CN113395226B

CN113395226B - Parameter reference method based on QAM and QPSK and data sending and receiving method

Info

Publication number: CN113395226B
Application number: CN202110666296.0A
Authority: CN
Inventors: 张连科
Original assignee: Xuzhou Space Time Thinking Intelligent Technology Co ltd
Current assignee: Xuzhou Space Time Thinking Intelligent Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-06-17
Anticipated expiration: 2041-06-16
Also published as: CN113395226A

Abstract

The invention relates to a parameter reference method based on QAM and QPSK, comprising the following steps: the data reference channel refers to the data, and the channel signal vector modulation also refers to specific data; taking the signal of the data channel as fixed independent data, taking a variable generated by a QAM or QPSK modulation mode of the channel signal as variable data, and changing at any time according to the reference number of a data terminal during downlink so as to increase the multiplexing rate of the combination number; the position refers to that the channel adopts position indication, the channel signal vector modulation can carry out data indication, QAM modulation variables of the position refers to that direct data indication is adopted under a low QAM modulation order, one part of QAM modulation variables is divided under high-order QAM modulation to be used as direct data indication, and the other part of QAM modulation variables is used as data initial position and data bit length variable indication. The invention can make the data transmission efficiency higher.

Description

Parameter reference method based on QAM and QPSK and data sending and receiving method

Technical Field

The invention belongs to the technical field of communication, and particularly relates to a parameter reference method based on QAM and QPSK and a data sending and receiving method.

Background

The current 4G and 5G are developed in parallel, but the energy consumption ratio of data transmission is still higher, and meanwhile, the symbol-bit ratio still has a larger data operation space. The invention patent CN105634564A an electromagnetic wave analog digital high-level transmission system and its transmission method and CN109217914A an electromagnetic wave data transmission rule and system can greatly improve the data transmission capability and increase the data transmission efficiency. The load of PAPR on the system in OFDM is reduced. However, if the number of channels is not changed, with the increase of the number of variables in the channels, the improvement of the number of overall variables does not improve the unit data volume more optimally, and particularly in the 5G technical application scenario, the data efficiency is still very low, so that an efficient data calculation method and an efficient data reference method are needed.

Disclosure of Invention

The invention aims to provide a parameter indicating method based on QAM and QPSK and a data sending and receiving method, which improve the position indication and the downlink data mapping to be more suitable for the prior art; the improvement is carried out on the logic level of the single signal variable, so that the data transmission efficiency is higher; by utilizing the signal variable, the terminals which are far away from the base station are enabled to obtain different transmission speed gains under different signal error code probabilities, and each channel signal is utilized more efficiently; through a multi-base-station time synchronization algorithm, the remote terminal can obtain the MIMO effect of a plurality of base stations; by combining the QAM technology and the position indication technology, the signal modulation modes such as QAM have the functions of initial position indication and bit length indication, and the transmission speed of the superimposed data is further improved.

The invention provides a parameter reference method based on QAM and QPSK, comprising the following steps:

the data reference channel refers to the data, and the channel signal vector modulation also refers to specific data;

taking the signal of the data channel as fixed independent data, taking a variable generated by a QAM or QPSK modulation mode of the channel signal as variable data, and changing at any time according to the reference number of a data terminal during downlink so as to increase the multiplexing rate of the combination number;

the position refers to the channel and adopts the position to refer to, the signal vector modulation of the channel can carry on the data to refer to, the QAM modulation variable of the position refers to the channel adopts the direct data to refer under low QAM modulation order, divide a part to refer as the direct data under the high-order QAM modulation, another part refers as the data initial position and data bit length variable.

Further, the parameter referring method further comprises:

different anti-interference distances are set between each QAM constellation point, so that the constellation points obtain different constellation point positions at different receiving distances, and the terminals at different distances can correctly receive the constellation point data belonging to the QAM modulation order.

Further, the parameter referring method further includes:

the uplink control carrier waves of the downlinks of a plurality of base stations are synchronized in time relative to the uplink time waveform of the same terminal by increasing the uplink control carrier wave compensation time, so that the uplink time of the terminal is completely the same as the uplink receiving time of the plurality of base stations.

The invention also provides a data transmission method applying the parameter reference method, and QAM only refers to data when downlink data is carried out, and the method specifically comprises the following steps:

step 1, setting data channel N of both communication parties_sCorresponding toChannel, setting QAM modulation order Q_SAnd data modulation corresponding constellation point parameters to generate a data memory address matrix corresponding to the channel;

step 2, reading the data chain of the data packet to be sent for segmentation, wherein the length of each part of the segmentation is log₂ ^Ns+log₂ ^QsFirst log of each data₂ ^NsReferring to a memory address pointing parameter as a channel;

step 3, post log₂ ^QsData QAM data pre-write log₂ ^NsCorresponding to the channel memory address; after all data of the data packet are written into the memory address matrix according to the sequence, a QAM modulation transmitting request is sent to the control system;

step 4, the control system receives QAM modulation transmitting requests of all terminals and judges whether to transmit data strings according to the QAM modulation request times; and when the sending request is judged to be failed, continuously sending a QAM modulation sending request to the control system, and when the sending request is judged to be successful, carrying out wireless signal QAM modulation to send data corresponding to the memory address until all the data of the memory address matrix are sent completely.

The invention also provides a data transmission method applying the parameter referring method, wherein the position referring channel QAM modulates the data moving bit number and the repeated data length corresponding to two vectors, and the method specifically comprises the following steps:

step 1, two communication parties set a channel QAM modulation order according to communication conditions, and correspondingly use two vectors of position indication channel QAM modulation as two control parameters, wherein one vector is used as a moving digit after the position indication channel moves for a distance, and the other vector is used as a bit total length of repeated data; QAM where data refers to a channel refers to data only;

step 2, reading the data packet to copy, and copying to generate three data of a, b and c, wherein the selected size of the data of the part a is log₂ ^Ns+log₂ ^QsDirectly carrying out channel data reference and QAM modulation data reference, and entering the step 4; b, selecting log behind a part of data₂ ^Ns+log₂ ^QsDividing the data with the size to generate data channel reference and QAM data, judging the transmission period of a channel signal, stopping entering the next step when the data is in the transmission period, and entering the step 3 when the data is not in the transmission period; c, the data of the vector length behind the data a is also selected for the data of the data a to move forwards, each data bit is compared from the head of the data, and the data parameter with the maximum moving bit number, moving signal number and the same bit data bit width is input to the step 3;

step 3, comparing the b parts of the segmentation data with the c parts of the segmentation data, entering the step 4 when the bit data size is large, and meanwhile, re-segmenting the b parts of the data and the c parts of the data, wherein the segmentation point is behind the bit data with the large bit data size; b. c, the data processing step is circulated until the data of the data packet is completely processed;

step 4, combining the a data and the data generated in the step 3 to generate a data channel, QAM (quadrature amplitude modulation) reference data, a position reference channel and a QAM reference data string, sending the data string to the step 2 to replace the same part of data of the original data string when the data string is generated once, generating a data string with segmentation, and entering the step 5 when the data string is generated once;

step 5, repeatedly referring the position reference channel by the data string, wherein QAM data is unchanged in reference, and the generated data is imported into a data transmitting memory to wait for QAM modulation transmission of the corresponding channel;

and 6, sending the QAM radio frequency signal, and finishing the transmission.

Further, a multi-thread multi-sub-process is adopted, which specifically comprises:

step 1), copying n parts of same data according to the threads distributed by the system, and inputting each part of data into one thread;

step 2), the first thread extracts the backward vector length data string and integrally moves to the first 1 divided data strings for comparison, displacement and same data bit width data are output, the backward vector length data string integrally moves 1bit for comparison, the displacement and same data bit width data are output, and the number of moving cycles is the number of position-designated channels; the second thread extracts the backward vector length data string and integrally moves to the first 2 divided data strings for comparison, outputs displacement and same data bit width data, integrally moves 1bit for comparison, outputs displacement and same data bit width data, and moves the cycle number as the position indication channel number; the nth thread extracts the backward vector length data string and integrally moves the backward vector length data string to the front n divided data strings for comparison, the bit width data of the displacement and the same data are output, the backward vector length data string is integrally moved by 1bit for comparison, the bit width data of the displacement and the same data are output, and the number of moving cycles is the number of position-designated channels; the output displacement and the same data bit width data enter the step 3)

Step 3), summarizing the displacement and the same data bit width data output by each thread, judging the same data bit width comparison, and inputting the maximum bit width data into the step 4);

and 4) summarizing the same data displacement and bit width data after each split data string is moved, judging the maximum bit width, outputting the times of moving the split data strings, the integral moving bit number and the same data length data of the thread to the step 3 when the bit length of one thread is maximum, and reserving the displacement bit length data for replacing the repeated reference in the period in the step 5 when the same data bit width length occurs.

The invention also discloses a data transmission method applying the parameter reference method, when QAM is high-order modulation, one part of QAM vector variables in a position reference channel is used as QAM data reference, and the other part is used as mobile bit position and data bit width reference, comprising the following steps:

step 1, two communication parties set a channel QAM modulation order according to communication conditions, one part of two vector combinations of position-indicating channel QAM modulation is used as QAM data indication, the other part is used as the number of mobile bits of the position-indicating channel after moving a bit distance and the total bit length of repeated data, and when the indication is carried out, the channel position indicates only a signal position but not the data indicated by the signal; data-reference channel QAM refers to data only;

step 2, the data packet is copied and divided to generate three copies of a, b and cAccording to the data of a, the selected size is log₂ ^Ns+log₂ ^QsDirectly carrying out channel data reference and QAM modulation data reference, and entering the step 4; b, selecting log behind a part of data₂ ^Ns+log₂ ^QsAnd (3) dividing the data with the size to generate data channel reference and QAM data, judging the transmission period of a channel signal, stopping entering the next step when the data is in the transmission period, and entering the step 3 when the data is not in the transmission period. c, similarly selecting data with the vector length behind the data a from the data a, entering a sub-process of a multi-thread data comparison algorithm with data reference, and inputting a data parameter with the maximum QAM (quadrature amplitude modulation) reference number, a shift digit, a shift signal number and the same bit data bit width into the step 3;

step 4, combining the a parts of data with the data generated in the step 3 to generate data channels and QAM (quadrature amplitude modulation) reference data and position reference channels and QAM reference data strings, and repeatedly referring the position reference channels, wherein QAM is unchanged, and the generated data is led into a data transmitting memory to wait for QAM modulation transmission of the corresponding channel;

and 5, sending the QAM radio frequency signal, and finishing the transmission.

Further, a multi-threaded data comparison algorithm is employed, comprising:

1), copying n +1 parts of same data according to the threads distributed by the system for the c parts of data, and inputting each part of data into one thread;

step 2), wherein the first thread extracts backward vector length to indicate that the data string is integrally moved to the first 1 divided data strings for comparison, outputs displacement and same data bit width data, moves 1bit to the whole for comparison, outputs displacement and same data bit width data, integrally moves 1bit to each back as a cycle, and the cycle times are position indicationThe number of the channel QAM displacement vectors, the output displacement and the same data bit width data enter the step 3); the second thread extracts backward vector length data strings, integrally moves the backward vector length data strings to the first 2 divided data strings for comparison, outputs displacement and same data bit width data, integrally moves 1bit backward for comparison, outputs displacement and same data bit width data, integrally moves 1bit every backward as cycle, the cycle times are positions and refer to channel QAM displacement vector numbers, and outputs displacement and same data bit width data to enter the step 3); the nth thread extracts a backward vector length data string and integrally moves the backward vector length data string to the front n divided data strings for comparison, displacement and same data bit width data are output, 1bit is moved to the whole for comparison, the displacement and same data bit width data are output, 1bit is integrally moved to each back to be taken as cycle, the cycle times are the number of position-indicating channel QAM displacement vectors, and the data of the displacement and same data bit width are output and enter the step 3); extracting log from the n +1 th thread₂ ^Ns+ a part of QAM is used as bit width data of data, and the output displacement and the same data bit width data enter the step 4);

and 4), summarizing and judging data of each thread, namely displacement, bit width data and QAM (quadrature amplitude modulation) reference data, directly outputting and combining the data with output data of a data reference sub-process when only one thread with the maximum bit width length exists, and reserving the displacement and bit width data for replacement when repeated reference occurs in a period when a plurality of threads with the maximum bit width length exist.

The invention also provides a data receiving method applying the parameter reference method, which comprises the following steps:

step 1, a decoding program imports encoding and decoding rules, sets a memory matrix for receiving post-processing data, and waits for a decoding instruction;

step 2, after the storage of the received post-processed data in the memory matrix is finished, a decoding instruction is sent to a decoding program, and the decoding program starts to decode;

step 3, reading and writing for the first time, and performing traversal processing on position designated data in the memory matrix until all vector data pointing to the data channel move to the corresponding data channel matrix position, and the position designated data directly by QAM (quadrature amplitude modulation) data is not processed;

step 4, reading and writing for the second time, generating data reference data and QAM data reference data, and converting QAM data information of a data channel into the data channel reference data and the QAM data reference data according to rules;

step 5, reading and writing for the third time, carrying out code searching and copying operation on QAM vector parameters in a data channel according to the time sequence, and completely converting the QAM vector parameters in all memory matrixes;

and 6, reading and writing for the fourth time, reading the data in the memory matrix according to the time sequence, combining the data into a data packet, sending the data packet, and finishing decoding.

By the scheme, the data transmission efficiency can be higher through the parameter reference method based on QAM and QPSK and the data transmitting and receiving method.

Drawings

FIG. 1 is a diagram illustrating different distances of base station sectors corresponding to different QAM modulation orders;

FIG. 2 is a flowchart of the QAM modulated information transmitting procedure of the present invention for terminals at different distances;

FIG. 3 is an exemplary flow chart of the 16-channel 16QAM downstream data processing referred by the data of the present invention;

FIG. 4 is a schematic diagram of a blank interval of 1024QAM modulation method and relative distance according to the present invention;

FIG. 5 is a diagram illustrating data reference rule 16+16QAM according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating 256QAM according to an embodiment of the present invention;

FIG. 7 is a flow chart of data processing for data reference of 16 data reference and data reference of 16 position reference 256QAM only;

FIG. 8 is a 256QAM vector index displacement and bit length for the position index channel of the present invention;

FIG. 9 is a flow chart of the joint processing algorithm for 256QAM data and position referencing of the present invention;

FIG. 10 is a multi-threaded multi-sub-process synchronous compare algorithm of the present invention;

FIG. 11 is a schematic diagram of the generation of 256 constellation point location vector references and data combinations according to an exemplary embodiment of the present invention;

FIG. 12 is a flow chart of a data referencing algorithm in one embodiment of the present invention;

FIG. 13 is a multi-threaded data comparison algorithm with data references in an embodiment of the invention;

FIG. 14 is a flow chart of a data reception algorithm of the present invention;

FIG. 15 is a schematic diagram of a memory address matrix according to the present invention;

FIG. 16 is a schematic diagram illustrating the present invention moving the position of the vector to all data after traversing and moving the reset indicating data;

FIG. 17 is a schematic diagram illustrating the generation of corresponding QAM data according to the rules of the present invention;

FIG. 18 is a schematic diagram of the present invention showing the principle of writing data by referring to a code-seeking position;

FIG. 19 is a diagram illustrating a code-seeking operation for referencing vector data according to the present invention;

FIG. 20 is a schematic representation of a 1024QAM data representation of the present invention;

FIG. 21 is a diagram illustrating a terminal located in a base station signal coverage overlap region;

FIG. 22 shows the pass pair T of the present invention_BAdjusting to keep the uplink time and length of the terminal consistent;

fig. 23 is a schematic diagram of an intersection where reliable uplink time is three uplink carrier times when uplink control carrier times received by a terminal are different.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The embodiment provides a parameter reference method based on QAM and QPSK, comprising the following steps:

By the parameter designation method, a data packet can obtain higher transmission speed under the basic condition, and the higher the probability of occurrence of a high-bit length variable is, the higher the data transmission speed is under the data random condition.

In this embodiment, the parameter indicating method further includes:

different anti-interference distances are set between each QAM constellation point, so that the constellation points obtain different constellation point positions at different receiving distances, and the terminals at different distances can correctly receive the constellation point data belonging to the QAM modulation order. Therefore, the terminals with different distances from the base station can obtain good QAM modulation signals, and the stability of data transmission is facilitated.

In this embodiment, the parameter indicating method further includes:

the uplink control carrier waves of the downlinks of a plurality of base stations are synchronized in time relative to the uplink time waveform of the same terminal by increasing the uplink control carrier wave compensation time, so that the uplink time of the terminal is completely the same as the uplink receiving time of the plurality of base stations. Compared with the existing 4GLTE and 5G communication technologies, the terminal can obtain the MIMO effect from a plurality of base stations, meanwhile, the signaling overhead (time unit) is far smaller than that of the existing communication technology, and the data transmission speeds of different far and near terminals can be balanced.

The present invention further provides a data transmission method applying the parameter reference method, where QAM only makes data reference data when performing downlink data (refer to the specific embodiment of fig. 3), and specifically includes the following steps:

step 1, setting data channel N of both communication parties_sCorresponding to the channel, setting QAM modulation order Q_SAnd data modulation corresponding constellation point parameters to generate a data memory address matrix corresponding to the channel;

step 2, reading a data chain of a data packet to be sent and segmenting, wherein the length of each segment of segmentation is log₂ ^Ns+log₂ ^QsFirst log of each data₂ ^NsReferring to a memory address pointing parameter as a channel;

step 4, the control system receives QAM modulation transmitting requests of all terminals and judges whether to transmit data strings according to the QAM modulation request times; and when the sending request is judged to be failed, continuously sending a QAM modulation sending request to the control system, and when the sending request is judged to be successful, carrying out QAM modulation on a wireless signal to send data corresponding to the memory address until all the data of the memory address matrix are sent completely.

The present invention further provides a data transmission method applying the parameter assigning method, where the position assigning channel QAM modulates all data shift bits and the length of the repeated data corresponding to two vectors (refer to the specific embodiment in fig. 8 and fig. 9), and the method specifically includes the following steps:

step 2, reading the data packet for copyingProcessing, copying to generate three data of a, b and c, wherein the selected size of the data of the a is log₂ ^Ns+log₂ ^QsDirectly carrying out channel data reference and QAM modulation data reference, and entering the step 4; b part of data selecting log behind a part of data₂ ^Ns+log₂ ^QsDividing the data with the size to generate data channel reference and QAM data, judging the transmission period of a channel signal, stopping entering the next step when the data is in the transmission period, and entering the step 3 when the data is not in the transmission period; c, the data of the vector length behind the data a is also selected for the data of the data a to move forwards, each data bit is compared from the head of the data, and the data parameter with the maximum moving bit number, moving signal number and the same bit data bit width is input to the step 3;

and 6, sending the QAM radio frequency signal, and finishing the transmission.

In the method for modulating all corresponding data shift bits and repeated data length of two vectors by using position-indicating channel QAM, a multi-thread multi-sub-process (refer to the specific embodiment of fig. 10) is adopted, which specifically includes:

1), copying n parts of same data according to the threads distributed by the system, and inputting each part of data into one thread;

The present invention also provides a data transmission method applying the above parameter indicating method, when QAM is high-order modulation, a part of QAM vector variables in the position indicating channel are indicated as QAM data, and another part is indicated as mobile bit position and data bit width (refer to the specific embodiment of fig. 12), including the following steps:

step 1, two communication parties set a channel QAM modulation order according to communication conditions, one part of two vector combinations of position-indicated channel QAM modulation is correspondingly used as QAM data to be indicated, the other part is used as the position to indicate the number of mobile bits after the channel moves by a bit distance and the total bit length of repeated data, and when the position is indicated, the channel position only indicates the signal position and does not indicate the data indicated by the signal; data-reference channel QAM refers to data only;

and 2, copying and dividing the data packet to generate three data parts of a, b and c, wherein the selected size of the data part of a is log₂ ^Ns+log₂ ^QsDirectly carrying out channel data reference and QAM modulation data reference, and entering the step 4; b part of data selecting log behind a part of data₂ ^Ns+log₂ ^QsAnd (3) dividing the data with the size to generate data channel reference and QAM data, judging the transmission period of a channel signal, stopping entering the next step when the data is in the transmission period, and entering the step 3 when the data is not in the transmission period. c, similarly selecting data with the vector length behind the data a from the data a, entering a sub-process of a multi-thread data comparison algorithm with data reference, and inputting a data parameter with the maximum QAM (quadrature amplitude modulation) reference number, a shift digit, a shift signal number and the same bit data bit width into the step 3;

and 5, sending the QAM radio frequency signal, and finishing the transmission.

When QAM is a high-order modulation, a part of QAM vector variables in the position reference channel are referred to as QAM data, and another part is referred to as a method for shifting bit positions and data bit width, and a multi-thread data comparison algorithm (refer to the embodiment of fig. 13) is adopted, including:

step 2), extracting the backward vector length from the first thread, wherein the backward vector length refers to that the data string integrally moves to the first 1 divided data strings for comparison, outputting displacement and same data bit width data, moving 1bit backward to the whole for comparison, outputting the displacement and same data bit width data, moving 1bit backward to the whole as a cycle, wherein the cycle time refers to the position and refers to the channel QAM displacement vector number, and outputting the displacement and same data bit width data to step 3); the second thread extracts backward vector length data strings, integrally moves the backward vector length data strings to the first 2 divided data strings for comparison, outputs displacement and same data bit width data, integrally moves 1bit backward for comparison, outputs displacement and same data bit width data, integrally moves 1bit every backward as cycle, the cycle times are positions and refer to channel QAM displacement vector numbers, and outputs displacement and same data bit width data to enter the step 3); the nth thread extracts the data string with the backward vector length and integrally moves to the first n divided data strings for comparison, displacement and the same data bit width data are output, 1bit is moved to the whole for comparison, the displacement and the same data bit width data are output, 1bit is moved to the whole in each direction to be used as circulation once, the circulation times refer to the channel QAM displacement vector number in terms of position, and the data with the displacement and the same data bit width are output and enter the step 3); extracting log from the n +1 th thread₂ ^Ns+ a part of QAM is used as bit width data indicated by data, and the output displacement and the same data bit width data enter the step 4);

The present invention also provides a data receiving method applying the above parameter referring method (refer to the specific embodiment of fig. 14), including:

step 5, reading and writing for the third time, carrying out code searching and copying operation on the QAM vector parameters in the data channel according to the time sequence, and completely converting the QAM vector parameters in all the memory matrixes;

The present invention is described in further detail below.

When the base station carries out downlink data on a large number of terminals, data references of the terminals can be greatly increased due to QAM modulation, but the multiplexing rate of channels of the same data references is reduced.

E.g., 16 channels 16QAM, may be time-multiplexed for frequency multiplexing, e.g., each QAM site may correspond to a different client, or each QAM may also represent an independent data reference, and each QAM may represent 8-bit data. But its one-cycle rate is 1/256. But is independent ofThe data channel has a cyclic rate of 1/16, and thus the frequency utilization cannot be improved even more. The present invention uses the signal of the data channel as fixed independent data, and the variable generated by the modulation method of QAM or QPSK of the channel signal as variable data, and is changed at any time according to the number of the data terminals during the downlink to increase the multiplexing rate of the number of combinations. And the data represented by each data channel is not reduced, and

because the prior art cannot time-sequence the channels, the data can only be represented by the modulation variable, and the variability of the data produced by the present invention is greatly enhanced.

For data uplink and single-pair single data transmission, the principle of a data channel is the same as that of a downlink data channel, but the data channel is different when signals are transmitted in a superposition mode, the higher the QAM modulation order is, the lower the efficiency of generated data reference is, because one signal can only carry one QAM variable at a time, 16QAM carries 4-bit information at a time, 256QAM carries 8-bit information at a time, the ratio of the information to the QAM modulation order is 1/4 and 1/32, the information is further reduced to 5/512 when the information is 1024QAM, and because 0 and 1 arrangement of digital information is completely random, the waste cannot be avoided, and the waste can also be increased along with the increase of the QAM modulation order.

Referring to fig. 2 and fig. 3, fig. 2 is a flowchart of processing a QAM modulation information transmitting program of a terminal corresponding to different distances, and fig. 3 is a typical flow of processing 16-channel 16QAM downlink data indicated by data.

Channel as fixed data, channel modulation as random data, single channel data amount of

Where n is the number of data channels and m is the number of modulations. Although it appears that the amount of data and the number of identical channels and the number of modulation variables are the same, the intra-channel variable isThe variable is more beneficial to the probability improvement of the downlink data. The data channel signal channel is not related to variable modulation, which has the advantage that the transmitting side can adjust the data variable in any combination to increase the amount of combination number of the combined downlink.

QAM signals are bivariates (two amplitude variables in phase, amplitude, or quadrature) and thus two different position references can be extended on a position reference or the two variables of the signal can be considered as the start or bit length of the data.

The principle behind QAM data position in the present invention is: the position refers to the same channel signal before or after the reference, the QAM modulation variable adopts direct data reference (the same as downlink data setting) under a low QAM modulation order, one part is separated under high-order QAM modulation to be used as direct data reference, and the other part is used as data starting position and data bit width variable reference.

In the conversion from binary data to high-level data, the data appearance probability decreases in the reciprocal value of true number with the increase of the level. E.g. 4 bits of data with 4 bits, 2⁴16 different data. While 8 has 8bit data but 2⁸256 different data. The probability of occurrence of each data is 1/16 and 1/256, respectively, and the larger the data scale number, the lower the probability of occurrence of its individual data. When the modulation order is expressed in the QAM constellation modulation, the larger the QAM modulation order is, the lower the bit width amplification ratio of the single data indicated by the binary number is. For example, 512QAM has 256 more constellation points than 256QAM, but each point only refers to 1bit more data. 1024QAM has 512 more constellation points than 512QAM, but also refers to 1bit more data. Due to the theoretical limitation of the prior communication technology, the data volume of a signal is fixed, and the data represented by a symbol signal is also fixed, so that the increase of the data volume caused by increasing the QAM modulation order is a necessary direction, but the increase of the data volume of the signal caused by increasing the QAM modulation order is also continuously reduced and has a limit. The position refers to the problem of signal repetition when data refers to channel uplink data can be adjusted, and when QAM data is combined, the data reference or the position reference de-repetition refers to some overlong data. Can refer to a positionThe increase by adding QAM variables is much larger than using data references directly.

The position refers to whether the first innovation on the basis of channel signal vector modulation (channel variable) is channel itself or position, but the signal vector modulation is changed into data reference, the position refers to not only channel reference data but also signal vector modulated data, the data refers to channel itself except data, the channel signal vector modulation also refers to specific data, and the data reference is the same as that of the existing modulation techniques such as QAM and QPSK, and the position is higher than that of the existing techniques in that each symbol represents two data, and the existing modulation techniques only represent one data.

The channel itself of the position reference represents the beginning or end of the data reference (i.e. starting or ending from the few bits of the data chain. or the data bit length) and the signal variable of the signal vector modulation represents the end or beginning of the data reference. The channel itself starts or ends with the signal vector modulated variable.

Since the value of the channel itself does not change, when setting the channel reference rule, modulation is performed according to the number of channels and the number of channel variables. Taking QAM for example, QAM is a joint amplitude and phase keying. So that one of its signals actually contains two vector variables. Thus, these two variables can be set as the overlapped data size (bit length) and the moving distance.

Uplink data or single-pair single-data superposition transmission is that data channels are as same as downlink, and the same modulation variables for position indication are flexibly used, so that more flexible position indication can be obtained, such as three tables in fig. 5. When the channel code type of a location is referred to as a fixed starting location or bit length, the range that can be referred to is greatly increased. As shown in fig. 6 and 11.

The fundamental characteristic of the communication radio frequency signal is that the received power is (transmit power factor)/(received distance)²Factor, and therefore the terminal is at different distances from the base station, the received power obtained is very different. The reception error rates for QAM signals are therefore also quite different, so that different QAM modulations can be introduced for different receptionsAnd the terminal with the efficiency can downlink channel signals with different QAM modulation orders. But also in the upstream.

The invention uses the principle that the signal of each channel on a wireless channel is an effective signal in a certain power domain no matter how distortion exists on the signal of each channel on the downlink without power multiplexing and special codebooks, and the signal is fixed channel data. The distortion effects of signals transmitted by a base station are different at different distances and under different shelters, so that the uplink control carrier can be used for aligning the terminal with downlink data and simultaneously performing power compensation on the uplink data. QAM and QPSK modulation are clearly applicable at the near end as in fig. 1, so that when data is downstream to a far terminal, QAM modulation can be used completely to downstream more data to a near terminal. When different far and near terminals receive the same channel signal, constellation signals with different offset probabilities can be obtained due to signal distortion. This allows a near terminal to get more data transmission without adding extra power. When the remote terminal is used as a high-data downlink priority terminal, the downlink data speed of the remote terminal can be increased, and the average data transmission speed of a plurality of terminals is balanced. When downlink data is carried out, a remote terminal is taken as a priority, when the data is carried out, segmentation is carried out, and the QAM modulation rule of the data is designed by using data calling application priority. For a channel signal, the channel itself is a fixed data reference, and the different variable for each channel is a data reference. When the principle of the present invention is adopted, the data reference of the channel itself is fixed, the downlink sequence rule is not changed, and the modulation signal itself can be changed, for example, when one of the modulation variables in the channel data reference is the most downlink request amount, the modulation variable can be used as the downlink signal. This has the advantage that the downlink data rule is more flexible and a higher average downlink speed is easier to achieve.

As shown in FIG. 1, FIG. 1 shows different QAM modulation orders applied to different distances from near to far in a sector direction of a base stationShown above is an 1/4 constellation diagram. The resolution of the terminals at different distances to the error is different due to the error probability (noise causes constellation points to overlap). Compensation is made by adding extra constellation blanks. Although this results in a waste of constellation points, the errors between constellation points can be made smaller. As shown in FIG. 4, the actual point locations of 1024QAM are (16+11)²4 × 2916, 868 more constellation points than 2048 QAM. 1892 constellation points are cancelled on the constellation diagram of the invention, and the 1024QAM of the invention can adapt to terminals with different distances through distance mapping to obtain different downlink and uplink speeds. The latest technical index of WIFI is 2048QAM, so that one code element is more than 1024QAM by one bit of data. The invention has 868 more constellation points than 2048QAM, is a code element 10bit data volume same as 1024QAM, and can be multiplexed on different terminals with different distances. And also

Compared with 2048QAM and 1024QAM, the two-symbol-rate-modulation (QAM) data transmission method has the advantages that 1024 variables are added to 2048QAM and 1024QAM, but only one bit is added to the transmission bit of a single code element, 4 bits can be added by using 16 data channels in downlink, and the calculation formula of the single code element bit is

While

The single symbol is 3 bits more than 2048QAM, which does not seem to be much, but one symbol signal can be multiplexed to n terminals by combining the terminals with the combination number of electromagnetic waves. The total downlink data amount of a signal is the sum of n QAM modulated signals, which is much larger than the prior art.

Compared with the short-distance signal, the uplink signal of the long-distance terminal has small strength, so that the receiving effect of single base station MIMO can not be well obtained when QAM modulation is carried out on the uplink signal, and therefore the accuracy of the data signal is increased by synchronously receiving the QAM modulation signal by using multiple base stations.

The prior art selects a base station with the best signal quality to switch and transmit downlink data and uplink data by comparing uplink control carriers of a plurality of base stations, but does not indicate how to process the downlink data and the uplink data under the condition that the signal qualities of the multi-party base stations are similar. The invention makes the uplink control carrier waves of the downlinks of a plurality of base stations synchronous in time relative to the uplink time waveform of the terminal by modulating the uplink control carrier waves and increasing the uplink control carrier wave compensation time, so that the uplink time of the terminal is completely the same as the uplink receiving time of the plurality of base stations. Therefore, the uplink signals of the terminal can be received by a plurality of base stations simultaneously, and the MIMO effect of the plurality of base stations can be obtained.

The use state is as follows:

since the data packet is transmitted as known data, all its data is known data stored in the memory. Therefore, the data can be continuously traversed through a plurality of pipelines to carry out data reference so as to achieve optimal data transmission.

The following are three reference methods of a group of random data, which are respectively the position reference shown in the prior art i (CN105634564A an electromagnetic wave analog-digital high-level transmission system and transmission method thereof), the prior art ii (CN109217914A an electromagnetic wave data transmission rule and system) and the prior art iii (CN110677879A a data intercommunication execution method and system between base station and terminal), and the position-data reference shown in the present invention.

The data shown with reference to fig. 5 refers to rule 16+16 QAM.

0100011100101000001110111110000000011111111111000010101010001111100000011101101011100111001110111000110000110011110000110001010101011110001010101111001010010101＝

0100-0111-0010-1000-0011-1011-1110-0000-0001-1111-1111-1100-0010-1010-1000-1111-1000-0001-1101-1010-1110-0111-0011-1011-1000-1100-0011-0011-1100-0011-0001-0101-0101-1110-0010-1010-1111-0010-1001-0101＝

When referring to the prior art one, the data is referred to as follows.

N4-N7-N2-N8-N3-N11-N14-N16-N1-N15-N15-N12-N2-N10-N8-N15-N8-N1-N13-N10-N14-N7-N3-N11-N8-N12-N3-N3-N12-N3-N1-N5-N5-N14-N2-N10-N15-N2-N9-N5

40 signals are generated, and the total transmission period is 40 periods because the transmission periods are not overlapped

After position designation is performed by using the two and three methods in the prior art

First location refers to traversal-locating duplicate data refers to:

N4-N7-N2-N8-N3-N11-N14-N16-N1-N15-W1-N12-W10-N10-W11-W5-W13-W9-N13-W6-W14-N7-N3-N11-N8-W14-W4-W5-N12-W7-N1-N5-W1-N14-N2-N10-N15-W3-N9-W8

second position refers to traversal-refer to repeated position refers to repeat position refers.

N4-N7-N2-N8-N3-N11-N14-N16-N1-N15-W1-N12-W10-N10-W11-W5-W13-W9-N13-W6-W14-N7-N3-N11-N8-W8-W4-W12-N12-W7-N1-N5-W1-N14-N2-N10-N15-W3-N9-W14

A total of 40 channel reference signals are generated. Since different channels are used to be superposed in the time sequence, the total downlink period is 40/16-2.5 periods.

QAM data referencing using the present invention

First data reference traversal-splitting data into channel data reference and QAM constellation data reference:

N4-Q7-N2-Q8-N3-Q11-N14-Q16-N1-Q15-N15-Q12-N2-Q10-N8-Q15-N8-Q1-N13-Q10-N14-Q7-N3-Q11-N8-Q12-N3-Q3-N12-Q3-N1-Q5-N5-Q14-N2-Q10-N15-Q2-N9-Q5

since QAM data refers to a reference without participating in channel position, and belongs to the same signal as the channel reference, performing position reference traversal only needs to perform reference traversal on the channel.

The second refers to traversal:

N4-Q7-N2-Q8-N3-Q11-N14-Q16-N1-Q15-N15-Q12-W5-Q10-N8-Q15-W1-Q1-N13-Q10-N14-Q7-W9-Q11-W5-Q12-W11-Q3-N12-Q3-W11-Q5-N5-Q14-N2-Q10-W13-Q2-N9-Q5。

third traversal-perform repositioning reference for repositioning reference:

N4-Q7-N2-Q8-N3-Q11-N14-Q16-N1-Q15-N15-Q12-W5-Q10-N8-Q15-W1-Q1-N13-Q10-N14-Q7-W9-Q11-W6-Q12-W11-Q3-N12-Q3-W2-Q5-N5-Q14-N2-Q10-W13-Q2-N9-Q5。

the number of signal transmission times after the third traversal processing is 20, and the total downlink period is 20/16-1.25 periods, which is directly less than half of the time period of the prior art data plus position indication. Compared with the prior art, the 32-channel 16QAM has more channel reference data. The proportion of the data increment carried by a single symbol is reduced along with the increase of the QAM modulation order, but is always higher than the prior communication technology.

The following is a specific embodiment that uses the same approach to process 256QAM for 16+16 channels. One symbol data size of the prior art communication technique is

The data reference and location reference maps employed are as follows.

Fig. 6 is a 256QAM full data reference. The setting of QAM data is the same as in the prior art. The prior art communication technique uses the arrangement in the middle of fig. 6.

The data is converted as follows, following a string of binary characters

010001110010100010101010110011111111110000000101110100011111101010101111000000111011010111001110011100011111100111111111110000000101110101010101111000000100010101011110000001110100＝

The 256QAM modulation in the prior art can generate 22 symbols +4 bits 01000111-00101000, 10101010, 11001111, 11111100, 00000101, 11010001, 11111010, 10101111, 00000011, 10110110110110110101, 11001110, 01110001, 11111001, 11111111111, 11000000, 01011101, 01010101, 11100000, 01000101010, 00000111, and 0100100100100.

The generated QAM data is transmitted by the related art. And will not be described in detail here.

The prior art one, two, three data division processing with the same data is referred to by channel and 256QAM modulation can generate 15 symbols. The total variables of the generated data reference and the position reference are respectively 16 × 256, so that the data period can reach 16 × 256 when the data are sent, and the total period of data emission is greatly increased.

010001110010, 100010101010, 110011111111, 110000000101, 110100011111, 101010101111, 000000111011, 010111001110, 011100011111, 100111111111111, 110000000101, 110101010101, 111000000100, 010101011110, 000001110100 are three embodiments of the present invention for the same data string.

The first embodiment also generates 15 symbols by channel reference and 256QAM modulation, as shown in fig. 6, where N is data reference, Q is QAM reference, and W is position reference.

0100-01110010-1000-10101010-1100-11111111-1100-00000101-1101- 00011111-1010-10101111-0000-00111011-0101-11001110-0111-00011111-1001- 11111111-1100-00000101-1101-01010101-1110-00000100-0101-01011110-0000- 01110100

The upper data string may form a reference as

N4-Q114-N8-N170-N12-Q255-N12-Q5-N13-Q31-N10-Q175-N16-Q59-N5-Q206-N7- Q31-N9-Q255-N12-Q5-N13-Q85-N14-Q4-N5-Q94-N16-Q116

Performing position refers to traversing without modifying QAM data,

N4-Q114-N8-N170-N12-Q255-W1-Q5-N13-Q31-N10-Q175-N16-Q59-N5-Q206-N7- Q31-N9-Q255-N12-Q5-W7-Q85-N14-Q4-W6-Q94-N16-Q116

in the method, each code element generated by data transmission has the data bit length of log₂ ¹⁶+log₂ ²⁵⁶12, so the speed is stable.

Fig. 7 is a data processing flow chart of data reference, data reference only of 256QAM in 16 data reference and 16 position reference.

The method comprises the following steps:

step 1, setting data channel N of both communication parties_sCorresponding to the channel, setting QAM modulation order Q_SAnd modulating the corresponding constellation point parameters by data to generate a data memory address matrix corresponding to the channel. For example, fig. 6 sets 16 channels as data channels, 16 channels as position indication channels, and QAM modulation order of 256, so that each data channel signal indicates data length log₂ ¹⁶8, QAM data is log₂ ²⁵⁶＝8bit

Step 2, reading a data chain of a data packet to be sent for segmentation, wherein the length of each segmented data chain is 4+8 bits, the first 4 bits of each data are used as channel reference memory address pointing parameters, and the last 8 bits of data enter a QAM reference sub-process

Step 3, generating memory address of corresponding channel by the first 4 bits, and generating data of corresponding address by repeated referring to position

And 4, carrying out QAM data reference processing on the rear 8-bit data. And after the two data are processed, the two data are combined again and are exported to a memory matrix in the data transmission memory to form combined channel and QAM (quadrature amplitude modulation) designated data.

And 5, the transmitting program reads the data and sequentially transmits the signals of all the channels according to the time sequence, and the transmission is finished.

Because the QAM constellation point is only referred to by data, the data packets are divided into equal-length data, the data processing flow does not need to be traversed repeatedly, and only the repeated reference of position reference needs to be carried out. And combining the QAM modulated data with the channel reference data to transmit the QAM modulated signal over the correct channel when the signal is transmitted. The data processing flow is the simplest.

Location of the invention refers to the second embodiment

The data and position reference rule adopted by the embodiment is data reference and QAM data reference of FIG. 6, and position reference of FIG. 8.

Fig. 8 is a 256QAM vector of position-designated channel-designated displacement and bit length.

The channel is designated by the position, only backward displacement and bit length are used, the channel position is only designated by the position and does not refer to specific data, each time a data group is generated, the subsequent data are moved forward for comparison according to QAM variable values, data designation is generated step by step, 18 code elements +2bit of data are generated, the longer the length of the binary data is, the lower the probability of the same binary data is, therefore, the probability of generating 4bit designated data by using the algorithm is 1/16, the probability of generating 19bit designated data is 1/524287, and obviously, the probability of generating long bit long data by using pure position and bit length for data designation is very low. The reason for this rule is that the channel signal is an absolute value. There is a channel signal to which additional information can be added. The channel signal must have the designation, when generating the corresponding designation, especially only the channel data is the same, and then all are different, when the role of the channel of the position designation is overlapped with the QAM constellation designation. Underlying data partitioning

0100-01110010-1000-10101010-1100-11111111-1100-0000-01011101-0001- 11111010-1010-11110000-0011-10110101-1100-111-0011100-01111-1100- 111111111110-0000-0010111010-1010-101-1110-000001-0001-0101-01111000-0001- 1101-00

Generating

N4-Q114-N8-Q170-N12-Q255-W1X1Z1(W3X7Z1)-N16-Q93-N1-Q250-N10-Q240-N3- Q181-W6X1Z4-W9X4Z4-01111W4X4Z2(W5X3Z2)-W9X1Z13(W10X13Z13)-W9X3Z14(W3X3Z14)-W7X11Z4-W8X5Z7-W1X7Z1(W14X2Z1)-N5Q120(W3X2Z9)-W11X12Z5-00

Generation after channel repetition position reference processing

N4-Q114-N8-Q170-N12-Q255-W1X1Z1-N16-Q93-N1-Q250-N10-Q240-N3-Q181-W6X1Z4-W9X4Z4-W4X4Z2-W10X13Z13-W3X3Z14-W7X11Z4-W8X5Z7-W14X2Z1-N5Q120-W11X12Z5-00

The algorithm flow is shown in fig. 9. The combined processing algorithm for 256QAM data and position assignment in FIG. 9 comprises the steps of

Step 1, the two communication parties set the channel QAM modulation order to be 256 according to the communication conditions, and correspondingly, two vectors of which the positions refer to the channel QAM modulation are used as two control parameters, wherein one vector is used as a moving bit after the position refers to the channel moving distance, and the other vector is used as the bit total length of repeated data. Data refers to QAM of a channel only to data. The corresponding QAM data table is shown in FIG. 6, and the bit length displacement table is shown in the figure

Step 2, reading the data packet to copy, and copying to generate three data of a, b and c, wherein the selected size of the data of the a part is log₂ ¹⁶+log₂ ²⁵⁶And (4 + 8) 12-bit data, directly carrying out channel data reference and QAM modulation data reference, and entering the step 4. b, selecting log behind a part of data₂ ¹⁶+log₂ ²⁵⁶Dividing data with the size of 4+ 8-12 bits to generate data channel reference and QAM data, judging the transmission period of a channel signal, stopping entering the next step when the data channel reference and QAM data are in the transmission period, and entering the step 3 when the data channel reference and QAM data are not in the transmission period. c, the data with the length of 19bit vector behind the data a is also selected for forward movement and each data bit is compared from the head of the data, and the data parameter with the maximum moving bit number, moving signal number and same bit data bit width is input to the step 3

And 3, comparing the b part of the segmentation data with the c part of the segmentation data, entering the 4 th step when the bit data volume is large, and meanwhile, re-segmenting the b part of the data and the c part of the data, wherein the segmentation point is behind the bit data with the large bit data volume. B. c, the data processing step is circulated until the data packet is completely processed.

Step 4, combining the a data and the data generated in the step 3 to generate a data channel, QAM (quadrature amplitude modulation) reference data, a position reference channel and a QAM reference data string, sending the data string to the step 2 to replace the same part of data of the original data string to generate a data string with segmentation each time the data string is generated, and entering the step 5 for the data string each time the data string is generated

Step 5, repeatedly indicating the position indicating channel by the data string, wherein QAM data is unchanged, leading the generated data into a data transmitting memory (memory matrix), waiting for the QAM modulation transmission of the corresponding channel,

and 6, sending the QAM radio frequency signal, and finishing the transmission.

From the typical data processing of the embodiment, it can be seen that as long as the first 4 bits of data are the same, that is, the data channel reference appears repeatedly in the channel signal period, the position reference is necessarily performed, each group of subsequent data is determined in the algorithm, and the data channel of the subsequent data is compared, so that the overall reference trend of the data can be maximized.

The algorithm for performing a synchronous comparison using a multi-threaded multi-sub-flow is shown in fig. 10. When the prior art is used for traversing the process, one thread can also obtain the optimal solution by continuously repeating the sub-process, but one result is traversed once, and 256 cycle periods are needed totally. The invention has multi-core and multi-thread simultaneous working, directly uses multi-thread to compare, and can obtain the optimal solution as long as 16 threads circulate for 16 times. The steps are that

Step 1) c, copying 16 parts of same data according to threads distributed by a system, inputting each part of data into one thread,

and step 2) extracting 19 bits from the first thread, moving the whole data string with the vector length to the first 1 divided data strings for comparison, outputting displacement and data with the same data bit width, moving the whole to 1bit for comparison, and outputting the displacement and data with the same data bit width, wherein the moving cycle time is 16 times. And the second thread extracts the backward vector length data string and integrally moves the backward vector length data string to the first 2 divided data strings for comparison, the displacement and the same data bit width data are output, the backward vector length data string integrally moves 1bit for comparison, the displacement and the same data bit width data are output, and the moving cycle number is 16. And the nth thread extracts the backward vector length data string and integrally moves the backward vector length data string to the first n divided data strings for comparison, the displacement and the same data bit width data are output, the backward vector length data string is integrally moved by 1bit for comparison, the displacement and the same data bit width data are output, and the moving cycle number is 16. The output displacement and the same data bit width data enter the step 3

Step 3, summarizing the displacement and the same data bit width data output by each thread, judging the same data bit width comparison, and inputting the maximum bit width data into step 4

And 4, summarizing the same data displacement and bit width data after each split data string is moved, judging the maximum bit width, outputting the times of moving the split data strings, the integral moving bit number and the same data length data of the thread to the algorithm flow shown in the figure 9 when the bit length of one thread is maximum, and reserving the displacement bit length data when the same data bit width length occurs for replacing repeated reference in the period in the embodiment.

Third embodiment of the invention

Channel position here refers to the inclusion of a reference data function when QAM modulation has a data reference, and no channel data reference function when no data reference is present.

Fig. 11 is a generation of a typical 256 constellation point location vector reference and data combination.

0100-01110010-1000-10101010-1100-11111111-1100-0000010-1110-10001111-1101-01010111-1000-0001110-1101-0111001-1100-1110001-1111-10011111-1111- 110000000101-1101-010101011110-0000-01000101-0101-111000000111-0100

Generating

N4-Q114-N8-Q170-N12-Q255-W1Q2-N14-Q143-N13-Q87-W4-Q14-W2-Q57-W6-Q113-N15-Q159-W8X9Z13-W6X1Z13-N16-Q69-W8X7Z13-0100

Performing location-reference repeat reference processing

N4-Q114-N8-Q170-N12-Q255-W1Q2-N14-Q143-N13-Q87-W4-Q14-W2-Q57-W6-Q113-N15-Q159-W8X9Z13-W3X1Z13-N16-Q69-W5X7Z13-0100

Its channel position refers to the generation of 14 symbols +4 bits.

The data reference algorithm of the present embodiment is shown in fig. 12.

It can be seen from fig. 12 that in the main flow the same algorithm as described in the second embodiment, except that together the position references are multi-threaded data comparison algorithms with data references.

Fig. 13 is a multi-thread data comparison algorithm with data reference, which is different from the second embodiment in that the comparison is performed according to the data position reference shown in fig. 8, 19-bit data is extracted for comparison at one time, and in addition, 11-bit data generation position reference and QAM modulation data are directly extracted to participate in data bit width length comparison. So the single position index data of the embodiment can refer to 11bit data the lowest, and the second embodiment can refer to 4bit data the lowest. Therefore, on the premise of a large amount of data, the probability of data reference higher than that of the second embodiment is higher.

The data transmission flow embodiment is completed, and the data receiving principle and embodiment are as follows. The embodiment data is the data embodiment of the third embodiment, and the encoding rule is the embodiment of fig. 11.

The data reception principle uses different algorithms for QAM data and data calls. The data reception algorithm flow is shown in fig. 14. The steps are that

Step 1, a decoding program imports encoding and decoding rules, a receiving end generates a memory matrix composed of 32 memory addresses divided according to time by taking 16 data channels and 16 positions as reference channels +256QAM as an example, and waits for a decoding instruction

Step 2, after the storage of the received post-processed data in the memory matrix is finished, a decoding instruction is sent to a decoding program, and the decoding program starts to decode

Step 3, reading and writing for the first time, performing traversal processing on the position designated data in the memory matrix until all vector data pointing to the data channel move to the corresponding data channel matrix position, and the position designated data directly designated by QAM data are not processed

Step 4, reading and writing for the second time, generating data reference data and QAM data reference data, and converting QAM data information of the data channel into data channel reference data and QAM data reference data according to rules

Step 5, reading and writing for the third time, carrying out code searching and copying operation on QAM vector parameters in the data channel according to the time sequence, and completely converting the QAM vector parameters in all the memory matrixes

And 6, reading and writing for the fourth time, reading the data in the memory matrix according to the time sequence, combining the data into a data packet and sending the data packet, and finishing decoding

Fig. 15 is a schematic diagram of a memory address matrix, here QAM data for a corresponding sequential time and for a corresponding channel.

Fig. 16 is a process of traversing and moving the reset indicating data, and finally indicating all the data position movement with the vector.

As can be seen from fig. 16, the repetition position refers to that the QAM vector data is not affected, and it is only changed in the channel memory position where it is located.

Fig. 17 shows that corresponding QAM data references are generated according to rules, and the vector reference data is unchanged.

It can be seen in fig. 17 that when the position refers to the additional QAM data, the position refers to the channel and refers to the corresponding data channel, and when the position refers to the additional QAM vector variable, the position refers to the position, the code searching parameter is moved to the corresponding data channel memory matrix. This is to distinguish between different QAM data references, 256QAM for a data channel all referring to data being 8 bits wide, while the QAM data reference for the position referring channel used in example three is 128QAM, each referring to 7 bits wide data.

FIG. 18 is a schematic diagram of a code-seeking position referring to write data. The decoding program can directly carry out memory address code searching and data duplication through the code searching parameter (QAM vector parameter).

FIG. 19 shows a code-seeking operation performed on vector-referenced data. And converting the vector reference data into real data.

After the processing of fig. 19 is completed, the data packets can be sequentially read in time order to generate the final data packet.

It can be known from the third embodiment that after a part of data is used for referring, the position reference can be the lowest, or the data with only small normal QAM1bit can be referred, but the reference with larger data volume can be certainly used under a certain probability. For example, 1024QAM shows that the normal data value is 10-bit data of one constellation point, and 13-bit data index and 35-bit long data position index can be generated by using the method according to embodiment 3 of the present invention, and when the number of symbols with 14 or more bits accounts for 50% of the total number of symbols, the data index can transmit more data than the embodiment, and by using different encoding methods, the ratio can be increased, so that more data can be transmitted under the condition of the same number of symbols.

In the multi-base station MIMO embodiment of the far-distance terminal and the multi-base station uplink data at the same time, in order to increase the uplink speed of the far-distance terminal, the multi-base station MIMO can be used for enabling the data signal receiving accuracy of the terminal to be higher, and therefore, high-order QAM modulation can be used for increasing the data transmission speed.

The uplink control carrier wave can control the uplink of different terminals by adjusting the waveform, so that the synchronization of a plurality of base stations can use one base station as a main data processing base station of a data downlink uplink terminal, and a compensation time T is increased by comparing the total multipoint access time_B. Let total time of main processing base station be T_ZThe air interface time from the terminal to each base station is T_K，T_KThe time of (2) can be divided by the total time from the waveform transmission of the uplink control carrier of the base station to the reception of the uplink data of the terminal after the response time is removed. The line time from the branch base station to the main processing base station is T_LHardware response delay time of T_YIf the time relationship is T_Z＝T_K+T_L+T_B+T_YThe total time of each base station is equal, and the uplink time T is_kEqual, the compensation time T can be obtained_BThe air interface time of the data can be kept the same by adjusting, the uplink of the data is controlled by the uplink control carrier, and different waveforms and time are adjustedThe interval can control the uplink of the terminals with different distances. Because the distances of the terminals to the base stations are different, the time difference of air interface transmission is different. Time alignment of uplink control carrier obviously requires more complex post-time compensation calculation if it is continuously adjusted using control signaling using existing 4G, 5G communication technologies. But with T_Z＝T_K+T_L+T_B+T_YWhen calculating, line time T_LAnd hardware response delay time T_YIs constant, and as a mobile terminal, T_KIs also constantly changing, thus by adjusting T_BThe uplink time control for the terminal on the uplink control carrier is adjusted by the size of the uplink control carrier, so that the uplink time from the terminal to each base station is the same. Therefore, the terminal uplink obtains the effect addition of a plurality of base stations MIMO. For the terminal, it is difficult to completely synchronize the uplink control carrier time, but the uplink data can still be reliable with acceptable error as shown in fig. 23. When the terminal cannot perform time synchronization with the base station well due to high-speed movement and the like, the received error cannot be adjusted quickly by adjusting T_BIn the compensation, the uplink time of the terminal starts from the starting time of the last received uplink control carrier by the multiple base stations, and the ending time is the ending time of the uplink control carrier terminated first, so that although the total uplink time is reduced, the reliability is also increased, especially for a terminal in high-speed movement, the MIMO synchronization of multiple base stations is desired, and taking the existing 5G communication technology as an example, the signaling overhead for synchronization is very large.

Fig. 21 is a schematic diagram of a terminal located in a base station signal coverage overlap area. In the figure, the terminal is close to three base stations in distance, but is positioned at the farthest end of the signal coverage range of the base stations, and the basic characteristic of the communication radio frequency signal is that the receiving power is (transmitting power factor)/(receiving distance)²Factor, and therefore the different distances of the terminals from the base station, the received powers obtained differ very much. MIMO for one base station is much less effective than joint MIMO for multiple base stations.

FIG. 22, by pairing T_BAdjusting the uplink time sum of the terminalThe length remains consistent.

Fig. 23 shows that the reliable uplink time is an intersection of three uplink carrier times when uplink control carrier times received by the terminal are different.

The uplink time of the terminal is not controlled by the distance, but by the uplink control carrier, which has the advantage that the control interaction flow required by the uplink time control of the terminal is far lower than that in the prior art. Meanwhile, no more control signaling is used for interaction to occupy signaling resources.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A parameter reference method based on QAM and QPSK is characterized by comprising the following steps:

2. The method for QAM/QPSK based parameter reference according to claim 1, further comprising:

3. The method for QAM/QPSK based parameter assignment according to claim 2, further comprising:

4. A data transmission method using the parameter assignment method of claim 1, wherein QAM only makes data assignment data when performing downlink data, and specifically comprises the following steps:

5. A data transmission method using the parameter indication method according to claim 1, wherein the position indication channel QAM modulates the number of data shift bits and the length of repeated data corresponding to all two vectors, and specifically comprises the following steps:

step 2, reading the data packet to copy, and copying to generate three data of a, b and c, wherein the selected size of the data of the a part is log₂ ^Ns+log₂ ^QsDirectly carrying out channel data reference and QAM modulation data reference, and entering the step 4; b, selecting log behind a part of data₂ ^Ns+log₂ ^QsDividing the data with the size to generate data channel reference and QAM data, judging the transmission period of a channel signal, stopping entering the next step when the data is in the transmission period, and entering the step 3 when the data is not in the transmission period; c, the data of the vector length behind the data a is also selected for the data of the data a to move forwards, each data bit is compared from the head of the data, and the data parameter with the maximum moving bit number, moving signal number and the same bit data bit width is input to the step 3;

step 3, comparing the b parts of the segmentation data with the c parts of the segmentation data, entering the step 4 when the bit data volume is large, and meanwhile, re-segmenting the b parts of the data and the c parts of the data, wherein the segmentation point is behind the bit data with the large bit data volume; b. c, the data processing step is circulated until the data of the data packet is completely processed;

and 6, sending the QAM radio frequency signal, and finishing the transmission.

6. The data transmission method according to claim 5, wherein a multi-thread multi-sub-process is adopted, and the method specifically comprises the following steps:

7. A data transmission method using the parameter indication method of claim 1, wherein when QAM is high-order modulation, a part of QAM vector variables in the position indication channel are indicated as QAM data, and another part is indicated as mobile bit position and data bit width, comprising the steps of:

and 2, copying and dividing the data packet to generate three data parts of a, b and c, wherein the selected size of the data part of a is log₂ ^Ns+log₂ ^QsDirectly carrying out channel data reference and QAM modulation data reference, and entering the step 4; b, selecting log behind a part of data₂ ^Ns+log₂ ^QsDividing the data with the size to generate data channel reference and QAM data, judging the transmission period of a channel signal, stopping entering the next step when the data is in the transmission period, and entering the step 3 when the data is not in the transmission period; c, similarly selecting data with the vector length behind the data a from the data a, entering a sub-process of a multi-thread data comparison algorithm with data reference, and inputting a data parameter with the maximum QAM (quadrature amplitude modulation) reference number, a shift digit, a shift signal number and the same bit data bit width into the step 3;

and 5, sending the QAM radio frequency signal, and finishing the transmission.

8. The data transmission method of claim 7, wherein a multi-threaded data comparison algorithm is used, and the method comprises:

step 2), wherein the first thread extracts backward vector length to indicate that the data string integrally moves to the first 1 divided data strings for comparison, outputs displacement and same data bit width data, moves 1bit backward to the whole for comparison, outputs displacement and same data bit width data, integrally moves 1bit every backward as a cycle, the cycle times are the number of position indication channel QAM displacement vectors, and outputs the displacement and same data bit width data to enter step 3); the second thread extracts backward vector length data strings, integrally moves the backward vector length data strings to the first 2 divided data strings for comparison, outputs displacement and same data bit width data, integrally moves 1bit backward for comparison, outputs displacement and same data bit width data, integrally moves 1bit every backward as cycle, the cycle times are positions and refer to channel QAM displacement vector numbers, and outputs displacement and same data bit width data to enter the step 3); extracting the data string with the backward vector length by the nth thread, integrally moving the data string with the backward vector length to the front n divided data strings for comparison, outputting displacement and same data bit width data, integrally moving the data string with 1bit for comparison after the data string with the backward vector length is moved to the front n divided data strings for comparison, outputting the displacement and same data bit width data, integrally moving the data string with 1bit after each time as cycle, wherein the cycle times are the number of position-indicating channel QAM displacement vectors, and outputting the displacement and same data bitThe wide data enters step 3); extracting log from the n +1 th thread₂ ^Ns+ a part of QAM is used as bit width data of data, and the output displacement and the same data bit width data enter the step 4);

9. A data receiving method using the parameter reference method of claim 1, comprising: