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    SOFT VALUE EXTRACTION METHOD AND DEVICE APPLICABLE TO OVXDM SYSTEM, AND OVXDM SYSTEM
    1.
    发明申请
    SOFT VALUE EXTRACTION METHOD AND DEVICE APPLICABLE TO OVXDM SYSTEM, AND OVXDM SYSTEM 审中-公开

    公开(公告)号：US20190222335A1

    公开(公告)日：2019-07-18

    申请号：US16362400

    申请日：2019-03-22

    Applicant: Shenzhen Super Data Link Technology Ltd.

    Inventor： Ruopeng LIU ,  Chunlin JI ,  Hao ZHENG ,  Shasha ZHANG

    IPC: H04J3/06 ,  H04L1/00 ,  H04L25/49

    CPC classification number: H04J3/06 ,  H04L1/00 ,  H04L1/0054 ,  H04L25/49

    Abstract: This application discloses a soft value extraction method and device applicable to an OvXDM system, and the OvXDM system. In the method, waveform coding is performed on all symbols in a hard value sequence, to generate a predictive value after overlapped coding; the symbols in the hard value sequence are reversed one by one, and overlapped coding is performed on each reversed symbol and associated symbols before and after the reversed symbol, to generate a predictive value of the reversed symbol; and for each symbol in the hard value sequence, a soft value of the current symbol is calculated based on A×(+1−−1), where A is a coefficient related to a channel type, +1=∥yrx−y+1∥, and −1=∥yrx−y−1∥2; if y+1 is a predictive value of the symbol obtained after overlapped coding and before reversing, y−1 is a predictive value of the symbol obtained after overlapped coding and reversing; and yrx is a received signal sequence.

    SIGNAL MODULATION METHOD AND DEVICE
    2.
    发明申请
    SIGNAL MODULATION METHOD AND DEVICE 审中-公开

    公开(公告)号：US20190158323A1

    公开(公告)日：2019-05-23

    申请号：US16256894

    申请日：2019-01-24

    Applicant: Shenzhen Super Data Link Technology Ltd.

    Inventor： Ruopeng LIU ,  Chunlin JI ,  Changwei LV ,  Shasha ZHANG

    IPC: H04L25/03

    Abstract: The present invention provides a signal modulation method. The method includes: generating a transmit signal pulse waveform, where a width of the pulse waveform is τ, each pulse waveform is associated with n symbols (n>1), a width of each symbol is Δτ, and Δτ = τ n ; performing an operation on every n consecutive symbols in a to-be-sent symbol flow and the pulse waveform according to a preset operation manner, to generate an associated signal of the symbols and the pulse waveform; and sending the associated signal by using a transmission channel. The present invention helps improve spectral efficiency of a system. In addition, symbols are mutually constrained based on a correlation between the symbols, and information symbols are scattered to a plurality of symbols, thereby helping improve a capability of resisting noise and attenuation by a signal.

    METHOD FOR ADJUSTING ELECTROMAGNETIC WAVE, AND METAMATERIAL
    3.
    发明申请
    METHOD FOR ADJUSTING ELECTROMAGNETIC WAVE, AND METAMATERIAL 审中-公开

    公开(公告)号：US20190081618A1

    公开(公告)日：2019-03-14

    申请号：US16184036

    申请日：2018-11-08

    Applicant: SHENZHEN SUPER DATA LINK TECHNOLOGY LTD.

    Inventor： Ruopeng LIU ,  Chunlin JI ,  Jing NIE ,  YanQing TAN

    IPC: H03K5/00 ,  H01Q15/14 ,  H03H11/02

    Abstract: A metamaterial comprises a plurality of electrically controllable metamaterial units each comprising a varactor diode; the predetermined angle is an angle at which an electromagnetic wave is reflected from a surface of the metamaterial; there is an association relationship between the predetermined angle and the first phase difference; the method comprises: determining a first phase difference between electromagnetic waves reflected by two adjacent electrically controllable metamaterial units in a metamaterial based on a predetermined angle; determining a target capacitance of the varactor diode in each electrically controllable metamaterial unit based on the first phase difference; and adjusting a capacitance of the varactor diode in each electrically controllable metamaterial unit to the target capacitance.

    METAMATERIAL, AND METHOD AND APPARATUS FOR ADJUSTING FREQUENCY OF METAMATERIAL
    4.
    发明申请
    METAMATERIAL, AND METHOD AND APPARATUS FOR ADJUSTING FREQUENCY OF METAMATERIAL 审中-公开

    公开(公告)号：US20190074824A1

    公开(公告)日：2019-03-07

    申请号：US16184411

    申请日：2018-11-08

    Applicant: SHENZHEN SUPER DATA LINK TECHNOLOGY LTD.

    Inventor： Ruopeng LIU ,  Chunlin JI ,  Jing NIE ,  Yanqing TAN

    IPC: H03K5/00 ,  H03H11/02

    Abstract: The present invention discloses a metamaterial, and a method and an apparatus for adjusting a frequency of the metamaterial. The metamaterial includes a substrate material, and an electrically controllable microstructure unit array disposed on the substrate material and including a plurality of electrically controllable microstructure units. Each electrically controllable microstructure unit includes an external metal structure, an internal metal structure, and a varactor diode. The internal metal structure and the external metal structure define a ring-shaped channel. The varactor diode is disposed in the ring-shaped channel of each electrically controllable microstructure unit, and is configured for adjusting an operating frequency of each electrically controllable microstructure unit according to a voltage applied across the varactor diode. According to the present invention, a technical problem of failing to quickly and accurately adjust an operating frequency of the metamaterial in the prior art is solved.

    OVERLAPPED MULTIPLEXING-BASED MODULATION AND DEMODULATION METHOD AND DEVICE
    6.
    发明申请
    OVERLAPPED MULTIPLEXING-BASED MODULATION AND DEMODULATION METHOD AND DEVICE 审中-公开

    公开(公告)号：US20190238255A1

    公开(公告)日：2019-08-01

    申请号：US16379744

    申请日：2019-04-09

    Applicant: Shenzhen Super Data Link Technology Ltd.

    Inventor： Ruopeng LIU ,  Chunlin JI ,  Hao ZHENG ,  Shasha ZHANG

    IPC: H04J99/00 ,  H04L27/32

    Abstract: An overlapped multiplexing-based modulation and demodulation method and device are disclosed. In the modulation method, a precoding structure is used, and a transmit end first performs parity check product code-based coding on an input information sequence, generates a factor graph for a coding result and according to a coding rule, then performs overlapped multiplexing-based modulation and coding, and transmits a coded signal by using an antenna. In the demodulation method, a signal is transmitted by using a channel, and after receiving the signal by using an antenna, a receive end first performs digital signal processing, including processes such as synchronization and equalization, then performs overlapped multiplexing-based demodulation and decoding, and finally performs factor graph-based belief propagation decoding on a decoding result, to finally obtain a decoded sequence. In this application, a product code-based decoding method is used, a parity check code is used as a subcode, and a belief propagation idea of the factor graph is applied to a decoder end. Therefore, a parity check product code in a simple structure is used. In addition, in the method, the factor graph is used in a decoding process, thereby reducing operation complexity.

    DECODING METHOD AND APPARATUS, AND SYSTEM THEREFOR
    9.
    发明申请
    DECODING METHOD AND APPARATUS, AND SYSTEM THEREFOR 审中-公开

    公开(公告)号：US20180302261A1

    公开(公告)日：2018-10-18

    申请号：US16014413

    申请日：2018-06-21

    Applicant: SHENZHEN SUPER DATA LINK TECHNOLOGY LTD.

    Inventor： Ruopeng LIU ,  Chunlin JI ,  Shasha ZHANG

    IPC: H04L27/26 ,  H04L25/02

    CPC classification number: H04L27/2675 ,  H03M13/256 ,  H04L1/00 ,  H04L5/06 ,  H04L25/0202 ,  H04L25/03203 ,  H04L25/497 ,  H04L27/2602 ,  H04L27/2657 ,  H04L27/2671

    Abstract: A method includes: receiving a to-be-decoded symbol sequence, where the to-be-decoded symbol sequence includes N symbols; dividing the received to-be-decoded symbol sequence into a first symbol sequence and a second symbol sequence; calculating first distances between the first symbol sequence and each of corresponding 2K ideal superimposed symbol sequences, and obtaining paths corresponding to relatively small distances based on the first distances; sequentially performing sequence detection on each symbol in the second symbol sequence based on the paths corresponding to the 2k-1 relatively small distances, calculating second distances between each symbol in the second symbol sequence and each ideal symbol sequence, and after the sequence detection is performed on a last symbol, obtaining an ideal symbol sequence corresponding to a minimum distance based on the second distances; and using the ideal symbol sequence corresponding to the minimum distance as an output symbol sequence.

    MODULATION METHOD AND APPARATUS APPLICABLE TO OVXDM SYSTEM, AND OVXDM SYSTEM
    10.
    发明申请
    MODULATION METHOD AND APPARATUS APPLICABLE TO OVXDM SYSTEM, AND OVXDM SYSTEM 审中-公开

    公开(公告)号：US20190245675A1

    公开(公告)日：2019-08-08

    申请号：US16254553

    申请日：2019-01-22

    Applicant: Shenzhen Super Data Link Technology Ltd.

    Inventor： Ruopeng LIU ,  Chunlin JI ,  XingAn XU ,  Shasha ZHANG

    IPC: H04L5/22 ,  H04L27/26 ,  H04L25/497 ,  H04L27/34

    Abstract: The present invention discloses a modulation method and a modulation apparatus applicable to an OvXDM system, and an OvXDM system. On the one hand, an initial envelope waveform is virtually cut off, and a modulation-domain shift interval is calculated by using a virtual cutoff width of the initial envelope waveform, such that a symbol width obtained after modulation becomes smaller, and a transmission rate is improved; on the other hand, because the initial envelope waveform is virtually cut off but not really cut off, shifting and superimposition are still performed on an initial envelope waveform with tailing, such that the waveform still retains a good performance, such as a relatively narrow width and relatively fast side lobe attenuation, in a corresponding domain. Therefore, in the present invention, the good performance of the waveform is retained in the corresponding domain while the transmission rate is increased.

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