CN104040926A - Modulation mode identification method, sending device, receiving device and system - Google Patents
Modulation mode identification method, sending device, receiving device and system Download PDFInfo
- Publication number
- CN104040926A CN104040926A CN201280002741.2A CN201280002741A CN104040926A CN 104040926 A CN104040926 A CN 104040926A CN 201280002741 A CN201280002741 A CN 201280002741A CN 104040926 A CN104040926 A CN 104040926A
- Authority
- CN
- China
- Prior art keywords
- training sequence
- modulation system
- cyclic shift
- burst
- truncation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
- H04L1/0039—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver other detection of signalling, e.g. detection of TFCI explicit signalling
Abstract
Embodiments of the present invention relate to the wireless communications field and provide a modulation mode identification method, a sending device, a receiving device and a system. The method comprises: obtaining a cyclically shifted and truncated training sequence that corresponds to the modulation mode of a burst pulse to be sent; adding the cyclically shifted and truncated training sequence that is obtained to the burst pulse; and sending the burst pulse to the receiving device so that the receiving device identifies the modulation mode of the burst pulse according to the cyclically shifted and truncated training sequence contained in the burst pulse. By adding the cyclically shifted and truncated training sequence corresponding to the burst pulse to the burst pulse, the present invention enables the receiving device to directly extract the cyclically shifted and truncated training sequence from the burst pulse to identify the modulation method, simplifying a phase rotation process of the burst pulse in prior art and achieving a purpose of reducing algorithm complexity.
Description
Specification Modulation Mode Recognition method, transmission equipment, receiving device and system
Technical field
The present invention relates to wireless communication field, more particularly to a kind of Modulation Mode Recognition method, transmission equipment, receiving device and system.Background technology
In wireless communications, in order to improve systematic function, often compatible Different Modulations in same set of system, transmitting terminal sends data according to a kind of suitable modulation system of current network conditions selection.Receiving terminal is received after data, carries out respective handling to the data received, and recognize modulation system according to result.
Prior art mainly is handled to recognize modulation system by the training sequence added in the docking collection of letters number.Specifically, transmitting terminal and receiving terminal are consulted using same group of training sequence in advance.When transmitting terminal sends data, the training sequence is added into each burst to be sent, and burst is sent to receiving terminal in order.Receiving terminal is received after burst, and the burst received is practiced into sequence according to each modulation methods.Receiving terminal recognizes modulation system according to extraction training sequence acquisition corresponding with each modulation system difference and the corresponding identification parameter of each modulation system difference by comparing the size of identification parameter.
During the present invention is realized, inventor has found that prior art at least has problems with：Existing Modulation Mode Recognition method, because transmitting terminal does not do any processing to training sequence, it is therefore desirable to which receiving terminal is carried out after phase angle rotation to the burst received, then is extracted training sequence and obtained identification parameter, algorithm complex is higher, is not suitable for processing in real time.The content of the invention
In view of this, the embodiments of the invention provide a kind of Modulation Mode Recognition method, transmission equipment, receiving device and system.The technical scheme is as follows：
First aspect includes there is provided a kind of Modulation Mode Recognition method, methods described：Sequence；
Training sequence after the cyclic shift of acquisition and truncation is added into the burst；
The burst is sent to receiving device, so as to cyclic shift of the receiving device according to entrained by the burst and the modulation system of the training sequence identification burst after truncation.
In the first possible implementation of first aspect, before the training sequence obtained after the cyclic shift corresponding with the modulation system of burst to be sent and truncation, methods described also includes：
Corresponding cyclic shift digit N is distinguished according to each modulation system, default consensus sequence is subjected to cyclic shift, generation and the training sequence after the corresponding cyclic shift of each modulation system difference；
Corresponding end is distinguished according to each modulation system and truncates digit M, the training sequence with after each modulation system respectively corresponding cyclic shift is truncated, the training sequence after each modulation system is distinguished corresponding cyclic shift and truncated is generated；
Wherein, N and M value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different, and the corresponding M of different modulation systems value is identical or different.
Second aspect includes there is provided a kind of Modulation Mode Recognition method, methods described：
Receive and send the burst that equipment is sent；
Extract the training sequence after cyclic shift entrained in the burst and truncation；
According to the training sequence of extraction and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；
The modulation system of the burst is recognized according to the identification parameter.
In the first possible implementation of second aspect, it is described acquisition with before the corresponding identification parameter of each modulation system difference, methods described also includes：
Default consensus sequence is moved N according to the circulation of each modulation system, generated and the training sequence after the corresponding cyclic shift of each modulation system difference；
Wherein, N value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different.
In second of possible implementation of second aspect, the training sequence extracted after cyclic shift entrained in the burst and truncation is specifically included：
The digit K-M of the training sequence after corresponding cyclic shift and truncation is distinguished according to each modulation system, from in the burst predeterminated position extract training sequence, as with each modulation system corresponding cyclic shift of difference and truncation after training sequence；
Wherein, K is the digit of default benchmark training sequence, and M is the end truncation digit previously according to each modulation system setting, and M is less than K.
In the third possible implementation of second aspect, the modulation system that the burst is recognized according to the identification parameter, including：
Compare the order of magnitude of the identification parameter, the maximum identification parameter of selection absolute value numerical value；By the modulation system that the Modulation Mode Recognition corresponding to the maximum identification parameter of the absolute value numerical value selected is the burst；
Wherein, the identification parameter is signal to noise ratio or correlation.
The third aspect sends equipment there is provided one kind, and the equipment includes：Training sequence behind position and truncation；
Sequence add module, the burst is added into for the training sequence after the cyclic shift for obtaining the retrieval module and truncation；
Sending module, for the burst to be sent into receiving device, so as to cyclic shift of the receiving device according to entrained by the burst and the modulation system of the training sequence identification burst after truncation.
In the first possible implementation of the third aspect, the equipment also includes：
Sequence cyclic shift module, for before the training sequence after the retrieval module obtains the cyclic shift corresponding with the modulation system of burst to be sent and truncation, corresponding cyclic shift digit N is distinguished according to each modulation system, default consensus sequence is subjected to cyclic shift, generation and the training sequence after the corresponding cyclic shift of each modulation system difference；
Sequence truncation module, digit M is truncated for distinguishing corresponding end according to each modulation system, training sequence after the corresponding cyclic shift with each modulation system difference is truncated, generated and the training sequence after each modulation system corresponding cyclic shift of difference and truncation；
Wherein, N and M value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different, and the corresponding M of different modulating mode value is identical or different.
Fourth aspect sends equipment there is provided one kind, and the transmission equipment includes processor and emitter；And the training sequence after truncating；
The processor, is additionally operable to the training sequence after the cyclic shift of acquisition and truncation being added into the burst；
The emitter, for the burst to be sent into receiving device, so as to the receiving device root
The modulation system of the burst is recognized according to the cyclic shift entrained by the burst and the training sequence after truncation.
In the first possible implementation of fourth aspect, before training sequence after shifting and truncating, corresponding cyclic shift digit N is distinguished according to each modulation system, default consensus sequence is moved N according to the circulation of each modulation system, generated and the training sequence after the corresponding cyclic shift of each modulation system difference；
The processor, it is additionally operable to distinguish corresponding end truncation digit M according to each modulation system, training sequence after the corresponding cyclic shift with each modulation system difference is truncated, generated and the training sequence after each modulation system corresponding cyclic shift of difference and truncation；
Wherein, N and M value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different, and the corresponding M of different modulating mode value is identical or different.
5th aspect is there is provided a kind of receiving device, and the equipment includes：
Receiving module, the burst that equipment is sent is sent for receiving；
Extraction module, for extracting the training sequence after cyclic shift entrained in the burst that the receiving module is received and truncation；
Parameter acquisition module, for the training sequence extracted according to the extraction module and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；
Identification module, the identification parameter for being obtained according to the parameter acquisition module recognizes the modulation system of the burst.
In the first possible implementation of the 5th aspect, the receiving device also includes：
Sequence cyclic shift module, for the parameter acquisition module obtain with before the corresponding identification parameter of each modulation system difference, default consensus sequence is circulated into shifting N, generation and the training sequence after the corresponding cyclic shift of each modulation system difference respectively according to each modulation system；
Wherein, N value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different.
Second of the 5th aspect may in implementation, after training sequence digit K-M, the predeterminated position in the burst received from the receiving module carries
Take training sequence, as with each modulation system corresponding cyclic shift of difference and truncate after training sequence；
Wherein, Κ is the digit of default benchmark training sequence, and Μ is the end truncation digit previously according to each modulation system setting, and Μ is less than Κ.
In the third possible implementation of the 5th aspect, the identification module includes：
Selecting unit, the order of magnitude for comparing the identification parameter that the parameter acquisition module is obtained, the maximum identification parameter of selection absolute value numerical value；
Recognition unit, for the modulation system that the Modulation Mode Recognition corresponding to the identification parameter for the absolute value numerical value maximum for selecting the selecting unit is the burst；
Wherein, the identification parameter is signal to noise ratio or correlation.
6th aspect is there is provided a kind of receiving device, and the equipment includes：
The receiver, the burst that equipment is sent is sent for receiving；
The processor, for extracting the training sequence after cyclic shift entrained in the burst that the receiver is received and truncation；
The processor, be additionally operable to according to the training sequence of extraction and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；
The processor, is additionally operable to recognize the modulation system of the burst according to the identification parameter of the acquisition.
In the first possible implementation of the 6th aspect,
The processor, be additionally operable to obtain with before the corresponding identification parameter of each modulation system difference, default consensus sequence is circulated into shifting Ν, generation and the training sequence after the corresponding cyclic shift of each modulation system difference respectively according to each modulation system；
Wherein, Ν value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding Ν of different modulating mode value is different.
In second of possible implementation of the 6th aspect, training sequence digit Κ-Μ, predeterminated position in the burst received from the receiver extracts training sequence, as with the training sequence after each modulation system corresponding cyclic shift of difference and truncation；Wherein, Κ is the digit of default benchmark training sequence, and Μ is the end truncation digit previously according to each modulation system setting, and Μ is less than Κ.
In the third possible implementation of the 6th aspect,
The processor, is additionally operable to compare the order of magnitude of the identification parameter of acquisition, the maximum identification parameter of selection absolute value numerical value；
The processor, is additionally operable to the modulation system that the Modulation Mode Recognition corresponding to the maximum identification parameter of the absolute value numerical value that will select is the burst；
Wherein, the identification parameter is signal to noise ratio or correlation.
7th aspect includes the transmission equipment described in the receiving device described in the above-mentioned third aspect or fourth aspect and the 5th aspect or the 6th aspect there is provided a kind of Modulation Mode Recognition system, the system.
The beneficial effect of technical scheme provided in an embodiment of the present invention is：
By adding the training sequence after the cyclic shift corresponding with the burst and truncation in burst, receiving device is set directly to extract the training sequence after cyclic shift and truncation from burst to recognize modulation system, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex.Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, the accompanying drawing used required in being described below to embodiment is made cylinder and singly introduced, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the method flow diagram for the Modulation Mode Recognition method that one embodiment of the invention is provided；Fig. 2 is the method flow diagram for the Modulation Mode Recognition method that another embodiment of the present invention is provided；Fig. 3 is the method flow diagram for the Modulation Mode Recognition method that further embodiment of this invention is provided；Fig. 4 is the structure drawing of device for the transmission equipment that one embodiment of the invention is provided；
Fig. 5 is the structure drawing of device for the transmission equipment that another embodiment of the present invention is provided；
Fig. 6 is the structure drawing of device for the transmission equipment that further embodiment of this invention is provided；
Fig. 7 is the structure drawing of device for the receiving device that one embodiment of the invention is provided；
Fig. 8 is the structure drawing of device for the receiving device that another embodiment of the present invention is provided；
Fig. 9 is the structure drawing of device for the receiving device that further embodiment of this invention is provided；
Figure 10 is the system pie graph for the Modulation Mode Recognition system that one embodiment of the invention is provided.Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1 is referred to, the method flow diagram of the Modulation Mode Recognition method provided it illustrates one embodiment of the invention.The Modulation Mode Recognition method can be used in transmitting equipment, and the Modulation Mode Recognition method includes：Training sequence afterwards；
Step 102, the training sequence after the cyclic shift of acquisition and truncation is added into the burst；Step 103, the burst is sent to receiving device, so that cyclic shift of the receiving device according to entrained by burst and the training sequence after truncation recognize the modulation system of the burst.
In summary, the Modulation Mode Recognition method that the present embodiment is provided, by adding the training sequence after the cyclic shift corresponding with the burst and truncation in burst, receiving device is set directly to extract the training sequence after cyclic shift and truncation from burst to recognize modulation system, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex.In order to do more detailed description to the Modulation Mode Recognition method that a upper embodiment is provided, Fig. 2 is referred to, the method flow diagram of the Modulation Mode Recognition method provided it illustrates another embodiment of the present invention.The Modulation Mode Recognition method can apply to sending the burst that the transmission of equipment side is available for receiving device to recognize modulation system.The Modulation Mode Recognition method can include：Training sequence behind position and truncation.
Benchmark training sequence be a string as the sequence well known to transmission equipment and receiving device in wireless communication system, can be set in advance in transmission equipment and receiving device inside.In practical application, wireless communication system is generally preset with 8 groups of alternative benchmark training sequences, sends equipment and receiving device is held consultation in advance, and same group in 8 groups of alternative sequences of selection is used as benchmark training sequence.Specifically, sending equipment can stand, receiving device can be mobile terminal, and base station and mobile terminal are set up after connection, and base station can notify previously selected benchmark training sequence to mobile terminal.
Send equipment in advance to truncate the first cyclic shift of benchmark training sequence again, generate and the training sequence after each modulation system corresponding cyclic shift of difference and truncation.Such as, it is assumed that benchmark training sequence digit is K, hair carries out cyclic shift,（For different modulation systems, the digit N of loopy moving is also differed）, generate and the training sequence after the corresponding cyclic shift of each modulation system difference；According still further to previously according to each modulation system point
The end not set truncates digit M, (end M of the training after cyclic shift is clipped being truncated with the training after the corresponding cyclic shift of each modulation system difference, for different modulation systems, the digit M clipped can be with identical, can also be different）, generate and the training sequence after each modulation system corresponding cyclic shift of difference and truncation；Wherein, N and M value is to be set previously according to each modulation system, and is respectively less than the digit K of the benchmark training sequence;Also, the corresponding N of different modulating mode value is different, it is necessary to which explanation, for different modulation systems, M value can be different, can also be identical.
Specifically, send equipment and N are moved to the circulation of benchmark training sequence according to different modulating mode first, every kind of modulation system is different to the digit N of the cyclic shift of benchmark training sequence, specifically can carry out cyclic shift to benchmark training sequence according to the following equation：
circshift ( TSC, N ) = circshift ((50, 5 · · · , ) , N)
=(S Ntr_N ..., SNTR-, .., SNTR_N_L) wherein, TSC (Training Sequence Code, training sequence code）For the bad ij S of previously selected benchmark training sequence., Sl5..., SNtr_!；N is the digit of TSC loopy movings to the right.The end N of benchmark training sequence is displaced to sequence foremost；In addition, the digit N of the corresponding cyclic shift of every kind of modulation system is also different, for example, each modulation system can be preset according to following table 1 distinguishes corresponding N values：
Form 1
I.e. by the different digit N of benchmark training sequence cyclic shift, to generate and the training sequence after the corresponding cyclic shift of each modulation system difference.Specifically, the benchmark training series of a certain 26 is：
SI , S2, S3, S4…… S24, S25 , S26;
By 3 generations of the benchmark training sequence cyclic shift and the training sequence after cyclic shift corresponding QPSK (Quadrature Phase Shift Keying, QPSK)：
S24, S25, S26, SI , S2…… S21 , S22, S23;
The benchmark training sequence is circulated and moves 0 i.e. generation and the training sequence after cyclic shift corresponding 8PSK (Phase Shift Keying, phase-shift keying (PSK))：
SI , S2, S3, S4, S5,…… S24, S25, S26;
By that analogy, cyclic shift can be carried out to benchmark training sequence according to above table 1, to generate and the training sequence after the corresponding cyclic shift of each modulation system difference.
Generally, a burst can carry transmission equipment in a time slot（576.92 microsecond）It is interior
The data volume of transmission, and the total amount of data that a burst is carried by is fixed.Send the cyclic shift that equipment carries out not isotopic number to benchmark training sequence, generation with after the training sequence after the corresponding cyclic shift of each modulation system difference, further, the training sequence after cyclic shift is truncated respectively according to each modulation system, to shorten the digit of training sequence, the digit that shortening training sequence is vacated is used for carrying other data, and then improves the valid data amount that burst is carried.Under different modulating mode, the digit M of truncation can be with identical, can also be different.It is described in detail below separately below exemplified by the training sequence after cyclic shift is generated under conventional symbol rate and high power character rate and is truncated.
Character rate in existing wireless communication system can be divided into two kinds：Conventional symbol rate and high power character rate；Benchmark training sequence length under the conditions of two kinds of character rates is different.Under the conditions of conventional symbol rate, benchmark training sequence digit K is 26, i.e., benchmark training sequence under conventional symbol rate is Sl, S2, S3, S4 ... S24, S25, S26,16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation are supported under the conditions of conventional symbol rate with wireless communication system；), exemplified by tri- kinds of modulation systems of 32QAM and 64QAM, assuming that the corresponding M of above-mentioned three kinds of modulation systems is respectively 9,5 and 12, the then N values and M values in form 1, benchmark training sequence is handled, training sequence after obtaining cyclic shift and truncating, referring to following table 2:
Form 2
Wherein, the data in 16QAM row are cyclic shifts and the training sequence after clipping, be specifically according to corresponding cyclic shift digit N=2 of modulation system 16QAM in form 1, by benchmark train training sequence to
The acquisition of 9, end is clipped after lower cyclic shift；Data in 32QAM row are, according to corresponding cyclic shift digit Ν=5 of modulation system 32QAM in form 1, the acquisition of 5, end will to be clipped after the downward cyclic shift of benchmark training sequence；Data in 64QAM row are, according to corresponding cyclic shift digit N=7 of modulation system 64QAM in form 1, the acquisition of 12, end will to be clipped after the downward cyclic shift of benchmark training sequence.
Under the conditions of high power character rate, benchmark training sequence digit K is 31.Assuming that the benchmark training sequence under high power character rate is Sl, S2, S3, S4 ... S29, S30, S31, so that system supports tri- kinds of modulation systems of 8PSK, 32QAM and 64QAM under the conditions of high power character rate as an example, assuming that the corresponding M of three kinds of modulation systems is respectively 13,10 and 18, the then N values and M values in form 1, benchmark training sequence is handled, training sequence after obtaining cyclic shift and truncating, refers to following table 3:
Form 3
Wherein, data in 16QAM row are cyclic shifts and the training sequence after clipping, specifically according to corresponding cyclic shift digit N=2 of modulation system 16QAM in form 1, benchmark is trained the acquisition of 13, end is clipped after the downward cyclic shift of training sequence；Data in 32QAM row are, according to corresponding cyclic shift digit Ν=5 of modulation system 32QAM in form 1, the acquisition of 10, end will to be clipped after the downward cyclic shift of benchmark training sequence；Data in 64QAM row are, according to corresponding cyclic shift digit Ν=7 of modulation system 64QAM in form 1, the acquisition of 8, end will to be clipped after the downward cyclic shift of benchmark training sequence.
Equipment is sent before burst is sent, can be corresponding respectively with each modulation system from previously generating
Ring shift and clip after training sequence；Or, the training sequence after sending the modulation system in-time generatin cyclic shift that can also be used according to burst to be sent of equipment and truncating, in this regard, the present embodiment is not specifically limited.
Step 202, the precalculated position that the training sequence after the cyclic shift of acquisition and truncation is added into burst by equipment is sent.
The training sequence after the cyclic shift of acquisition and truncation can be added in the centre position of burst by sending equipment, can also be evenly distributed to the precalculated position in whole burst.Specifically, the precalculated position sent in equipment and receiving device agreement burst is used to add the training sequence after cyclic shift and truncation, training sequence is extracted so that receiving terminal receives the position made an appointment after burst from burst.
Step 203, send equipment and the burst added with the training sequence after cyclic shift and truncation is sent to receiving device, so that receiving device is according to the training sequence after the cyclic shift and truncation carried in the burst, the modulation system of the burst is recognized.
Specifically, receiving device is after burst is received, extract the training sequence after cyclic shift entrained in burst and truncation, and previously generated according to the training sequence and receiving device after cyclic shift and truncation with the training sequence after the corresponding cyclic shift of each modulation system difference, acquisition and the corresponding identification parameter of each modulation system difference, the modulation system of the burst is recognized finally according to the identification parameter.
In summary, the Modulation Mode Recognition method that the present embodiment is provided, by sending equipment side, added in burst to be sent according to the training sequence after the cyclic shift corresponding with the modulation system of the burst and truncation and transmission, receiving device is set directly to extract the training sequence after cyclic shift and truncation from burst to recognize modulation system, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex；Meanwhile, by truncating the length of training sequence, to reach the purpose for improving the valid data amount carried in burst.In order to the receiving device in a upper embodiment according to the training sequence after the cyclic shift and truncation carried in burst, recognize that the modulation system of the burst does more detailed description, Fig. 3 is referred to, the method flow diagram of the Modulation Mode Recognition method provided it illustrates further embodiment of this invention.Training sequence that the Modulation Mode Recognition method can apply to after the shortening carried during receiving device side is by the burst that receives recognizes the modulation system of the burst.The Modulation Mode Recognition method can include：Step 301, receiving device, which is received, sends the burst that equipment is sent, the training sequence after extracting cyclic shift from the precalculated position in the burst and truncating.
Receiving device can be extracted according to each modulation system from the precalculated position in the burst received
K-M training sequences；The training sequence of extraction be and each modulation system corresponding cyclic shift of difference and truncation after training sequence；Wherein, on the basis of K training sequence digit, M is the digit clipped of training sequence end after cyclic shift, and M value can set previously according to each modulation system, and M is less than K;It should be noted that the corresponding M of different modulating mode value can be with identical, can also be different.It should be noted that, M value can either ensure that receiving terminal detects the accuracy rate of modulation system in above-described embodiment two, also the effect of certain raising burst valid data amount can be reached, in practical application, M value refers to the M values in embodiment two and does certain adjustment, it is necessary to ensure that receiving terminal detects the accuracy rate of modulation system.
Specifically, receiving device when recognizing modulation system, it is necessary to which the training sequence after cyclic shift and truncation to extraction respectively obtains an identification parameter according to every kind of modulation system.Because the length of the training sequence after cyclic shift under each modulation system and truncation is inconsistent, therefore, receiving device is in the training sequence after extracting cyclic shift and truncating, according to the difference of modulation system, respectively from the burst received extract different length sequence, as with each modulation system corresponding cyclic shift of difference and truncation after training sequence.
For example, under the conditions of conventional symbol rate, the digit K of benchmark training sequence is 26, 16QAM is equally supported under the conditions of conventional symbol rate with system, exemplified by tri- kinds of modulation systems of 32QAM and 64QAM, it is respectively 9 due to sending truncation length M of the equipment to above-mentioned three kinds of modulation systems under the conditions of conventional symbol rate, 5 and 12, therefore, it is 17 that receiving device extracts length from the precalculated position in the burst received respectively under conventional symbol rate, 21 and 14 sequence is used as the training sequence after the cyclic shift corresponding with above-mentioned three kinds of modulation systems and truncation.
Again for example, under the conditions of high power character rate, the digit K of benchmark training sequence is 31, 8PSK is equally supported under the conditions of high power character rate with system, exemplified by tri- kinds of modulation systems of 32QAM and 64QAM, it is respectively 13 due to sending truncation length M of the equipment to above-mentioned three kinds of modulation systems under the conditions of high power character rate, 10 and 18, therefore, it is 18 that receiving device extracts length from the precalculated position in the burst received respectively under conventional symbol rate, 21 and 13 sequence is used as the training sequence after the cyclic shift corresponding with above-mentioned three kinds of modulation systems and truncation.
Step 302, receiving device according to the training sequence after cyclic shift and truncation and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference.
Default consensus sequence is moved N by receiving device according to the circulation of each modulation system, is generated and the training sequence after the corresponding cyclic shift of each modulation system difference；Wherein, N value is to be set previously according to each modulation system
It is fixed, and N is less than the digit of benchmark training sequence；The corresponding N of different modulating mode value is different.
Because benchmark training sequence is for well known to sending equipment and receiving device, therefore, receiving device equally can be according to sending equipment identical mode, previously generate and the training sequence after each modulation system respectively corresponding cyclic shift, and, receiving device to benchmark training sequence when carrying out cyclic shift, the digit N that each modulation system corresponds to cyclic shift respectively must be consistent with sending the cyclic shift digit N of each modulation system in equipment, refer to the digit of the cyclic shift under each modulation system shown in form 1, here is omitted for the present embodiment.Sequence and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, respectively obtain and the corresponding identification parameter of each modulation system difference.Wherein, identification parameter can be signal to noise ratio or correlation.
For example, under conventional symbol rate, so that system supports tri- kinds of modulation systems of 16QAM, 32QAM and 64QAM under the conditions of conventional symbol rate as an example：
When obtaining the identification parameter corresponding with 16QAM, receiving device is the training sequence after the training sequence after 17 cyclic shift and truncation and the cyclic shift corresponding with 16QAM previously generated according to the length extracted from burst, obtains the signal to noise ratio corresponding with 16QAM；
When obtaining the identification parameter corresponding with 32QAM, receiving device is the training sequence after the training sequence after 21 cyclic shift and truncation and the cyclic shift corresponding with 32QAM previously generated according to the length extracted from burst, obtains the signal to noise ratio corresponding with 32QAM；
When obtaining the identification parameter corresponding with 64QAM, receiving device is the training sequence after the training sequence after 14 cyclic shift and truncation and the cyclic shift corresponding with 64QAM previously generated according to the length extracted from burst, obtains the signal to noise ratio corresponding with 64QAM.
Wherein, the method that ^ obtains signal to noise ratio according to the training sequence after the training sequence and cyclic shift after cyclic shift and truncation is prior art, and the present embodiment is repeated no more.In addition, in addition to obtaining signal to noise ratio, receiving device can also obtain relevance values between the two according to the training sequence after the training sequence after cyclic shift and truncation and cyclic shift.
Step 303, receiving device compares the order of magnitude of identification parameter, select the specific of absolute value numerical value maximum, when the identification parameter that receiving device is obtained is signal to noise ratio, the size of the signal to noise ratio of acquisition can be compared, the modulation system that the bigger explanation of signal to noise ratio is used with the burst received is closer to therefore, receiving device can select the modulation system that the modulation system corresponding to maximum signal to noise ratio is used as the burst received.
When the identification parameter that receiving device is obtained is correlation, the size of the absolute value of the correlation of acquisition can be compared, the modulation system that the bigger explanation of the absolute value of correlation is used with the burst received closer to, therefore, receiving device can select the modulation system that the modulation system corresponding to maximum correlation value is used as the burst received.
In summary, the Modulation Mode Recognition method that the present embodiment is provided, pass through the training sequence after the cyclic shift carried in the burst received and truncation are extracted in receiving device side, and obtained and the corresponding identification parameter of each modulation system difference according to the training sequence after the training sequence after the cyclic shift and truncation extracted and the cyclic shift previously generated, the modulation system of burst is recognized finally by identification parameter size is compared, cylinder has changed the process for carrying out phase place to burst in the prior art, the purpose of reduction algorithm complex is reached.Fig. 4 is referred to, the structure drawing of device of the transmission equipment provided it illustrates one embodiment of the invention.The transmission equipment can include：Ring shift and truncate after training sequence；
Sequence add module 402, the burst is added into for the training sequence after the cyclic shift for obtaining retrieval module 401 and truncation；
Sending module 403, for burst to be sent into receiving device, so that cyclic shift of the receiving device according to entrained by burst and the training sequence after truncation recognize the modulation system of the burst.
In summary, dispensing device provided in an embodiment of the present invention, by adding the training sequence after the cyclic shift corresponding with the burst and truncation in burst, receiving device is set directly to extract the training sequence after cyclic shift and truncation from burst to recognize modulation system, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex.In order to be described in more detail to the transmission equipment that a upper embodiment is provided, Fig. 5 is referred to, the structure drawing of device of the transmission equipment provided it illustrates another embodiment of the present invention.The transmission equipment can include：Ring shift and truncate after training sequence；
Sequence add module 502, the burst is added into for the training sequence after the cyclic shift for obtaining retrieval module 501 and truncation；
Sending module 503, for burst to be sent into receiving device, so that the receiving device is according to prominent
Send out the cyclic shift entrained by pulse and the training sequence after truncation recognizes the modulation system of the burst.In addition, the transmission equipment also includes：
Sequence cyclic shift module 504, for before the training sequence after retrieval module 501 obtains the cyclic shift corresponding with the modulation system of burst to be sent and truncation, corresponding cyclic shift digit N is distinguished according to each modulation system, cyclic shift, generation and the training sequence after the corresponding cyclic shift of each modulation system difference are carried out to default consensus sequence；
Sequence truncation module 505, digit M is truncated for distinguishing corresponding end according to each modulation system, it will be truncated with the training sequence after the corresponding cyclic shift of each modulation system difference, generate the training sequence after each modulation system is distinguished corresponding cyclic shift and truncated；
Wherein, N and M value is to be set previously according to each modulation system, and the respectively less than digit of benchmark training sequence；The corresponding N of different modulating mode value is different.
In summary, the transmission equipment that the present embodiment is provided, by being added in burst to be sent according to the training sequence after the cyclic shift corresponding with the modulation system of the burst and truncation and transmission, so that receiving device can extract cyclic shift and training sequence after truncating recognizes modulation system directly from burst, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex；Meanwhile, by truncating the length of training sequence, to reach the purpose for improving the data carrying amount in burst.Fig. 6 is referred to, the structure drawing of device of the transmission equipment provided it illustrates further embodiment of this invention.The transmission equipment can include processor 601 and emitter 602;And the training sequence after truncating；
Processor 601, is additionally operable to the training sequence after the cyclic shift of acquisition and truncation being added into burst；
Emitter 602, for burst to be sent into receiving device, so as to cyclic shift of the receiving device according to entrained by burst and the modulation system of the training sequence identification burst after truncation.Before training sequence after the cyclic shift answered and truncation, corresponding cyclic shift digit N is distinguished according to each modulation system, default consensus sequence is subjected to cyclic shift, generation and the training sequence after the corresponding cyclic shift of each modulation system difference；
Processor 601, is additionally operable to distinguish corresponding end truncation digit M according to each modulation system, will
Truncated with the training sequence after the corresponding cyclic shift of each modulation system difference, generate the training sequence after each modulation system is distinguished corresponding cyclic shift and truncated；
Wherein, N and M value is to be set previously according to each modulation system, and the respectively less than digit of benchmark training sequence；The corresponding N of different modulating mode value is different.
In summary, the transmission equipment that the present embodiment is provided, by being added in burst to be sent according to the training sequence after the cyclic shift corresponding with the modulation system of the burst and truncation and transmission, so that receiving device can extract cyclic shift and training sequence after truncating recognizes modulation system directly from burst, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex；Meanwhile, by truncating the length of training sequence, to reach the purpose for improving the data carrying amount in burst.Fig. 7 is referred to, it illustrates the receiving device that one embodiment of the invention is provided, the receiving device can recognize the modulation system of the burst according to the training sequence after the cyclic shift and truncation carried in the burst received.The receiving device can include：
Receiving module 701, the burst that equipment is sent is sent for receiving；
Extraction module 702, for extracting the training sequence after cyclic shift entrained in the burst that receiving module 701 is received and truncation；
Parameter acquisition module 703, for the training sequence after the cyclic shift extracted according to extraction module 702 and truncation and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；
Identification module 704, the identification parameter for being obtained according to parameter acquisition module 703 recognizes the modulation system of the burst.
In summary, the receiving device that the present embodiment is provided, by extracting the training sequence after the cyclic shift carried in the burst received and truncation, and the modulation system distinguished corresponding identification parameter with each modulation system and recognize burst is obtained according to the training sequence after the training sequence after the cyclic shift and truncation extracted and the cyclic shift previously generated, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex.In order to be described in more detail to the receiving device that a upper embodiment is provided, Fig. 8 is referred to, the structure drawing of device of the receiving device provided it illustrates another embodiment of the present invention.The receiving device can include：Receiving module 801, the burst that equipment is sent is sent for receiving；
Extraction module 802, for extracting the training sequence after cyclic shift entrained in the burst that receiving module 801 is received and truncation；
Parameter acquisition module 803, for the training sequence after the cyclic shift extracted according to extraction module 802 and truncation and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；
Identification module 804, the identification parameter for being obtained according to parameter acquisition module 803 recognizes the modulation system of the burst.
The receiving device also includes：
Sequence cyclic shift module 805, for parameter acquisition module 803 obtain with before the corresponding identification parameter of each modulation system difference, default consensus sequence is moved N according to the circulation of each modulation system, generated and the training sequence after the corresponding cyclic shift of each modulation system difference；
Wherein, N value is to be set previously according to each modulation system, and less than the digit of benchmark training sequence；The corresponding N of different modulating mode value is different.
Extraction module 802, digit K-M specifically for distinguishing the training sequence after corresponding cyclic shift and truncation according to each modulation system, from in the burst that receiving module is received precalculated position extract training sequence, as with each modulation system corresponding cyclic shift of difference and truncation after training sequence；
Wherein, K is the digit of default benchmark training sequence, and M is the end truncation digit previously according to each modulation system setting, and M is less than K.
Parameter acquisition module 803, specifically for extracted according to extraction module 802 with each modulation system respectively corresponding cyclic shift and training sequence and sequence cyclic shift module 805 after truncating previously generate with training sequence after the corresponding cyclic shift of each modulation system difference, acquisition and the corresponding identification parameter of each modulation system difference.
In addition, identification module 804 includes：
Selecting unit 804a, the order of magnitude of the identification parameter for comparing the acquisition of parameter acquisition module 803, the maximum identification parameter of selection absolute value numerical value；
Recognition unit 804b, for the modulation system that the Modulation Mode Recognition corresponding to the identification parameter for the absolute value numerical value maximum for selecting selecting unit 804a is burst；Wherein, identification parameter is signal to noise ratio or correlation.
In summary, the receiving device that the present embodiment is provided, joined by extracting the training sequence after the cyclic shift carried in the burst received and truncation, and identification corresponding with each modulation system difference being obtained according to the training sequence after the training sequence after the cyclic shift and truncation extracted and the cyclic shift previously generated
Count and recognize the modulation system of burst, cylinder in the prior art carries out the process of phase place to burst, has reached the purpose of reduction algorithm complex.Fig. 9 is referred to, the structure drawing of device of the receiving device provided it illustrates further embodiment of this invention.The receiving device can include receiver 901 and processor 902;
Receiver 901, the burst that equipment is sent is sent for receiving；
Processor 902, for extracting the training sequence after cyclic shift entrained in the burst that receiver 901 is received and truncation；
Processor 902, be additionally operable to according to the training sequence after cyclic shift and truncation and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；
Processor 902, is additionally operable to recognize the modulation system of burst according to the identification parameter of acquisition.
Optionally, processor 902, are additionally operable to obtaining with before the corresponding identification parameter of each modulation system difference, default consensus sequence being moved into N according to the circulation of each modulation system, generated and the training sequence after the corresponding cyclic shift of each modulation system difference.
Wherein, N value is to be set previously according to each modulation system, and less than the digit of benchmark training sequence；The corresponding N of different modulating mode value is different.
Processor 902, digit K-M specifically for distinguishing the training sequence after corresponding cyclic shift and truncation according to each modulation system, from in the burst that receiver is received precalculated position extract training sequence, as with each modulation system corresponding cyclic shift of difference and truncation after training sequence.
Wherein, K is the digit of default benchmark training sequence, and M is the end truncation digit previously according to each modulation system setting, and M is less than K.Training sequence after short and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference.
Processor 902, is additionally operable to compare the order of magnitude of the identification parameter of acquisition, the maximum identification parameter of selection absolute value numerical value.
Processor 902, is additionally operable to the modulation system that the Modulation Mode Recognition corresponding to the maximum identification parameter of the absolute value numerical value that will select is burst；Wherein, identification parameter is signal to noise ratio or correlation.
In summary, the receiving device that the present embodiment is provided, by extracting the training sequence after the cyclic shift carried in the burst received and truncation, and according to the training sequence after the cyclic shift and truncation extracted
Training sequence after the cyclic shift for arranging and previously generating obtains the modulation system distinguished corresponding identification parameter with each modulation system and recognize burst, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex.Figure 10 is referred to, the system pie graph of the Modulation Mode Recognition system provided it illustrates one embodiment of the invention.The Modulation Mode Recognition system includes receiving device 60 and the transmission equipment 40 that above-described embodiment is provided.
In summary, Modulation Mode Recognition system provided in an embodiment of the present invention, by sending equipment side, added in burst to be sent according to the training sequence after the cyclic shift corresponding with the modulation system of the burst and truncation and transmission, receiving device is set directly to extract the training sequence after cyclic shift and truncation from burst to recognize modulation system, cylinder has changed the process for carrying out phase place to burst in the prior art, has reached the purpose of reduction algorithm complex；Meanwhile, by truncating the length of training sequence, to reach the purpose for improving the data carrying amount in burst.One of ordinary skill in the art will appreciate that realizing all or part of step of above-described embodiment can be completed by hardware, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable recording medium, storage medium mentioned above can be read-only storage, disk or CD etc..Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (15)
- Claims1st, a kind of Modulation Mode Recognition method, it is characterised in that methods described includes：Training sequence after the cyclic shift of acquisition and truncation is added into the burst by the training sequence after the corresponding cyclic shift of f modulation systems and truncation；The burst is sent to receiving device, the training sequence after the cyclic shift carried so as to the receiving device according to the burst and truncation recognizes the modulation system of the burst.2nd, Modulation Mode Recognition method according to claim 1, it is characterised in that before the training sequence after the acquisition cyclic shift corresponding with the modulation system of burst to be sent and truncation, methods described also includes：Corresponding cyclic shift digit N is distinguished according to each modulation system, default consensus sequence is subjected to cyclic shift, generation and the training sequence after the corresponding cyclic shift of each modulation system difference；Corresponding end is distinguished according to each modulation system and truncates digit M, the training sequence after the corresponding cyclic shift with each modulation system difference is truncated, the training sequence after each modulation system is distinguished corresponding cyclic shift and truncated is generated；Wherein, N and M value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different, and the corresponding M values of different modulating mode are identical or different.3rd, a kind of Modulation Mode Recognition method, it is characterised in that methods described includes：Receive and send the burst that equipment is sent；Extract the training sequence after the cyclic shift carried in the burst and truncation；According to the training sequence of the extraction and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；The modulation system of the burst is recognized according to the identification parameter.4th, Modulation Mode Recognition method according to claim 3, it is characterised in that the acquisition with before the corresponding identification parameter of each modulation system difference, methods described also includes：Default consensus sequence is moved N according to the circulation of each modulation system, generation divides with each modulation system Training sequence after not corresponding cyclic shift；Wherein, N value is to be set previously according to each modulation system, and the natural number of the digit less than the benchmark training sequence；The corresponding N of different modulating mode value is different.5th, Modulation Mode Recognition method according to claim 3, it is characterised in that the training sequence after cyclic shift and truncation entrained by the extraction burst, including：The digit K-M of the training sequence after corresponding cyclic shift and truncation is distinguished according to each modulation system, from in the burst precalculated position extract training sequence, as with each modulation system corresponding cyclic shift of difference and truncation after training sequence；Wherein, K is the digit of default benchmark training sequence, and M is the end truncation digit previously according to each modulation system setting, and M is less than K.6th, Modulation Mode Recognition method according to claim 3, it is characterised in that the modulation system that the burst is recognized according to the identification parameter, including：Compare the order of magnitude of the identification parameter, the maximum identification parameter of selection absolute value numerical value；By the modulation system that the Modulation Mode Recognition corresponding to the maximum identification parameter of the absolute value numerical value selected is the burst；Wherein, the identification parameter is signal to noise ratio or correlation.7th, it is a kind of to send equipment, it is characterised in that the transmission equipment includes：Training sequence behind position and truncation；Sequence add module, the burst is added into for the training sequence after the cyclic shift for obtaining the retrieval module and truncation；Sending module, for the burst to be sent into receiving device, so as to cyclic shift of the receiving device according to entrained by the burst and the modulation system of the training sequence identification burst after truncation.8th, transmission equipment according to claim 7, it is characterised in that the transmission equipment also includes：Sequence cyclic shift module is right respectively according to each modulation system for before the training sequence after the retrieval module obtains the cyclic shift corresponding with the modulation system of burst to be sent and truncation The cyclic shift digit N answered, cyclic shift, generation and the training sequence after the corresponding cyclic shift of each modulation system difference are carried out by default consensus sequence；Sequence truncation module, digit M is truncated for distinguishing corresponding end according to each modulation system, training after the corresponding cyclic shift with each modulation system difference is truncated, the training sequence after each modulation system is distinguished corresponding cyclic shift and truncated is generated；Wherein, N and M value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different.9th, it is a kind of to send equipment, it is characterised in that the transmission equipment includes processor and emitter；And the training sequence after truncating；The processor, is additionally operable to the training sequence after the cyclic shift of acquisition and truncation being added into the burst；The emitter, for the burst to be sent into receiving device, so as to cyclic shift of the receiving device according to entrained by the burst and the modulation system of the training sequence identification burst after truncation.10th, transmission equipment according to claim 9, it is characterized in that, before training sequence after shifting and truncating, corresponding cyclic shift digit N is distinguished according to each modulation system, default consensus sequence is subjected to cyclic shift, generation and the training sequence after the corresponding cyclic shift of each modulation system difference；The processor, it is additionally operable to distinguish corresponding end truncation digit M according to each modulation system, training sequence after the corresponding cyclic shift with each modulation system difference is truncated, the training sequence after each modulation system is distinguished corresponding cyclic shift and truncated is generated；Wherein, N and M value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different.11st, a kind of receiving device, it is characterised in that the receiving device includes：Receiving module, the burst that equipment is sent is sent for receiving；Extraction module, for extracting cyclic shift entrained in the burst that the receiving module is received And the training sequence after truncating；Parameter acquisition module, for the training sequence extracted according to the extraction module and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；Identification module, the identification parameter for being obtained according to the parameter acquisition module recognizes the modulation system of the burst.12nd, receiving device according to claim 11, it is characterised in that the receiving device also includes：Sequence cyclic shift module, for the parameter acquisition module obtain with before the corresponding identification parameter of each modulation system difference, default consensus sequence is moved N according to the circulation of each modulation system, generated and the training sequence after the corresponding cyclic shift of each modulation system difference；Wherein, N value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different.13rd, receiving device according to claim 11, it is characterized in that, the digit K-M of training sequence afterwards, training sequence is extracted in precalculated position in the burst received from the receiving module, as with the training sequence after each modulation system corresponding cyclic shift of difference and truncation；Wherein, K is the digit of default benchmark training sequence, and M is the end truncation digit previously according to each modulation system setting, and M is less than K.14th, receiving device according to claim 11, it is characterised in that the identification module includes：Selecting unit, the order of magnitude for comparing the identification parameter that the parameter acquisition module is obtained, the maximum identification parameter of selection absolute value numerical value；Recognition unit, for the modulation system that the Modulation Mode Recognition corresponding to the identification parameter for the absolute value numerical value maximum for selecting the selecting unit is the burst；Wherein, the identification parameter is signal to noise ratio or correlation.15th, a kind of receiving device, it is characterised in that the receiving device includes receiver and processor；The receiver, the burst that equipment is sent is sent for receiving；The processor, for extracting cyclic shift entrained in the burst that the receiver is received And the training sequence after truncating；The processor, be additionally operable to according to the training sequence of extraction and previously generate with the training sequence after the corresponding cyclic shift of each modulation system difference, obtain and the corresponding identification parameter of each modulation system difference；The processor, is additionally operable to recognize the modulation system of the burst according to the identification parameter of the acquisition.16th, receiving device according to claim 15, it is characterised in thatThe processor, is additionally operable to obtaining with before the corresponding identification parameter of each modulation system difference, default consensus sequence being moved into N according to the circulation of each modulation system, generated and the training sequence after the corresponding cyclic shift of each modulation system difference；Wherein, N value is to be set previously according to each modulation system, and less than the digit of the benchmark training sequence；The corresponding N of different modulating mode value is different.17th, receiving device according to claim 15, it is characterized in that, training sequence digit K-M, training sequence is extracted in precalculated position in the burst received from the receiver, as with the training sequence after each modulation system corresponding cyclic shift of difference and truncation；Wherein, K is the digit of default benchmark training sequence, and M is the end truncation digit previously according to each modulation system setting, and M is less than K.18th, receiving device according to claim 15, it is characterised in thatThe processor, is additionally operable to compare the order of magnitude of the identification parameter of acquisition, the maximum identification parameter of selection absolute value numerical value；The processor, is additionally operable to the modulation system that the Modulation Mode Recognition corresponding to the maximum identification parameter of the absolute value numerical value that will select is the burst；Wherein, the identification parameter is signal to noise ratio or correlation.19th, a kind of Modulation Mode Recognition system, it is characterised in that the system includes：Transmission equipment as described in claim 7 to 10 is any and the receiving device as described in claim 11 to 18 is any.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/084840 WO2014075316A1 (en) | 2012-11-19 | 2012-11-19 | Modulation mode identification method, sending device, receiving device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104040926A true CN104040926A (en) | 2014-09-10 |
Family
ID=50730529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280002741.2A Pending CN104040926A (en) | 2012-11-19 | 2012-11-19 | Modulation mode identification method, sending device, receiving device and system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104040926A (en) |
| WO (1) | WO2014075316A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763496A (en) * | 2014-12-19 | 2016-07-13 | 联芯科技有限公司 | Detection method and apparatus of adjacent cell modulation mode |
| CN108512584A (en) * | 2018-04-03 | 2018-09-07 | 电子科技大学 | A kind of joint method of reseptance in the modulation of direction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206521A (en) * | 1996-11-13 | 1999-01-27 | 诺基亚电信股份公司 | Method, transmitter and receiver for transmitting training signals in TDMA transmission system |
| WO2001052493A1 (en) * | 1999-12-30 | 2001-07-19 | Nokia Corporation | Method for blind modulation detection |
| CN1391752A (en) * | 1999-11-19 | 2003-01-15 | 艾利森电话股份有限公司 | Method and system for blind detection of modulation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1142687C (en) * | 2000-10-26 | 2004-03-17 | 华为技术有限公司 | Method and device for channel estimation with training sequence |
| CN1148017C (en) * | 2000-10-26 | 2004-04-28 | 华为技术有限公司 | Method and equipment for fast channel estimation with training sequence |
-
2012
- 2012-11-19 WO PCT/CN2012/084840 patent/WO2014075316A1/en active Application Filing
- 2012-11-19 CN CN201280002741.2A patent/CN104040926A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206521A (en) * | 1996-11-13 | 1999-01-27 | 诺基亚电信股份公司 | Method, transmitter and receiver for transmitting training signals in TDMA transmission system |
| CN1391752A (en) * | 1999-11-19 | 2003-01-15 | 艾利森电话股份有限公司 | Method and system for blind detection of modulation |
| WO2001052493A1 (en) * | 1999-12-30 | 2001-07-19 | Nokia Corporation | Method for blind modulation detection |
Non-Patent Citations (1)
| Title |
|---|
| 张水英,: ""自适应调制帧格式的设计与实现"", 《中国优秀博硕士学位论文全文数据库-信息科技辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763496A (en) * | 2014-12-19 | 2016-07-13 | 联芯科技有限公司 | Detection method and apparatus of adjacent cell modulation mode |
| CN108512584A (en) * | 2018-04-03 | 2018-09-07 | 电子科技大学 | A kind of joint method of reseptance in the modulation of direction |
| CN108512584B (en) * | 2018-04-03 | 2020-11-13 | 电子科技大学 | Joint receiving method in direction modulation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014075316A1 (en) | 2014-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107251504A (en) | The system and method being grouped using STF automatic detections WLAN | |
| CN104272691B (en) | Support the signaling and relevant device and method of advanced wireless receiver | |
| CN106063151B (en) | A kind of up-link access method, apparatus and system | |
| KR20140005249A (en) | Methods and systems for communicating | |
| CN105122756B (en) | Method and apparatus for sending/receiving signal in a wireless communication system | |
| JP6609249B2 (en) | TRANSMITTER AND RECEIVER USING A TURNARY SEQUENCE AND TRANSMITTER OPERATING METHOD | |
| CN104022810B (en) | A kind of transmitting terminal antenna selecting method based on SM systems | |
| CN105610480A (en) | Method and device for data transmission | |
| CN104065605A (en) | Communication method and communication device on new carrier-type carrier | |
| CN113206695A (en) | Index vector modulation method and device based on constellation diagram and antenna combination | |
| CN106534029A (en) | Phase compensation and demapping method for OFDM receiver | |
| CN106953709A (en) | A kind of descending nonopiate multi-access method of multiaerial system based on spatial modulation | |
| CN103095629A (en) | Method, device and system for transmitting and receiving data | |
| CN102055558A (en) | Method and device for segment decoding of transport block (TB) as well as multiple input multiple output (MIMO) receiver | |
| CN104040926A (en) | Modulation mode identification method, sending device, receiving device and system | |
| US9722753B2 (en) | Method and apparatus for transmitting/receiving response signal in wireless communication system | |
| CN104868982B (en) | Base band Main Processor Unit, digital front-end, Base Band Unit and data transmission method | |
| CN103384182A (en) | Method, system and device for carrying out uplink transmission | |
| CN103812610B (en) | A kind of data communications method, terminal and information safety devices | |
| CN104994052A (en) | Sending data modulation method used for SIM-OFDM system | |
| CN101841410B (en) | Sampling point signal selection method and receiving end | |
| CN106576086A (en) | Channel estimation method and apparatus | |
| CN101895511A (en) | High-order quadrature amplitude modulation signal frequency deviation estimation method and device | |
| CN101677252B (en) | Method and device for acquiring downlink burst data | |
| CN103379076A (en) | Method, system and equipment for uplink transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140910 |
|
| WD01 | Invention patent application deemed withdrawn after publication |