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WO2018018578A1 - Appareil de modulation basée sur des informations vectorielles, et procédé de modulation - Google Patents

Appareil de modulation basée sur des informations vectorielles, et procédé de modulation Download PDF

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Publication number
WO2018018578A1
WO2018018578A1 PCT/CN2016/092220 CN2016092220W WO2018018578A1 WO 2018018578 A1 WO2018018578 A1 WO 2018018578A1 CN 2016092220 W CN2016092220 W CN 2016092220W WO 2018018578 A1 WO2018018578 A1 WO 2018018578A1
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WO
WIPO (PCT)
Prior art keywords
signal
vector
modulation
lookup table
digital signal
Prior art date
Application number
PCT/CN2016/092220
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English (en)
Chinese (zh)
Inventor
张科峰
Original Assignee
武汉芯泰科技有限公司
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 武汉芯泰科技有限公司 filed Critical 武汉芯泰科技有限公司
Priority to PCT/CN2016/092220 priority Critical patent/WO2018018578A1/fr
Publication of WO2018018578A1 publication Critical patent/WO2018018578A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits

Definitions

  • the present invention relates to the field of modulation technologies, and in particular, to a vector-based modulation apparatus and a modulation method.
  • the so-called digital modulation is a process of controlling a carrier's parameters with a digital baseband signal to be transmitted to vary with the digital baseband signal.
  • Digital modulation is to adapt the baseband signal to be transmitted for channel transmission.
  • digital modulation There are many types of digital modulation, mainly digital amplitude modulation (digital amplitude modulation), digital frequency modulation (digital frequency modulation), and digital phase modulation (digital phase modulation). Since the digital baseband signal can only take discrete finite values, the corresponding carrier parameters can only take discrete finite values.
  • the modulated signal can be regarded as the result of switching the carrier of different parameters by the digital baseband signal. This implementation method is called keying method.
  • ASK Amplitude Shift Keying
  • FSK Frequency Shift Keying
  • PSK Phase Shift Keying
  • QAM Quadrature Amplitude Modulation
  • the present invention provides a vector-based modulation apparatus and a modulation method.
  • the technical solution proposed by the present invention with respect to the above technical problems is as follows:
  • a vector-based modulation apparatus including:
  • a configuration unit configured to receive user configuration information to map the digital signal to a corresponding vector signal
  • a lookup table unit configured to store the digital signal, the corresponding vector signal and a mapping relationship thereof in the form of a lookup table, and to search the lookup table according to the input digital signal and output a corresponding vector signal.
  • the vector signal is any vector signal in any quadrant of the constellation diagram, and is different in the constellation diagram.
  • the vector signals are independent of each other.
  • the lookup table unit is a register.
  • a vector-based modulation method including the following steps:
  • S2 storing the digital signal, the corresponding vector signal, and a mapping relationship thereof in the form of a lookup table, and searching the lookup table according to the input digital signal and outputting a corresponding vector signal.
  • the vector signal is any vector signal in any quadrant of the constellation diagram, and is different in the constellation diagram.
  • the vector signals are independent of each other.
  • the lookup table is stored in a register.
  • the implementation of the embodiments of the present invention has the following beneficial effects:
  • the present application makes the signal modulation mode configurable and programmable through the configuration unit and the lookup table unit, and the digital signal is mapped into a vector signal, so that phase and amplitude can be simultaneously achieved.
  • Modulation so the modulation scheme of the present application is compatible with any existing modulation scheme, including rectangular QAM, cardioid QAM, PSK, and ASK.
  • FIG. 1 is a block diagram of a typical communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of the modulation apparatus shown in FIG. 1;
  • FIG. 3 is a flow chart of a modulation method provided by the present invention.
  • 4a and 4b are schematic diagrams showing the structure of a constellation diagram provided by an embodiment of the present invention.
  • the communication system 100 includes: a source encoding device 102, a channel encoding device 104, a modulating device 106, a channel 108, a demodulating device 110, a channel decrypting device 112, and a source encoding device 114.
  • the source encoder 102 is configured to receive the source 151 to be transmitted.
  • the source coding apparatus 102 is for encoding the source 151 and generating a source coded signal 152.
  • Channel coding means 104 is operative to channel encode source coded signal 152 and to generate channel coded signal 153.
  • Modulation means 106 is operative to modulate encoded signal 153 into signal 154 to be transmitted.
  • the to-be-transmitted signal 154 provides a receive signal 155 to the receiving end via channel 108.
  • the channel 108 includes, but is not limited to, a microwave radio frequency link, a satellite channel, a fiber optic cable, a composite fiber optic cable system, or a copper cable.
  • the channel 108 includes a propagation medium that introduces interference and distortion into the signal to be transmitted 154 such that the received signal 1 55 is different from the signal 154 to be transmitted. Interference and distortion include, but are not limited to, noise, attenuation, phase shift changes, etc.
  • the demodulation device 110 is configured to demodulate the received signal 155 into a demodulated signal 156.
  • Channel decoding device 112 is operative to decode demodulated signal 156 into channel decoded signal 157.
  • Source decoding device 114 is operative to further decode channel decode signal 157 into target signal 158.
  • the target signal 158 is provided to one or more receiver user devices.
  • the one or more receiver user devices include, but are not limited to, a personal computer, a digital terminal device, A telephone device, personal digital assistant, software application, or any other device that can send or receive data.
  • the modulation device 106 includes a configuration unit 202 and a lookup table unit 204.
  • the configuration unit 202 is configured to receive user configuration information 251 to map the digital signals to corresponding vector signals.
  • the use of configuration unit 202 makes the mapping relationship of the present application programmable. Therefore, the user can select an appropriate vector signal according to actual needs and define an appropriate mapping relationship.
  • the modulation apparatus provided by the present application can match all existing modulation modes, and can also perform modulation according to actual communication requirements by selecting the most suitable vector signal and mapping relationship.
  • the lookup table unit 204 is configured to store the digital signal, the corresponding vector signal and its mapping relationship in the form of a lookup table, and is further configured to search the lookup table according to the input digital signal 153 and output a corresponding vector signal 154 (ie, a signal to be transmitted) ). It is selected to store the vector signal selected by the user and the defined mapping relationship in the form of a lookup table, so that the mapping relationship and the vector signal can be freely changed.
  • the mapping between the digital signal and the vector signal is a one-to-one mapping.
  • the vector signals A1 ⁇ A8 may be any vector signals in any quadrant of the constellation diagram and are different in the constellation.
  • the vector signals Al ⁇ A8 can be selected from the same quadrant of the constellation.
  • the vector signals A1 ⁇ A8 can also be selected from different quadrants of the constellation. However, whether it is from the same quadrant or from different quadrants, the vector signals A1 ⁇ A8 are different in the constellation, so that the mapping between the digital signal and the vector signal is guaranteed to be one-to-one mapping.
  • the vector signals A1 ⁇ A8 are independent of each other, and there is no dependency between the vector signals.
  • the user can select each vector signal in a targeted manner. It should be understood that the user can individually configure each vector signal according to actual needs so that there is a certain relationship between them. Thus, when it is necessary to be compatible with existing modulation schemes, vector signals can be configured to meet existing modulation schemes.
  • lookup table unit 204 is a register.
  • the input digital signal 153 can be an address signal of the register, and the vector signal 154 corresponding to the digital signal 154 can be stored in a register.
  • the register 204 automatically outputs the vector signal 154 stored in the address.
  • the correspondence between the address signal and the vector signal can be obtained by the configuration unit 202. Configuration.
  • the present application makes the signal modulation mode configurable and programmable through the configuration unit and the lookup table unit, and the digital signal is mapped into a vector signal, so that the phase and amplitude modulation can be implemented simultaneously, so the modulation method of the present application can be compatible with any Existing modulation methods include rectangular QAM, heart-shaped QAM, PSK, and ASK.
  • This embodiment provides a vector-based modulation method. As shown in FIG. 3, the vector-based modulation method can be applied to a modulation apparatus as described above, and the method can include the following steps:
  • S2 storing the digital signal, the corresponding vector signal, and a mapping relationship thereof in the form of a lookup table, and searching the lookup table according to the input digital signal and outputting a corresponding vector signal.
  • the vector signals A1 ⁇ A8 may be any vector signals in any quadrant of the constellation diagram and are different in the constellation.
  • the vector signals Al ⁇ A8 can be selected from the same quadrant of the constellation.
  • the vector signals A1 ⁇ A8 can also be selected from different quadrants of the constellation. However, whether it is from the same quadrant or from different quadrants, the vector signals A1 ⁇ A8 are different in the constellation, so that the mapping between the digital signal and the vector signal is guaranteed to be one-to-one mapping.
  • the vector signals A1 ⁇ A8 are independent of each other, and there is no dependency between the vector signals.
  • the user can select each vector signal in a targeted manner. It should be understood that the user can individually configure each vector signal according to actual needs so that there is a certain relationship between them. Thus, when it is necessary to be compatible with existing modulation schemes, vector signals can be configured to meet existing modulation schemes.
  • the lookup table is stored in a register.
  • the lookup table 1 contains the input digital signals, that is, the address signals 000 to 111 of the registers (assuming the address signals are 3 bits), and the vector signals A1 to A8 corresponding to the digital signals one by one.
  • the number of bits of the address signal is only an example in this embodiment, and is not intended to limit the number of bits of the address signal.
  • the number of bits of the address signal can be designed to satisfy any modulation method as needed.
  • the register 204 when a specific address signal 153 is input, the register 204 automatically outputs the vector stored in the address according to the lookup table.
  • Signal 154 The correspondence between the address signal and the vector signal can be configured by the configuration unit 202.
  • the present application makes the signal modulation mode configurable and programmable through the configuration unit and the lookup table unit, and the digital signal is mapped into a vector signal, so that the phase and amplitude modulation can be implemented simultaneously, so the modulation method of the present application can be compatible with any Existing modulation methods include rectangular QAM, heart-shaped QAM, PSK, and ASK.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

L'invention concerne un appareil de modulation basée sur des informations vectorielles, et un procédé de modulation. L'appareil de modulation basée sur des informations vectorielles comprend une unité de configuration pour recevoir des informations de configuration d'utilisateur qui sont utilisées pour mapper un signal numérique sur un signal vectoriel correspondant ; et une unité de consultation de table pour stocker le signal numérique, le signal vectoriel correspondant et la relation de correspondance entre ceux-ci sous la forme d'une table à consulter, et pour interroger en outre la table à consulter d'après le signal numérique d'entrée et produire le signal vectoriel correspondant. Dans la présente invention, un procédé de modulation de signal peut être configuré au moyen d'une unité de configuration et d'une unité de consultation de table. En outre, un signal numérique est mappé sur un signal vectoriel, de sorte qu'une modulation de phase et une modulation d'amplitude peuvent être implémentées simultanément. Le procédé de modulation selon la présente invention est donc compatible avec l'un quelconque des procédés de modulation existants : QAM de constellation rectangulaire, QAM en forme de cœur, PSK, ASK, etc.
PCT/CN2016/092220 2016-07-29 2016-07-29 Appareil de modulation basée sur des informations vectorielles, et procédé de modulation WO2018018578A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/092220 WO2018018578A1 (fr) 2016-07-29 2016-07-29 Appareil de modulation basée sur des informations vectorielles, et procédé de modulation

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Application Number Priority Date Filing Date Title
PCT/CN2016/092220 WO2018018578A1 (fr) 2016-07-29 2016-07-29 Appareil de modulation basée sur des informations vectorielles, et procédé de modulation

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103179079A (zh) * 2011-12-21 2013-06-26 北京普源精电科技有限公司 正交幅度调制信号的产生方法、装置和数字信号发生器
US20140270014A1 (en) * 2013-03-15 2014-09-18 Samsung Electronics Co., Ltd. Method and apparatus for performing soft demapping in rotated quadrature amplitude modulation (qam) based communication system
CN105634851A (zh) * 2014-11-06 2016-06-01 苏州普源精电科技有限公司 可以生成自定义数据文件正交幅度调制信号的测量装置及其调制方法
CN105635027A (zh) * 2014-11-06 2016-06-01 苏州普源精电科技有限公司 可以生成伪随机序列正交幅度调制信号的测量装置及其调制方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103179079A (zh) * 2011-12-21 2013-06-26 北京普源精电科技有限公司 正交幅度调制信号的产生方法、装置和数字信号发生器
US20140270014A1 (en) * 2013-03-15 2014-09-18 Samsung Electronics Co., Ltd. Method and apparatus for performing soft demapping in rotated quadrature amplitude modulation (qam) based communication system
CN105634851A (zh) * 2014-11-06 2016-06-01 苏州普源精电科技有限公司 可以生成自定义数据文件正交幅度调制信号的测量装置及其调制方法
CN105635027A (zh) * 2014-11-06 2016-06-01 苏州普源精电科技有限公司 可以生成伪随机序列正交幅度调制信号的测量装置及其调制方法

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