Rank Adaptive Cyclic Shift for Demodulation Reference Signal
    1.
    发明申请
    Rank Adaptive Cyclic Shift for Demodulation Reference Signal 审中-公开
    用于解调参考信号的自适应循环移位

    公开(公告)号:US20110142107A1

    公开(公告)日:2011-06-16

    申请号:US12813594

    申请日:2010-06-11

    IPC分类号: H04B17/00 H04B1/38

    摘要: Systems and methods for generating a demodulation reference signal for use by user equipment configured with multiple antennas based on a rank of an antenna or an antenna port are disclosed. A rank for a user equipment device is determined indicating the number of spatial layers or antenna ports in use, and the value of the rank is used to generate a cyclic shift offset and a cyclic shift, that can then be used to generate a demodulation reference signal to be used in timeslots within each spatial layer of an uplink transmission. Orthogonal cover codes may be used in conjunction with a determined cyclic shift to generate a demodulation reference signal.

    摘要翻译: 公开了一种用于生成基于天线或天线端口的等级配置有多个天线的用户设备使用的解调参考信号的系统和方法。 确定用户设备设备的等级,指示正在使用的空间层或天线端口的数量,并且使用该等级的值来产生循环移位偏移和循环移位,然后可以用于产生解调参考 信号用于上行链路传输的每个空间层内的时隙。 正交覆盖码可以与确定的循环移位结合使用,以产生解调参考信号。

    COMBINED OPEN LOOP/CLOSED LOOP (CQI-BASED) UPLINK TRANSMIT POWER CONTROL WITH INTERFERENCE MITIGATION FOR E-UTRA
    2.
    发明申请
    COMBINED OPEN LOOP/CLOSED LOOP (CQI-BASED) UPLINK TRANSMIT POWER CONTROL WITH INTERFERENCE MITIGATION FOR E-UTRA 有权
    用于E-UTRA的干扰减轻的组合的开环/闭环(基于CQI的)上行发射功率控制

    公开(公告)号:US20080081655A1

    公开(公告)日:2008-04-03

    申请号:US11862459

    申请日:2007-09-27

    IPC分类号: H04B7/005

    摘要: A combined open loop and closed loop (channel quality indicator (CQI)-based) transmit power control (TPC) scheme with interference mitigation for a long term evolution (LTE) wireless transmit/receive unit (WTRU) is disclosed. The transmit power of the WTRU is derived based on a target signal-to-interference noise ratio (SINR) and a pathloss value. The pathloss value pertains to the downlink signal from a serving evolved Node-B (eNodeB) and includes shadowing. An interference and noise value of the serving eNodeB is included in the transmit power derivation, along with an offset constant value to adjust for downlink (DL) reference signal power and actual transmit power. A weighting factor is also used based on the availability of CQI feedback.

    摘要翻译: 公开了一种组合开环和闭环(基于信道质量指示符(CQI))的发射功率控制(TPC)方案,其具有用于长期演进(LTE)无线发射/接收单元(WTRU)的干扰减轻。 基于目标信号与干扰噪声比(SINR)和路径损耗值来导出WTRU的发射功率。 路径损耗值属于来自服务演进节点B(eNodeB)的下行链路信号,并且包括阴影。 服务eNodeB的干扰和噪声值包括在发射功率推导中,以及用于调整下行链路(DL)参考信号功率和实际发射功率的偏移常数值。 还基于CQI反馈的可用性来使用加权因子。

    METHOD AND APPARATUS FOR EFFICIENT CONFIGURATION OF HYBRID SUB-CARRIER ALLOCATION
    3.
    发明申请
    METHOD AND APPARATUS FOR EFFICIENT CONFIGURATION OF HYBRID SUB-CARRIER ALLOCATION 审中-公开
    混合子载波分配的有效配置的方法和装置

    公开(公告)号:US20070149249A1

    公开(公告)日:2007-06-28

    申请号:US11608477

    申请日:2006-12-08

    IPC分类号: H04B1/38

    摘要: In an orthogonal frequency division multiple access (OFDMA) system including at least one base station and at least one wireless transmit/receive unit (WTRU), sub-carriers are allocated for data transmissions to multiple access WTRUs, where sub-carriers are allocated according to a consecutive sub-carrier allocation (CSA) type and a distributed sub-carrier allocation (DSA) type. Pilot signals with distributed pilot sub-carriers are transmitted and measured at each WTRU to obtain a channel quality metric for each pilot sub-carrier. Each WTRU sends feedback to the base station reporting channel quality based on the measured channel quality metrics. An allocation type is selected and adaptively switched according to channel variations in time and frequency domain.

    摘要翻译: 在包括至少一个基站和至少一个无线发射/接收单元(WTRU)的正交频分多址(OFDMA)系统中,分配了用于向多个接入WTRU进行数据传输的子载波,其中根据 连续的子载波分配(CSA)类型和分布式子载波分配(DSA)类型。 在每个WTRU处,发射和测量具有分布式导频子载波的导频信号,以获得每个导频子载波的信道质量度量。 每个WTRU基于所测量的信道质量度量向基站报告信道质量的反馈。 根据时域和频域的频道变化选择分配类型并进行自适应切换。

    METHOD AND APPARATUS FOR IMPROVED SPATIAL TEMPORAL TURBO CHANNEL CODING (STTCC) USING EIGEN-BEAMFORMING
    6.
    发明申请
    METHOD AND APPARATUS FOR IMPROVED SPATIAL TEMPORAL TURBO CHANNEL CODING (STTCC) USING EIGEN-BEAMFORMING 失效
    用于改进空间波纹通道编码(STTCC)的方法和装置使用EIGEN-BEAMFORMING

    公开(公告)号:US20070291868A1

    公开(公告)日:2007-12-20

    申请号:US11760266

    申请日:2007-06-08

    IPC分类号: H04L1/02

    摘要: The present invention is a method and apparatus for improving the performance of spatial temporal turbo channel coding (STTCC) used in multiple-input multiple-output (MIMO) wireless communication systems called eigen-STTCC (E-STTCC) that employs eigen-beamforming to make use of orthogonal eigen streams in the MIMO channel. Singular value decomposition (SVD) is applied to the channel matrix producing a linear precoding matrix containing the orthonormal basis for the eigen streams. In a first embodiment, the turbo encoded codeword containing concatenated systematic and parity bits is precoded with the linear precoding matrix such that the systematic bits are transmitted over the eigen streams with highest power. In a second embodiment, the codeword is made up of interleaved systematic bits and parity bits prior to eigen beamform preceding, effectively interleaving the systematic and data bits spatially over the eigen streams. In an alternate embodiment, the data stream is interleaved at the input to the encoder.

    摘要翻译: 本发明是一种用于改善在称为特征STTCC(E-STTCC)的多输入多输出(MIMO)无线通信系统中使用的空间时间turbo信道编码(STTCC)的性能的方法和装置,其使用特征波束形成 利用MIMO信道中的正交本征流。 将奇异值分解(SVD)应用于产生包含本征流的正交基的线性预编码矩阵的信道矩阵。 在第一实施例中,包含连接的系统和奇偶校验位的turbo编码码字用线性预编码矩阵进行预编码,使得系统比特在具有最高功率的本征流上传输。 在第二实施例中,码字由在本征波束形成之前的交织的系统比特和奇偶校验位组成,有效地将系统和数据比特空间地交织在本征流上。 在替代实施例中,数据流在编码器的输入处交错。