signal that obtains after described symbol differential ference spiral is carried out Soft decision decoding process, draw described data message.
Further, wherein, described Soft decision decoding is treated to and carries out phase distance from soft-decision metrics and Viterbi decoding processing.
For solving the problems of the technologies described above, the present invention also provides a kind of TCM-4CPM design system of high-performance low complex degree, it is characterized in that, comprising: transmitter module and receiver module; Wherein,
Described transmitter module couples mutually with described receiver module, is used for receiving data information is carried out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtains the TCM-4CPM baseband signal and is transmitted to described receiver module;
Described receiver module couples mutually with described transmitter module, is used for the described TCM-4CPM baseband signal that receives is carried out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding.
Further, wherein, described transmitter module comprises: grid coding unit, difference precoding unit, continuous phase coding unit, phase place molding filtration unit and phase modulation unit; Wherein,
Described grid coding unit couples mutually with described difference precoding unit, is used for receiving described data message and carries out sending to described difference precoding unit after grid coding is processed;
Wherein carrying out the grid coding processing carries out according to maximum Euclidean distance coding structure.
Described difference precoding unit couples mutually with described grid coding unit and continuous phase coding unit, is used for the data message that obtains behind described grid coding unit is carried out sending to described continuous phase coding unit after the difference precoding processing;
Described continuous phase coding unit couples mutually with described difference precoding unit and phase place molding filtration unit, is used for the data message that described difference precoding unit obtains is carried out sending to after the continuous phase coding is processed described phase place molding filtration unit;
Described phase place molding filtration unit couples mutually with described continuous phase coding unit and phase modulation unit, is used for the data message that described continuous phase coding unit obtains is carried out sending to described phase modulation unit after the phase place molding filtration is processed;
Described phase modulation unit couples mutually with described phase place molding filtration unit and receiver module, is used for that the data message that described phase place molding filtration unit obtains is carried out drawing the TCM-4CPM baseband signal after phase-modulation is processed and is transmitted to described receiver module.
Further, wherein, described grid coding is processed and is carried out according to maximum Euclidean distance coding structure.
Further, wherein, described phase modulation unit further also is used for: the data message that described phase place molding filtration unit is obtained carries out after phase-modulation processes, then carries out baseband quadrature and draw the TCM-4CPM baseband signal and adopt the intermediate frequency transmission system to be transmitted to described receiver module.
Further, wherein, described receiver module comprises: digital phase detection unit, Timing Synchronization unit, symbol differential ference spiral unit and Soft decision decoding unit; Wherein,
Described digital phase detection unit couples mutually with described transmitter module and Timing Synchronization unit, is used for the described TCM-4CPM baseband signal that receives is carried out sending to after digital phase detection is processed described Timing Synchronization unit;
Described Timing Synchronization unit decomposes phase modulation with described digital phase detection unit and signature and couples, and is used for the baseband signal that described digital phase detection unit obtains is carried out sending to described symbol differential ference spiral after Timing Synchronization is processed;
Described symbol differential ference spiral unit, couple mutually with described Timing Synchronization unit and Soft decision decoding unit, be used for the baseband signal that described Timing Synchronization unit obtains is extracted the phase point of maximum probability, and will obtain the PHASE DISTRIBUTION probabilistic information and carry out sending to described Soft decision decoding after signature minute demodulation process;
Described Soft decision decoding unit couples mutually with described symbol differential ference spiral unit, is used for that the signal that described symbol differential ference spiral obtains is carried out Soft decision decoding and processes, and draws described data message.
Further, wherein, described Soft decision decoding is treated to and carries out phase distance from soft-decision metrics and Viterbi decoding processing.
Compared with prior art, TCM-4CPM method for designing and the system of a kind of high-performance low complex degree of the present invention, realized following technique effect:
1, TCM-4CPM method for designing and the system of a kind of high-performance low complex degree of the present invention, realized power and frequency band all in limited channel effectively, transmission information reliably, also realized simultaneously the simplification of TCM-4CPM technology.Existing higher band efficiency has again higher power utilization, has guaranteed the validity and reliability of transmission information.
2, TCM-4CPM method for designing and the system of a kind of high-performance low complex degree of the present invention, be based on the theory that in conventional art, TCM is combined with 4CPM, by carrying out the difference preliminary treatment, the ingenious TCM technology of utilizing is to the modulation rule of 4CPM signal phase, the corresponding non-coherent demodulation that adopts has been simplified the design of traditional TCM-4CPM largely in conjunction with phase place soft-decision mode, particularly simplifies the structure, and it is few to consume the processing resource, is fit to burst communication.
Description of drawings
Fig. 1 is the TCM-4CPM method for designing flow chart of the described a kind of high-performance low complex degree of the embodiment of the present invention one;
Fig. 2 is the particular flow sheet of step 101 in the described method of Fig. 1 embodiment one;
Fig. 3 is the particular flow sheet of step 102 in the described method of Fig. 1 embodiment one;
Fig. 4 is the TCM-4CPM system architecture diagram of the described a kind of high-performance low complex degree of the embodiment of the present invention two;
Fig. 5 is the concrete structure block diagram of transmitter module 401 in Fig. 4 embodiment two described system;
Fig. 6 is the concrete structure block diagram of receiver module 402 in Fig. 4 embodiment two described system;
Fig. 7 is the particular circuit configurations figure of the transmitter module of system according to embodiment making;
Fig. 8 is the particular circuit configurations figure of the receiver module of system according to embodiment making.
Embodiment
Censure specific components as used some vocabulary in the middle of specification and claim.Those skilled in the art should understand, and hardware manufacturer may be called same assembly with different nouns.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the criterion that the difference on function is used as distinguishing with assembly.Be an open language as " comprising " mentioned in the middle of specification and claim in the whole text, therefore should be construed to " comprise but be not limited to "." roughly " refer in acceptable error range, those skilled in the art can solve the technical problem in the certain error scope, substantially reach described technique effect.In addition, " couple " word and comprise any means that indirectly are electrically connected that directly reach at this.Therefore, be coupled to one second device if describe a first device in literary composition, represent that described first device can directly be electrically connected at described the second device, or indirectly be electrically connected to described the second device by other devices or connection means.The specification subsequent descriptions is for implementing better embodiment of the present invention, and right described description is to illustrate that rule of the present invention is purpose, is not to limit scope of the present invention.Protection scope of the present invention is as the criterion when looking the claims person of defining.
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as a limitation of the invention.
As shown in Figure 1, the TCM-4CPM method for designing for the described high-performance low complex degree of the embodiment of the present invention one comprises the following steps:
Step 101, receiving data information are carried out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtain the TCM-4CPM baseband signal and launch;
Step 102 carries out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding to the described TCM-4CPM baseband signal that receives.
Data message described here is binary data stream in following embodiment, and described TCM-4CPM baseband signal is I, Q two-way baseband signal, certainly is not limited to this here.
Particularly, as shown in Figure 2, step 101 comprises:
Wherein carrying out the grid coding processing carries out according to maximum Euclidean distance coding structure;
Wherein, further comprise in step 1015: the data message that obtains after described phase place molding filtration is carried out after phase-modulation processes, then carry out baseband quadrature and draw the TCM-4CPM baseband signal and adopt the intermediate frequency transmission system to launch.
Particularly, as shown in Figure 3, step 102 comprises:
Wherein, further comprise in step 1021: the described TCM-4CPM baseband signal that receives is carried out the laggard line number word of non-coherent demodulation phase demodulation process;
Wherein the Soft decision decoding described in step 1024 is treated to and carries out phase distance from soft-decision metrics and Viterbi decoding processing.
Here why adopt Soft decision decoding to process, rather than according to mode of the prior art, namely the data soft-decision is processed, and purpose is exactly in order to access active data information through after decoding, realized receiving the simplification of structure, and can guarantee the validity and reliability of base-band information.
As shown in Figure 4, be the TCM-4CPM design system of the described high-performance low complex degree of the embodiment of the present invention two, this system comprises: transmitter module 401 and receiver module 402; Wherein,
Described transmitter module 401, couple mutually with described receiver module 402, be used for receiving data information is carried out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtain the TCM-4CPM baseband signal and be transmitted to described receiver module 402;
Described receiver module 402 couples mutually with described transmitter module 401, is used for the described TCM-4CPM baseband signal that receives is carried out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding.
Data message described here is binary data stream in following embodiment, and described TCM-4CPM baseband signal is I, Q two-way baseband signal, certainly is not limited to this here.
Particularly, as shown in Figure 5, described transmitter module 401 comprises: grid coding unit 4011, difference precoding unit 4012, continuous phase coding unit 4013, phase place molding filtration unit 4014 and phase modulation unit 4015; Wherein,
Described grid coding unit 4011 couples mutually with described difference precoding unit 4012, is used for receiving described data message and carries out sending to described difference precoding unit 4012 after grid coding (TCM coding) is processed;
Wherein carrying out the grid coding processing carries out according to maximum Euclidean distance coding structure.
Described difference precoding unit 4012, couple mutually with described grid coding unit 4011 and continuous phase coding unit 4013, be used for the data message that obtains behind described grid coding unit 4011 is carried out sending to described continuous phase coding unit 4013 after the difference precoding processing;
Described continuous phase coding unit 4013, couple mutually with described difference precoding unit 4012 and phase place molding filtration unit 4014, be used for the data message that described difference precoding unit 4012 obtains is carried out sending to after the continuous phase coding is processed described phase place molding filtration unit 4014;
Described phase place molding filtration unit 4014, couple mutually with described continuous phase coding unit 4013 and phase modulation unit 4015, be used for the data message that described continuous phase coding unit 4013 obtains is carried out sending to described phase modulation unit 4015 after the phase place molding filtration is processed;
Described phase modulation unit 4015, couple mutually with described phase place molding filtration unit 4014 and receiver module 402, be used for that the data message that described phase place molding filtration unit 4014 obtains is carried out drawing the TCM-4CPM baseband signal after phase-modulation is processed and be transmitted to described receiver module 402.
Wherein, described phase modulation unit 4015 further also is used for: the data message that described phase place molding filtration unit 4014 is obtained carries out after phase-modulation processes, then carries out baseband quadrature and draw the TCM-4CPM baseband signal and adopt the intermediate frequency transmission system to be transmitted to described receiver module 402.
To those skilled in the art, except carrying out according to foregoing the assembling of transmitter module, can also assemble by particular circuit configurations figure described according to Fig. 7 here.
Particularly, as shown in Figure 6, described receiver module 402 comprises: digital phase detection unit 4021, Timing Synchronization unit 4022, symbol differential ference spiral unit 4023 and Soft decision decoding unit 4024; Wherein,
Described digital phase detection unit 4021 couples mutually with described transmitter module 401 and Timing Synchronization unit 4022, is used for the described TCM-4CPM baseband signal that receives is carried out sending to after digital phase detection is processed described Timing Synchronization unit 4022;
Wherein, described digital phase detection unit 4021 further also is used for: the described TCM-4CPM baseband signal that receives is carried out the laggard line number word of non-coherent demodulation phase demodulation process.
Described Timing Synchronization unit 4022 couples mutually with described digital phase detection unit 4021 and symbol differential ference spiral 4023, is used for the baseband signal that described digital phase detection unit 4021 obtains is carried out sending to described symbol differential ference spiral 4023 after Timing Synchronization is processed;
Described symbol differential ference spiral unit 4023, couple mutually with described Timing Synchronization unit 4022 and Soft decision decoding unit 4024, be used for the baseband signal that described Timing Synchronization unit 4022 obtains is extracted the phase point of maximum probability, and will obtain the PHASE DISTRIBUTION probabilistic information and carry out sending to described Soft decision decoding 4024 after signature minute demodulation process;
Described Soft decision decoding unit 4024 couples mutually with described symbol differential ference spiral unit 4023, is used for that the signal that described symbol differential ference spiral 4023 obtains is carried out Soft decision decoding and processes, and draws described data message.
Wherein, described Soft decision decoding is treated to and carries out phase distance from soft-decision metrics and Viterbi decoding processing.
Here why adopt Soft decision decoding to process, rather than according to mode of the prior art, namely the data soft-decision is processed, and purpose is exactly in order to access active data information through after decoding, realized receiving the simplification of structure, and can guarantee the validity and reliability of base-band information.
To those skilled in the art, except carrying out according to foregoing the assembling of receiver module, can also assemble by particular circuit configurations figure described according to Fig. 8 here.
Compared with prior art, TCM-4CPM method for designing and the system of a kind of high-performance low complex degree of the present invention, realized following technique effect:
1, TCM-4CPM method for designing and the system of a kind of high-performance low complex degree of the present invention, realized power and frequency band all in limited channel effectively, transmission information reliably, also realized simultaneously the simplification of TCM-4CPM technology.Existing higher band efficiency has again higher power utilization, has guaranteed the validity and reliability of transmission information.
2, TCM-4CPM method for designing and the system of a kind of high-performance low complex degree of the present invention, be based on the theory that in conventional art, TCM is combined with 4CPM, by carrying out the difference preliminary treatment, the ingenious TCM technology of utilizing is to the modulation rule of 4CPM signal phase, the corresponding non-coherent demodulation that adopts has been simplified the design of traditional TCM-4CPM largely in conjunction with phase place soft-decision mode, particularly simplifies the structure, and it is few to consume the processing resource, is fit to burst communication.
Although below invention has been described in conjunction with the preferred embodiments, but it should be appreciated by those skilled in the art, method and system of the present invention is not limited to the embodiment described in embodiment, in the situation that do not deviate from the spirit and scope of the invention that is limited by appended claims, can make various modifications, increase and replace the present invention.
Claims (12)
1. the TCM-4CPM method for designing of a high-performance low complex degree, is characterized in that, comprising:
Receiving data information carries out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtains the TCM-4CPM baseband signal and launches;
The described TCM-4CPM baseband signal that receives is carried out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding.
2. the TCM-4CPM method for designing of high-performance low complex degree as claimed in claim 1, it is characterized in that, receiving data information carries out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtains the TCM-4CPM baseband signal and launches, and is further:
Receive described data message and carry out the grid coding processing;
The data message that obtains after described grid coding is carried out the difference precoding processing;
The data message that obtains after described difference precoding is carried out the continuous phase coding to be processed;
The data message that obtains after described continuous phase coding is carried out the phase place molding filtration to be processed;
The data message that obtains after described phase place molding filtration is carried out drawing the TCM-4CPM baseband signal after phase-modulation is processed to be launched.
3. the TCM-4CPM method for designing of high-performance low complex degree as claimed in claim 2, is characterized in that, described grid coding is processed and carried out according to maximum Euclidean distance coding structure.
4. the TCM-4CPM method for designing of high-performance low complex degree as claimed in claim 2, it is characterized in that, the data message that obtains after described phase place molding filtration is carried out drawing the TCM-4CPM baseband signal after phase-modulation is processed to be launched, be further: the data message that obtains after described phase place molding filtration is carried out after phase-modulation processes, then carry out baseband quadrature and draw the TCM-4CPM baseband signal and adopt the intermediate frequency transmission system to launch.
5. the TCM-4CPM method for designing of high-performance low complex degree as claimed in claim 1, it is characterized in that, the described TCM-4CPM baseband signal that receives is carried out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding, is further:
The described TCM-4CPM baseband signal that receives is carried out digital phase detection to be processed;
The baseband signal that obtains after described digital phase monitoring is carried out Timing Synchronization to be processed;
The baseband signal that obtains after described Timing Synchronization is extracted the phase point of maximum probability, and will be obtained the PHASE DISTRIBUTION probabilistic information and carry out signature minute demodulation process;
The signal that obtains after described symbol differential ference spiral is carried out Soft decision decoding process, draw described data message.
6. the TCM-4CPM method for designing of high-performance low complex degree as claimed in claim 5, is characterized in that, described Soft decision decoding is treated to and carries out phase distance from soft-decision metrics and Viterbi decoding processing.
7. the TCM-4CPM design system of a high-performance low complex degree, is characterized in that, comprising: transmitter module and receiver module; Wherein,
Described transmitter module couples mutually with described receiver module, is used for receiving data information is carried out grid coding, difference precoding, continuous phase coding, phase place molding filtration and phase-modulation, obtains the TCM-4CPM baseband signal and is transmitted to described receiver module;
Described receiver module couples mutually with described transmitter module, is used for the described TCM-4CPM baseband signal that receives is carried out drawing described data message after digital phase detection, Timing Synchronization, the processing of signature decomposition mediation Soft decision decoding.
8. the TCM-4CPM design system of high-performance low complex degree as claimed in claim 7, it is characterized in that, described transmitter module comprises: grid coding unit, difference precoding unit, continuous phase coding unit, phase place molding filtration unit and phase modulation unit; Wherein,
Described grid coding unit couples mutually with described difference precoding unit, is used for receiving described data message and carries out sending to described difference precoding unit after grid coding is processed;
Wherein carrying out the grid coding processing carries out according to maximum Euclidean distance coding structure;
Described difference precoding unit couples mutually with described grid coding unit and continuous phase coding unit, is used for the data message that obtains behind described grid coding unit is carried out sending to described continuous phase coding unit after the difference precoding processing;
Described continuous phase coding unit couples mutually with described difference precoding unit and phase place molding filtration unit, is used for the data message that described difference precoding unit obtains is carried out sending to after the continuous phase coding is processed described phase place molding filtration unit;
Described phase place molding filtration unit couples mutually with described continuous phase coding unit and phase modulation unit, is used for the data message that described continuous phase coding unit obtains is carried out sending to described phase modulation unit after the phase place molding filtration is processed;
Described phase modulation unit couples mutually with described phase place molding filtration unit and receiver module, is used for that the data message that described phase place molding filtration unit obtains is carried out drawing the TCM-4CPM baseband signal after phase-modulation is processed and is transmitted to described receiver module.
9. the TCM-4CPM design system of high-performance low complex degree as claimed in claim 8, is characterized in that, described grid coding is processed and carried out according to maximum Euclidean distance coding structure.
10. the TCM-4CPM design system of high-performance low complex degree as claimed in claim 8, it is characterized in that, described phase modulation unit, further also be used for: the data message that described phase place molding filtration unit is obtained carries out after phase-modulation processes, then carries out baseband quadrature and draw the TCM-4CPM baseband signal and adopt the intermediate frequency transmission system to be transmitted to described receiver module.
11. the TCM-4CPM design system of high-performance low complex degree as claimed in claim 7 is characterized in that, described receiver module comprises: digital phase detection unit, Timing Synchronization unit, symbol differential ference spiral unit and Soft decision decoding unit; Wherein,
Described digital phase detection unit couples mutually with described transmitter module and Timing Synchronization unit, is used for the described TCM-4CPM baseband signal that receives is carried out sending to after digital phase detection is processed described Timing Synchronization unit;
Described Timing Synchronization unit decomposes phase modulation with described digital phase detection unit and signature and couples, and is used for the baseband signal that described digital phase detection unit obtains is carried out sending to described symbol differential ference spiral after Timing Synchronization is processed;
Described symbol differential ference spiral unit, couple mutually with described Timing Synchronization unit and Soft decision decoding unit, be used for the baseband signal that described Timing Synchronization unit obtains is extracted the phase point of maximum probability, and will obtain the PHASE DISTRIBUTION probabilistic information and carry out sending to described Soft decision decoding after signature minute demodulation process;
Described Soft decision decoding unit couples mutually with described symbol differential ference spiral unit, is used for that the signal that described symbol differential ference spiral obtains is carried out Soft decision decoding and processes, and draws described data message.
12. the TCM-4CPM design system of high-performance low complex degree as claimed in claim 11 is characterized in that, described Soft decision decoding is treated to and carries out phase distance from soft-decision metrics and Viterbi decoding processing.
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| CN105429729A (en) * | 2015-11-03 | 2016-03-23 | 西安烽火电子科技有限责任公司 | Ultrashort wave CPTCM (Continuous Phase Trellis Coded Modulation) coherent demodulation method |
| CN105429729B (en) * | 2015-11-03 | 2018-11-09 | 西安烽火电子科技有限责任公司 | A kind of ultrashort continuous phase Trellis-coded modulation coherent demodulation method |
| CN111585935A (en) * | 2020-04-29 | 2020-08-25 | 中国电子科技集团公司第五十四研究所 | Integral demodulation method for continuous non-uniform multi-carrier signal |
| CN111585935B (en) * | 2020-04-29 | 2022-03-22 | 中国电子科技集团公司第五十四研究所 | Integral demodulation method for continuous non-uniform multi-carrier signal |
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| CN103117838B (en) | 2016-05-04 |
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