CN109561041B - Communication sequence construction method, system, equipment and computer storage medium - Google Patents

Communication sequence construction method, system, equipment and computer storage medium Download PDF

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CN109561041B
CN109561041B CN201811528492.6A CN201811528492A CN109561041B CN 109561041 B CN109561041 B CN 109561041B CN 201811528492 A CN201811528492 A CN 201811528492A CN 109561041 B CN109561041 B CN 109561041B
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CN109561041A (en
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周正春
杨洋
周亚晶
王勇
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Southwest Jiaotong University
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2615—Reduction thereof using coding
    • H04L27/2617—Reduction thereof using coding using block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
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Abstract

The application discloses a communication sequence construction method, a system, equipment and a computer storage medium, which are applied to an OFDMA system, wherein the method comprises the following steps: constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4; equally dividing the initial GDJ sequence into four subsequences; acquiring the target number of clients for data transmission, wherein the numerical value of the target number is less than or equal to 4; selecting continuous sub-sequences with the target number from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client; and setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain the multiplexing GDJ sequence. The communication sequence construction method provided by the application reduces the PAPR value of the OFDMA system. The communication sequence construction system, the communication sequence construction equipment and the computer readable storage medium solve the corresponding technical problems.

Description

Communication sequence construction method, system, equipment and computer storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, a system, a device, and a computer storage medium for constructing a communication sequence.
Background
OFDMA (Orthogonal Frequency Division Multiple Access) is a communication technique in which OFDM and FDMA techniques are combined, and is a transmission technique in which transmission data is loaded on part of subcarriers after channels are formed into subcarriers by OFDM (Orthogonal Frequency Division Multiplexing). However, the OFDM technology has a problem of high PAPR (peak-to-average power ratio), and the OFDMA technology has evolved from the OFDM technology, which inevitably inherits the problem of high PAPR, and the performance of the OFDMA technology fluctuates greatly due to the high PAPR.
In order to reduce the PAPR value of the OFDMA technique, a conventional method is to reduce the PAPR value of the OFDMA technique by using a coding method, which uses a code group with a smaller PAPR generated by channel coding for signal transmission, for example, using Golay complementary sequence to avoid the generation of high PAPR value.
However, Golay complementary sequences only focus on PAPR of the entire sequence and not on PAPR of sub-blocks, whereas OFDMA systems require sub-blocks of the sequence to also have a lower PAPR.
In summary, how to reduce PAPR of sub-blocks of a sequence of an OFDMA system is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
An object of the present application is to provide a communication sequence construction method that can solve, to some extent, the technical problem of how to reduce PAPR of sub-blocks of a sequence of an OFDMA system. The application also provides a communication sequence construction system, a device and a computer readable storage medium.
In order to achieve the above purpose, the present application provides the following technical solutions:
a communication sequence construction method is applied to an OFDMA system and comprises the following steps:
constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4;
equally dividing the initial GDJ sequence into four subsequences;
acquiring the target number of clients for data transmission, wherein the numerical value of the target number is less than or equal to 4;
selecting the continuous sub-sequences with the target number from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client so as to enable the client to carry out data transmission;
setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain a multiplexing GDJ sequence, and debugging the OFDMA system based on the multiplexing GDJ sequence.
Preferably, the dividing the initial GDJ sequence into four subsequences includes:
PSK modulation is carried out on the initial GDJ sequence to obtain a modulated GDJ sequence;
and equally dividing the modulated GDJ sequence into four subsequences.
Preferably, the constructing an initial GDJ sequence with a sequence length value of a target length value includes:
receiving a target positive integer value and a target even value;
constructing the initial GDJ sequence based on the target positive integer values and the target even values.
Preferably, the constructing the initial GDJ sequence based on the target positive integer value and the target even value includes:
constructing the initial GDJ sequence based on the target positive integer value and the target even value by adopting a GDJ sequence construction formula;
wherein the GDJ sequence construction formula comprises:
Figure BDA0001905071430000021
wherein, a represents the initial GDJ sequence; m represents the target positive integer value; q represents the target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
Preferably, in the GDJ sequence configuration formula, pi (1) ═ m, pi (2) ═ m-1, or pi (m) ═ m,π(m-1)＝m-1。
Preferably, in the GDJ sequence configuration formula, pi (1) ═ m-1, pi (2) ═ m, or pi (m) ═ m-1, and pi (m-1) ═ m.
Preferably, the PSK modulating the initial GDJ sequence to obtain a modulated GDJ sequence includes:
performing PSK modulation on the initial GDJ sequence by adopting a PSK modulation formula to obtain a modulated GDJ sequence;
wherein the PSK modulation formula includes:
Figure BDA0001905071430000031
wherein b represents the modulated GDJ sequence; m represents the target positive integer value; q represents the target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
A communication sequence construction system applied to an OFDMA system comprises:
the first construction module is used for constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4;
a first equalizing module, configured to equalize the initial GDJ sequence into four subsequences;
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring the target number of clients for data transmission, and the numerical value of the target number is less than or equal to 4;
a first selecting module, configured to select, from the initial GDJ sequence, the target subsequences of the continuous target number as target subsequences, and allocate each target subsequence to each client, so that the client performs data transmission;
a first multiplexing module, configured to set values of other subsequences except for the target subsequence in the initial GDJ sequence to 0, to obtain a multiplexed GDJ sequence, and debug the OFDMA system based on the multiplexed GDJ sequence.
A communication sequence constructing device applied to an OFDMA system comprises:
a memory for storing a computer program;
a processor for implementing the steps of the communication sequence construction method as described in any one of the above when executing the computer program.
A computer readable storage medium applied to an OFDMA system, the computer readable storage medium having stored therein a computer program which, when executed by a processor, implements the steps of the communication sequence construction method as recited in any one of the above.
The application provides a communication sequence construction method, which is applied to an OFDMA system and comprises the following steps: constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4; equally dividing the initial GDJ sequence into four subsequences; acquiring the target number of clients for data transmission, wherein the numerical value of the target number is less than or equal to 4; selecting continuous sub-sequences with target quantity from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client so as to enable the client to carry out data transmission; setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain a multiplexing GDJ sequence, and debugging the OFDMA system based on the multiplexing GDJ sequence. According to the communication sequence construction method provided by the application, the initial GDJ sequence is equally divided into four subsequences, when data transmission is carried out each time, continuous subsequences are selected as target subsequences used by a client, and the values of other subsequences except the target subsequences in the initial GDJ sequence are set to be 0 to obtain a multiplexing GDJ sequence, so that the PAPR value of a word block is low when OFDMA communication is carried out through the communication sequence construction method provided by the application. The communication sequence construction system, the communication sequence construction equipment and the computer readable storage medium solve the corresponding technical problems.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a first flowchart of a communication sequence constructing method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a communication sequence constructing system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a communication sequence constructing apparatus according to an embodiment of the present application;
fig. 4 is another schematic structural diagram of a communication sequence configuration device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a first flowchart of a communication sequence constructing method according to an embodiment of the present application.
The communication sequence construction method provided by the embodiment of the application is applied to an OFDMA system and can comprise the following steps:
step S101: and constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4.
In practical application, an initial GDJ sequence with a sequence length value of a target length value may be constructed first, and the target length value is an even number value greater than or equal to 4. It is understood that, in this process, the OFDMA system may further need to obtain a target length value, and specifically, the OFDMA system may receive an externally set target length value. The GDJ sequence referred to in the present application refers to a polyphase Golay complementary pair obtained by Paterson expanding a binary Golay complementary pair constructed by Davis and jadbis based on a boolean function, and each sequence in the Golay complementary pair is referred to as a Golay-Davis-jedwab (GDJ) sequence.
In a specific application scenario, the process of constructing an initial GDJ sequence with a sequence length value as a target length value may specifically be: receiving a target positive integer value and a target even value; an initial GDJ sequence is constructed based on the target positive integer value and the target even value.
Specifically, the process of constructing the initial GDJ sequence based on the target positive integer value and the target even value may be: constructing an initial GDJ sequence based on a target positive integer value and a target even value by adopting a GDJ sequence construction formula;
wherein, the GDJ sequence structure formula comprises:
Figure BDA0001905071430000051
wherein, a represents an initial GDJ sequence; m represents a target positive integer value; q represents a target even number value； c∈Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
Specifically, in order to further reduce the PAPR of the OFDMA system, in the GDJ sequence configuration formula of a communication sequence configuration method provided in the present application, pi (1) ═ m pi, (2) ═ m-or pi (m) ═ m pi (1) ═ m pi-,π(m-1)＝m-1。
Specifically, in order to further reduce the PAPR of the OFDMA system, in the GDJ sequence configuration formula of a communication sequence configuration method provided in the present application, pi (1) ═ m-1, pi (2) ═ m, pi (m) ═ m-1, and pi (m-1) ═ m.
Step S102: the initial GDJ sequence was divided equally into four subsequences.
In practical applications, after constructing the initial GDJ sequence, the initial GDJ sequence can be divided into four subsequences. The averaging means that the four subsequences are equal in length, and since the target length value is an even value of 4 or more, the initial GDJ sequence can be averaged into the four subsequences.
In a specific application scenario, the initial GDJ sequence may be equally divided into four sub-sequences by using a modulation technique, and the process of equally dividing the initial GDJ sequence into four sub-sequences may specifically be: PSK modulation is carried out on the initial GDJ sequence to obtain a modulated GDJ sequence; the modulated GDJ sequence is divided equally into four subsequences.
Specifically, the process of performing PSK modulation on the initial GDJ sequence to obtain a modulated GDJ sequence may specifically be: performing PSK modulation on the initial GDJ sequence by adopting a PSK modulation formula to obtain a modulated GDJ sequence;
wherein, PSK modulation formula includes:
Figure BDA0001905071430000061
wherein b represents a modulated GDJ sequence; m represents a target positive integer value; q represents a target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
Step S103: and acquiring the target number of the clients performing data transmission, wherein the value of the target number is less than or equal to 4.
In practical application, after the initial GDJ sequence is equally divided into four subsequences, the target number of clients performing data transmission can be obtained, and it is understood that the target number refers to the number of clients performing data transmission in one communication process. And because the number of the subsequences is four, if the value of the target number is greater than 4, then the clients are distributed to the subsequences, so that the value of the target number is less than or equal to 4.
Step S104: and selecting continuous sub-sequences with the target number from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client so as to enable the client to carry out data transmission.
In practical application, after the target number is obtained, continuous target number subsequences can be selected from the initial GDJ sequence as target subsequences, and each target subsequence is allocated to each client. Taking the numbering sequence of the four subsequences as 1,2, 3 and 4 as an example, the meaning of the sequence here is: when the value of the target number is 1, the selected 1 target subsequence can be any one of 1,2, 3 and 4; when the number of targets is 2, the 2 selected target subsequences may be 1,2, 3, or 3, 4; when the number of targets is 3, the selected 3 target subsequences may be 1,2, 3, or 2, 3, 4; when the number of targets is 4, the 4 target subsequences are selected to be 1,2, 3 and 4.
In practical application, after each target subsequence is allocated to each client, a process of the client performing data transmission based on the allocated target subsequence is the same as an existing OFDMA data transmission process, and the process may include the following processes: multiplexing, namely, the client allocates subcarrier channels based on the allocated target subsequence in a reasonable channel multiplexing mode; serial-to-parallel conversion, i.e., converting serial communication into parallel communication; IFFT, that is, inverse fast fourier transform transforms a frequency domain signal into a time domain signal; parallel-serial conversion, i.e. converting parallel communication into serial communication; inserting a cyclic prefix, namely adding a section of cyclic prefix before the time domain signal; digital-to-analog conversion, i.e. converting a digital signal into an analog signal; channels, i.e. the signals go through the radio channel; analog-to-digital conversion, i.e. converting an analog signal into a digital signal; removing the cyclic prefix, namely removing the cyclic prefix; serial-to-parallel conversion, i.e., converting serial communication into parallel communication; FFT, fast fourier transform, transforms a time domain signal into a frequency domain signal; parallel-to-serial conversion, i.e., converting parallel communication into serial communication; demultiplexing, i.e. extracting the signal at the corresponding position from the data after OFDM demodulation, so as to recover the signal transmitted by the user.
Step S105: setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain a multiplexing GDJ sequence, and debugging the OFDMA system based on the multiplexing GDJ sequence.
In practical applications, after allocating the target subsequence to each client for data transmission, the values of other subsequences except the target subsequence in the initial GDJ sequence may be set to 0, so as to obtain a multiplexed GDJ sequence, and debug the OFDMA system based on the multiplexed GDJ sequence, for example, perform channel estimation, OFDMA synchronization, and the like. Taking the four subsequences numbered 1,2, 3, 4 in sequence and the target subsequences numbered 2 and 3 as examples, the resulting multiplexed GDJ sequence has 0 for both 1 and 4 subsequences and the values for 2 and 3 subsequences remain unchanged.
The application provides a communication sequence construction method, which is applied to an OFDMA system and comprises the following steps: constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4; equally dividing the initial GDJ sequence into four subsequences; acquiring the target quantity of a client for data transmission, wherein the numerical value of the target quantity is less than or equal to 4; selecting continuous sub-sequences with target quantity from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client so as to enable the client to carry out data transmission; setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain a multiplexing GDJ sequence, and debugging the OFDMA system based on the multiplexing GDJ sequence. According to the communication sequence construction method provided by the application, the initial GDJ sequence is equally divided into four subsequences, each time data transmission is carried out, continuous subsequences are selected as target subsequences used by a client, and values of other subsequences except the target subsequences in the initial GDJ sequence are set to be 0 to obtain the multiplexed GDJ sequence, so that the PAPR value of the sub-blocks is low when OFDMA communication is carried out through the communication sequence construction method provided by the application.
In order to facilitate understanding of a communication sequence construction method provided in the embodiments of the present application, a PAPR value of an OFDMA system applying the communication sequence construction method provided in the present application is calculated by theory.
In the first embodiment, the GDJ sequence is constructed by a GDJ sequence construction formula of pi (1) ═ m, pi (2) ═ m-1, or pi (m) ═ m, pi (m-1) ═ m-1, as follows:
acquiring a set positive integer m and an even number q, and constructing a sequence with the length of 2mGDJ sequence of (1)
Figure BDA0001905071430000081
Wherein,
Figure BDA0001905071430000082
pi is a permutation of {1, 2.., m },
Figure BDA0001905071430000083
is a binary expression of an integer i, c ∈ Zq，ck∈ZqAnd satisfies pi (1) ═ m, pi (2) ═ m-1 or pi (m) ═ m,π(m-1)＝m-1；
When the number of clients performing data transmission is 1, 4 pieces of length H-2 are constructedm-2Of (2) a
Figure BDA0001905071430000084
Wherein xi is a unit element root of q times;
when the number of clients performing data transmission is 2, constructing 3 subsequences with length of 2H
Figure BDA0001905071430000085
When countingWhen the number of the clients to be transmitted is 3, 2 subsequences with the length of 3H are constructed
Figure BDA0001905071430000086
In the first embodiment, the calculated PAPR of the GDJ sequence as a whole and the subblocks has the upper bound as shown in table 1, and as can be seen from table 1, the PAPR value is small and stable.
TABLE 1 PAPR Upper bound value of GDJ sequences of the first class
Figure BDA0001905071430000087
Specifically, m is 6, q is 2, and ck0, (1 ≦ k ≦ m), and pi (1) ≦ 1, pi (2) ≦ 2, pi (3) ≦ 3, pi (4) ≦ 4, pi (5) ≦ 5, pi (6) ≦ 6, then for 0 ≦ i ≦ 2m-1, the constructed GDJ sequence is:
Figure BDA0001905071430000088
the four subsequences after being equally divided are:
Figure BDA0001905071430000091
Figure BDA0001905071430000092
Figure BDA0001905071430000093
Figure BDA0001905071430000094
assume that the four clients are user 1, user 2, user 3, and user 4, respectively, and a0Is allocated to user 1, a1DispensingTo the user 2, a2Is assigned to the user 3, a4To user 4;
if only user 1 transmits information, the multiplexed GDJ sequence is:
Figure BDA0001905071430000095
and PAPR (d) 1.8210；
If only user 2 transmits information, the multiplexed GDJ sequence is:
Figure BDA0001905071430000096
and papr (d) 1.8210;
if only user 3 transmits information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000097
and papr (d) 1.8210;
if only user 4 transmits information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000098
and PAPR (d) 1.8210；
If only user 1 and user 2 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000099
and papr (d) 2.0000;
if only user 2 and user 3 transmit information, the GDJ sequence after multiplexing is:
Figure BDA00019050714300000910
and papr (d) 2.0000;
if only the user 3 and the user 4 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000102
and PAPR (d) 2.0000；
If only user 1, user 2 and user 3 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000103
and PAPR (d) 3.1910。
If only user 2, user 3 and user 4 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000104
and papr (d) 2.9419;
if the user 1, the user 2, the user 3 and the user 4 transmit information at the same time, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000105
and papr (d) 1.8210;
referring to table 2, it can be seen that PAPR values of the whole and sub-blocks of ψ (a) are small and fluctuation is small.
TABLE 2 PAPR values of whole and sub-blocks of the first class ψ (a)
Figure BDA0001905071430000101
In the second embodiment, the GDJ sequence is constructed by a GDJ sequence construction formula of pi (1) ═ m-1, pi (2) ═ m, or pi (m) ═ m-1, pi (m-1) ═ m, as follows:
acquiring a set positive integer m and an even number q, and constructing a sequence with the length of 2mGDJ sequence of (1)
Figure BDA0001905071430000111
Wherein,
Figure BDA0001905071430000112
pi is a permutation of {1, 2.., m },
Figure BDA0001905071430000113
is a binary expression of an integer i, c ∈ Zq，ck∈ZqAnd satisfy pi (1) ═ m-1, pi (2) ═ m or pi (m) ═ m-1, pi (m-1) ═ m;
when the number of clients performing data transmission is 1, 4 pieces of length H-2 are constructedm-2Of (2) a
Figure BDA0001905071430000114
Wherein xi is a unit element root of q times;
when the number of clients performing data transmission is 2, constructing 3 subsequences with length of 2H
Figure BDA0001905071430000115
When the number of clients performing data transmission is 3, constructing 2 subsequences with length of 3H
Figure BDA0001905071430000116
In the second embodiment, the calculated PAPR of the GDJ sequence as a whole and the subblocks has the upper bound as shown in table 3, and as can be seen from table 3, the PAPR value is small and stable.
TABLE 3 PAPR values of GDJ sequences of the second class in their entirety and subblocks
Figure BDA0001905071430000117
Specifically, m is 6, q is 2, and ck0, (1 ≦ k ≦ m), and pi (1) ≦ 1, pi (2) ≦ 2, pi (3) ≦ 3, pi (4) ≦ 4, pi (5) ≦ 6, pi (6) ≦ 5, then for 0 ≦ i ≦ 2m-1, the constructed GDJ sequence is:
Figure BDA0001905071430000118
the four subsequences after being equally divided are:
Figure BDA0001905071430000119
Figure BDA00019050714300001110
Figure BDA00019050714300001111
Figure BDA0001905071430000121
assume that the four clients are user 1, user 2, user 3, and user 4, respectively, and a0Is allocated to user 1, a1Is assigned to user 2, a2Is assigned to the user 3, a4To user 4;
if only user 1 transmits information, the multiplexed GDJ sequence is:
Figure BDA0001905071430000122
and papr (d) 1.8210;
if only user 2 transmits information, the multiplexed GDJ sequence is:
Figure BDA0001905071430000123
and papr (d) 1.8210;
if only user 3 transmits information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000124
and papr (d) 1.8210;
if only user 4 transmits information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000125
and papr (d) 1.8210;
if only user 1 and user 2 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000126
and papr (d) 3.4142;
if only user 2 and user 3 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000127
and papr (d) 2.0000;
if only the user 3 and the user 4 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000128
and papr (d) 3.6419;
if only user 1, user 2 and user 3 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000131
and PAPR (d) 3.1910。
If only user 2, user 3 and user 4 transmit information, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000132
and papr (d) 3.2424;
if the user 1, the user 2, the user 3 and the user 4 transmit information at the same time, the GDJ sequence after multiplexing is:
Figure BDA0001905071430000133
and papr (d) 1.8210;
referring to table 4, it can be seen that PAPR values of the whole and sub-blocks of ψ (a) are small and fluctuation is small.
TABLE 4 PAPR values of whole and sub-blocks of the second class ψ (a)
Figure BDA0001905071430000134
The application also provides a communication sequence construction system, which has the corresponding effect of the communication sequence construction method provided by the embodiment of the application. Referring to fig. 2, fig. 2 is a schematic structural diagram of a communication sequence configuration system according to an embodiment of the present disclosure.
The communication sequence construction system provided by the embodiment of the present application is applied to an OFDMA system, and may include:
a first constructing module 101, configured to construct an initial GDJ sequence whose sequence length value is a target length value, where the target length value is an even number value greater than or equal to 4;
a first averaging module 102, configured to average the initial GDJ sequence into four subsequences;
a first obtaining module 103, configured to obtain a target number of clients performing data transmission, where a numerical value of the target number is less than or equal to 4;
a first selecting module 104, configured to select continuous target-number subsequences from the initial GDJ sequence as target subsequences, and allocate each target subsequence to each client, so that the client performs data transmission;
a first multiplexing module 105, configured to set a value of a subsequence other than the target subsequence in the initial GDJ sequence to 0, to obtain a multiplexed GDJ sequence, so as to debug the OFDMA system based on the multiplexed GDJ sequence.
The communication sequence construction system provided by the embodiment of the application is applied to an OFDMA system, and the first averaging module may include:
the first modulation unit is used for carrying out PSK modulation on the initial GDJ sequence to obtain a modulated GDJ sequence;
and the first equalizing unit is used for equalizing the modulated GDJ sequence into four subsequences.
The communication sequence constructing system provided by the embodiment of the application is applied to an OFDMA system, and the first constructing module may include:
a first receiving unit, configured to receive a target positive integer value and a target even value;
a first construction unit for constructing an initial GDJ sequence based on the target positive integer value and the target even value.
The communication sequence constructing system provided by the embodiment of the application is applied to an OFDMA system, and the first constructing unit may include:
the first construction subunit is used for constructing an initial GDJ sequence based on a target positive integer value and a target even value by adopting a GDJ sequence construction formula;
wherein, the GDJ sequence structure formula comprises:
Figure BDA0001905071430000141
wherein, a represents an initial GDJ sequence; m represents a target positive integer value; q represents a target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
The communication sequence configuration system provided by the embodiment of the application is applied to an OFDMA system, and in a GDJ sequence configuration formula, pi (1) is m, pi (2) is m-1 or pi (m) is m, and pi (m-1) is m-1.
The communication sequence configuration system provided by the embodiment of the application is applied to an OFDMA system, and in a GDJ sequence configuration formula, pi (1) ═ m-1, pi (2) ═ m or pi (m) ═ m-1, and pi (m-1) ═ m.
The communication sequence construction system provided by the embodiment of the present application is applied to an OFDMA system, and the first modulation unit may include:
the first modulation subunit is used for carrying out PSK modulation on the initial GDJ sequence by adopting a PSK modulation formula to obtain a modulated GDJ sequence;
wherein, PSK modulation formula includes:
Figure BDA0001905071430000151
wherein b represents a modulated GDJ sequence; m represents a target positive integer value; q represents a target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
The application also provides a communication sequence construction device and a computer readable storage medium, which have the corresponding effects of the communication sequence construction method provided by the embodiment of the application. Referring to fig. 3, fig. 3 is a schematic structural diagram of a communication sequence configuration device according to an embodiment of the present disclosure.
The communication sequence construction device provided by the embodiment of the application is applied to an OFDMA system, and includes a memory 201 and a processor 202, wherein the memory 201 stores a computer program, and the processor 202 implements the following steps when executing the computer program stored in the memory 201:
constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4;
equally dividing the initial GDJ sequence into four subsequences;
acquiring the target number of clients for data transmission, wherein the numerical value of the target number is less than or equal to 4;
selecting continuous sub-sequences with target quantity from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client so as to enable the client to carry out data transmission;
setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain a multiplexing GDJ sequence, and debugging the OFDMA system based on the multiplexing GDJ sequence.
The communication sequence construction device provided by the embodiment of the application is applied to an OFDMA system and comprises a memory and a processor, wherein a computer subprogram is stored in the memory, and the following steps are specifically realized when the processor executes the computer subprogram stored in the memory: PSK modulation is carried out on the initial GDJ sequence to obtain a modulated GDJ sequence; the modulated GDJ sequence is divided equally into four subsequences.
The communication sequence construction device provided by the embodiment of the application is applied to an OFDMA system and comprises a memory and a processor, wherein a computer subprogram is stored in the memory, and the following steps are specifically realized when the processor executes the computer subprogram stored in the memory: receiving a target positive integer value and a target even value; an initial GDJ sequence is constructed based on the target positive integer values and the target even values.
The communication sequence construction device provided by the embodiment of the application is applied to an OFDMA system and comprises a memory and a processor, wherein a computer subprogram is stored in the memory, and the following steps are specifically realized when the processor executes the computer subprogram stored in the memory: constructing an initial GDJ sequence based on a target positive integer value and a target even value by adopting a GDJ sequence construction formula;
wherein, the GDJ sequence structure formula comprises:
Figure BDA0001905071430000161
wherein, a represents an initial GDJ sequence; m represents a target positive integer value; q represents a target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
The communication sequence constructing device provided by the embodiment of the application is applied to an OFDMA system, and in a GDJ sequence constructing formula, pi (1) is m, pi (2) is m-1 or pi (m) is m, and pi (m-1) is m-1.
The communication sequence constructing device provided by the embodiment of the application is applied to an OFDMA system, and in a GDJ sequence constructing formula, pi (1) ═ m-1, pi (2) ═ m or pi (m) ═ m-1, and pi (m-1) ═ m.
The communication sequence construction device provided by the embodiment of the application is applied to an OFDMA system and comprises a memory and a processor, wherein a computer subprogram is stored in the memory, and the following steps are specifically realized when the processor executes the computer subprogram stored in the memory: PSK modulation is carried out on the initial GDJ sequence by adopting a PSK modulation formula to obtain a modulated GDJ sequence;
wherein, PSK modulation formula includes:
Figure BDA0001905071430000162
wherein b represents a modulated GDJ sequence; m represents a target positive integer value; q represents a target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
Referring to fig. 4, another communication sequence configuration device provided in the embodiment of the present application may further include: an input port 203 connected to the processor 202, for transmitting externally input commands to the processor 202; a display unit 204 connected to the processor 202, for displaying the processing result of the processor 202 to the outside; and the communication module 205 is connected with the processor 202 and is used for realizing the communication between the communication sequence constructing device and the outside. The display unit 204 may be a display panel, a laser scanning display, or the like; the communication method adopted by the communication module 205 includes, but is not limited to, mobile high definition link technology (HML), Universal Serial Bus (USB), High Definition Multimedia Interface (HDMI), and wireless connection: wireless fidelity technology (WiFi), bluetooth communication technology, bluetooth low energy communication technology, ieee802.11s based communication technology.
The computer-readable storage medium provided in the embodiments of the present application is applied to an OFDMA system, and a computer program is stored in the computer-readable storage medium, and when executed by a processor, the computer program implements the following steps:
constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4;
equally dividing the initial GDJ sequence into four subsequences;
acquiring the target number of clients for data transmission, wherein the numerical value of the target number is less than or equal to 4;
selecting continuous sub-sequences with target quantity from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client so as to enable the client to carry out data transmission;
setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain a multiplexing GDJ sequence, and debugging the OFDMA system based on the multiplexing GDJ sequence.
The computer-readable storage medium provided in the embodiments of the present application is applied to an OFDMA system, and a computer subprogram is stored in the computer-readable storage medium, and when being executed by a processor, the computer subprogram specifically implements the following steps: PSK modulation is carried out on the initial GDJ sequence to obtain a modulated GDJ sequence; the modulated GDJ sequence is divided equally into four subsequences.
The computer-readable storage medium provided in the embodiments of the present application is applied to an OFDMA system, and a computer subprogram is stored in the computer-readable storage medium, and when being executed by a processor, the computer subprogram specifically implements the following steps: receiving a target positive integer value and a target even value; an initial GDJ sequence is constructed based on the target positive integer values and the target even values.
The computer-readable storage medium provided in the embodiments of the present application is applied to an OFDMA system, and a computer subprogram is stored in the computer-readable storage medium, and when being executed by a processor, the computer subprogram specifically implements the following steps: constructing an initial GDJ sequence based on a target positive integer value and a target even number value by adopting a GDJ sequence construction formula;
wherein, the GDJ sequence structure formula comprises:
Figure BDA0001905071430000171
wherein, a represents an initial GDJ sequence; m represents a target positive integer value; q represents a target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
The computer-readable storage medium provided by an embodiment of the present application is applied to an OFDMA system, and in a GDJ sequence configuration formula, pi (1) ═ m, pi (2) ═ m-1, pi (m) ═ m, and pi (m-1) ═ m-1.
The computer-readable storage medium provided by an embodiment of the present application is applied to an OFDMA system, and in a GDJ sequence configuration formula, pi (1) ═ m-1, pi (2) ═ m or pi (m) ═ m-1, and pi (m-1) ═ m.
The computer-readable storage medium provided in the embodiments of the present application is applied to an OFDMA system, and a computer subprogram is stored in the computer-readable storage medium, and when being executed by a processor, the computer subprogram specifically implements the following steps: performing PSK modulation on the initial GDJ sequence by adopting a PSK modulation formula to obtain a modulated GDJ sequence;
wherein, PSK modulation formula includes:
Figure BDA0001905071430000181
wherein b represents a modulated GDJ sequence; m represents a target positive integer value; q represents a target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
The computer-readable storage media referred to herein may include Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
For a description of a relevant part in a communication sequence construction system, a device and a computer readable storage medium provided in the embodiments of the present application, refer to a detailed description of a corresponding part in a communication sequence construction method provided in the embodiments of the present application, and are not described herein again. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of the corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A communication sequence construction method applied to an OFDMA system comprises the following steps:
constructing an initial GDJ sequence with a sequence length value as a target length value, wherein the target length value is an even number value which is more than or equal to 4;
equally dividing the initial GDJ sequence into four subsequences;
acquiring the target number of clients for data transmission, wherein the numerical value of the target number is less than or equal to 4;
selecting the continuous sub-sequences with the target number from the initial GDJ sequence as target sub-sequences, and distributing each target sub-sequence to each client so as to enable the client to carry out data transmission;
setting the values of other subsequences except the target subsequence in the initial GDJ sequence to be 0 to obtain a multiplexing GDJ sequence, and debugging the OFDMA system based on the multiplexing GDJ sequence;
wherein the averaging of the initial GDJ sequence into four subsequences comprises:
PSK modulation is carried out on the initial GDJ sequence to obtain a modulated GDJ sequence;
equally dividing the modulated GDJ sequence into four of the subsequences;
wherein, the constructing an initial GDJ sequence with a sequence length value of a target length value comprises:
receiving a target positive integer value and a target even value;
constructing the initial GDJ sequence based on the target positive integer values and the target even values;
wherein the constructing the initial GDJ sequence based on the target positive integer values and the target even values comprises:
constructing the initial GDJ sequence based on the target positive integer value and the target even value by adopting a GDJ sequence construction formula;
wherein the GDJ sequence construction formula comprises:
Figure FDA0003087022330000011
wherein, a represents the initial GDJ sequence; m represents the target positive integer value; q represents the target even value; c is as large as Zq，ck∈Zq(ii) a π represents a permutation of {1,2, …, m };
Figure FDA0003087022330000012
is a binary expression of the integer i.
2. The method according to claim 1, wherein the GDJ sequence is constructed in the formula pi (1) ═ m, pi (2) ═ m-1 or pi (m) ═ m, pi (m-1) ═ m-1.
3. The method according to claim 1, wherein the GDJ sequence is constructed in the formula pi (1) ═ m-1, pi (2) ═ m or pi (m) ═ m-1, pi (m-1) ═ m.
4. The method according to any of claims 1 to 3, wherein the PSK modulating the initial GDJ sequence to obtain a modulated GDJ sequence comprises:
performing PSK modulation on the initial GDJ sequence by adopting a PSK modulation formula to obtain a modulated GDJ sequence;
wherein the PSK modulation formula includes:
Figure FDA0003087022330000021
wherein b represents the modulated GDJ sequence; m represents the target positive integer value; q represents the target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.
5. A communication sequence construction system, applied to an OFDMA system, comprising:
the device comprises a first construction module, a second construction module and a third construction module, wherein the first construction module is used for constructing an initial GDJ sequence with a sequence length value being a target length value, and the target length value is an even number value which is more than or equal to 4;
a first equalizing module, configured to equalize the initial GDJ sequence into four subsequences;
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring the target number of clients for data transmission, and the numerical value of the target number is less than or equal to 4;
a first selecting module, configured to select, from the initial GDJ sequence, the target subsequences of the continuous target number as target subsequences, and allocate each target subsequence to each client, so that the client performs data transmission;
a first multiplexing module, configured to set values of other subsequences except for the target subsequence in the initial GDJ sequence to 0, to obtain a multiplexed GDJ sequence, and debug the OFDMA system based on the multiplexed GDJ sequence;
wherein the first averaging module comprises:
the first modulation unit is used for carrying out PSK modulation on the initial GDJ sequence to obtain a modulated GDJ sequence;
a first averaging unit configured to average the modulated GDJ sequence into four of the subsequences;
wherein the first construction module comprises:
a first receiving unit, configured to receive a target positive integer value and a target even value;
a first constructing unit for constructing the initial GDJ sequence based on the target positive integer value and the target even value;
wherein the first construction unit includes:
a first constructing subunit, configured to construct the initial GDJ sequence based on the target positive integer value and the target even value by using a GDJ sequence constructing formula;
wherein the GDJ sequence construction formula comprises:
Figure FDA0003087022330000031
wherein, a represents the initial GDJ sequence; m represents the target positive integer value; q represents the target even value; c is as large as Zq，ck∈Zq(ii) a Pi represents a permutation of {1, 2.., m };
Figure FDA0003087022330000032
is a binary expression of the integer i.
6. A communication sequence configuration device, applied to an OFDMA system, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the communication sequence construction method according to any one of claims 1 to 4 when executing the computer program.
7. A computer-readable storage medium, for use in an OFDMA system, having a computer program stored thereon which, when being executed by a processor, carries out the steps of the communication sequence structuring method according to any one of claims 1 to 4.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202728A (en) * 2006-12-15 2008-06-18 华为技术有限公司 Method and system for communication based on OFDM
WO2014128369A1 (en) * 2013-02-22 2014-08-28 Cassidian Sas Method for demodulating a signal
CN108736947A (en) * 2017-04-25 2018-11-02 华为技术有限公司 Method for transmitting signals, relevant device and system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100905572B1 (en) * 2002-12-03 2009-07-02 삼성전자주식회사 Apparatus and method for generating preamble sequence in a communication system using orthogonal frequency division multiplexing scheme

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202728A (en) * 2006-12-15 2008-06-18 华为技术有限公司 Method and system for communication based on OFDM
WO2014128369A1 (en) * 2013-02-22 2014-08-28 Cassidian Sas Method for demodulating a signal
CN108736947A (en) * 2017-04-25 2018-11-02 华为技术有限公司 Method for transmitting signals, relevant device and system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Linear Codes With Two or Three Weights From Weakly Regular Bent Functions;zhengchun zhou等;《IEEE Transactions on Information Theory》;20160118;全文 *

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