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    Pilot scheme for a MIMO communication system
    1.
    发明授权
    Pilot scheme for a MIMO communication system 有权

    公开(公告)号：US10797764B2

    公开(公告)日：2020-10-06

    申请号：US16519158

    申请日：2019-07-23

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC: H04W4/00 ,  H04B7/0452 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/0413 ,  H04W88/08 ,  H04J13/18 ,  H04L1/06 ,  H04L25/02 ,  H04J13/16

    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

    Pilot scheme for a MIMO communication system
    4.
    发明授权
    Pilot scheme for a MIMO communication system 有权
    MIMO通信系统的导频方案

    公开(公告)号：US09008036B2

    公开(公告)日：2015-04-14

    申请号：US13721784

    申请日：2012-12-20

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC: H04W4/00 ,  H04W72/04 ,  H04B7/04 ,  H04L5/00 ,  H04L27/26 ,  H04L1/06 ,  H04L25/02

    CPC classification number: H04B7/0452 ,  H04B7/0413 ,  H04J13/18 ,  H04J2013/165 ,  H04L1/0625 ,  H04L5/001 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04W72/04 ,  H04W72/044 ,  H04W88/08

    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

    Abstract translation: 本发明采用诸如单载波FDM通信系统的频分多址（FDM）通信系统的导频方案。 给定的发送时间间隔将包括多个业务符号和两个或更多个短导频符号，它们彼此间隔开至少一个业务符号，并且将具有小于任何给定业务的傅里叶变换长度的傅里叶变换长度 符号。 多个发射机将产生导频信息，并以正交方式将导频信息调制到短导频符号的子载波上。 每个发射机可以在时间和频域内使用不同的子载波，由发射时间间隔内的短导频符号包围。 或者，每个发射机可以使用唯一的码分多路复用码对导频信息进行唯一的编码，并将编码的导频信息调制到短导频符号的公共子载波上。

    Pilot scheme for a MIMO communication system
    5.
    发明授权
    Pilot scheme for a MIMO communication system 有权

    公开(公告)号：US10560159B2

    公开(公告)日：2020-02-11

    申请号：US16151636

    申请日：2018-10-04

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC: H04W4/00 ,  H04B7/0452 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/0413 ,  H04W88/08 ,  H04J13/18 ,  H04L1/06 ,  H04L25/02 ,  H04J13/16

    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

    Pilot scheme for a MIMO communication system
    6.
    发明授权
    Pilot scheme for a MIMO communication system 有权

    公开(公告)号：US10110285B2

    公开(公告)日：2018-10-23

    申请号：US15691877

    申请日：2017-08-31

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC: H04W4/00 ,  H04B7/0452 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04J13/18 ,  H04B7/0413 ,  H04W88/08 ,  H04L25/02 ,  H04J13/16 ,  H04L1/06

    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

    Adaptive transmission systems and methods
    9.
    发明授权
    Adaptive transmission systems and methods 有权

    公开(公告)号：US10686512B2

    公开(公告)日：2020-06-16

    申请号：US15796071

    申请日：2017-10-27

    Applicant: APPLE INC.

    Inventor： Jianglei Ma ,  Ming Jia ,  Jianming Wu ,  Peiying Zhu ,  Wen Tong ,  Evelyne Le Strat ,  Sarah Boumendil ,  Moussa Abdi

    IPC: H04B7/06 ,  H04B7/0452

    Abstract: Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.

    Pilot Scheme for a MIMO Communication System
    10.
    发明申请
    Pilot Scheme for a MIMO Communication System 审中-公开

    公开(公告)号：US20200177246A1

    公开(公告)日：2020-06-04

    申请号：US16786679

    申请日：2020-02-10

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC: H04B7/0452 ,  H04W72/04 ,  H04J13/18 ,  H04L5/00 ,  H04W88/08 ,  H04B7/0413 ,  H04L27/26

    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

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