Systems and Methods for Waveform Selection and Adaptation

    公开(公告)号:US20180248645A1

    公开(公告)日:2018-08-30

    申请号:US15965144

    申请日:2018-04-27

    Abstract: Systems, methods, and apparatuses for providing waveform adaptation are provided. In an example, a method is provided for identifying a plurality of candidate waveforms, and selecting one of the candidate waveforms for data transmission. The candidate waveforms may be identified in accordance with one or more criteria, such as a transmission capability of the transmitting device, a reception capability of the receiving device, a desired Peak-to-Average-Power-Ratio (PAPR) characteristic, adjacent channel interference (ACI) rejection requirements, spectrum localization requirements, and other criteria. The waveform selected for data transmission may be selected in accordance with one or more waveform selection criteria, such as traffic characteristic, application types, etc.

    System and Method for High-Rate Sparse Code Multiple Access in Downlink

    公开(公告)号:US20170127423A1

    公开(公告)日:2017-05-04

    申请号:US15365332

    申请日:2016-11-30

    CPC classification number: H04W72/0466 H04J13/0007 H04L1/00 H04L1/004 H04W88/02

    Abstract: Higher rates of data communication may be utilized for downlink than for uplink. However, the decoding complexity of Sparse Code Multiple Access (SCMA) may become prohibitive for very high rates, resulting from, for example, a large number of layers, for very large constellations, or a combination of the two. Methods and transmitters are provided herein for transmitting that has been generated to reduce complexity at the receiver and methods and receivers are provided herein for receiving and decoding a received signal with reduced complexity. The reduced complexity in part is provided by the ability to maintain real and imaginary parts of a transmitted signal independent from one another.

    System and Method for Pilot Signal Transmission

    公开(公告)号:US20170111147A1

    公开(公告)日:2017-04-20

    申请号:US15290652

    申请日:2016-10-11

    CPC classification number: H04L27/2613 H04L5/0051

    Abstract: Longer pilot sequences can be supported by transmitting pilot values of a given pilot sequence over different orthogonal frequency division multiplexed (OFDM) symbols of an uplink frame. The pilot values may be contiguous, or non-contiguous, with one another in the time domain. Consecutive pilot values in a pilot sequence may be transmitted in different OFDM symbols of the frame. For example, odd pilot values (e.g., P1, P3, P5 . . . ) in a pilot sequence may be transmitted over a different OFDM symbol than even pilot values (e.g., P2, P4, P6 . . . ) in the pilot sequence. Alternatively, a leading subset of pilot values in a pilot sequence is transmitted over a different OFDM symbol than a trailing subset of pilot values in the pilot sequence.

    System and Method for Generating Codebooks with Small Projections per Complex Dimension and Utilization Thereof
    26.
    发明申请
    System and Method for Generating Codebooks with Small Projections per Complex Dimension and Utilization Thereof 审中-公开
    用于生成每个复杂维度和利用率的小投影码本的系统和方法

    公开(公告)号:US20160049999A1

    公开(公告)日:2016-02-18

    申请号:US14825886

    申请日:2015-08-13

    Abstract: A method for data transmission by a device in a communication system includes modulating a first data stream using a codebook to produce a second data stream, wherein the codebook is in correspondence with a multi-dimensional modulation map that includes a number of distinct projections per complex dimension that is smaller than a number of modulation points of the multi-dimensional modulation map, and transmitting the second data stream over allocated resources in the communication system.

    Abstract translation: 一种用于通信系统中的设备进行数据传输的方法包括使用码本调制第一数据流以产生第二数据流,其中所述码本与多维调制映射相对应,所述多维调制映射包括每个复数的多个不同的投影 尺寸小于多维调制图的调制点的数量,并且通过分配的资源在通信系统中发送第二数据流。

    METHODS AND APPARATUS FOR SPATIAL DOMAIN MULTIPLEXING OF SENSING SIGNAL AND COMMUNICATION SIGNAL

    公开(公告)号:US20250167940A1

    公开(公告)日:2025-05-22

    申请号:US18925484

    申请日:2024-10-24

    Abstract: Some embodiments of the present disclosure provide for multiplexing sensing signals and communication signals in a spatial domain, a frequency domain and a time domain. In some instances, a sensing signal may be used for communication. Signals of three types are considered: communication-only; sensing-only; and joint sensing and communication. The types of signals may be distinguished by their waveform and/or numerology configurations. Spatial domain multiplexing may be enabled by establishing an association between a three-dimensional resource block and a signal configuration. The three-dimensional resource block may be defined using a spatial domain element, a frequency domain element and a time domain element.

    METHODS AND APPARATUS FOR SENSING-ASSISTED DOPPLER COMPENSATION

    公开(公告)号:US20250097885A1

    公开(公告)日:2025-03-20

    申请号:US18941772

    申请日:2024-11-08

    Abstract: Aspects of the present application relate to sensing-based, mobility-aware waveform adaptation. A transmitting device may estimate a velocity vector for a mobile device. The velocity vector estimate may be based on measurements made at the mobile device and fed back to the transmitting device or based on measurements made at other devices in the environment and provided to the transmitting device. The transmitting device may, based on the estimate of the velocity vector, obtain a Doppler variable estimate for a signal path between the transmitting device and the mobile device. The transmitting device may then adapt a to-be-transmitted waveform based on the Doppler variable estimate for the signal path and then transmit the adapted waveform. Occasionally, the transmitting device may obtain updates to parameters that describe the location and mobility of the mobile device. On the basis of the updates, the transmitting device may update the waveform adaptation.

    METHOD, APPARATUS, AND SYSTEM FOR MULTI-STATIC SENSING AND COMMUNICATION

    公开(公告)号:US20240413947A1

    公开(公告)日:2024-12-12

    申请号:US18813420

    申请日:2024-08-23

    Abstract: Some embodiments of the present disclosure provide a scheme for multiplexing of sensing pilot signals and data content signals. For example, some embodiments include obtaining, at a sensing pilot signal transmitting node, a time-frequency pattern specific to the sensing pilot signal transmitting node. The time-frequency pattern indicates, for a first plurality of resource blocks, a second plurality of resource blocks that are to be used for transmitting a plurality of sensing pilot signals, and a sensing pilot signal parameter for each sensing pilot signal among the plurality of sensing pilot signals. Some embodiments further include transmitting, to a sensing pilot signal receiving node and in accordance with the time-frequency pattern, a particular sensing pilot signal among the plurality of sensing pilot signals.

    METHOD AND APPARATUS FOR TRANSMIT AND RECEIVE BEAM DETERMINATION

    公开(公告)号:US20240322875A1

    公开(公告)日:2024-09-26

    申请号:US18679047

    申请日:2024-05-30

    CPC classification number: H04B7/0617

    Abstract: Aspects of the present disclosure enable determination of a transmit beamformer used for data transmission. The determination of the transmit beam is based on beamformed reference signals (e.g., CSI-RS, SSB) transmitted by the transmitter, such as a base station, and received by the receiver, such as a UE. The receiver feeds back information based on an angle of arrival (AoA) of the beamformed reference signal to help the transmitter determine a transmit beamformer used by the transmitter to transmitter data to the receiver. In some embodiments, the feedback information may include a projection of an angle of arrival at the receiver of a propagation path have a strongest measures reference signal on a receive beamformer. In some embodiments, the feedback information may include a beamformer to be used at the transmitter, that has been determined at the receiver.

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