CN112929904B - Information transmission method and device, communication equipment and storage medium - Google Patents

Information transmission method and device, communication equipment and storage medium Download PDF

Info

Publication number
CN112929904B
CN112929904B CN202110114640.5A CN202110114640A CN112929904B CN 112929904 B CN112929904 B CN 112929904B CN 202110114640 A CN202110114640 A CN 202110114640A CN 112929904 B CN112929904 B CN 112929904B
Authority
CN
China
Prior art keywords
bit
spread spectrum
current
code sequence
bit group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110114640.5A
Other languages
Chinese (zh)
Other versions
CN112929904A (en
Inventor
李晓明
郑波浪
李建龙
刘伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Shengzhe Science & Technology Co ltd
Original Assignee
Beijing Shengzhe Science & Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Shengzhe Science & Technology Co ltd filed Critical Beijing Shengzhe Science & Technology Co ltd
Priority to CN202110114640.5A priority Critical patent/CN112929904B/en
Publication of CN112929904A publication Critical patent/CN112929904A/en
Application granted granted Critical
Publication of CN112929904B publication Critical patent/CN112929904B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the invention discloses an information transmission method, an information transmission device, communication equipment and a storage medium, wherein the method comprises the following steps: acquiring bit stream information to be transmitted, and performing segmentation processing on the bit stream information according to a preset segmentation bit value to acquire a current bit paragraph; acquiring a delay bit group, a spread spectrum bit group and a modulation bit group of a current bit section according to a preset delay bit value, a preset spread spectrum bit value and a preset modulation bit value; acquiring a matched first target spread spectrum code sequence, a spread spectrum signal of a current bit paragraph and the transmission delay of the current bit paragraph according to the delay bit group, the spread spectrum bit group and the modulation bit group of the current bit paragraph; and transmitting the spread spectrum signal of the current bit section to second communication equipment according to the transmission delay of the current bit section, and realizing the implicit transmission of part of information to be transmitted by setting a delay bit group and a spread spectrum bit group, thereby reducing the data transmission amount of a channel and improving the transmission efficiency.

Description

Information transmission method and device, communication equipment and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus, a communication device, and a storage medium.
Background
With the continuous development of communication technology, wireless communication technology is receiving continuous attention and research. For wireless communication technology, the performance indexes mainly comprise reliability and effectiveness; where effectiveness requires maximization of frequency resource utilization within limited time and frequency domain resources.
For the improvement of the effectiveness of wireless communication, the utilization rate of time-frequency resources is improved mainly by the technologies of information source coding, space division multiplexing, beam forming and the like on the premise of not changing the transmitting power and the bandwidth. However, these techniques have great disadvantages, especially the amount of information to be transmitted cannot be reduced, and the complexity of implementing the modulation of the information to be transmitted by the transmitting end and the demodulation of the information by the receiving end is high.
Disclosure of Invention
The embodiment of the invention provides an information transmission method, an information transmission device, communication equipment and a storage medium, and aims to realize high-efficiency information transmission.
In a first aspect, an embodiment of the present invention provides an information transmission method, applied to a first communication device, including:
acquiring bit stream information to be transmitted, and performing segmentation processing on the bit stream information according to a preset segmentation bit value to acquire a current bit paragraph;
grouping and configuring the current bit paragraph according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value so as to obtain a time delay bit group, a spread spectrum bit group and a modulation bit group of the current bit paragraph;
acquiring a matched first target spreading code sequence from a spreading code sequence set according to the spreading bit group of the current bit paragraph; wherein the set of spreading code sequences comprises at least one spreading code sequence;
acquiring a spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment, and acquiring a transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spreading code sequence;
and transmitting the spread spectrum signal of the current bit section to second communication equipment according to the transmission delay of the current bit section.
In a second aspect, an embodiment of the present invention provides an information transmission method, which is applied to a second communications device, and includes:
taking the chip duration of the spread spectrum code sequence in the spread spectrum code sequence set as a receiving delay period, and acquiring a spread spectrum signal transmitted by first communication equipment according to the receiving delay period; wherein the set of spreading code sequences comprises at least one spreading code sequence;
sequentially carrying out inner product operation on the obtained current spread spectrum signal and the spread spectrum code sequence in the spread spectrum code sequence set to obtain inner product operation values, and obtaining a target inner product value with the maximum module value from each inner product operation value;
comparing the target inner product value with a preset threshold value to judge whether the second communication equipment and the first communication equipment are in timing synchronization or not; if the target inner product value is larger than the preset threshold value, determining that the second communication device and the first communication device are in timing synchronization;
if the timing synchronization between the second communication device and the first communication device is determined, acquiring a third target spreading code sequence corresponding to the target inner product value, and determining a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence;
acquiring a time delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence;
and acquiring the bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal.
In a third aspect, an embodiment of the present invention provides an apparatus for transmitting information, which is applied to a first communication device, and includes:
the bit paragraph acquisition module is used for acquiring the bit stream information to be transmitted and carrying out segmentation processing on the bit stream information according to a preset segmentation bit value so as to acquire a current bit paragraph;
the grouping configuration module is used for carrying out grouping configuration on the current bit paragraph according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value so as to obtain a time delay bit group, a spread spectrum bit group and a modulation bit group of the current bit paragraph;
a target spreading code sequence acquisition module, configured to acquire a first target spreading code sequence matched in a spreading code sequence set according to the spreading bit group of the current bit segment; wherein the set of spreading code sequences comprises at least one spreading code sequence;
a transmission delay acquiring module, configured to acquire a spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment, and acquire a transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spreading code sequence;
and the signal transmission module is used for transmitting the spread spectrum signal of the current bit paragraph to second communication equipment according to the transmission delay of the current bit paragraph.
In a fourth aspect, an embodiment of the present invention provides an information transmission apparatus, which is applied to a second communication device, and includes:
the spread spectrum signal acquisition module is used for taking the chip duration of the spread spectrum code sequence in the spread spectrum code sequence set as a receiving delay period and acquiring a spread spectrum signal transmitted by the first communication device according to the receiving delay period; wherein the set of spreading code sequences comprises at least one spreading code sequence;
an inner product value obtaining module, configured to perform inner product operation on the obtained current spreading signal and spreading code sequences in the spreading code sequence set in sequence to obtain inner product operation values, and obtain a target inner product value with a maximum modulus value from each inner product operation value;
the synchronization judging module is used for comparing the target inner product value with a preset threshold value so as to judge whether the second communication equipment and the first communication equipment are synchronized in timing; if the target inner product value is larger than the preset threshold value, determining that the second communication device and the first communication device are in timing synchronization;
a bit group acquiring module, configured to acquire a third target spreading code sequence corresponding to the target inner product value if it is determined that the second communication device is synchronized with the first communication device in timing, and determine a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence;
a delay bit group acquiring module, configured to acquire a delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence;
and the bit stream information acquisition module is used for acquiring the bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal.
In a fifth aspect, an embodiment of the present invention provides a communication device, including:
one or more processors;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for transmitting information according to any embodiment of the present invention.
In a sixth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the information transmission method according to any embodiment of the present invention.
According to the technical scheme disclosed by the embodiment of the invention, after bit stream information to be transmitted is obtained, a time delay bit group, a spread spectrum bit group and a modulation bit group of a current bit paragraph are obtained through bit paragraph division and grouping operation; simultaneously acquiring a matched first target spread spectrum code sequence, a spread spectrum signal of the current bit paragraph and the transmission delay of the current bit paragraph according to the delay bit group, the spread spectrum bit group and the modulation bit group of the current bit paragraph; and finally, transmitting the spread spectrum signal of the current bit section to second communication equipment according to the transmission delay of the current bit section, and realizing the implicit transmission of part of information to be transmitted by setting a delay bit group and a spread spectrum bit group, so that the data volume of channel transmission is reduced, the transmission efficiency is improved, and the utilization rate of time-frequency resources is further improved.
Drawings
Fig. 1A is a flowchart of a method for transmitting information according to an embodiment of the present invention;
fig. 1B is a schematic diagram of sending information according to an embodiment of the present invention;
fig. 1C is a schematic diagram of information transmission according to an embodiment of the present invention;
fig. 2A is a flowchart of a method for transmitting information according to a second embodiment of the present invention;
fig. 2B is a schematic diagram illustrating a message receiving method according to a second embodiment of the present invention;
fig. 3 is a block diagram of an information transmission apparatus according to a third embodiment of the present invention;
fig. 4 is a block diagram of an information transmission apparatus according to a fourth embodiment of the present invention;
fig. 5 is a block diagram of a communication device according to a fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1A is a flowchart of an information transmission method according to an embodiment of the present invention, where this embodiment is applicable to how communication devices transmit bitstream information when transmitting the bitstream information between the communication devices, and the method may be executed by an information transmission apparatus according to a third embodiment of the present invention, where the apparatus may be implemented by software and/or hardware and is integrated in a first communication device, and the method specifically includes the following steps:
s110, obtaining bit stream information to be transmitted, and performing segmentation processing on the bit stream information according to a preset segmentation bit value to obtain a current bit paragraph.
BitTorrent (BitTorrent), a content distribution protocol, is a software distribution systemTransmitting information by using a point-to-point technology; information to be transmitted based on a bit stream is a binary bit sequence and has the characteristic of large volume (namely, contains long bits), so that bit stream information needs to be segmented and transmitted in a segmented manner to ensure the reliability of information transmission and avoid information loss in transmission, as shown in fig. 1B, bit segmentation is performed on the bit stream, and each bit segment can be represented as a i ＝(a i,0 ,a i,1 ,…a i,N-1 ) I =1,2 … N, where i denotes a serial number of a bit segment, N denotes a number of bits of the bit segment, and N is the number of bit segments included in the current bit stream to be transmitted, which is equal to the number of bits of the bit stream information to be transmitted divided by the number of bits of each bit segment; after segmenting the bit stream information, taking each bit segment as a spread spectrum modulation unit and respectively transmitting the bit segments, wherein the bit segments are equal in length and are all preset segmentation bit values; the preset segmentation bit value is a segmentation bit value set when the bitstream information to be transmitted is subjected to segment division, for example, 20 bits, that is, the bitstream information to be transmitted is subjected to segment division once every 20 bits, and a plurality of bit segments with 20 bits are obtained. Particularly, the preset segment bit value may be set according to the number of bits of the bitstream information to be transmitted, so as to ensure that the length of the bitstream information to be transmitted is an integral multiple of the preset segment bit value, thereby ensuring that the number of bits of each bit segment is the same.
And S120, according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value, grouping and configuring the current bit paragraph to obtain a time delay bit group, a spread spectrum bit group and a modulation bit group of the current bit paragraph.
Different transmission channels have different numbers of bits of information to be transmitted and different transmission efficiencies, so that before configuring each bit segment in a grouping manner, channel estimation needs to be performed on the current transmission channel to determine the channel quality; as shown in fig. 1B, a preset delay bit value O, a preset spread spectrum bit value M, and a preset modulation bit value L are determined according to the channel quality estimation result, so that the packet configuration of the current bit segment is adapted to the current wireless transmission channel; wherein the number of bits N = O + M + L of the bit segment, and L is a power exponent of 2. The preset delay bit value is the length of the bit stream information used for representing the delay information; the preset spread spectrum bit value is the length of the bit stream information used for acquiring the spread spectrum code sequence; presetting a modulation bit value for the length of the bit stream information for spread spectrum modulation; it is noted that the sum of the preset delay bit value, the preset spread spectrum bit value and the preset modulation bit value should be equal to the preset segmented bit value, and the preset modulation bit value should be a power exponent of 2, so as to select a corresponding symbol modulation mode for the modulation bit group.
The time delay bit group is used for obtaining the time delay of transmission of the current bit section, the spread spectrum bit group is used for obtaining the spread spectrum code sequence corresponding to the current modulation bit group, and the modulation bit group is used for obtaining the spread spectrum signal to be transmitted. In the embodiment of the invention, a direct sequence spread spectrum method is adopted, and partial information of the bit stream to be transmitted is hidden in the time delay information and the spread spectrum code sequence, so that the time-frequency resource required for wireless transmission of the current bit section is reduced, and the utilization rate of the time-frequency resource in wireless communication is improved.
According to the preset time delay bit value, the preset spread spectrum bit value and the preset modulation bit value, grouping configuration is carried out on the current bit paragraph, namely the current bit paragraph is correspondingly divided into three parts, namely a time delay bit group, a spread spectrum bit group and a modulation bit group of the bit paragraph; as shown in fig. 1B, after grouping the bit segments according to the preset delay bit value O, the preset spread spectrum bit value M and the preset modulation bit value L, the delay bit group can be represented as
Figure BDA0002917667310000081
The spread bit group can be represented as
Figure BDA0002917667310000082
The modulation bit group can be expressed as
Figure BDA0002917667310000083
Namely that
Figure BDA0002917667310000084
Figure BDA0002917667310000085
Through the process, grouping of the bit stream information to be transmitted is realized.
S130, acquiring a matched first target spreading code sequence from the spreading code sequence set according to the spreading bit group of the current bit paragraph; wherein the set of spreading code sequences comprises at least one spreading code sequence.
A spreading code sequence, which is a coefficient when spreading modulation is performed on the modulation bit group of the current bit segment, and has a characteristic of approximating a random signal, so that the spreading code sequence can be used as a spreading parameter when spreading modulation is performed; a spreading code sequence including a longest linear feedback shift register sequence, a Gold code sequence, a Hadamard (Hadamard) sequence, and a Discrete Fourier Transform (DFT) basis vector of variation; the longest linear feedback shift register sequence is a periodic pseudorandom sequence which is easy to realize, has the advantage of strong regularity, and is widely applied to wireless communication; the Gold code sequence is a pseudo-random sequence provided on the basis of the longest linear feedback shift register sequence, and has good autocorrelation and cross-correlation properties; the Hadamard sequence is a sequence based on a Hadamard matrix, and any two lines of data in the Hadamard matrix are orthogonal with each other, so the Hadamard sequence has better cross-correlation property; the DFT change basis vectors are a series of basis vectors based on DFT change and have good cross correlation. The spread spectrum code sequence set is constructed in advance, the set formed by a plurality of spread spectrum code sequences is used as local storage information of each communication device, and the communication devices can acquire the spread spectrum code sequences required by modulation or demodulation through the locally stored spread spectrum code sequence set when carrying out spread spectrum modulation or demodulation; in the spreading code sequence set, each spreading code sequence has a corresponding serial number, so that each spreading code sequence is convenient to search. The first target spreading code sequence is the spreading code sequence corresponding to the spreading bit group in the current bit segment.
Spread spectrum bit group obtained from current bit segmentThereafter, as shown in FIG. 1B, the binary spread bit groups are combined
Figure BDA0002917667310000091
Converting the decimal value into a decimal value, and taking the converted value as a mapping serial number for searching a matched spread spectrum code sequence; searching in the spread spectrum code sequence set according to the mapping sequence number; for example, if the spreading bit group is 0010 (four bits), and the corresponding converted decimal value is 2, the 2 nd spreading code sequence in the spreading code sequence set is taken as the target spreading code sequence; obtaining matched target spread code sequence C by performing numerical transformation on spread bit group i The spread spectrum bit group information is hidden in the spread spectrum code sequence information for transmission, so that the utilization rate of time-frequency resources is improved; and because different bit segments adopt different spreading code sequences, the bit segments do not interfere with each other.
Optionally, in this embodiment of the present invention, the number of spreading code sequences in the spreading code sequence set is related to the preset spreading bit value, and the number of bits of the spreading code sequence is related to the preset modulation bit value. Specifically, the number of spreading code sequences in the spreading code sequence set needs to be greater than or equal to a value obtained by converting a preset spreading bit value, so as to ensure that a corresponding target spreading code sequence can be searched in the spreading code sequence set according to each preset spreading bit value; taking the preset spreading bit value of 4 as an example, the number of bits corresponding to the spreading bit group is 4, and when each bit value of the spreading bit group is 1, the converted maximum decimal value is 15, and then there should be at least 16 spreading code sequences in the spreading code sequence set, so as to ensure that each spreading bit group can find the corresponding spreading code sequence. The bit number of the spread spectrum code sequence in the spread spectrum code sequence set can be consistent with the preset modulation bit value so as to realize spread spectrum modulation on the modulation bit group according to the target spread spectrum code sequence; the number of bits of the spreading code sequence may also be inconsistent with the preset modulation bit value, that is, the number of bits of the spreading code sequence is greater than the preset modulation bit value, when the modulation bit group is subjected to spreading modulation, a part of the number of bits (for example, the front part, the rear part or the middle part) of the spreading code sequence is selected to perform spreading modulation on the modulation bit group, and it is sufficient to ensure that the number of bits of the adopted part of the spreading code sequence is consistent with the number of bits of the modulation bit group; for example, if the preset modulation bit value is 10, that is, the number of bits corresponding to the modulation bit group is 10, the length of the corresponding spreading code sequence should be greater than or equal to 10.
S140, acquiring the spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment, and acquiring the transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spreading code sequence.
In spread spectrum communications, before spread spectrum modulation, as shown in fig. 1B, groups of modulation bits are modulated
Figure BDA0002917667310000101
Firstly, information modulation is needed to form corresponding modulation symbols S i (ii) a Then, the digital signal after information modulation is spread spectrum modulated by adopting a first target spread spectrum code sequence to obtain a corresponding spread spectrum signal t i And the spectrum of the modulation symbol is widened, so that the same spectrum resource can be maximally shared by multiple bit sections.
The chip duration of the spread spectrum code sequence is the time corresponding to each chip after the spread spectrum code sequence is divided into a certain number of chips; the information of the number of the split chips of the spreading code sequence can be appointed by an information sending party and an information receiving party, so the chip duration of the spreading code sequence is the information which is known by the information sending party and the information receiving party before the information transmission is carried out. A transmission delay, which is a delay time for transmitting a spread spectrum signal by a transmitting end, namely, the transmission of the spread spectrum signal is carried out after the transmission delay is delayed after the starting point of a standard time slot; by setting corresponding transmission time delay for each spread spectrum signal, interference among the spread spectrum signals can be avoided, and reliability of wireless communication is improved.
Optionally, in this embodiment of the present invention, determining the transmission delay of the current bit segment according to the delay bit group and the chip duration of the spreading code sequence may include: converting the binary time delay bit group into decimal value and converting into decimal valueThe converted value is multiplied by the chip duration to obtain the propagation delay of the current bit segment. In particular, according to the formula τ i ＝D i ·T c Obtaining a transmission delay, wherein T c Is the chip duration, D, of the spreading code sequence i Is a decimal number, tau, corresponding to a group of time-delayed bits i Is the transmission delay, i is the serial number of the transmission delay; for example, with a delay bit set of 101, the converted decimal value is 5, the chip duration is 0.1 seconds, and the transmission delay is 0.5 seconds. As shown in fig. 1B, by grouping bits according to time delay
Figure BDA0002917667310000111
Determining a transmission delay tau i And the chip duration is information known by both the sending party and the receiving party, so that the receiving party can conveniently de-spread the spread spectrum signal.
Optionally, in an embodiment of the present invention, the acquiring a spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment may include: determining a modulation order according to the modulation bit group of the current bit paragraph, and acquiring a corresponding symbol modulation mode according to the modulation order; modulating the modulation bit group of the current bit paragraph according to the obtained symbol modulation mode, and obtaining a modulation symbol; acquiring the spread spectrum signal of the current bit segment according to the first target spread spectrum code sequence and the modulation symbol.
A modulation order representing the number of bits that each symbol (symbol) of the pattern can represent; after the modulation bit group of the current bit paragraph is obtained, determining a modulation order corresponding to the current modulation bit group according to the length of the modulation bit group; taking the length of the modulation bit group as L as an example, the modulation order m = log 2 L, i.e. when L is 8, the corresponding modulation order is 3. In the embodiment of the invention, a symbol modulation mode corresponding to a current modulation bit group is determined according to a modulation order; specifically, the symbol modulation scheme corresponding to each modulation order is agreed in advance between the first communication device (transmitter) and the second communication device (receiver), that is, the second modulation order is specific to each modulation orderThe communication equipment adopts a pre-agreed symbol modulation mode to carry out information modulation, and the second communication equipment adopts a symbol demodulation mode corresponding to the pre-agreed symbol modulation mode to carry out information demodulation; the predetermined symbol modulation scheme may be any one of symbol modulation schemes corresponding to the modulation orders, for example, when the modulation order is 2, each symbol of the code pattern represents two bits, and the predetermined symbol modulation scheme may be one of Binary Phase Shift Keying (BPSK) and differential coherent Binary Phase Shift Keying (DBPSK); when the modulation order is 4, the predetermined symbol modulation scheme may be one of Quadrature Phase Shift Keying (QPSK) and offset-Quadrature Phase Shift Keying (OQPSK); when the modulation order is 16, the predetermined symbol modulation scheme may be one of 16quadrature Amplitude modulation (16qam) and 16Amplitude Phase Shift keying (16apsk). After the modulation order is determined, acquiring an agreed symbol modulation mode according to the current modulation order; the corresponding modulation symbols are obtained by matching the modulation bit groups with different lengths with corresponding different symbol modulation modes, so that the selection of the lengths of the modulation bit groups and the mode for generating the modulation symbols are more flexible and diversified.
And S150, transmitting the spread spectrum signal of the current bit paragraph to a second communication device according to the transmission delay of the current bit paragraph.
After acquiring the spread spectrum signal, as shown in fig. 1B, the spread spectrum signal t is processed i Performing radio frequency modulation to realize spectrum shifting of spread spectrum signals so as to perform radio frequency transmission through a wireless channel of a corresponding frequency band; the radio frequency modulation mode may include vector modulation (IQ-path modulation); vector modulation means that a spread spectrum signal is divided into two paths of signals, carrier modulation is respectively carried out, and the two paths of carriers are orthogonal to each other, so that the frequency spectrum utilization rate can be improved. After completion of the radio frequency modulation, time information is recorded, as shown in fig. 1B, in accordance with the transmission delay τ i Sending the IQ path modulated signal at a fixed time(ii) a Specifically, as shown in fig. 1C, after a transmission delay is performed at a starting point of a transmission timeslot, the spread spectrum signal of the current bit segment is transmitted to the second communication device; wherein each dashed interval represents a chip duration of one spreading code sequence.
Optionally, in this embodiment of the present invention, after transmitting the spread spectrum signal of the current bit segment to the second communication device according to the transmission delay of the current bit segment, the method may further include: continuously acquiring a next bit paragraph, and performing grouping configuration on the next bit paragraph according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value to acquire a time delay bit group, a spread spectrum bit group and a modulation bit group of the next bit paragraph; acquiring a matched second target spreading code sequence from the spreading code sequence set according to the spreading bit group of the next bit paragraph; acquiring a spread spectrum signal of the next bit segment according to the second target spreading code sequence and the modulation bit group of the next bit segment, and acquiring a transmission delay of the next bit segment according to the delay bit group of the next bit segment and the chip duration of the spreading code sequence; and transmitting the spread spectrum signal of the next bit section to a second communication device according to the transmission delay of the next bit section.
Specifically, when transmitting a spread spectrum signal of a current bit segment, and acquiring a next bit segment, spread spectrum modulation is performed on the next bit segment; the process of performing spread spectrum modulation on the next bit segment is completely consistent with that of the current bit segment, and the next bit segment is grouped to further obtain the corresponding transmission delay, a second target spread spectrum code sequence and a spread spectrum signal of the next bit segment; as shown in fig. 1C, the next spread-spectrum signal is transmitted in the next transmission time slot according to the next transmission delay; wherein, the next transmission delay is not equal to the previous transmission delay and is related to the corresponding delay bit group; and continuing the process until all the bit stream information to be transmitted is transmitted to the second communication equipment.
According to the technical scheme disclosed by the embodiment of the invention, after bit stream information to be transmitted is obtained, a time delay bit group, a spread spectrum bit group and a modulation bit group of a current bit paragraph are obtained through bit paragraph division and grouping operation; simultaneously acquiring a matched first target spread spectrum code sequence, a spread spectrum signal of the current bit paragraph and the transmission delay of the current bit paragraph according to the delay bit group, the spread spectrum bit group and the modulation bit group of the current bit paragraph; and finally, transmitting the spread spectrum signal of the current bit section to second communication equipment according to the transmission delay of the current bit section, and realizing the implicit transmission of part of information to be transmitted by setting a delay bit group and a spread spectrum bit group, so that the data volume of channel transmission is reduced, the transmission efficiency is improved, and the utilization rate of time-frequency resources is further improved.
Example two
Fig. 2A is a flowchart of an information transmission method according to a second embodiment of the present invention, where this embodiment is applicable to how communication devices receive bit stream information when bit stream information is transmitted between the communication devices, and the method may be executed by an information transmission apparatus according to a fourth embodiment of the present invention, where the apparatus may be implemented by software and/or hardware and is integrated in a second communication device, and the method specifically includes the following steps:
s210, using the chip duration of the spread spectrum code sequence in the spread spectrum code sequence set as a receiving delay period, and acquiring a spread spectrum signal transmitted by first communication equipment according to the receiving delay period; wherein the set of spreading code sequences comprises at least one spreading code sequence.
The first communication device determines the transmission delay according to the delay bit group and the chip duration, and the delay bit group is a decimal positive number, so that the transmission delay is integral multiple of the chip duration, and the second communication device acquires a spread spectrum signal at intervals of one chip duration. Receiving and demodulating the radio frequency signal in the second communication device; then, for an acquired radio frequency signal, a decimal positive number corresponding to a time delay bit group corresponding to the radio frequency signal can be acquired; specifically, as shown in FIG. 2B, inAfter receiving the radio frequency signal, firstly, the radio frequency signal is demodulated, the broadband radio frequency signal is converted to the intermediate frequency, and the forward delay access is carried out according to the code piece duration of the spread spectrum code sequence to obtain the corresponding spread spectrum signal
Figure BDA0002917667310000141
Wherein i represents the sequence number of the received spread signal, dT C Representing the corresponding reception delay time, T, of the spread-spectrum signal c Is the chip duration of the spreading code sequence, d is a multiple of the chip duration; and recording the time of receiving each spread spectrum signal and the multiple of the chip duration corresponding to each time while acquiring the spread spectrum signal so as to determine the transmission delay information of the current spread spectrum signal.
S220, sequentially performing inner product operation on the obtained current spreading signal and the spreading code sequence in the spreading code sequence set to obtain inner product operation values, and obtaining a target inner product value with a maximum modulus value from each inner product operation value.
After acquiring a currently processed spread spectrum signal, determining a spread spectrum code sequence corresponding to the currently processed spread spectrum signal so as to de-spread the currently processed spread spectrum signal; specifically, when the spread spectrum signal and the corresponding matched spread spectrum code are subjected to inner product, that is, multiplied again, each bit of the inner product of the two identical spread spectrum codes is a positive value, and the modulus value of the corresponding inner product value is the largest at this time; so as to spread the signal by the current frequency as shown in fig. 2B
Figure BDA0002917667310000151
Inner product calculation is carried out with each spread spectrum code sequence in the spread spectrum code sequence set one by one to obtain the corresponding inner product calculation value
Figure BDA0002917667310000152
Where j is the sequence number of the spreading code sequence, 2 M The number of the spread spectrum code sequences in the spread spectrum code sequence set is M, and M is a preset spread spectrum bit value; simultaneously sequencing all inner product operation values according to the magnitude of the modulus value to determine a target inner product value with the maximum modulus value, wherein the target inner product value corresponds to the target inner product valueThe frequency code sequence is the spreading code sequence corresponding to the current spreading signal.
S230, comparing the target inner product value with a preset threshold value to judge whether the second communication device and the first communication device are in timing synchronization; and if the target inner product value is larger than the preset threshold value, determining that the second communication equipment and the first communication equipment are in timing synchronization.
Specifically, as shown in fig. 2B, before acquiring the third target spreading code sequence corresponding to the target inner product value, it needs to be determined whether timing synchronization is performed between the second communication device and the first communication device. By taking the target inner product value, i.e. the maximum inner product modulus value corresponding to the target inner product value
Figure BDA0002917667310000153
And comparing the maximum inner product modulus value with a preset threshold value, and if the maximum inner product modulus value is larger than the preset threshold value, indicating that the current first communication device and the second communication device are synchronous, namely the current spread spectrum signal is a spread spectrum signal sent by the first communication device through corresponding time delay, despreading and recovering the hidden information according to the current spread spectrum signal, so that the spread spectrum signal of the first communication device is accurately received, and the accuracy of acquiring the transmission information is ensured.
Optionally, in this embodiment of the present invention, after determining whether the second communication device and the first communication device are synchronized in timing, the method may further include: and if the second communication equipment is determined to be not timing synchronous with the first communication equipment, abandoning the current spread spectrum signal. If the maximum inner product modulus value corresponding to the target inner product value is less than or equal to the preset threshold value, it indicates that the second communication device and the first communication device are not synchronous with respect to the current spread spectrum signal, that is, the current spread spectrum signal is not transmission information sent by the first communication device in a corresponding time delay, and the corresponding target spread spectrum code sequence cannot be determined according to the current spread spectrum signal, and the corresponding bit group information cannot be determined according to the current spread spectrum signal. Discarding the spread spectrum signal which cannot pass the synchronous verification, and continuously acquiring the next spread spectrum signal according to the receiving time delay period; the method and the device realize accurate screening of the asynchronous spread spectrum signals and further ensure the accuracy of the acquired transmission information.
S240, if it is determined that the second communication device is synchronized with the first communication device in timing, acquiring a third target spreading code sequence corresponding to the target inner product value, and determining a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence.
After the current spread spectrum signal passes the synchronous verification, a corresponding third target spread spectrum code sequence is obtained according to the target inner product value, as shown in fig. 2B, the sequential identifier of the current third target spread spectrum code sequence in the spread spectrum code sequence set is determined
Figure BDA0002917667310000161
And converting the sequence identifier into a corresponding binary spread spectrum bit group
Figure BDA0002917667310000162
Simultaneously, the current third target spread spectrum code sequence is adopted to carry out de-spread spectrum on the current spread spectrum signal so as to obtain a corresponding modulation symbol
Figure BDA0002917667310000163
And demodulating the numerical modulation signal by adopting a predetermined demodulation mode to obtain a corresponding modulation bit group
Figure BDA0002917667310000164
It is worth noting that when the spreading code sequence set is composed of a Hadamard sequence or DFT-varied basis vectors, despreading of the spreading signal can be completed through fast Hadamard transform and fast fourier transform, which can improve despreading efficiency and reduce computational complexity. And simultaneously acquiring a third target spread spectrum code sequence corresponding to the current spread spectrum signal, thereby realizing the acquisition of the modulation bit group and spread spectrum bit group information corresponding to the spread spectrum signal.
And S250, acquiring a time delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence.
In particular toAs shown in fig. 2B, the receiving time of the current spread spectrum signal is divided by the chip duration of the spreading code sequence to obtain the decimal value corresponding to the current spread spectrum signal
Figure BDA0002917667310000171
Converting the currently acquired time value into a corresponding binary value, namely, a time delay bit group corresponding to the current spread spectrum signal
Figure BDA0002917667310000172
The acquisition of the time delay bit group information corresponding to the current spread spectrum code sequence is realized through the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence, so that the acquisition of all three parts of information of one bit paragraph is realized, and the acquisition of the complete bit stream information of the current bit paragraph can be realized through the combination of the three parts of information.
And S260, acquiring the bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal.
After obtaining the modulation bit group, the spreading bit group, and the delay bit group of the current spread spectrum signal, as shown in fig. 2B, according to the delay bit group
Figure BDA0002917667310000173
Spread spectrum bit block
Figure BDA0002917667310000174
And modulation bit group
Figure BDA0002917667310000175
The three parts of bit group information are assembled in order to obtain the complete bit stream information corresponding to the current spread spectrum signal
Figure BDA0002917667310000176
The obtained bit stream information is consistent with the corresponding bit paragraph information in the information sending equipment, and the corresponding bit paragraph information is really restored and protected on the premise of ensuring high-efficiency communicationThe accuracy of information transmission is proved
According to the technical scheme disclosed by the embodiment of the invention, the chip duration of the spread spectrum code sequence in the spread spectrum code sequence set is used as a receiving delay period, the current spread spectrum signal and a corresponding third target spread spectrum code sequence are obtained, and a modulation bit group and a spread spectrum bit group of the current spread spectrum signal are determined according to the third target spread spectrum code sequence; acquiring a time delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence; finally, according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal, bit stream information corresponding to the current spread spectrum signal is obtained, through setting of the time delay bit group and the spread spectrum bit group, on the premise that complete information transmission is guaranteed, implicit transmission of part of information to be transmitted is achieved, channel transmission data volume is reduced, transmission efficiency is improved, the utilization rate of time-frequency resources is improved, transmission information sent by first communication equipment is truly restored at a second communication equipment end, and accuracy of the obtained transmission information is guaranteed.
EXAMPLE III
Fig. 3 is a block diagram of a structure of an information transmission apparatus according to a third embodiment of the present invention, where the apparatus specifically includes: a bit segment acquisition module 310, a packet configuration module 320, a target spreading code sequence acquisition module 330, a transmission delay acquisition module 340 and a signal transmission module 350;
a bit paragraph obtaining module 310, configured to obtain bit stream information to be transmitted, and perform segmentation processing on the bit stream information according to a preset segmentation bit value to obtain a current bit paragraph;
a grouping configuration module 320, configured to perform grouping configuration on the current bit segment according to a preset delay bit value, a preset spread spectrum bit value, and a preset modulation bit value, so as to obtain a delay bit group, a spread spectrum bit group, and a modulation bit group of the current bit segment;
a target spreading code sequence acquiring module 330, configured to acquire a first matched target spreading code sequence in a spreading code sequence set according to the spreading bit group of the current bit segment; wherein the set of spreading code sequences comprises at least one spreading code sequence;
a transmission delay obtaining module 340, configured to obtain the spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment, and obtain the transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spreading code sequence;
a signal transmission module 350, configured to transmit the spread spectrum signal of the current bit segment to a second communication device according to the transmission delay of the current bit segment.
According to the technical scheme disclosed by the embodiment of the invention, after bit stream information to be transmitted is obtained, a time delay bit group, a spread spectrum bit group and a modulation bit group of a current bit paragraph are obtained through bit paragraph division and grouping operation; simultaneously acquiring a matched first target spread spectrum code sequence, a spread spectrum signal of the current bit paragraph and the transmission delay of the current bit paragraph according to the delay bit group, the spread spectrum bit group and the modulation bit group of the current bit paragraph; and finally, transmitting the spread spectrum signal of the current bit section to second communication equipment according to the transmission delay of the current bit section, and realizing the implicit transmission of part of information to be transmitted by setting a delay bit group and a spread spectrum bit group, so that the data volume of channel transmission is reduced, the transmission efficiency is improved, and the utilization rate of time-frequency resources is further improved.
Optionally, on the basis of the above technical solution, the number of spreading code sequences in the spreading code sequence set is related to the preset spreading bit value, and the number of bits of the spreading code sequence is related to the preset modulation bit value.
Optionally, on the basis of the foregoing technical solution, the transmission delay obtaining module 340 includes:
a symbol modulation mode obtaining unit, configured to determine a modulation order according to the modulation bit group of the current bit segment, and obtain a corresponding symbol modulation mode according to the modulation order;
a modulation symbol obtaining unit, configured to modulate the modulation bit group of the current bit segment according to the obtained symbol modulation manner, and obtain a modulation symbol;
a spread spectrum signal acquiring unit, configured to acquire the spread spectrum signal of the current bit segment according to the first target spread spectrum code sequence and the modulation symbol.
Optionally, on the basis of the foregoing technical solution, the bit segment obtaining module 310 is further configured to continue to obtain a next bit segment;
the grouping configuration module 320 is further configured to perform grouping configuration on the next bit segment according to the preset delay bit value, the preset spread spectrum bit value and the preset modulation bit value, so as to obtain a delay bit group, a spread spectrum bit group and a modulation bit group of the next bit segment;
a target spreading code sequence acquiring module 330, further configured to acquire a second matching target spreading code sequence from the spreading code sequence set according to the spreading bit group of the next bit segment;
a transmission delay acquiring module 340, further configured to acquire the spread-spectrum signal of the next bit segment according to the second target spread-spectrum code sequence and the modulation bit group of the next bit segment, and acquire the transmission delay of the next bit segment according to the delay bit group of the next bit segment and the chip duration of the spread-spectrum code sequence;
the signal transmission module 350 is further configured to transmit the spread spectrum signal of the next bit segment to the second communication device according to the transmission delay of the next bit segment.
The device can execute the information transmission method provided by the first embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided in the first embodiment of the present invention.
Example four
Fig. 4 is a block diagram of a structure of an information transmission apparatus according to a fourth embodiment of the present invention, where the apparatus specifically includes: a spread spectrum signal acquisition module 410, an inner product value acquisition module 420, a synchronization judgment module 430, a bit group acquisition module 440, a time delay bit group acquisition module 450 and a bit stream information acquisition module 460;
a spread spectrum signal obtaining module 410, configured to use a chip duration of a spread spectrum code sequence in a spread spectrum code sequence set as a receiving delay period, and obtain, according to the receiving delay period, a spread spectrum signal transmitted by a first communication device; wherein the set of spreading code sequences comprises at least one spreading code sequence;
an inner product value obtaining module 420, configured to perform inner product operation on the obtained current spreading signal and spreading code sequences in the spreading code sequence set in sequence to obtain inner product operation values, and obtain a target inner product value with a maximum module value from each inner product operation value;
a synchronization judging module 430, configured to compare the target inner product value with a preset threshold value, so as to judge whether the second communication device and the first communication device are synchronized in timing; if the target inner product value is larger than the preset threshold value, determining that the second communication device and the first communication device are in timing synchronization;
a bit group acquiring module 440, configured to acquire a third target spreading code sequence corresponding to the target inner product value if it is determined that the second communication device and the first communication device are synchronized in timing, and determine a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence;
a delay bit group acquiring module 450, configured to acquire a delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence;
a bit stream information obtaining module 460, configured to obtain bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group, and the delay bit group of the current spread spectrum signal.
According to the technical scheme disclosed by the embodiment of the invention, the chip duration of the spread spectrum code sequence in the spread spectrum code sequence set is used as a receiving delay period, the current spread spectrum signal and a corresponding third target spread spectrum code sequence are obtained, and simultaneously, the modulation bit group and the spread spectrum bit group of the current spread spectrum signal are determined according to the third target spread spectrum code sequence; acquiring a time delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence; finally, according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal, bit stream information corresponding to the current spread spectrum signal is obtained, through setting of the time delay bit group and the spread spectrum bit group, on the premise that complete information transmission is guaranteed, implicit transmission of part of information to be transmitted is achieved, channel transmission data volume is reduced, transmission efficiency is improved, further the utilization rate of time frequency resources is improved, transmission information sent by first communication equipment is truly restored at a second communication equipment end, and the accuracy of the obtained transmission information is guaranteed.
Optionally, on the basis of the above technical solution, the information transmission apparatus further includes:
and the signal abandoning module is used for abandoning the current spread spectrum signal if the second communication equipment is determined to be not timing synchronous with the first communication equipment.
The device can execute the information transmission method provided by the second embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For details of the technique not described in detail in this embodiment, reference may be made to the method provided in the second embodiment of the present invention.
EXAMPLE five
Fig. 5 is a schematic structural diagram of a communication device according to a fifth embodiment of the present invention. Fig. 5 illustrates a block diagram of an exemplary communication device 12 suitable for use in implementing embodiments of the present invention. The communication device 12 shown in fig. 5 is only an example and should not bring any limitations to the functionality and scope of use of the embodiments of the present invention.
As shown in fig. 5, the communication device 12 is in the form of a general purpose computing device. The components of communication device 12 may include, but are not limited to: one or more processors or processing units 16, a memory 28, and a bus 18 that couples various system components including the memory 28 and the processing unit 16.
Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Communication device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by communication device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. Communication device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 5, and commonly referred to as a "hard drive"). Although not shown in FIG. 5, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of embodiments of the invention as described.
The communication device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with the communication device 12, and/or with any devices (e.g., network card, modem, etc.) that enable the communication device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, the communication device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via the network adapter 20. As shown, the network adapter 20 communicates with the other modules of the communication device 12 via the bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with communication device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit 16 executes various functional applications and data processing by executing programs stored in the memory 28, for example, implementing a transmission method of information provided by any of the embodiments of the present invention. Namely: acquiring bit stream information to be transmitted, and performing segmentation processing on the bit stream information according to a preset segmentation bit value to acquire a current bit paragraph; grouping and configuring the current bit paragraph according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value so as to obtain a time delay bit group, a spread spectrum bit group and a modulation bit group of the current bit paragraph; acquiring a matched first target spreading code sequence from a spreading code sequence set according to the spreading bit group of the current bit paragraph; wherein the set of spreading code sequences comprises at least one spreading code sequence; acquiring a spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment, and acquiring a transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spreading code sequence; and transmitting the spread spectrum signal of the current bit section to a second communication device according to the transmission delay of the current bit section.
Or using the chip duration of the spreading code sequence in the spreading code sequence set as a receiving delay period, and acquiring a spreading signal transmitted by the first communication device according to the receiving delay period; wherein the set of spreading code sequences comprises at least one spreading code sequence; sequentially carrying out inner product operation on the obtained current spread spectrum signal and the spread spectrum code sequence in the spread spectrum code sequence set to obtain inner product operation values, and obtaining a target inner product value with the maximum module value from each inner product operation value; comparing the target inner product value with a preset threshold value to judge whether the second communication equipment and the first communication equipment are synchronous in timing; if the target inner product value is larger than the preset threshold value, determining that the second communication device and the first communication device are in timing synchronization; if the timing synchronization between the second communication device and the first communication device is determined, acquiring a third target spreading code sequence corresponding to the target inner product value, and determining a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence; acquiring a time delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence; and acquiring the bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal.
EXAMPLE six
The sixth embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the method for transmitting information according to any embodiment of the present invention; the method comprises the following steps:
acquiring bit stream information to be transmitted, and performing segmentation processing on the bit stream information according to a preset segmentation bit value to acquire a current bit paragraph;
grouping and configuring the current bit paragraph according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value so as to obtain a time delay bit group, a spread spectrum bit group and a modulation bit group of the current bit paragraph;
acquiring a matched first target spreading code sequence from a spreading code sequence set according to the spreading bit group of the current bit paragraph; wherein the set of spreading code sequences comprises at least one spreading code sequence;
acquiring a spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment, and acquiring a transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spreading code sequence;
and transmitting the spread spectrum signal of the current bit section to second communication equipment according to the transmission delay of the current bit section.
Or using the chip duration of the spreading code sequence in the spreading code sequence set as a receiving delay period, and acquiring a spreading signal transmitted by the first communication device according to the receiving delay period; wherein the set of spreading code sequences comprises at least one spreading code sequence;
sequentially carrying out inner product operation on the obtained current spread spectrum signal and the spread spectrum code sequence in the spread spectrum code sequence set to obtain inner product operation values, and obtaining a target inner product value with the maximum module value from each inner product operation value;
comparing the target inner product value with a preset threshold value to judge whether the second communication equipment and the first communication equipment are synchronous in timing; if the target inner product value is larger than the preset threshold value, determining that the second communication device and the first communication device are in timing synchronization;
if the timing synchronization between the second communication device and the first communication device is determined, acquiring a third target spreading code sequence corresponding to the target inner product value, and determining a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence;
acquiring a time delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence;
and acquiring the bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.

Claims (10)

1. A method for transmitting information, applied to a first communication device, includes:
acquiring bit stream information to be transmitted, and performing segmentation processing on the bit stream information according to a preset segmentation bit value to acquire a current bit paragraph;
according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value, grouping and configuring the current bit section to obtain a time delay bit group, a spread spectrum bit group and a modulation bit group of the current bit section;
acquiring a matched first target spreading code sequence from a spreading code sequence set according to the spreading bit group of the current bit paragraph; wherein the set of spreading code sequences comprises at least one spreading code sequence;
acquiring a spread spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment, and acquiring a transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spreading code sequence;
and transmitting the spread spectrum signal of the current bit section to a second communication device according to the transmission delay of the current bit section.
2. The method of claim 1, comprising: the number of spreading code sequences in the set of spreading code sequences is related to the preset spreading bit value, and the number of bits of the spreading code sequences is related to the preset modulation bit value.
3. The method of claim 2, wherein obtaining the spread-spectrum signal of the current bit segment according to the first target spreading code sequence and the modulation bit group of the current bit segment comprises:
determining a modulation order according to the modulation bit group of the current bit paragraph, and acquiring a corresponding symbol modulation mode according to the modulation order;
modulating the modulation bit group of the current bit paragraph according to the obtained symbol modulation mode, and obtaining a modulation symbol;
acquiring the spread spectrum signal of the current bit segment according to the first target spread spectrum code sequence and the modulation symbol.
4. The method according to any of claims 1-3, wherein after transmitting the spread spectrum signal of the current bit segment to a second communication device according to the transmission delay of the current bit segment, further comprising:
continuously acquiring a next bit paragraph, and performing grouping configuration on the next bit paragraph according to a preset time delay bit value, a preset spread spectrum bit value and a preset modulation bit value to acquire a time delay bit group, a spread spectrum bit group and a modulation bit group of the next bit paragraph;
acquiring a matched second target spreading code sequence in the spreading code sequence set according to the spreading bit group of the next bit paragraph;
acquiring a spread spectrum signal of the next bit segment according to the second target spreading code sequence and the modulation bit group of the next bit segment, and acquiring a transmission delay of the next bit segment according to the delay bit group of the next bit segment and the chip duration of the spreading code sequence;
and transmitting the spread spectrum signal of the next bit section to a second communication device according to the transmission delay of the next bit section.
5. A method for transmitting information, applied to a second communication device, includes:
taking the chip duration of the spread spectrum code sequence in the spread spectrum code sequence set as a receiving delay period, and acquiring a spread spectrum signal transmitted by first communication equipment according to the receiving delay period; wherein the set of spreading code sequences comprises at least one spreading code sequence;
sequentially carrying out inner product operation on the obtained current spread spectrum signal and the spread spectrum code sequence in the spread spectrum code sequence set to obtain inner product operation values, and obtaining a target inner product value with the maximum module value from each inner product operation value;
comparing the target inner product value with a preset threshold value to judge whether the second communication equipment and the first communication equipment are synchronous in timing; if the target inner product value is larger than the preset threshold value, determining that the second communication device and the first communication device are in timing synchronization;
if the timing synchronization between the second communication device and the first communication device is determined, acquiring a third target spreading code sequence corresponding to the target inner product value, and determining a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence;
acquiring a time delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence;
and acquiring the bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal.
6. The method of claim 5, wherein after determining whether the second communication device is timing synchronized with the first communication device, further comprising:
and if the second communication equipment is determined to be not timing synchronous with the first communication equipment, abandoning the current spread spectrum signal.
7. An apparatus for transmitting information, applied to a first communication device, comprising:
the bit paragraph acquisition module is used for acquiring the bit stream information to be transmitted and carrying out segmentation processing on the bit stream information according to a preset segmentation bit value so as to acquire a current bit paragraph;
a grouping configuration module, configured to perform grouping configuration on the current bit segment according to a preset delay bit value, a preset spread spectrum bit value and a preset modulation bit value, so as to obtain a delay bit group, a spread spectrum bit group and a modulation bit group of the current bit segment;
a target spreading code sequence acquisition module, configured to acquire a first target spreading code sequence matched in a spreading code sequence set according to the spreading bit group of the current bit segment; wherein the set of spreading code sequences comprises at least one spreading code sequence;
a transmission delay acquiring module, configured to acquire a spread spectrum signal of the current bit segment according to the first target spread spectrum code sequence and the modulation bit group of the current bit segment, and acquire a transmission delay of the current bit segment according to the delay bit group of the current bit segment and the chip duration of the spread spectrum code sequence;
and the signal transmission module is used for transmitting the spread spectrum signal of the current bit paragraph to second communication equipment according to the transmission delay of the current bit paragraph.
8. An apparatus for transmitting information, applied to a second communication device, comprising:
the spread spectrum signal acquisition module is used for taking the chip duration of the spread spectrum code sequence in the spread spectrum code sequence set as a receiving delay period and acquiring a spread spectrum signal transmitted by the first communication device according to the receiving delay period; wherein the set of spreading code sequences comprises at least one spreading code sequence;
an inner product value obtaining module, configured to perform inner product operation on the obtained current spreading signal and spreading code sequences in the spreading code sequence set in sequence to obtain inner product operation values, and obtain a target inner product value with a maximum modulus value from each inner product operation value;
the synchronization judging module is used for comparing the target inner product value with a preset threshold value so as to judge whether the second communication equipment and the first communication equipment are in timing synchronization; if the target inner product value is larger than the preset threshold value, determining that the second communication device and the first communication device are in timing synchronization;
a bit group acquiring module, configured to acquire a third target spreading code sequence corresponding to the target inner product value if it is determined that the second communication device is synchronized with the first communication device in timing, and determine a modulation bit group and a spreading bit group of the current spreading signal according to the third target spreading code sequence;
a delay bit group acquiring module, configured to acquire a delay bit group of the current spread spectrum signal according to the receiving time of the current spread spectrum signal and the chip duration of the spread spectrum code sequence;
and the bit stream information acquisition module is used for acquiring the bit stream information corresponding to the current spread spectrum signal according to the modulation bit group, the spread spectrum bit group and the time delay bit group of the current spread spectrum signal.
9. A communication device, characterized in that the communication device comprises:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method of transmitting information as claimed in any one of claims 1-4, or a method of transmitting information as claimed in claim 5 or 6.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a method of transmitting information according to any one of claims 1 to 4, or a method of transmitting information according to claim 5 or 6.
CN202110114640.5A 2021-01-26 2021-01-26 Information transmission method and device, communication equipment and storage medium Active CN112929904B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110114640.5A CN112929904B (en) 2021-01-26 2021-01-26 Information transmission method and device, communication equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110114640.5A CN112929904B (en) 2021-01-26 2021-01-26 Information transmission method and device, communication equipment and storage medium

Publications (2)

Publication Number Publication Date
CN112929904A CN112929904A (en) 2021-06-08
CN112929904B true CN112929904B (en) 2022-10-21

Family

ID=76167378

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110114640.5A Active CN112929904B (en) 2021-01-26 2021-01-26 Information transmission method and device, communication equipment and storage medium

Country Status (1)

Country Link
CN (1) CN112929904B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114745050A (en) * 2022-03-08 2022-07-12 浙江威星智能仪表股份有限公司 Long data processing method based on far infrared data transmission system
CN116405055B (en) * 2023-06-07 2023-08-29 中国人民解放军国防科技大学 Spread spectrum communication method, system and related device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109936393A (en) * 2019-02-28 2019-06-25 北京航空航天大学 A kind of synchronous method and device suitable for extremely low acceptance rate
CN111294082A (en) * 2020-02-10 2020-06-16 西安电子科技大学 Spread spectrum-based parallel transmission OFDM communication method and system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10879952B2 (en) * 2018-04-18 2020-12-29 Huawei Technologies Co., Ltd. Apparatus and receiver for performing synchronization in analog spread spectrum systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109936393A (en) * 2019-02-28 2019-06-25 北京航空航天大学 A kind of synchronous method and device suitable for extremely low acceptance rate
CN111294082A (en) * 2020-02-10 2020-06-16 西安电子科技大学 Spread spectrum-based parallel transmission OFDM communication method and system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Delay diversity for direct sequence spread spectrum system to reduce transmitting power in Rayleigh flat-fading channel;Stevan Berber等;《2010 16th Asia-Pacific Conference on Communications (APCC)》;20101103;全文 *
新的扩频通信调制方法;康家方等;《通信学报》;20130525(第05期);全文 *

Also Published As

Publication number Publication date
CN112929904A (en) 2021-06-08

Similar Documents

Publication Publication Date Title
CN112713912B (en) Spread spectrum index modulation and demodulation communication method, transmitter, receiver and storage medium
US8477827B2 (en) Spread-spectrum coding of data bursts
US7907512B1 (en) OFDM and SC-OFDM QLM
US20060098752A1 (en) Apparatus and method for transmitting a preamble and searching a cell in an OFDMA system
KR101004101B1 (en) Apparatus and method for IEEE 802.15.4 LR-WPAN BPSK receiver
CN112929904B (en) Information transmission method and device, communication equipment and storage medium
US5917829A (en) Asynchronous CDMA decorrelating detector
EP1755299A2 (en) Transmitting/receiving apparatus and method for cell search in a broadband wireless communication system using multiple carriers
EP3200368A1 (en) Multi-user code division multiple access communication method, and corresponding transmitter and receiver
CN111565161A (en) Baseband transmitter, baseband receiver, modulation and demodulation system and terminal
CN111294082B (en) Spread spectrum-based parallel transmission OFDM communication method and system
CN113300993B (en) Transmission method for bit field superposition pseudo-random sequence and sparse cascade coding
Carroll Chaos for low probability of detection communications
CN113141195A (en) Demodulation method for dispreading in direct sequence spread spectrum system and storage medium
CN112671430B (en) Code division multiplexing spread spectrum index modulation and demodulation communication method, transmitter and receiver
CN112788631B (en) Information transmission method and device, communication equipment and storage medium
CN112202694B (en) Estimation method and system of frequency offset value based on signal reconstruction
WO2018068541A1 (en) Overlapped multiplexing-based decoding method and device, and modulation and demodulation method and system
CN111600626A (en) Signal-to-noise ratio estimation method and device, electronic equipment and storage medium
CN115022128A (en) Parity block FFT-based CSK modulation efficient demodulation algorithm
CN110278041B (en) Differential chaos keying modulation and demodulation method, device and system and readable storage medium
US7142502B2 (en) Technique for continuous OFDM demodulation
CN116405055B (en) Spread spectrum communication method, system and related device
HISHINAGA et al. The synchronization acquisition of M-ary/SS communication system with differential detector
CN113595585B (en) M-element cyclic shift Chirp spread spectrum mobile underwater acoustic communication method, device and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant