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    METHOD AND DEVICE FOR ALAMOUTI CODING IN FILTERBANK MULTI-CARRIER TRANSMISSION SYSTEM
    12.
    发明申请
    METHOD AND DEVICE FOR ALAMOUTI CODING IN FILTERBANK MULTI-CARRIER TRANSMISSION SYSTEM 审中-公开

    公开(公告)号：US20180248729A1

    公开(公告)日：2018-08-30

    申请号：US15753061

    申请日：2017-03-29

    Applicant: RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY

    Inventor： Kwonhue CHOI

    IPC: H04L27/26 ,  H04L1/06

    CPC classification number: H04L27/264 ,  H04L1/06 ,  H04L1/0668 ,  H04L25/02 ,  H04L25/03821 ,  H04L27/26

    Abstract: An Alamouti coding method includes mapping real number data symbols to a first subcarrier to an (N/2−1)th subcarrier, based on indices of the subcarriers, mapping the mapped real number data symbols and real number data symbols constituting an Alamouti coded symbol pair to an (N/2+1)th subcarrier to an (N−1)th subcarrier, in a frequency inversion scheme with reference to an (N/2)th subcarrier, adjusting a phase of each real number data symbol mapped to the first subcarrier to the (N/2−1)th subcarrier, by using a first phase adjustment value, based on indices of the mapped subcarriers and an index of a time interval, and adjusting a phase of each real number data symbol mapped to the (N/2+1)th subcarrier to the (N−1)th subcarrier, by using a conjugate value of a first phase adjustment value for a corresponding real number data symbol and the real data symbols constituting the Alamouti coded symbol pair.

    CODEBOOK CONFIGURATION METHOD AND USER EQUIPMENT
    16.
    发明申请
    CODEBOOK CONFIGURATION METHOD AND USER EQUIPMENT 审中-公开

    公开(公告)号：US20180167117A1

    公开(公告)日：2018-06-14

    申请号：US15895666

    申请日：2018-02-13

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Kunpeng LIU ,  Jianghua LIU ,  Leiming ZHANG

    IPC: H04B7/04 ,  H04B7/0417 ,  H04B7/06 ,  H04L1/06

    CPC classification number: H04B7/0478 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0663 ,  H04L1/06

    Abstract: The present invention provides a codebook configuration method and user equipment. The UE receives a reference signal that is of an antenna whose quantity of antenna ports is X and that is sent by a base station and configuration information of a codebook subset restriction for the quantity X of antenna ports, where the configuration information of the codebook subset restriction for the quantity X of antenna ports includes first configuration information and second configuration information; determines, according to the configuration information of the codebook subset restriction for the quantity X of antenna ports, a precoding matrix on which channel measurement and feedback need to be performed; and obtains, by means of measurement according to the reference signal, the precoding matrix on which channel measurement and feedback need to be performed and that is of antenna ports.

    Unconditional secure communication method based on beam-forming and security code
    17.
    发明授权
    Unconditional secure communication method based on beam-forming and security code 有权

    公开(公告)号：US09985986B2

    公开(公告)日：2018-05-29

    申请号：US15306094

    申请日：2015-06-26

    Applicant: University of Electronic Science and Technology of China

    Inventor： Hong Wen ,  Jie Tang ,  Da Xiang ,  Huanhuan Song

    IPC: H04L29/06 ,  H04B7/06 ,  H04B7/0456

    CPC classification number: H04L63/1475 ,  H04B7/0456 ,  H04B7/0617 ,  H04L1/06 ,  H04L9/0875 ,  H04L63/0428 ,  H04W12/12

    Abstract: The present invention discloses an unconditional secure communication method based on beam-forming and security code, which comprises the following steps of: Legitimate users send to the signal pie-encoded and modulated, meanwhile eavesdropper receives signals and calculates the bit error rate; computing security coding parameters, legitimate received users send pilot sequence, and legitimate sending users estimate legitimate channel, and extract information on legal channel coding and modulating signal was SVD pre-coding and sending; the signal was decoded, that will be judgment and demodulation then the signal after decoding do security code is transmitted to message or tapping, due to lack of legal channel information, eavesdropper cannot lift pre-coding processing of the received signal with the high bit error rate. This method can establish advantages channel of the wiretap model channel and to ensure that legitimate users can receive signals at the lower bit error rate.

    TECHNIQUES FOR HIGH EFFICIENCY BASIC SERVICE SET OPERATION
    19.
    发明申请
    TECHNIQUES FOR HIGH EFFICIENCY BASIC SERVICE SET OPERATION 审中-公开

    公开(公告)号：US20180124866A1

    公开(公告)日：2018-05-03

    申请号：US15801461

    申请日：2017-11-02

    Applicant: QUALCOMM Incorporated

    Inventor： Alfred ASTERJADHI ,  George CHERIAN ,  Abhishek Pramod PATIl ,  Simone MERLIN ,  Raja BANERJEA

    IPC: H04W84/12 ,  H04W88/08 ,  H04W72/04

    CPC classification number: H04W84/12 ,  H04L1/0025 ,  H04L1/06 ,  H04W12/06 ,  H04W72/0433 ,  H04W72/0453 ,  H04W88/08

    Abstract: Aspects of the present disclosure provide techniques for high efficiency (HE) basic service set (BSS) operations. In an implementation, a wireless station (STA) can identify a set including one or more modulation coding scheme (MCS) and number of spatial streams (NSS) tuples for HE communications in wireless local area networks (WLANs). The STA can determine whether the set is supported by a BSS and also determine that the STA is to attempt to join the BSS in response to a determination that the set is supported by the BSS. In another implementation, the STA can set a channel width capability for high throughout (HT) communications and very high throughput (VHT) communications in WLANs to be the same as a channel width capability for HE communications in WLANs, and can transmit information that indicates that the STA has the same channel width capability for HT, VHT, and HE communications in WLANs.

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