Precoding techniques for wireless communications

    公开(公告)号:US11611379B2

    公开(公告)日:2023-03-21

    申请号:US17246374

    申请日:2021-04-30

    Abstract: Methods, systems, and devices for wireless communications are described in which a base station may identify a null space matrix that lies within a null space of an effective channel matrix for communications between the base station and a user equipment (UE). An indication of the null space matrix may be provided to the UE, and the null space matrix used to determine modifications to a precoding matrix. The base station and UE may determine a redistribution matrix that provides a reduced variance of transmission powers for a number of transmission channels, where a product of the null space matrix and the redistribution matrix may be computed and added to the precoding matrix to generate a modified precoding matrix. The modified precoding matrix may be used to generate the communications from the base station and UE with reduced power variance across channels.

    OUTER CODING TECHNIQUES IN WIRELESS COMMUNICATIONS

    公开(公告)号:US20230066111A1

    公开(公告)日:2023-03-02

    申请号:US17411858

    申请日:2021-08-25

    Abstract: Methods, systems, and devices for wireless communications are described that provide for a transmitter (e.g., a user equipment (UE) or base station) and receiver (e.g., a UE or base station) to transmit and receive data packets that are encoded according to an outer coding technique. The outer coding technique may provide for data bits and parity bits to be included in a single physical layer transmission. In some cases, data packets (e.g., data bits) may be segmented into multiple subpackets, and coding may be performed across different subpackets of different data packets (e.g., in a diagonal coding pattern). In some examples, each transmission in the physical layer may contain both data subpackets and parity subpackets, which may balance an input and an output load of a buffer (e.g., a layer two (L2) decoding buffer at the receiver) during decoding.

    TRANSMISSION PARAMETER SIGNALING FOR HIGHER ORDER MODULATION

    公开(公告)号:US20230064653A1

    公开(公告)日:2023-03-02

    申请号:US17459899

    申请日:2021-08-27

    Abstract: Methods, systems, and devices for wireless communications are described that provide for configuration of one or more parameter tables that provide mapping between channel measurements and a channel quality indicator (CQI), one or more tables that provide mapping between a modulation and coding scheme (MCS) index and a modulation order and coding rate, or any combinations thereof. A base station may provide configuration information to a user equipment (UE) that indicates a table size for one or more CQI or MCS tables, and a number of bits that are to be transmitted in control information to indicate an index value for the CQI and/or MCS tables. Alternatively, an existing CQI or MCS table may have entries that are modified based on a modulation order that is supported by the UE, and the base station may provide configuration information that indicates the modified entries.

    PROTECTION LEVEL INDICATION AND CONFIGURATION

    公开(公告)号:US20230060726A1

    公开(公告)日:2023-03-02

    申请号:US17461523

    申请日:2021-08-30

    Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit, to a user equipment (UE), a control message that includes an identification of a set of protection levels corresponding to different degrees of physical layer security for securing communications between the UE and the base station. The base station may transmit, to the UE, an indication of an identified protection level of the set of protection levels to be used by the UE for securing the communications between the UE and the base station. The UE may communicate with the base station in accordance with the identified protection level.

    Peak reduction tone allocation
    339.
    发明授权

    公开(公告)号:US11595237B1

    公开(公告)日:2023-02-28

    申请号:US17736075

    申请日:2022-05-03

    Abstract: A user equipment for wireless communications includes a memory configured to store a peak reduction tone (PRT) table and a processor configured to retrieve a plurality of PRT sequences from the PRT table. The plurality of PRT sequences includes a first PRT sequence based upon a first data rate and a second PRT sequence based upon a second data rate. The second data rate is larger than the first data rate, and the second PRT sequence is a subset of the first PRT sequence. The user equipment also includes a power amplifier operable to transmit data with the first PRT sequence according to the first data rate or with the second PRT sequence according to the second data rate.

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