Polar codes with dynamic cyclic redundancy check configuration

    公开(公告)号:US12155478B2

    公开(公告)日:2024-11-26

    申请号:US18175226

    申请日:2023-02-27

    Abstract: Methods, systems, and devices for wireless communications are described. Cyclic redundancy check (CRC) bits may be appended to a set of information bits on a per-group basis prior to encoding using an error correcting code. The amount of CRC bits appended to each group of information bits may be based on the priority of the group of information bits. For example, the priority may be based on the type of information conveyed by the group of information bits. For example, for a video stream, information bits conveying low frequency information may have a higher priority than information bits conveying high frequency information, as the low frequency bits may be more important to user perception/experience of the video. The transmitting device and the receiving device may negotiate the CRC configuration (e.g., the CRC bits per-group and the locations of the groups) so that the receiving device can verify the information bits.

    RS pattern associated with dynamic spur detection

    公开(公告)号:US12107789B2

    公开(公告)日:2024-10-01

    申请号:US17651400

    申请日:2022-02-16

    CPC classification number: H04L5/0048 H04W72/23

    Abstract: A base station may configure a user equipment (UE) with a subset of reference signal (RS) configurations among a set of RS configurations, and transmit a plurality of RSs based on the subset of RS configurations. The RS may be a demodulation RS (DMRS). The plurality of RSs may be configured to span each of the plurality of resource elements (REs) in the active bandwidth part (BWP). The UE may receive the plurality of RSs based on the subset of RS configurations and perform a spur detection based on the plurality of RSs received based on the subset of RS configurations. Each RS configuration of the set of RS configurations may be associated with at least one of the subset of RS configurations that is associated with the plurality of RSs spanning each of the plurality of REs in the active BWP.

    TECHNIQUES FOR TONE RESERVATION IN ORTHOGONAL TIME-FREQUENCY SPACE WAVEFORM COMMUNICATIONS

    公开(公告)号:US20240314013A1

    公开(公告)日:2024-09-19

    申请号:US18185847

    申请日:2023-03-17

    CPC classification number: H04L27/2639 H04L27/2614 H04L27/2686 H04W28/26

    Abstract: Methods, systems, and devices for wireless communications are described that provide for application of a tone reservation signal for orthogonal time-frequency space (OTFS) waveform communications. A tone reservation signal may use a first subset of resources of a set of resources associated with an OTFS frame, which may mitigate relatively large PAPR associated with transmission of the OTFS frame. A tone reservation signal may use in-frame resources (e.g., as delay-Doppler locations within a delay-Doppler resource grid) of the OTFS frame, or may use tone reservation resources may correspond subcarriers that are out-of-band with subcarriers of an OTFS frame. Signaling may be provided by a transmitting device that indicates the tone reservation resources, and a receiving device may decode a received communication in accordance with remaining resources other than the tone reservation resources.

    DEMODULATION REFERENCE SIGNAL SHARING ACROSS USER EQUIPMENTS (UES) SUPPORTING OVER THE AIR DIGITAL PRE-DISTORTION

    公开(公告)号:US20240276403A1

    公开(公告)日:2024-08-15

    申请号:US18168088

    申请日:2023-02-13

    CPC classification number: H04W52/52 H04L5/0051 H04W72/0453

    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques relate to improved methods, systems, devices, and apparatuses that support demodulation reference signal sharing across user equipments (UEs) supporting over the air (OTA) digital pre-distortion (DPD). For example, the described techniques provide for demodulation reference signal (DMRS) sharing across UEs supporting OTA DPD. A network entity may share a full DMRS pattern with multiple frequency-division multiplexed (FDMed) UEs. Based on the shared DMRS pattern, the UEs may evaluate the non-linear impairment by estimating non-linearity (NL) compensation function coefficients. Each of the UEs may indicate, to the network entity, their estimated NL compensation function coefficients. The network entity may apply an updated NL compensation function based on the NL compensation function coefficients from the various UEs and transmit a downlink transmission according to the updated NL compensation function.

    TECHNIQUES FOR CONVEYING ON-OFF KEYING SIGNALING VIA ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WAVEFORMS

    公开(公告)号:US20240163144A1

    公开(公告)日:2024-05-16

    申请号:US18052060

    申请日:2022-11-02

    CPC classification number: H04L27/02 H04L27/26025 H04L27/2605 H04W52/0232

    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a network entity may map on-off keying (OOK) symbols of an OOK sequence to an orthogonal frequency division multiplexing (OFDM) waveform including at least one OFDM symbol with a cyclic prefix. Each OOK symbol of the OOK sequence may be mapped to at least one segment of an integer quantity of segments of the OFDM waveform based on an OOK data rate. A duration of each segment of the integer quantity of segments of the OFDM waveform may be based on the OOK data rate and a ratio between a duration of the cyclic prefix and a duration of a remainder of the OFDM symbol. The network entity may transmit the OFDM waveform via a set of frequency resources. A user equipment (UE) may receive and decode the OFDM waveform to obtain the OOK sequence.

    Precoding perturbation to allow large array digital post distortion

    公开(公告)号:US11956006B2

    公开(公告)日:2024-04-09

    申请号:US17810499

    申请日:2022-07-01

    CPC classification number: H04B1/62 H04B7/0456

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for performing wireless communication using digital post distortion, for example, with a large antenna array where the number of transmit antennas may be greater than a number of spatial streams. A transmitting device and a receiving device determine a perturbed precoding matrix based on a precoding perturbation rule. The transmitting device precodes a signal using the perturbed precoding matrix and transmits via the number of antennas greater than the number of spatial streams. The receiving device receives the signal and subtracts non-linearities from the received signal based on a channel estimation using the perturbed precoding matrix over one or more iterations.

    Decoder success predictor signaling for adjusting MIRS scheduling policy

    公开(公告)号:US11923977B1

    公开(公告)日:2024-03-05

    申请号:US17822560

    申请日:2022-08-26

    CPC classification number: H04L1/005 H03M13/1105 H03M13/611

    Abstract: A user equipment (UE) may transmit, to a network node, an indication of support for a decoder success prediction capability. The network node may obtain the indication of support by the UE for the decoder success prediction probability. The network node may output a transmission for the UE including one or more parameters based on the indication of support by the UE for the decoder success prediction capability. The UE may receive the transmission including one or more code blocks based on the indication of support for the decoder success prediction capability. The network node may optimize a multiple incremental redundancy scheme (MIRS) schedule for at least one of transmitting the transmission or retransmitting the transmission based on the indication of support by the UE for the decoder success prediction capability. The transmission may include the MIRS schedule.

    MULTIPLE INCREMENTAL REDUNDANCY SCHEME USING LINEAR RATELESS CODES

    公开(公告)号:US20240022350A1

    公开(公告)日:2024-01-18

    申请号:US17863283

    申请日:2022-07-12

    Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a first device may combine, for each of a set of sub-blocks of a block of data, a set of unencoded bits associated with a respective sub-block with a matrix to generate a set of encoded bits. The first device may transmit a first message including the block to a second device. The second device may determine respective probabilities of successful decoding of respective selected candidate codewords for the set of sub-blocks of the block based on receiving the first message and may transmit one or more indicators associated with one or more sub-blocks based on the respective probabilities of successful decoding of the respective selected candidate codewords. The first device may transmit a second message including redundancy information for the one or more sub-blocks based on transmitting the one or more indicators

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