利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

434 条记录 (耗时 0.043 秒)

    SPECTRUM SHAPING AND SUBBAND SPECTRUM SHAPING FOR TIGHT SPECTRUM CONFINEMENT AND TRANSCEIVER STRUCTURE
    1.
    发明公开
    SPECTRUM SHAPING AND SUBBAND SPECTRUM SHAPING FOR TIGHT SPECTRUM CONFINEMENT AND TRANSCEIVER STRUCTURE 审中-公开

    公开(公告)号：US20240333561A1

    公开(公告)日：2024-10-03

    申请号：US18193564

    申请日：2023-03-30

    申请人： QUALCOMM Incorporated

    发明人： Jing Jiang ,  Seyedkianoush Hosseini ,  Lei Xiao ,  Vinayak Suresh ,  Jae Won Yoo

    IPC分类号： H04L25/03 ,  H04W72/0453 ,  H04W72/20

    CPC分类号： H04L25/03828 ,  H04W72/0453 ,  H04W72/20

    摘要： Methods, systems, and devices for wireless communications are described. A transmitting device may filter data tones (e.g., in edge subbands of an allocated frequency band) to achieve time domain windowing or shaping. Data tones of edge subbands of a configured frequency band may be filtered to shape a waveform such that it does not extend beyond symbol boundaries (e.g., does not result in emission leakage). In some examples, the transmitter may provide an indication of subband frequency domain shaping filters used to the receiver, to support demodulation on the receiver side. In some examples, the transmitter may indicate a demodulation reference signal (DMRS) comb structure (e.g., of the edge subbands) to the receiver, and the receiver may determine or estimate the filters of the subband frequency domain shaping based on the comb structure or the indication of the filters.

    Feedback Based on Codebook Subset
    2.
    发明申请
    Feedback Based on Codebook Subset 审中-公开

    公开(公告)号：US20180367194A1

    公开(公告)日：2018-12-20

    申请号：US16110853

    申请日：2018-08-23

    申请人： Apple Inc.

    发明人： Lai King Tee ,  Yi Song ,  Neng Wang

    IPC分类号： H04B7/0456 ,  H04L25/03 ,  H04B7/06 ,  H04B7/0452

    CPC分类号： H04B7/0456 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0639 ,  H04B7/0695 ,  H04L25/03828

    摘要： The present invention provides for an improved application of signal strength weightings in a SDMA sectorized cellular network. The improved signal strength weightings application is conducted through the improved selection of weightings from a new codebook subset or by the selection of weightings from a larger codebook subset. In a further embodiment, an antenna beam index or bit map can be used to select the best beam(s) in a SDMA sectorized cellular network. In another embodiment, a field or factor in an uplink or downlink transmission packet can designate which directional transmission beam is best suited for the transmission or when the directional transmission beam should be activated.

    Feedback Based on Codebook Subset
    3.
    发明申请
    Feedback Based on Codebook Subset 审中-公开

    公开(公告)号：US20180167114A1

    公开(公告)日：2018-06-14

    申请号：US15894154

    申请日：2018-02-12

    申请人： Apple Inc.

    发明人： Lai King Tee ,  Yi Song ,  Neng Wang

    IPC分类号： H04B7/0456 ,  H04B7/04 ,  H04L25/03

    CPC分类号： H04B7/0456 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0639 ,  H04B7/0695 ,  H04L25/03828

    摘要： The present invention provides for an improved application of signal strength weightings in a SDMA sectorized cellular network. The improved signal strength weightings application is conducted through the improved selection of weightings from a new codebook subset or by the selection of weightings from a larger codebook subset. In a further embodiment, an antenna beam index or bit map can be used to select the best beam(s) in a SDMA sectorized cellular network. In another embodiment, a field or factor in an uplink or downlink transmission packet can designate which directional transmission beam is best suited for the transmission or when the directional transmission beam should be activated.

    MULTI-BAND NOISE REDUCTION SYSTEMS AND METHODS
    7.
    发明申请
    MULTI-BAND NOISE REDUCTION SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20180026816A1

    公开(公告)日：2018-01-25

    申请号：US15617143

    申请日：2017-06-08

    申请人： TEKTRONIX, INC.

    发明人： John J. Pickerd ,  Kan Tan ,  Pirooz Hojabri

    IPC分类号： H04L25/03 ,  H04B15/00

    CPC分类号： H04L25/03828 ,  G01R13/0218 ,  G01R19/25 ,  H04B15/00

    摘要： Systems and methods directed towards reducing noise introduced into a signal when processing the signal are discussed herein. In embodiments a signal may initially be split by a multiplexer into two or more frequency bands. Each of the frequency bands can then be forwarded through an assigned channel. One or more channels may include an amplifier to independently boost the signal band assigned to that channel prior to a noise source within the assigned channel. This results in boosting the signal band relative to noise introduced by the noise source. In some embodiments, a filter may also be implemented in one or more of the channels to remove noise from the channel that is outside the bandwidth of the signal band assigned to that channel. Additional embodiments may be described and/or claimed herein.