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CN108347258B - KS-CSS modulation method - Google Patents

KS-CSS modulation method Download PDF

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CN108347258B
CN108347258B CN201810103885.6A CN201810103885A CN108347258B CN 108347258 B CN108347258 B CN 108347258B CN 201810103885 A CN201810103885 A CN 201810103885A CN 108347258 B CN108347258 B CN 108347258B
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pseudocode
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CN108347258A (en
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冯永新
刘芳
周帆
钱博
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Shenyang Ligong University
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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits

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Abstract

A KS-CSS modulation method belongs to the technical field of spread spectrum communication. Considering the problems of limited transmission rate, low frequency spectrum utilization rate and the like of the existing modulation mechanism, from the perspective of composite dimensionality, on the premise that a one-dimensional data spreading mechanism and transmission power are not changed, two-dimensional data information is introduced, a spreading pseudo code is selected through a data mapping mechanism, and meanwhile, two-dimensional data information transmission is realized; and the modulation order K is flexibly configured by utilizing the transmission rate relation between one dimension and two dimensions and the data application requirement, thereby establishing a K-order composite frequency-spreading modulation mechanism. The method dynamically updates the spread spectrum pseudo code through a two-dimensional data mapping mechanism, improves the confidentiality of one-dimensional data, and transmits two-dimensional data information under the conditions of not introducing additional power and not occupying additional frequency bands. The method improves the data transmission rate and the frequency band utilization rate, can achieve the aim of covert communication, and can be applied to a used spread spectrum communication system.

Description

一种KS-CSS调制方法A KS-CSS Modulation Method

技术领域technical field

本发明涉及扩频通信技术领域，尤其是涉及一种KS-CSS扩频调制方法。The invention relates to the technical field of spread spectrum communication, in particular to a KS-CSS spread spectrum modulation method.

背景技术Background technique

直接序列扩频凭借其在保密、抗噪、抗干扰、高精测量等方面的优势，逐渐成为移动通信、卫星导航等领域的重要支撑。目前直接序列扩频通信中常采用的调制方法主要有BPSK、QPSK、BOC等，虽然此系列调制方法在保密性及抗干扰能力方面具有明显优势，但是考虑到现有调制机制的传输速率受限、频谱利用率低等问题，为此，在未引入附加功率、未占用额外频带条件下，能够进行二维数据信息传输的调制机制成为了未来发展趋势和新方向。With its advantages in confidentiality, anti-noise, anti-jamming, and high-precision measurement, direct sequence spread spectrum has gradually become an important support in the fields of mobile communication and satellite navigation. At present, the modulation methods commonly used in direct sequence spread spectrum communication mainly include BPSK, QPSK, BOC, etc. Although this series of modulation methods have obvious advantages in terms of confidentiality and anti-interference ability, considering the limited transmission rate of the existing modulation mechanism, Due to low spectrum utilization and other issues, a modulation mechanism capable of transmitting two-dimensional data information without introducing additional power and occupying additional frequency bands has become a future development trend and a new direction.

发明内容SUMMARY OF THE INVENTION

本发明的目的是提供一种KS-CSS调制方法。本发明从复合维度角度出发，在一维数据扩频机理及发射功率不变的前提下，引入二维数据信息，通过数据映射机制选取扩频伪码，同时实现二维数据信息传输；并利用一维与二维的传输率关系以及数据应用需求，灵活配置调制阶数K，从而建立K阶复合扩频(KS-CSS，K Step-Complex Spread Spectrum)调制方法。该方法提高了数据传输速率及频带利用率，适用于所有的扩频通信系统。The purpose of the present invention is to provide a KS-CSS modulation method. From the perspective of composite dimensions, the invention introduces two-dimensional data information on the premise of one-dimensional data spreading mechanism and transmit power unchanged, selects spread spectrum pseudocode through data mapping mechanism, and realizes two-dimensional data information transmission at the same time; The relationship between one-dimensional and two-dimensional transmission rates and data application requirements, the modulation order K is flexibly configured, so as to establish a K-order composite spread spectrum (KS-CSS, K Step-Complex Spread Spectrum) modulation method. The method improves the data transmission rate and the frequency band utilization rate, and is suitable for all spread spectrum communication systems.

采用的技术方案是：The technical solutions adopted are:

一种KS-CSS调制方法，其特征在于，包括下述步骤：A KS-CSS modulation method, comprising the steps of:

步骤1：首先设置参数，设定R1为一维信息速率，R2为二维信息基础速率,一维与二维的信息周期为1s；一维信息D1(n)和二维信息D2(n)待传输。Step 1: First set the parameters, set R 1 to be the one-dimensional information rate, R 2 to be the basic rate of two-dimensional information, and the information period of one-dimensional and two-dimensional information is 1s; one-dimensional information D 1 (n) and two-dimensional information D 2 (n) to be transmitted.

步骤2：进行M1、M2模式配置，配置规则为：定义M为模式控制系数组，由M[M1 M2]表示，定义M1为自适应或主动模式的选择参数，M2为主动模式下的节能或高效模式的选择参数。e为增设系数，其是在主动高效模式下，用户控制伪码组数的自定义增量。当M1＝0时为自适应模式，此时M2及e不起作用；当M2＝1时为主动模式，此时M2起作用，当M2＝0时为主动节能模式，且e不起作用；当M2＝1时为主动高效模式，此时e起作用。Step 2: Perform M 1 , M 2 mode configuration, the configuration rule is: define M as a mode control coefficient group, represented by M[M 1 M 2 ], define M 1 as the selection parameter of the adaptive or active mode, and M 2 as Selection parameter for energy-saving or high-efficiency mode in active mode. e is an additional coefficient, which is a user-defined increment of the number of pseudo-code groups controlled by the user in the active high-efficiency mode. When M 1 =0, it is adaptive mode, and M 2 and e do not work at this time; when M 2 =1, it is active mode, and M 2 works at this time; when M 2 =0, it is active energy-saving mode, and e does not work; when M 2 =1, it is active high-efficiency mode, and e works at this time.

步骤3：调制阶数k计算，k值是瞬时二维与一维的信息传输率比值，计算规则为：Step 3: Calculate the modulation order k. The value of k is the ratio of instantaneous two-dimensional and one-dimensional information transmission rates. The calculation rule is:

当M1＝0时，

Figure BDA0001567238180000021
其中符号[]↑为向上取整函数；When M 1 =0,
Figure BDA0001567238180000021
The symbol []↑ is the round-up function;

当M1＝1，且M2＝0时，其中符号[]↓为向下取整函数；When M 1 =1, and M 2 =0, The symbol []↓ is the round-down function;

当M1＝1，且M2＝1时，

Figure BDA0001567238180000023
When M 1 =1, and M 2 =1,
Figure BDA0001567238180000023

步骤4：伪码组数N计算，N是扩频伪码集合中的有效伪码数，计算规则为：Step 4: Calculate the number of pseudocode groups N, where N is the number of valid pseudocodes in the spread spectrum pseudocode set, and the calculation rule is:

当M1＝0时，N＝2k；When M 1 =0, N=2 k ;

当M1＝1，且M2＝0时，N＝2k；When M 1 =1, and M 2 =0, N=2 k ;

当M1＝1，且M2＝1时，N＝2(k+e)。When M 1 =1, and M 2 =1, N=2 (k+e) .

步骤5：转换时间T计算，表明每T时间更换一次扩频伪码，计算规则为：Step 5: Calculate the conversion time T, indicating that the spread spectrum pseudocode is replaced every T time, and the calculation rule is:

当M1＝0时，

Figure BDA0001567238180000024
When M 1 =0,
Figure BDA0001567238180000024

当M1＝1，且M2＝0时，

Figure BDA0001567238180000025
When M 1 =1, and M 2 =0,
Figure BDA0001567238180000025

当M1＝1，且M2＝1时，

Figure BDA0001567238180000026
When M 1 =1, and M 2 =1,
Figure BDA0001567238180000026

步骤6：依据k和T的值，并利用二维信息D2(n)进行待传码片处理。Step 6: According to the values of k and T, and use the two-dimensional information D 2 (n) to process the chips to be transmitted.

步骤7：依据N值，并由待传的信息码片进行码集映射，从而得到

Figure BDA0001567238180000031
其中，εj∈{1Λ N}，εj是在1～N间选择。εj的配置规则为：j是从第一组k到第
Figure BDA0001567238180000033
组k的伪码顺序取值。其表明D2(n)中每k位的持续时间为T，即每T时间传k位信息，每T时间利用下一个k位从伪码集中选伪码，共需要
Figure BDA0001567238180000034
次选择。当j已经等于
Figure BDA0001567238180000035
时，不再选择伪码，即T不起作用。Step 7: According to the value of N, code set mapping is performed by the information chips to be transmitted, so as to obtain
Figure BDA0001567238180000031
Among them, ε j ∈{1Λ N}, ε j is selected from 1 to N. The configuration rules of εj are: j is from the first group k to the first
Figure BDA0001567238180000033
Pseudocode order values for group k. It shows that the duration of each k bits in D 2 (n) is T, that is, k bits of information are transmitted every T time, and the next k bits are used to select pseudocodes from the pseudocode set every T time.
Figure BDA0001567238180000034
selection. when j is already equal to
Figure BDA0001567238180000035
, the pseudocode is no longer selected, i.e. T does not work.

步骤8：一维信息D1(n)与二维信息映射的伪码

Figure BDA0001567238180000036
进行模二和运算，并通过基带处理，进一步进行载波调制，从而得到KS-CSS调制信号S(n)，S(n)表示为其中n为离散序列值，ω0为信号调制载波的频率，θ为调制载波的相位。Step 8: Pseudocode for mapping one-dimensional information D 1 (n) to two-dimensional information
Figure BDA0001567238180000036
Perform modulo-two sum operation, and further perform carrier modulation through baseband processing to obtain KS-CSS modulation signal S(n), S(n) is expressed as where n is the discrete sequence value, ω 0 is the frequency of the signal modulating carrier, and θ is the phase of the modulating carrier.

其优点在于：本发明从复合维度角度出发，在一维数据扩频机理及发射功率不变的前提下，引入二维数据信息，通过数据映射机制选取扩频伪码，同时实现二维数据信息传输；并利用一维与二维的传输率关系以及数据应用需求，灵活配置调制阶数K，从而建立K阶复合扩频(KS-CSS，K Step-Complex Spread Spectrum)调制方法。该方法提高了数据传输速率及频带利用率，适用于所有的扩频通信系统。The advantages are: from the perspective of composite dimensions, the present invention introduces two-dimensional data information on the premise of the one-dimensional data spreading mechanism and transmission power unchanged, selects the spread spectrum pseudocode through the data mapping mechanism, and realizes the two-dimensional data information at the same time. and use the one-dimensional and two-dimensional transmission rate relationship and data application requirements to flexibly configure the modulation order K, thereby establishing a K-order composite spread spectrum (KS-CSS, K Step-Complex Spread Spectrum) modulation method. The method improves the data transmission rate and the frequency band utilization rate, and is suitable for all spread spectrum communication systems.

附图说明Description of drawings

图1是本发明方法的原理图。Figure 1 is a schematic diagram of the method of the present invention.

具体实施方式Detailed ways

一种KS-CSS调制方法，其特征在于，包括下述步骤：A KS-CSS modulation method, comprising the steps of:

步骤1：首先设置参数，设定R1为一维信息速率，R2为二维信息基础速率,一维与二维的信息周期为1s；一维信息D1(n)和二维信息D2(n)待传输。Step 1: First set the parameters, set R 1 to be the one-dimensional information rate, R 2 to be the basic rate of two-dimensional information, and the information period of one-dimensional and two-dimensional information is 1s; one-dimensional information D 1 (n) and two-dimensional information D 2 (n) to be transmitted.

步骤2：进行M1、M2模式配置，配置规则为：定义M为模式控制系数组，由M[M1 M2]表示，定义M1为自适应或主动模式的选择参数，M2为主动模式下的节能或高效模式的选择参数。e为增设系数，其是在主动高效模式下，用户控制伪码组数的自定义增量。当M1＝0时为自适应模式，此时M2及e不起作用；当M2＝1时为主动模式，此时M2起作用，当M2＝0时为主动节能模式，且e不起作用；当M2＝1时为主动高效模式，此时e起作用。Step 2: Perform M 1 , M 2 mode configuration, the configuration rule is: define M as a mode control coefficient group, represented by M[M 1 M 2 ], define M 1 as the selection parameter of the adaptive or active mode, and M 2 as Selection parameter for energy-saving or high-efficiency mode in active mode. e is an additional coefficient, which is a user-defined increment of the number of pseudo-code groups controlled by the user in the active high-efficiency mode. When M 1 =0, it is adaptive mode, and M 2 and e do not work at this time; when M 2 =1, it is active mode, and M 2 works at this time; when M 2 =0, it is active energy-saving mode, and e does not work; when M 2 =1, it is active high-efficiency mode, and e works at this time.

步骤3：调制阶数k计算，k值是瞬时二维与一维的信息传输率比值，计算规则为：Step 3: Calculate the modulation order k. The value of k is the ratio of instantaneous two-dimensional and one-dimensional information transmission rates. The calculation rule is:

当M1＝0时，

Figure BDA0001567238180000041
其中符号[]↑为向上取整函数；When M 1 =0,
Figure BDA0001567238180000041
The symbol []↑ is the round-up function;

当M1＝1，且M2＝0时，其中符号[]↓为向下取整函数；When M 1 =1, and M 2 =0, The symbol []↓ is the round-down function;

当M1＝1，且M2＝1时，

Figure BDA0001567238180000043
When M 1 =1, and M 2 =1,
Figure BDA0001567238180000043

步骤4：伪码组数N计算，N是扩频伪码集合中的有效伪码数，计算规则为：Step 4: Calculate the number of pseudocode groups N, where N is the number of valid pseudocodes in the spread spectrum pseudocode set, and the calculation rule is:

当M1＝0时，N＝2k；When M 1 =0, N=2 k ;

当M1＝1，且M2＝0时，N＝2k；When M 1 =1, and M 2 =0, N=2 k ;

当M1＝1，且M2＝1时，N＝2(k+e)。When M 1 =1, and M 2 =1, N=2 (k+e) .

步骤5：转换时间T计算，表明每T时间更换一次扩频伪码，计算规则为：Step 5: Calculate the conversion time T, indicating that the spread spectrum pseudocode is replaced every T time, and the calculation rule is:

当M1＝0时，

Figure BDA0001567238180000044
When M 1 =0,
Figure BDA0001567238180000044

当M1＝1，且M2＝0时，

Figure BDA0001567238180000045
When M 1 =1, and M 2 =0,
Figure BDA0001567238180000045

当M1＝1，且M2＝1时，

Figure BDA0001567238180000046
When M 1 =1, and M 2 =1,
Figure BDA0001567238180000046

步骤6：依据k和T的值，并利用二维信息D2(n)进行待传码片处理。Step 6: According to the values of k and T, and use the two-dimensional information D 2 (n) to process the chips to be transmitted.

步骤7：依据N值，并由待传的信息码片进行码集映射，从而得到

Figure BDA0001567238180000051
其中，εj∈{1Λ N}，εj是在1～N间选择。εj的配置规则为：
Figure BDA0001567238180000052
j是从第一组k到第
Figure BDA0001567238180000053
组k的伪码顺序取值。其表明D2(n)中每k位的持续时间为T，即每T时间传k位信息，每T时间利用下一个k位从伪码集中选伪码，共需要
Figure BDA0001567238180000054
次选择。当j已经等于
Figure BDA0001567238180000055
时，不再选择伪码，即T不起作用。Step 7: According to the value of N, code set mapping is performed by the information chips to be transmitted, so as to obtain
Figure BDA0001567238180000051
Among them, ε j ∈{1Λ N}, ε j is selected from 1 to N. The configuration rules of εj are:
Figure BDA0001567238180000052
j is from the first group k to the first
Figure BDA0001567238180000053
Pseudocode order values for group k. It shows that the duration of each k bits in D 2 (n) is T, that is, k bits of information are transmitted every T time, and the next k bits are used to select pseudocodes from the pseudocode set every T time.
Figure BDA0001567238180000054
selection. when j is already equal to
Figure BDA0001567238180000055
, the pseudocode is no longer selected, i.e. T does not work.

步骤8：一维信息D1(n)与二维信息映射的伪码

Figure BDA0001567238180000056
进行模二和运算，并通过基带处理，进一步进行载波调制，从而得到KS-CSS调制信号S(n)，S(n)表示为
Figure BDA0001567238180000057
其中n为离散序列值，ω0为信号调制载波的频率，θ为调制载波的相位。Step 8: Pseudocode for mapping one-dimensional information D 1 (n) to two-dimensional information
Figure BDA0001567238180000056
Perform modulo-two sum operation, and further perform carrier modulation through baseband processing to obtain KS-CSS modulation signal S(n), S(n) is expressed as
Figure BDA0001567238180000057
where n is the discrete sequence value, ω 0 is the frequency of the signal modulating carrier, and θ is the phase of the modulating carrier.

Claims (1)

1.一种KS-CSS调制方法，其特征在于，包括下述步骤：1. a KS-CSS modulation method, is characterized in that, comprises the following steps: 步骤1：首先设置参数，设定R1为一维信息速率，R2为二维信息基础速率,一维与二维的信息周期为1s；一维信息D1(n)和二维信息D2(n)待传输；Step 1: First set the parameters, set R 1 to be the one-dimensional information rate, R 2 to be the basic rate of two-dimensional information, and the information period of one-dimensional and two-dimensional information is 1s; one-dimensional information D 1 (n) and two-dimensional information D 2 (n) to be transmitted; 步骤2：进行M1、M2模式配置，配置规则为：定义M为模式控制系数组，由M[M1 M2]表示，定义M1为自适应或主动模式的选择参数，M2为主动模式下的节能或高效模式的选择参数；e为增设系数，其是在主动高效模式下，用户控制伪码组数的自定义增量；当M1＝0时为自适应模式，此时M2及e不起作用；当M2＝1时为主动模式，此时M2起作用，当M2＝0时为主动节能模式，且e不起作用；当M2＝1时为主动高效模式，此时e起作用；Step 2: Perform M 1 , M 2 mode configuration, the configuration rule is: define M as a mode control coefficient group, represented by M[M 1 M 2 ], define M 1 as the selection parameter of the adaptive or active mode, and M 2 as The selection parameter of energy-saving or high-efficiency mode in active mode; e is the additional coefficient, which is the user-defined increment of the number of pseudo-code groups controlled by the user in active high-efficiency mode; when M 1 =0, it is adaptive mode, at this time M 2 and e do not work; when M 2 =1, it is active mode, and M 2 works at this time; when M 2 =0, it is active energy-saving mode, and e does not work; when M 2 =1, it is active Efficient mode, at this time e works; 步骤3：调制阶数k计算，k值是瞬时二维与一维的信息传输率比值，计算规则为：Step 3: Calculate the modulation order k. The value of k is the ratio of instantaneous two-dimensional and one-dimensional information transmission rates. The calculation rule is: 当M1＝0时，其中符号[]↑为向上取整函数；When M 1 =0, The symbol []↑ is the round-up function; 当M1＝1，且M2＝0时，
Figure FDA0002232043010000012
其中符号[]↓为向下取整函数；When M 1 =1, and M 2 =0,
Figure FDA0002232043010000012
The symbol []↓ is the round-down function; 当M1＝1，且M2＝1时，
Figure FDA0002232043010000013
When M 1 =1, and M 2 =1,
Figure FDA0002232043010000013
 步骤4：伪码组数N计算，N是扩频伪码集合中的有效伪码数，计算规则为：Step 4: Calculate the number of pseudocode groups N, where N is the number of valid pseudocodes in the spread spectrum pseudocode set, and the calculation rule is: 当M1＝0时，N＝2k；When M 1 =0, N=2 k ; 当M1＝1，且M2＝0时，N＝2k；When M 1 =1, and M 2 =0, N=2 k ; 当M1＝1，且M2＝1时，N＝2(k+e)；When M 1 =1, and M 2 =1, N=2 (k+e) ; 步骤5：转换时间T计算，表明每T时间更换一次扩频伪码，计算规则为：Step 5: Calculate the conversion time T, indicating that the spread spectrum pseudocode is replaced every T time, and the calculation rule is: 当M1＝0时，
Figure FDA0002232043010000021
When M 1 =0,
Figure FDA0002232043010000021
 当M1＝1，且M2＝0时，
Figure FDA0002232043010000022
When M 1 =1, and M 2 =0,
Figure FDA0002232043010000022
 当M1＝1，且M2＝1时，
Figure FDA0002232043010000023
When M 1 =1, and M 2 =1,
Figure FDA0002232043010000023
 步骤6：依据k和T的值，并利用二维信息D2(n)进行待传码片处理；Step 6: According to the values of k and T, and use the two-dimensional information D 2 (n) to process the chips to be transmitted; 步骤7：依据N值，并由待传的信息码片进行码集映射，从而得到
Figure FDA0002232043010000024
其中，εj∈{1…N}，εj是在1～N间选择；εj的配置规则为：
Figure FDA0002232043010000025
j是从第一组k到第
Figure FDA0002232043010000026
组k的伪码顺序取值；其表明D2(n)中每k位的持续时间为T，即每T时间传k位信息，每T时间利用下一个k位从伪码集中选伪码，共需要
Figure FDA0002232043010000027
次选择；当j已经等于时，不再选择伪码，即T不起作用；Step 7: According to the value of N, code set mapping is performed by the information chips to be transmitted, so as to obtain
Figure FDA0002232043010000024
Among them, ε j ∈{1…N}, ε j is selected from 1 to N; the configuration rules of ε j are:
Figure FDA0002232043010000025
j is from the first group k to the first
Figure FDA0002232043010000026
The pseudocodes of group k take values sequentially; it indicates that the duration of each k bit in D 2 (n) is T, that is, k bits of information are transmitted every T time, and the next k bits are used to select pseudocodes from the pseudocode set every T time , a total of
Figure FDA0002232043010000027
selection; when j is already equal to When , the pseudocode is no longer selected, that is, T does not work; 步骤8：一维信息D1(n)与二维信息映射的伪码
Figure FDA0002232043010000029
进行模二和运算，并通过基带处理，进一步进行载波调制，从而得到KS-CSS调制信号S(n)，S(n)表示为其中n为离散序列值，ω0为信号调制载波的频率，θ为调制载波的相位；Step 8: Pseudocode for mapping one-dimensional information D 1 (n) to two-dimensional information
Figure FDA0002232043010000029
Perform modulo-two sum operation, and further perform carrier modulation through baseband processing to obtain KS-CSS modulation signal S(n), S(n) is expressed as where n is the discrete sequence value, ω 0 is the frequency of the signal modulating carrier, and θ is the phase of the modulating carrier; KS-CSS：K Step-Complex Spread Spectrum为K阶复合扩频。KS-CSS: K Step-Complex Spread Spectrum is K-order composite spread spectrum.
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