CN116405054A - Multi-mode waveform self-adaption method - Google Patents
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Abstract
The application discloses a multimode waveform self-adaption method which comprises the following steps: a transmission waveform frame structure is predefined, the transmission waveform frame structure comprises a synchronization section, a data section and a transmission protection section which are sequentially arranged, wherein the frequency hopping frequencies of the synchronization sections of different waveform modes are aligned at the tail of the synchronization section, and the synchronous pulse frequencies of the aligned parts are the same; the synchronous codes of different waveform modes are aligned at the tail of the synchronous section, and the mother codes of the synchronous codes of the aligned parts of the waveform modes are the same; broadband reception is performed based on the transmission waveform frame, and the following process is performed to perform waveform pattern recognition: buffering the pulse signals with the maximum synchronous pulse number, and aligning; performing correlation operation on the mother code of the synchronous code with the largest local synchronous pulse number, and determining N correlation values; and comparing the determined N correlation values with a preset waveform mode. According to the embodiment of the application, the waveform mode type is adaptively identified by utilizing the synchronous segment pulse configuration, so that the accuracy of mode identification is improved, and the signal overhead and the receiving complexity are reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a multimode waveform adaptive method.
Background
In a frequency hopping system, in order to meet different application scenarios (different traffic volumes, different anti-interference capabilities and different communication distances), a transmission waveform can relate to multiple modes. Different modes have different transmission rates and different package types. In a communication system, a transmitting end can adaptively select a mode to transmit according to different service scenes. The receiving end cannot know the mode of the transmitting end in advance, so the receiving end needs to have the capability of adaptively identifying the multi-mode waveform.
Link16 is the U.S. Command control data chain, which is a frequency hopping system. According to different application scenes, 4 package types are respectively STDP, P2SP, P2DP and P4SP. The Link16 transmission waveform design structure includes a synchronization section, a header section, a data section, and a propagation protection section. These 4 types of adaptive transmission and reception are achieved by adding a flag bit in the header section. And the sender transmits the corresponding type of mark in the header section. The receiving end analyzes the received header section signals and self-adaptively identifies the 4 types through the zone bit. TTNT is a weapon cooperative data link in the united states and is also a frequency hopping system. In TTNT transmission waveform design, sync segment and data segment coexist in each hop, and the distinction of 5 data types is distinguished by the sync code of the sync segment of the first 12 hops. The sync code parent code of the first 12 hops is the same, and the sync codes of each data type are exclusive or different masks. The receiving end adaptively identifies different data types through the mask.
The above-described adaptive approach has its own drawbacks. The Link16 data chain needs to additionally add header section signals in a transmission waveform design structure for distinguishing the package types, so that the signal overhead is increased. The TTNT weapon cooperative data chain adopts a synchronous segment mother code or different masks to adaptively identify the data type, and compared with the Link16 data chain, the TTNT weapon cooperative data chain has no extra signal overhead. However, synchronization and data need to exist in each hop of signal at the same time, and when receiving, synchronization and data information need to be stored at the same time, so that the buffer resource for receiving signals is increased. And the frequency hopping of the synchronous pulse in different modes is aligned at the synchronous head, and the signal analysis can be carried out on the data segment only after the synchronous tail of all types is received, so that the data segment has to be cached, and the complexity of the receiving process is increased.
Disclosure of Invention
The embodiment of the application provides a multi-mode waveform self-adaption method, which utilizes synchronous section pulse configuration to self-adaption identify waveform mode types, improves the accuracy of mode identification and reduces signal overhead and receiving complexity.
The embodiment of the application provides a multimode waveform self-adaption method, which comprises the following steps:
a transmission waveform frame structure is predefined, the transmission waveform frame structure comprises a synchronization section, a data section and a propagation protection section which are sequentially arranged, wherein:
the synchronization section comprises the number of synchronization pulses matched with the waveform mode;
the frequency hopping of the synchronous section of different waveform modes is aligned at the tail of the synchronous section, and the synchronous pulse frequency of the aligned parts is the same;
the synchronous codes of different waveform modes are aligned at the tail of the synchronous section, the mother codes of the synchronous codes of the alignment parts of each waveform mode are the same, and the mother codes of the synchronous codes participating in the alignment parts are different;
broadband reception is performed based on the transmission waveform frame, and the following process is performed to perform waveform pattern recognition:
buffering the pulse signals with the maximum synchronous pulse number, and aligning;
reading the pulse signals of the maximum synchronous pulse number after alignment, and carrying out correlation operation on the pulse signals and the mother codes of the synchronous codes of the local maximum synchronous pulse number to determine N correlation values;
and comparing the determined N correlation values with a preset waveform mode to finish waveform mode identification.
Alternatively, the number of sync pulses for different waveform patterns may be different.
Optionally, the orthogonality masks corresponding to different waveform modes use Walsh sequences whose order satisfies w=2 x The value of x is the minimum value meeting the condition that w-M is more than or equal to 0, and M is the number of waveform modes.
Optionally, the synchronization code is an exclusive or result of each hop of the mother code and a mask, wherein the mask is obtained after the w-order Walsh sequence is repeated N/w times per bit, and N is the number of symbols of each hop of the synchronization segment.
Optionally, based on comparing the determined N correlation values with a preset waveform pattern, completing the waveform pattern recognition includes:
performing correlation value sign bit conversion on the N correlation values according to the mask; the method comprises the steps of,
accumulating the module values of all hops corresponding to each waveform mode to obtain M values;
and comparing the converted value of the sign bit with a threshold value, and identifying the mode corresponding to the first exceeding of the threshold value as the waveform mode of the received signal.
The embodiment of the application also provides a multi-mode waveform self-adaption method, which comprises the following steps:
a transmission waveform frame structure is predefined, the transmission waveform frame structure comprises a synchronization section, a data section and a propagation protection section which are sequentially arranged, wherein:
the synchronization section comprises the number of synchronization pulses matched with the waveform mode;
the frequency hopping of the synchronous section of different waveform modes is aligned at the tail of the synchronous section, and the synchronous pulse frequency of the aligned parts is the same;
the synchronous codes of different waveform modes are aligned at the tail of the synchronous section, the mother codes of the synchronous codes of the alignment parts of each waveform mode are the same, and the mother codes of the synchronous codes participating in the alignment parts are different;
framing based on the transmission waveform frame;
and (5) transmitting.
The embodiment of the application also provides receiving end equipment, which comprises a processor and a memory, wherein the memory is stored with a computer program, and the computer program realizes the steps of the multi-mode waveform self-adaption method when being executed by the processor.
The embodiment of the application also provides a transmitting end device, which comprises a processor and a memory, wherein the memory is stored with a computer program, and the computer program realizes the steps of the multi-mode waveform self-adaption method when being executed by the processor.
The embodiments of the present application also propose a computer-readable storage medium, on which a computer program is stored, which when being executed by a processor implements the steps of the multi-mode waveform adaptation method as described above.
According to the embodiment of the application, the waveform mode type is adaptively identified by utilizing the synchronous segment pulse configuration, so that the accuracy of mode identification is improved, and the signal overhead and the receiving complexity are reduced.
The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a basic flow chart of a multi-mode waveform adaptation method according to an embodiment of the present application;
fig. 2 is a transmission waveform frame structure example of an embodiment of the present application;
fig. 3 is an example of tail alignment of a sync segment hopping pattern according to an embodiment of the present application;
fig. 4 is an example of tail alignment of a synchronization code mother code pattern according to an embodiment of the present application;
fig. 5 is an example of a receiving-end multimode waveform adaptive recognition implementation method according to an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
An embodiment of the present application provides a multi-mode waveform adaptive method, as shown in fig. 1, including:
in step S101, a transmission waveform frame structure is predefined, and as shown in fig. 2, the transmission waveform frame structure includes a synchronization segment, a data segment, and a propagation protection segment that are sequentially arranged, where:
in a specific example, the data segment is used to transmit traffic information and the propagation protection segment is used to protect over-the-air transmission of signals.
The synchronous section comprises the number of synchronous pulses matched with the waveform mode, for example, M types of waveform modes are arranged, the synchronous section comprises the synchronous pulses of M types of modes, and each waveform mode comprises the number of synchronous pulses H i I=1, 2, …, M. In some embodiments, the number of synchronization pulses for different waveform patterns may be different or the same. The longest pulse number is recorded as H max ，H max ＝max{H i }。
The frequency hopping of the synchronous segments of different waveform modes is aligned at the tail of the synchronous segments, and the synchronous pulse frequencies of the aligned parts are the same. I.e. the synchronous section with different waveform modes has the frequency hopping frequency of the maximum pulse H max Is aligned at the tail of the synchronous segment, the synchronous pulse frequency of the aligned part is the same, pulse H max ,H max -1,…,H max -i+1 and pulse H i ,H i -1, …,1 are the same frequency.
The synchronous codes of different waveform modes are aligned at the tail of the synchronous segment, the mother codes of the synchronous codes of the aligned parts of each waveform mode are the same, and the mother codes of the synchronous codes participating in the aligned parts are different. Further to the sync segment sync code pattern and orthogonality mask design in this example, in this application, different waveform patterns sync codes are used for the most pulse H max Is aligned at the end of the synchronization segment, and the parent code of the aligned partial synchronization code is the same. I.e. pulse H max ,H max -1,…,H max -i+1 and pulse H i ,H i -1, …,1 are identical in the mother code of the corresponding synchronization code, but H i The mother codes are different.
Broadband reception is performed based on the transmission waveform frame, and the following process is performed to perform waveform pattern recognition:
in step S102, the pulse signal of the maximum number of synchronization pulses is buffered and aligned. Specifically, the flow is applied to a receiving end, and after the transmitting end performs framing transmission according to the transmission waveform frame, the receiving end performs broadband reception. Buffering and delaying 1-H max Pulse signals such that they are all identical to H max The pulses are aligned.
In step S103, the aligned pulse signal with the maximum number of synchronization pulses is read, and is correlated with the mother code of the synchronization code with the local maximum number of synchronization pulses to determine N correlation values. For example reading aligned H max Pulse signals, associate them with local H max The mother codes of the synchronous codes do sliding correlation operation, and each hop has N correlation values. In this example, a single hop is used to describe a pulse signal, for example, a waveform pattern having f1-f40 pulse signals, where f1 is a single hop, and the waveform pattern has 40 hops.
In step S104, waveform pattern recognition is completed based on the determined N correlation values compared with the preset waveform pattern.
According to the embodiment of the application, the waveform mode type is adaptively identified by utilizing the synchronous segment pulse configuration, so that the accuracy of mode identification is improved, and the signal overhead and the receiving complexity are reduced.
In some embodiments, the orthogonal masks corresponding to different waveform patterns employ Walsh sequences, and M masks are repeated with orthogonal Walsh sequences having an order satisfying w=2 x The value of x is the minimum value meeting the condition that w-M is more than or equal to 0, and M is the number of waveform modes. In some embodiments, the synchronization code is the result of exclusive-or of each hop of the mother code and a mask, where the mask is obtained after N/w times of repetition of each bit of the w-order Walsh sequence, N is the number of symbols of each hop of the synchronization segment, and N/w bits in the mask are one part, and the total is w parts.
In some embodiments, performing waveform pattern recognition based on the determined N correlation values compared to a preset waveform pattern comprises:
performing correlation value sign bit conversion on the N correlation values according to the mask; the method comprises the steps of,
accumulating the module values of all hops corresponding to each waveform mode to obtain M values;
and comparing the converted value of the sign bit with a threshold value, and identifying the mode corresponding to the first exceeding of the threshold value as the waveform mode of the received signal.
Based on the design of the transmission waveform frame structure, a waveform mode identification flow in the application is as follows:
the receiving end performs broadband reception according to the frequency hopping pattern. Buffering and delaying 1-H max Pulse signals such that they are all identical to H max The pulses are aligned.
Reading the aligned H max Pulse signals, associate them with local H max The mother codes of the synchronous codes do sliding correlation operation, and each hop has N correlation values.
And carrying out correlation value sign bit change on N correlation values in each hop according to the mask. The mask is 1, the sign bit is inverted, the mask is 0, and the sign bit is unchanged. M waveform modes, M groups of correlation values are provided in each hop, and each group comprises N correlation values.
Adding N correlation values of each hop of M waveform modes, taking a modulus value, and taking H for each mode i The modulus values of the pulses are accumulated to obtain M values.
Waveform patterns are adaptively identified by comparison to a threshold. The M waveform modes have M thresholds, the M values are compared with the corresponding M thresholds, and the mode which is first exceeded by the threshold is identified as the waveform mode of the received signal.
The embodiment of the application also provides a multi-mode waveform self-adaption method, which comprises the following steps:
a transmission waveform frame structure is predefined, the transmission waveform frame structure comprises a synchronization section, a data section and a propagation protection section which are sequentially arranged, wherein:
the synchronization section comprises the number of synchronization pulses matched with the waveform mode;
the frequency hopping of the synchronous section of different waveform modes is aligned at the tail of the synchronous section, and the synchronous pulse frequency of the aligned parts is the same;
the synchronous codes of different waveform modes are aligned at the tail of the synchronous section, the mother codes of the synchronous codes of the alignment parts of each waveform mode are the same, and the mother codes of the synchronous codes participating in the alignment parts are different;
framing based on the transmission waveform frame;
and (5) transmitting.
The embodiment of the application also provides an implementation case of the multi-mode waveform self-adaption method
Step 1: and (5) designing a transmission waveform frame structure. The frame structure includes a sync segment, a data segment, and a propagation protection segment, as shown in fig. 2. The sync segment contains a number of symbols n=16 per hop and a waveform pattern class m=6.
Step 2: and designing the pulse number of the synchronous section. The number of pulses for the 6 waveform modes is shown in Table 1, where the number of pulses is at most H max =40. The pulse numbers of mode 1 and mode 2 are 1 to 40, the pulse numbers of mode 3 and mode 4 are 1 to 20, and the pulse numbers of mode 5 and mode 6 are 1 to 10.
| Waveform pattern | 1 | 2 | 3 | 4 | 5 | 6 |
| Pulse number | 40 | 40 | 20 | 20 | 10 | 10 |
Step 3: and designing a synchronous section frequency hopping pattern. The sync segment hopping frequencies of the 6 waveform patterns are aligned at the sync segment ends of 40 pulses, and the sync pulse frequencies of the aligned portions are the same, as shown in fig. 3. The longest pulse mode, i.e., pulses 1-40 of mode 1 and mode 2, corresponds to frequencies f1-f40, with the 40 th pulse being the sync tail. The frequencies corresponding to the pulses of the remaining modes are shown in table 2. Frequencies corresponding to mode 3 and mode 4 are f21 to f40, and frequencies corresponding to mode 5 and mode 6 are f31 to f40.
TABLE 2 frequency hopping pattern
Step 4: synchronization segment synchronization code pattern and orthogonality mask designs. The 6 waveform patterns of synchronization codes are aligned at the end of the synchronization segment of 40 pulses, and the mother codes of the synchronization codes of the aligned portions are the same. As shown in fig. 4. The most pulse modes, namely, pulses 1-40 of mode 1 and mode 2, correspond to the parent codes S1-S40, with the 40 th pulse being the sync tail. The mother codes corresponding to the pulses of the remaining modes are shown in table 2. The mother codes corresponding to the mode 3 and the mode 4 are S21 to S40, and the mother codes corresponding to the mode 5 and the mode 6 are S31 to S40. The orthogonality masks corresponding to the 6 waveform modes adopt Walsh sequences, and the order w=2 3 =8. The 8-order Walsh sequence is repeated for 2 times per bit to obtain a mask, wherein each 2 bits in the mask is one part, 8 parts are total, and the synchronous code is the result of exclusive OR of each hop of the mother code and the mask. The 8-order walsh sequence and the mask for the 6 patterns are shown in table 3.
TABLE 3 frequency hopping pattern
Step 5: and the transmitting end selects a corresponding waveform mode according to service requirements, frames according to the transmission waveform design structure in the step 1, and then transmits.
Step 6: the receiving end performs broadband reception according to the frequency hopping pattern. The 1-40 pulse signals are buffered and delayed so that they are all aligned with the 40 th pulse. The implementation method of receiving-end multi-mode waveform self-adaptive recognition is shown in fig. 5.
Step 7: and reading the aligned 40 pulse signals, performing sliding correlation operation on the 40 pulse signals and the mother codes of the local 40 synchronous codes, wherein each hop has 16 correlation values.
Step 8: and carrying out sign bit change on the 16 correlation values in each hop according to a mask, wherein the mask is 1, the sign bit is inverted, the mask is 0, and the sign bit is unchanged. There are 6 sets of correlation values in each hop of the 6 waveform patterns, each set containing 16 correlation values.
Step 9: adding 16 correlation values of each hop of the 6 waveform modes, taking a module value, accumulating the module values of 40 pulses in a mode 1 and a mode 2, and accumulating the module values of 20 pulses in a mode 3 and a mode 4; mode 5 and mode 6 accumulate the modulus values of 10 pulses. The 6 waveform patterns result in 6 accumulated values.
Step 10: waveform patterns are adaptively identified by comparison to a threshold. The 6 waveform modes have 6 thresholds, the 6 accumulated values are compared with the corresponding 6 thresholds, and the mode which is first exceeded by the thresholds is identified as the waveform mode of the received signal.
According to the multi-mode waveform self-adaptive method, the synchronous section and the data section are separated in different hops in waveform design, and the synchronous section is concentrated at the beginning part of one frame of data, so that multi-mode waveform self-adaptive identification can be carried out by only buffering synchronous section signals, any signals except the synchronous section are not needed to be buffered, and storage resources and receiving complexity are reduced. Because the synchronous segment frequency hopping pattern and the synchronous code pattern are aligned at the tail of the synchronous segment, the complexity of the self-adaptive recognition of the multi-mode waveform is reduced. And the frequency hopping frequency of the synchronous pulse of the alignment part is the same as the mother code of the synchronous code, and the synchronous pulse is distinguished only by the orthogonality mask, so that the flexibility is greatly improved.
In the embodiment of the application, when the synchronous section is designed, the waveform mode type is adaptively identified by utilizing the synchronous section pulse number, the synchronous frequency hopping pattern, the synchronous code pattern and the orthogonality mask, so that the accuracy of mode identification is improved.
The synchronization section in the embodiment of the application is used for capturing and synchronizing signals and adaptively identifying waveform modes, so that the expenditure of the signals is saved, and the saved signals can be used for improving the transmission rate, the anti-interference capability or increasing the communication distance.
The embodiment of the application also provides receiving end equipment, which comprises a processor and a memory, wherein the memory is stored with a computer program, and the computer program realizes the steps of the multi-mode waveform self-adaption method when being executed by the processor.
The embodiment of the application also provides a transmitting end device, which comprises a processor and a memory, wherein the memory is stored with a computer program, and the computer program realizes the steps of the multi-mode waveform self-adaption method when being executed by the processor.
The embodiments of the present application also propose a computer-readable storage medium, on which a computer program is stored, which when being executed by a processor implements the steps of the multi-mode waveform adaptation method as described above.
According to the embodiment of the application, the waveform mode type is adaptively identified by utilizing the synchronous segment pulse configuration, so that the accuracy of mode identification is improved, and the signal overhead and the receiving complexity are reduced.
It should be noted that, in the embodiments of the present disclosure, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the protection of the claims, which fall within the protection of the present application.
Claims (9)
1. A method of multi-mode waveform adaptation, comprising:
a transmission waveform frame structure is predefined, the transmission waveform frame structure comprises a synchronization section, a data section and a propagation protection section which are sequentially arranged, wherein:
the synchronization section comprises the number of synchronization pulses matched with the waveform mode;
the frequency hopping of the synchronous section of different waveform modes is aligned at the tail of the synchronous section, and the synchronous pulse frequency of the aligned parts is the same;
the synchronous codes of different waveform modes are aligned at the tail of the synchronous section, the mother codes of the synchronous codes of the alignment parts of each waveform mode are the same, and the mother codes of the synchronous codes participating in the alignment parts are different;
broadband reception is performed based on the transmission waveform frame, and the following process is performed to perform waveform pattern recognition:
buffering the pulse signals with the maximum synchronous pulse number, and aligning;
reading the pulse signals of the maximum synchronous pulse number after alignment, and carrying out correlation operation on the pulse signals and the mother codes of the synchronous codes of the local maximum synchronous pulse number to determine N correlation values;
and comparing the determined N correlation values with a preset waveform mode to finish waveform mode identification.
2. The multi-mode waveform adaptation method of claim 1, wherein the number of synchronization pulses for different waveform modes can be different.
3. The multi-mode waveform adaptation method of claim 1, wherein the orthogonality masks corresponding to different waveform modes use Walsh sequences whose order satisfies w = 2 x The value of x is the minimum value meeting the condition that w-M is more than or equal to 0, and M is the number of waveform modes.
4. The multi-mode waveform adaptation method of claim 3, wherein the synchronization code is the result of exclusive-or of a mother code per hop with a mask, wherein the mask is obtained after repeating a w-order Walsh sequence N/w times per bit, and N is the number of symbols per hop of the synchronization segment.
5. The multi-mode waveform adaptation method of claim 1, wherein completing waveform pattern recognition based on the determined N correlation values compared with a preset waveform pattern comprises:
performing correlation value sign bit conversion on the N correlation values according to the mask; the method comprises the steps of,
adding N related values of each hop of any waveform mode, taking a module, and accumulating the module values of all hops corresponding to each waveform mode to obtain M values;
and comparing the converted value of the sign bit with a threshold value, and identifying the mode corresponding to the first exceeding of the threshold value as the waveform mode of the received signal.
6. A method of multi-mode waveform adaptation, comprising:
a transmission waveform frame structure is predefined, the transmission waveform frame structure comprises a synchronization section, a data section and a propagation protection section which are sequentially arranged, wherein:
the synchronization section comprises the number of synchronization pulses matched with the waveform mode;
the frequency hopping of the synchronous section of different waveform modes is aligned at the tail of the synchronous section, and the synchronous pulse frequency of the aligned parts is the same;
the synchronous codes of different waveform modes are aligned at the tail of the synchronous section, the mother codes of the synchronous codes of the alignment parts of each waveform mode are the same, and the mother codes of the synchronous codes participating in the alignment parts are different;
framing based on the transmission waveform frame;
and (5) transmitting.
7. A receiving side device comprising a processor and a memory, the memory having stored thereon a computer program which, when executed by the processor, implements the steps of the multi-mode waveform adaptation method of any one of claims 1 to 5.
8. A transmitting device comprising a processor and a memory, the memory having stored thereon a computer program which, when executed by the processor, implements the steps of the multi-mode waveform adaptation method of claim 6.
9. A computer readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps of the multi-mode waveform adaptation method of any one of claims 1 to 6.
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