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Vector signal analysis device and method

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CN104320207A
CN104320207A CN 201410568000 CN201410568000A CN104320207A CN 104320207 A CN104320207 A CN 104320207A CN 201410568000 CN201410568000 CN 201410568000 CN 201410568000 A CN201410568000 A CN 201410568000A CN 104320207 A CN104320207 A CN 104320207A
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signal
vector
data
analysis
module
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CN 201410568000
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CN104320207B (en )
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周钦山
王峰
张超
韩翔
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中国电子科技集团公司第四十一研究所
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Abstract

The invention provides a vector signal analysis device. The vector signal analysis device is characterized in that an ADC (analog to digital converter) module performs A/D quantification on a received intermediate frequency signal, an I/Q (in-phase/quadrature) convertor performs I/Q conversion on a digital signal output by the ADC module so as to obtain base band I/Q data, an integer extraction module receives an I/Q signal output by the I/Q convertor, and extracts the I/Q signal after down conversion by integral multiples, a decimal fraction extraction module converts data velocity of I/Q data output by the integer extraction module into code element velocity which is an integral multiple of the data velocity, and further can perform decimal fraction multiple data velocity extraction conversion on an I/Q data file, and a vector demodulation analysis module performs subsequent vector demodulation analysis on I/Q data output by the decimal fraction extraction module. The vector signal analysis device can perform the flexible and complete vector demodulation analysis on digital modulation signals, uses the fixed velocity to perform A/D sampling, performs the I/Q conversion and integral multiple sampling rate conversion in a programmable device, and reduces design difficulty of A/D sampling of an existing vector signal analyzer and programmable hardware.

Description

一种矢量信号分析装置及方法 A signal analysis apparatus and method for vector

技术领域 FIELD

[0001] 本发明涉及测试技术领域,特别涉及一种矢量信号分析装置,还涉及一种矢量信号分析方法。 [0001] The present invention relates to testing technique, and more particularly, to a vector signal analyzer, also relates to a vector signal analysis method.

背景技术 Background technique

[0002] 数字调制信号具有信息容量大、抗干扰和保密性好等优点,在卫星通信、广播电视、通信对抗等通信系统中被广泛使用。 [0002] modulated digital signal having a large information capacity, interference and good security, it is widely used in satellite communications, television broadcasting, communication countermeasure peer communications system. 对数字调制信号的码元信息和调制质量进行精确衡量是数字通信系统应用的重要前提,矢量信号分析仪可实现码元恢复和调制质量测量,以及功率、频率等其它参数的测试,为数字通信系统提供测试保障。 Of the symbol information and the modulation quality of the digital modulation signal accurately measure an important prerequisite for the digital communication system applications, a vector signal analyzer may be implemented symbol recovery and test other parameters modulation quality measurement, and the power, frequency, digital communication The system provides test support.

[0003] 在完成信号的变频处理后,矢量信号分析仪需要可编程硬件设备和驻机软件配合完成多种调制格式以及不同码元速率数字调制信号的矢量解调分析。 [0003] After completion of the conversion processing signals, a vector signal analyzer need in programmable hardware device and software perform a variety of complex demodulation vector modulation formats and different symbol rate of the digital modulation signal. 现有的矢量信号分析仪在可编程硬件设备中完成1/0变换、小数倍采样率变换、甚至矢量解调等过程,编程设计复杂度高;并且驻机软件无法进行非整数倍码元速率1/0数据文件的回放分析,软件灵活性和通用性差。 Conventional vector signal analyzer done in programmable hardware devices 1/0 conversion, a small multiple of the sampling rate conversion, or even during, the programmed high complexity demodulation vector; in software and can not be a non-integer multiple of a symbol playback rate 1/0 data file analysis, software flexibility and versatility poor.

[0004] 如图1所示,现有的矢量信号分析实现方法一般有两种: [0004] As shown in FIG. 1, a conventional vector signal analysis methods are generally implemented in two ways:

[0005] 一是采用可变高采样率进行八/0转换,采样速率为码元速率的整数倍,经过1/0变换、整数倍抽取滤波后,进行矢量解调分析。 [0005] First, using a variable sampling rate eight high / 0 conversion, the sampling rate is an integer multiple of the symbol rate of 1/0 after transformation, an integral multiple of the decimation filtering, demodulation vector. 该方法要求采样时钟是码元速率的整数倍,对采样时钟发生器的精度及范围要求很高,实现比较困难; This method requires that the sampling clock is an integer multiple of the symbol rate, accuracy and range of the sampling clock generator demanding, difficult to realize;

[0006] 二是采用固定采样率进行八/0变换,在可编程器件中进行1/0变换、小数倍抽取处理得到整数倍码元速率的1/0数据,在后续硬件或软件模块中进行矢量解调分析。 [0006] Second, using a fixed sampling rate eight / 0 conversion, for 1/0 conversion in a programmable device, the extraction process to obtain a small multiple of an integer multiple of the data symbol rate of 1/0 symbol, in a subsequent hardware or software modules vector demodulation.

[0007] 上述第一种实现方法中,矢量信号分析仪驻机软件获得的数据是矢量解调后的结果,原始采样数据的时频域信息被丢弃,数据信息利用率不高,导致结果分析角度不够全面;此外,采用可变高采样率八/0实现起来非常困难。 [0007] The first implementation described above, the data in the vector signal analyzer software is the result obtained by the demodulation vector, when the original sampling frequency domain information data is dropped, data utilization is not high, resulting in the analysis results angle is not comprehensive enough; in addition, the use of variable sampling rate is very difficult eight high / 0 to achieve them.

[0008] 第二种实现方法中,小数倍抽取处理在可编程器件中,编程复杂度高;并且驻机软件缺少小数倍采样率变换功能,仅能实现整数倍采样率1/0数据的解调分析,无法回放分析其它系统保存的非整数倍码元速率的1/0数据,软件兼容性差、使用局限性大。 [0008] In a second implementation, a small multiple of the extraction processing in a programmable device, programming complexity is high; and in the lack of software small multiple of the sampling rate conversion function, can only achieve an integral multiple of the data sampling rate 1/0 demodulation analysis, the analysis can not be played 1/0 large data storage systems of other non-integer multiple of the symbol rate, software compatibility is poor, use limitations.

发明内容 SUMMARY

[0009] 为解决现有的矢量信号分析实现方法的上述缺点,本发明提出一种矢量信号分析装置及方法。 [0009] In order to solve the above-described conventional drawbacks vector signal analysis implementation of the method, the present invention provides a vector signal analysis apparatus and method.

[0010] 本发明的技术方案是这样实现的: [0010] aspect of the present invention is implemented as follows:

[0011] 一种矢量信号分析装置,包括:仙模块、1/0变换器、整数抽取模块、小数抽取模块和矢量解调分析模块; [0011] A vector signal analysis apparatus, comprising: a module cents, 1/0 converter module integer extraction, fractional extraction module and a vector demodulation module;

[0012] ^00模块对接收到的中频信号进行八/0量化; [0012] ^ IF signal 00 is received eight modules / quantization 0;

[0013] 1/0变换器对八IX:模块输出的数字信号进行1/0变换得到基带1/0数据; [0013] 1/0 converter for eight IX: digital signal output by the block transform 1/0 1/0 baseband data;

[0014] 整数抽取模块接收1/0变换器输出的1/0信号,对下变频后的1/0信号进行整数倍抽取,整数抽取模块采用多级¢:1(:滤波器和半带滤波器级联的方式,每级¢:1(:滤波器和每级半带滤波器前均有选择器,¢:1(:滤波器放在抽取级联的前端,半带滤波器在¢:1(:滤波器的后端; [0014] integer decimation module receives 1/0 1/0 converter output signal, 1/0 of the down-converted signal multiplied by an integer extraction, multistage extraction module integer ¢: 1 (: half-band filter and the filter cascade fashion, each stage ¢: 1 (: selecting both the front and the half-band filter of each filter stage, ¢: 1 (: decimation filter placed in the front end of the cascade, the half-band filter ¢: 1 (: the rear end of the filter;

[0015] 小数抽取模块将整数抽取模块输出的1/0数据的数据速率转化为整数倍的码元速率,还可以对1/0数据文件进行小数倍数据速率抽取变换; Data Rate [0015] The extraction module decimal integer 1/0 decimation module output data into an integer multiple of the symbol rate, may also be a small multiple of the data rate of 1/0 for converting the data file extraction;

[0016] 矢量解调分析模块对上述小数抽取模块输出的1/0数据进行后续的矢量解调分析。 [0016] The vector demodulation module 1/0 fractional extraction module data of the output vector for subsequent demodulation.

[0017] 可选地,所述八IX:模块采用固定采样率,采样率取值为10册12的整数倍。 [0017] Alternatively, the eight IX: module fixed sampling rate, the sampling rate is an integer multiple of the value of 10 12.

[0018] 可选地,所述1/0变换器接收所述八IX:模块输出的中频信号,经两个相乘器所构成的混频器后,将输入的数字信号和数字本振所产生的正交正弦信号相乘,相乘结果为基带1/0数据。 [0018] Alternatively, the 1/0 converter receives the eight IX: intermediate frequency signal output module, the mixer is composed of two multiplied after the input digital signal and the digital local oscillator quadrature sinusoidal signal generated by multiplying the multiplication result to a baseband data 1/0.

[0019] 可选地,所述整数抽取模块的抽取因子以1、2、5、10固定档位步进。 [0019] Alternatively, the extraction module integer decimation factor to 1,2,5,10 fixed gear stepping.

[0020] 可选地,所述(:1(:滤波器采用5级级联的方式,半带滤波器采用3级级联的方式。 [0020] Alternatively, the (: 1 (: a filter using five cascaded manner, half-band filter using three cascaded manner.

[0021] 可选地,小数抽取模块采用81%内插滤波进行小数倍抽取,得到整数倍码元速率的1/0数据。 [0021] Alternatively, the fractional extraction module using the interpolation filter of 81% small-extracted several times, to obtain an integral multiple of 1/0 the data symbol rate.

[0022] 可选地,矢量解调分析模块的信号分析流程包括匹配滤波、矢量解调以及调制质量分析。 [0022] Alternatively, the signal analysis process of the analysis module comprises a demodulation vector matched filtering, demodulation and modulation quality vector analysis.

[0023] 本发明还提供了一种矢量信号分析方法,包括以下步骤: [0023] The present invention also provides a vector signal analysis method, comprising the steps of:

[0024] 步骤(幻,对接收到的中频信号进行八/0量化; [0024] Step (magic, the received intermediate frequency signal eight / quantization 0;

[0025] 步骤化),对八/0量化后的数字信号进行1/0变换,将速率较高的数字中频信号下变频为基带1/0数据; [0025] Step of), eight digital signal / 0 1/0 conversion quantization, the higher the rate of the digital IF signal to baseband data 1/0;

[0026] 步骤化),对下变频后的1/0信号进行整数倍抽取,整数抽取采用多级(:1(:滤波器和半带滤波器级联的方式,每级¢:1(:滤波器和每级半带滤波器前均有选择器,¢:1(:滤波器放在抽取级联的前端,半带滤波器在¢1(:滤波器的后端; [0026] Step of), 1/0 of the down-converted signal multiplied by an integer extraction, multistage decimation integer (: 1 (: filter and a half-band filter cascaded manner, each level ¢: 1 (: and the half-band filters are selected before each stage filter device, ¢: 1 (: decimation filter placed in the front end of the cascade, half-band (filter ¢ 1: the rear end of the filter;

[0027] 步骤((1),将整数倍抽取后的1/0数据的数据速率转化为整数倍的码元速率,还可以对1/0数据文件进行小数倍数据速率抽取变换; [0027] Step ((1), the data rate an integer multiple of 1/0 the data extraction after conversion of an integer multiple of the symbol rate, may also be a small multiple of the data rate of 1/0 for converting the data file extraction;

[0028] 步骤(6),对步骤((1)处理后的1/0数据进行矢量解调分析。 [0028] Step (6), step ((1) 1/0 processed vector data demodulation.

[0029] 可选地,步骤㈦中,1/0变换的步骤具体包括4/0量化后的数字信号经两个相乘器所构成的混频器混频后,将输入的数字信号和数字本振所产生的正交正弦信号相乘,相乘结果为基带1/0数据。 [0029] Alternatively, step (vii), the 1/0 comprises the step of converting the digital signal and the digital 4/0 quantized digital signal after the mixer is composed of two multiplying mixing, the input quadrature LO sinusoidal signal generated by multiplying a baseband 1/0 multiplication result data.

[0030] 可选地,矢量解调分析包括匹配滤波、矢量解调以及调制质量分析。 [0030] Alternatively, the vector comprises a matched filtering demodulation analysis, mass analysis, and a modulation demodulation vector.

[0031] 本发明的有益效果是: [0031] Advantageous effects of the present invention are:

[0032] (1)可对数字调制信号进行灵活、全面的矢量解调分析; [0032] (1) for flexible digital modulation signal, demodulating a comprehensive analysis of the vector;

[0033] (2)采用固定速率八/0采样,在可编程器件中进行1/0变换和整数倍采样率变换,降低现有矢量信号分析仪八/0采样和可编程硬件的设计难度; [0033] (2) The eight fixed rate / sample 0, for 1/0 conversion and integer sampling rate conversion in a programmable device, reduce the existing eight vector signal analyzer / 0 sampling and programmable hardware design difficulty;

[0034] (3)在矢量信号分析仪驻机软件中进行小数倍采样率变换以及矢量解调,支持非整数倍码元速率1/0文件的矢量回放分析,增强了矢量分析能力和分析结果的全面性。 [0034] (3) vector analytical capabilities and small multiple of the sampling rate conversion and demodulation vector, Support Vector Analysis playback non-integer multiple of the symbol rate 1/0 files enhances the vector signal analyzer software resident in comprehensive results.

附图说明 BRIEF DESCRIPTION

[0035] 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。 [0035] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, briefly introduced hereinafter, embodiments are described below in the accompanying drawings or described in the prior art needed to be used in describing the embodiments the drawings are only some embodiments of the present invention, those of ordinary skill in the art is concerned, without creative efforts, can derive from these drawings other drawings.

[0036] 图1为现有的矢量信号分析方法实现原理图; [0036] FIG. 1 is a schematic diagram of a conventional implement vector signal analysis;

[0037] 图2为本发明的矢量信号分析装置的原理图; Schematic vector signal analysis apparatus [0037] FIG. 2 of the present invention;

[0038] 图3为本发明的1/0变换器的原理框图; [0038] FIG. 3 is a schematic block diagram of the present invention, a 1/0 converter;

[0039] 图4为本发明的整数抽取模块的原理框图; Integer [0039] Figure 4 is a schematic block diagram of the invention the extraction module;

[0040] 图5为本发明的小数抽取模块的工作流程图。 A flowchart of fractional extraction module [0040] FIG. 5 of the present invention.

具体实施方式 detailed description

[0041] 下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0041] below in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention, but not all embodiments example. 基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, all other embodiments of ordinary skill in the art without any creative effort shall fall within the scope of the present invention.

[0042] 现有矢量信号分析仪器中采样率变换和矢量解调分析靠近处理流程前端导致可编程器件逻辑设计复杂、驻机软件结果分析不够全面以及使用局限性大,本发明给出了一种矢量信号分析装置及方法,超外差式矢量信号分析仪将被测调制信号通过滤波混频后变频到中频,中频信号经过滤波放大后进行数字化,高速八IX:量化后的中频信号再经过1/0变换和抽取滤波处理,将中频信号变成零中频的数字1/0复信号,然后基于这些1/0数据进行矢量解调分析。 [0042] The conventional vector signal analysis instrument sampling rate transform and vector demodulation processing flow near the distal end resulting in a complicated design of programmable logic devices, in software and the result of the analysis is not comprehensive use of big limitations, the present invention presents a vector signal analysis apparatus and method, a vector signal analyzer superheterodyne modulation signal under test filtered by a mixer to an intermediate frequency, filtered and amplified IF signal after digitizing, eight high-speed IX: quantized IF signal and then after 1 / 0 conversion and decimation filtering processing, the IF signal into a digital zero-IF complex signal 1/0, then 1/0 vector demodulation based on these data.

[0043] 下面结合附图,对本发明的矢量信号分析装置及方法进行详细说明。 [0043] below with reference to the accompanying drawings, vector signal analysis apparatus and method of the present invention will be described in detail.

[0044] 如图2所示,首先,八IX:模块采用固定采样率对接收到的中频信号进行八/!)量化,本发明采样率取值为10册12的整数倍,例如100册12、400册12、500册12等。 [0044] 2, the first eight IX: module uses the intermediate frequency signal received fixed sampling rate is eight /) quantization, the sampling rate of the present invention is an integral multiple of a value of 10 to 12, e.g. 12 100! , 400 12 12,500 books and so on. 采样率决定了信号的最大可分析带宽,采用固定采样率降低了八/0采样的实现难度。 Determines the maximum sampling rate of the signal analysis bandwidth, fixed sampling rate reduces the eight / 0 sampling difficult to achieve.

[0045] 然后,在可编程硬件设备中的1/0变换器对八IX:模块输出的数字信号进行1/0变换得到基带1/0数据。 [0045] Then, in programmable hardware devices converter for over 80 1/0 IX: digital signal output by the block transform 1/0 1/0 baseband data.

[0046] 1/0变换的基本功能是将速率较高的数字中频信号下变频为数字基带信号,图3是本发明1/0变换器的实现原理图。 The basic functions of [0046] 1/0 is converted to higher rates digital intermediate frequency signal converted to a digital baseband signal, FIG. 3 is a schematic diagram of 1/0 converter to achieve the present invention. 图3中,高速八IX:模块输出的中频信号送入1/0变换器;经两个相乘器所构成的混频器后,将输入的数字信号和数字本振所产生的正交正弦信号相乘,相乘结果为1/0两路信号。 In FIG. 3, eight high-speed IX: intermediate frequency signal converter module outputs into 1/0; sine quadrature mixer after two Multiplier composed of the input digital signal and the digital local oscillator generated signal, and a multiplication result is two signals 1/0.

[0047] 再然后,1/0信号送入整数抽取模块,完成对下变频后的1/0信号的整数倍抽取。 [0047] And then, 1/0 signal into an integer decimation module, complete extraction of the whole multiple of 1/0 of the downconverted signal. 本发明的矢量信号分析装置中抽取因子以1、2、5、10固定档位步进,抽取后的数据率默认为不小于2倍码元速率,考虑到1/0数据后续应用的灵活性以及与其它系统的兼容性,抽取后的数据率可在1〜20倍码元速率范围内设置。 Vector signal analysis apparatus according to the present invention, the decimation factor to 1,2,5,10 fixed gear step, the data rate after decimation default is not less than twice the symbol rate, taking into account the flexibility of subsequent application data 1/0 and, after extracting the data rate can be provided with compatibility with other systems within the range 1~20 times the symbol rate. 假设~为每符号点数,(淋码元速率)向上取整为1、2、5、10得到抽取后的数据率,则抽取比例为0/0采样率)/(抽取后的数据率),从而得到小数倍码元速率的1/0数据。 ~ Assumed for each symbol points (leaching symbol rate) is rounded up to the data rate 1,2,5,10 obtained after extraction, the extraction ratio of 0/0 sample rate) / (data rate after the decimation), 1/0 to obtain multiple data symbol rate is small. 以3.84腿2码元速率的信号为例,在100腿2的八/0采样时钟的情况下,设置每符号点数为2,则2^3.84册12 = 7.681^,向上取整得到抽取后的数据率为10册12,抽取比计算公式为100册12/10册12 = 10。 3.84 legs 2 to the signal symbol rate, for example, in a case where eight legs 100 / sampling clock 02 is provided as two points per symbol, the 2 ^ 12 = 7.681 ^ 3.84, rounding up after extraction to give 10 12 data rate, decimation ratio is calculated as 100 12 12/10 = 10 copies.

[0048] 本发明的整数抽取模块采用多级(:1(:滤波器和半带滤波器级联的方式实现。由于¢:1(:滤波器可以省略乘法器和系数存储器,运算效率较高,所以将其放在抽取级联的前端,实现高采样率数据的抽取。半带滤波器频率特性优于¢:1(:滤波器,用在¢:1(:滤波器的后端。本发明中(:1(:滤波器实现1〜1000倍抽取比,采用5级级联的方式实现,可以保证67(18的带外抑制,满足阻带衰减要求。半带滤波器采用3级级联的方式,实现1〜8倍的抽取比。¢:1(:滤波器和每级半带滤波器前均有选择器,选择是否进行抽取滤波。抽取比选取原则是当实现2、4、8倍抽取式选择半带滤波器,其它情况下由半带滤波器和(:1(:滤波器组合实现抽取。以10倍抽取比为例,将由(:1(:滤波器实现5倍抽取滤波,半带滤波器实现2倍抽取滤波。 [0048] integer extraction module of the present invention employs a multi-stage (: 1 (: filter and a half-band filter cascaded manner due ¢:. 1 (: a filter coefficient memory can be omitted and the multiplier, high efficiency operation Therefore it is extracted on the front end of the cascade to achieve a high data sampling rate decimation half-band filter frequency characteristics superior ¢:. 1 (: filter used in ¢: (1:. backend filter of the present invention (: 1 (: 1~1000 fold decimation filter implementation than using five cascaded manner, can guarantee band 67 (18 rejection, stopband attenuation required to meet the half-band filter using three stages. linked, to achieve 1~8 fold decimation ratio ¢:. 1 (:. select both the front and the half-band filter of each filter stage to select whether to perform decimation filter decimation ratio selection principle is achieved when 2,4, 8 times the half-band filter to select removable, in other cases, and half-band filter (manufactured by: decimation filter 5x: 1 (: a combination decimation filter extraction ratio of 10 times, for example, by (: 1 ( filtering, to achieve twice the half-band filter decimation filter.

[0049] 接下来,小数抽取模块将上述整数抽取模块输出的1〜20小数倍码元速率的1/0数据转化为整数倍的码元速率,还可以对1/0数据文件进行小数倍数据速率抽取变换。 1/0 Data [0049] Next, the integer to the fractional extraction module extracting module output 1~20 small multiple of a symbol rate is converted to an integer multiple of the symbol rate, may also be 1/0 to decimal data file extracting transform data rate. 本发明采用81%内插滤波进行小数倍抽取,得到整数倍码元速率的1/0数据,整数可以设置为常用的1、2、4、8、16等值。 The present invention employs a 1/0 interpolation filter data for the extracted multiple small 81%, to obtain an integral multiple of the symbol rate, it can be set to an integer 1,2,4,8,16 conventional equivalent. 在数据率改变时,要去掉高频分量,就需要将信号通过一个低通滤波器,理想低通滤波器在时域的表现形式就是函数,因此只要实现输入数据与81!10函数的卷积即可实现采样速率的变换。 When data rate changes, to remove the high frequency components, it is necessary to signal through a low-pass filter, a low pass filter in the ideal form of the time domain function is thus realized as long as the input data 81! Convolution function 10 converting the sampling rate can be realized. 在实现过程中,如图5所示,需要对81%函数进行截短并加窗锐化,为兼顾小数倍抽取的速度与精度两种不同应用情况,分别使用8个和40个点的函数,加窗进行过渡带锐化,通过控制开关来实现速度和精度的选择优化。 In the implementation, shown in Figure 5, the need for the truncated and 81% windowing function sharpening, two different applications of both small multiple extraction speed and accuracy, and 40, respectively, using eight points function, the windowing transition band sharpening, selection optimization is achieved by controlling the speed and accuracy of the switch.

[0050] 1/0数据不仅包含了信号的幅度信息,还包含了矢量分析必须的相位信息,在信号分析仪中具有非常广泛的应用,后端信号分析几乎都是基于1/0数据进行的,当今主流的信号分析仪都提供1/0数据文件保存功能,一些信号仿真软件如嫩11^8等也可以便捷的进行1/0文件输出,因此对1/0数据文件进行矢量回放分析具有非常重要的现实意义。 [0050] 1/0 data includes not only the amplitude information signal, further comprising a phase information necessary vector analysis, with a very wide range of applications in the signal analyzer, the latter signal is based on analysis of almost 1/0 of the data , today's mainstream signal analyzer provides 1/0 data file saving, some signals simulation software, such as 11 ^ 8 tender, also can easily be 1/0 of the output file, so the 1/0 vector data files playback analysis has very important practical significance. 由于本发明的小数抽取模块中具有小数倍抽取功能,只要将文件中的数据按照特定格式读入内存即可进行矢量解调分析,极大提高了矢量分析功能的通用性。 Since the fractional extraction module of the present invention having a small multiple of the extraction function, as long as the data in the file can be read into memory in accordance with a particular demodulation format vector, greatly increasing the versatility of the vector analysis.

[0051] 最后,矢量解调分析模块对上述小数抽取模块输出的整数倍码元速率的1/0数据进行后续的矢量解调分析,包括匹配滤波、矢量解调以及调制质量分析等一系列信号分析流程。 1/0 Data [0051] Finally, the above-described vector demodulation module fractional extraction module outputs an integral multiple of the symbol rate for subsequent demodulation vector, comprising a series of signal matched filtering, demodulation and the modulation vector mass analysis analysis process.

[0052] 本发明的矢量信号分析装置及方法,可对数字调制信号进行灵活、全面的矢量解调分析;采用固定速率八/0采样,在可编程器件中进行1/0变换和整数倍采样率变换,降低现有矢量信号分析仪八/0采样和可编程硬件的设计难度;在矢量信号分析仪驻机软件中进行小数倍采样率变换以及矢量解调,支持非整数倍码元速率1/0文件的矢量回放分析,增强了矢量分析能力和分析结果的全面性。 [0052] The vector signal analysis apparatus and method according to the present invention, the digital modulation signal may be flexible and comprehensive demodulation vector; eight fixed rate / sample 0, for 1/0 conversion in a programmable integer multiple of the sampling device and conversion rate, reduce the existing eight vector signal analyzer / 0 sampling and programmable hardware design difficulty; small-multiple of the sampling rate conversion and demodulation vector, supporting non-integer multiple of the symbol rate in the vector signal analyzer software resident in vector file playback 1/0 of analysis, enhance the comprehensive analysis and vector analysis results.

[0053] 以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 [0053] The foregoing is only preferred embodiments of the present invention but are not intended to limit the present invention, any modifications within the spirit and principle of the present invention, the, equivalent substitutions, improvements should be included in the within the scope of the present invention.

Claims (10)

1.一种矢量信号分析装置,其特征在于,包括=ADC模块、I/Q变换器、整数抽取模块、小数抽取模块和矢量解调分析模块; ADC模块对接收到的中频信号进行A/D量化; I/Q变换器对ADC模块输出的数字信号进行I/Q变换得到基带I/Q数据; 整数抽取模块接收I/Q变换器输出的I/Q信号,对下变频后的I/Q信号进行整数倍抽取,整数抽取模块采用多级CIC滤波器和半带滤波器级联的方式,每级CIC滤波器和每级半带滤波器前均有选择器,CIC滤波器放在抽取级联的前端,半带滤波器在CIC滤波器的后端; 小数抽取模块将整数抽取模块输出的I/Q数据的数据速率转化为整数倍的码元速率,还可以对I/Q数据文件进行小数倍数据速率抽取变换; 矢量解调分析模块对上述小数抽取模块输出的I/Q数据进行后续的矢量解调分析。 A vector signal analysis apparatus, comprising = ADC module, I / Q converter module integer extraction, fractional extraction module and a vector demodulation module; ADC module IF signal received by A / D quantization; I / Q converter to the digital signal output by the ADC module I / Q transforms a baseband I / Q data; extraction module receives an integer of I / Q converter output I / Q signal, the down-converted I / Q extracting signal multiplied by an integer, an integer of multi-stage extraction module CIC filter and a half-band filter in cascade, each stage were selected front CIC filter and the half-band filter of each stage, CIC filter in decimation stages linking the front end, the rear end of the half-band filter CIC filter; fractional extraction module integer decimation module output I / Q data rate of data is converted to an integer multiple of the symbol rate, also for I / Q data file extracting multiple small data rate conversion; vector demodulation module of the above-described fractional extraction module output I / Q data for subsequent demodulation vector.
2.如权利要求1所述的一种矢量信号分析装置,其特征在于,所述ADC模块采用固定采样率,采样率取值为1MHz的整数倍。 2. An vector signal analysis apparatus according to claim 1, wherein the fixed sampling rate of the ADC module, the value is an integer multiple of the sampling rate of 1MHz.
3.如权利要求1所述的一种矢量信号分析装置,其特征在于,所述I/Q变换器接收所述ADC模块输出的中频信号,经两个相乘器所构成的混频器后,将输入的数字信号和数字本振所产生的正交正弦信号相乘,相乘结果为基带I/Q数据。 3. An vector signal analysis apparatus according to claim 1, wherein the I / Q converter receives the IF signal output by the ADC module, the mixer is composed of two multiplied after orthogonal digital sinusoidal signal input and a digital local oscillator signal generated by a multiplication result is a baseband I / Q data.
4.如权利要求1所述的一种矢量信号分析装置,其特征在于,所述整数抽取模块的抽取因子以1、2、5、10固定档位步进。 4. An vector signal analysis apparatus according to claim 1, wherein the extraction module is integer decimation factor to 1,2,5,10 fixed gear stepping.
5.如权利要求4所述的一种矢量信号分析装置,其特征在于,所述CIC滤波器采用5级级联的方式,半带滤波器采用3级级联的方式。 5. An vector signal analysis apparatus according to claim 4, wherein said CIC filter using five cascaded manner, half-band filter using three cascaded manner.
6.如权利要求1所述的一种矢量信号分析装置,其特征在于,小数抽取模块采用sine内插滤波进行小数倍抽取,得到整数倍码元速率的I/Q数据。 One kind of the vector signal analysis apparatus as claimed in claim 1, characterized in that the fractional extraction module using multiple sine interpolation decimation filtering is small, to obtain an integral multiple of the symbol rate of the I / Q data.
7.如权利要求1所述的一种矢量信号分析装置,其特征在于,矢量解调分析模块的信号分析流程包括匹配滤波、矢量解调以及调制质量分析。 7. An vector signal analysis apparatus according to claim 1, characterized in that the signal analysis process of the analysis module comprises a demodulation vector matched filtering, demodulation and modulation quality vector analysis.
8.一种矢量信号分析方法,其特征在于,包括以下步骤: 步骤(a),对接收到的中频信号进行A/D量化; 步骤(b),对A/D量化后的数字信号进行I/Q变换,将速率较高的数字中频信号下变频为基带I/Q数据; 步骤(C),对下变频后的I/Q信号进行整数倍抽取,整数抽取采用多级CIC滤波器和半带滤波器级联的方式,每级CIC滤波器和每级半带滤波器前均有选择器,CIC滤波器放在抽取级联的前端,半带滤波器在CIC滤波器的后端; 步骤(d),将整数倍抽取后的I/Q数据的数据速率转化为整数倍的码元速率,还可以对I/Q数据文件进行小数倍数据速率抽取变换; 步骤(e),对步骤(d)处理后的I/Q数据进行矢量解调分析。 A vector signal analysis method comprising the following steps: Step (A), the intermediate frequency signal received by A / D quantization; step (B), of the digital signal A / D quantization I / Q conversion, the higher the rate of the digital IF signal to baseband I / Q data; a step (C), of the down-converted I / Q signal is multiplied by an integer decimation integer decimation filter and the multi-level half-CIC band filter cascaded manner, both the selector before each stage CIC filter and the half-band filter of each stage, on the front end of decimation CIC filter cascade, half-band filter in the rear of the CIC filter; step (D), after extracting the integral multiple I / Q data rate of data is converted to an integer multiple of the symbol rate, may also be a small multiple of the data rate of the I / Q extracting transform data file; step (E), step (D) after the process I / Q vector data demodulation.
9.如权利要求8所述的一种矢量信号分析方法,其特征在于,步骤(b)中,I/Q变换的步骤具体包括:A/D量化后的数字信号经两个相乘器所构成的混频器混频后,将输入的数字信号和数字本振所产生的正交正弦信号相乘,相乘结果为基带I/Q数据。 9. An vector signal analysis method according to claim 8, wherein the step (b) is, I / Q conversion step comprises: a digital signal after A / D quantization by the two Multiplier the mixer having a mixer, a quadrature sinusoidal signal input digital signal and the digital local oscillator is generated by multiplying the multiplication result into a baseband I / Q data.
10.如权利要求9所述的一种矢量信号分析方法,其特征在于,矢量解调分析包括匹配滤波、矢量解调以及调制质量分析。 10. An vector signal analysis method according to claim 9, wherein the matched filter includes a demodulation vector, the vector demodulation and modulation quality analysis.
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