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    • 3. 发明授权
    • Efficient MIMO transmission schemes
    • 高效的MIMO传输方案
    • US08385441B2
    • 2013-02-26
    • US12477152
    • 2009-06-03
    • Yona PeretsKrishna Srikanth GomadamAdoram ErellDaniel YellinEzer Melzer
    • Yona PeretsKrishna Srikanth GomadamAdoram ErellDaniel YellinEzer Melzer
    • H04L27/28
    • H04B7/0473H04L1/0009H04L1/0656H04L1/0675H04L5/0025
    • A method for communication includes, in a transmitter having a first number of transmit antenna ports, setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver. A precoding operation maps the spatial layers onto the transmit antenna ports. A first upper limit is set when the precoding operation depends on feedback from the given receiver. A second upper limit, which does not exceed the first upper limit, is set when the precoding operation is not dependent on the feedback.
    • 一种用于通信的方法包括:在具有第一数量的发射天线端口的发射机中,将发射机使用的第二数量的空间层的上限设置为小于第一数量。 空间层的实际数量(不超过上限)被分配用于传送给给定的接收机。 调制符号的一个或多个流被映射到所分配的实际数量的空间层上。 空间层的实际数量从发射机发射到给定的接收机。 预编码操作将空间层映射到发射天线端口上。 当预编码操作取决于给定接收机的反馈时,设置第一上限。 当预编码操作不依赖于反馈时,设置不超过第一上限的第二上限。
    • 7. 发明授权
    • Systems and methods for communication using dedicated reference signal (DRS)
    • 使用专用参考信号(DRS)进行通信的系统和方法
    • US08699528B2
    • 2014-04-15
    • US12983898
    • 2011-01-04
    • Adoram ErellDaniel Yellin
    • Adoram ErellDaniel Yellin
    • H04J1/16
    • H04B7/0617H04B7/0623H04L5/0023H04L5/0051H04L5/143H04L25/0204H04L25/0222H04L25/0226H04L25/0228H04L25/03343H04L2025/03414H04L2025/0342H04L2025/03426H04L2025/03796
    • A method for communication includes receiving in a receiver signals, which include one or more dedicated reference signals, that are transmitted from a transmitter over a communication channel in multiple blocks. The signals in each block, including the dedicated reference signals, are transmitted on a respective group of subcarriers over a respective time interval and are precoded using a respective precoding scheme that maps the signals onto multiple antenna ports of the transmitter. Based on the received signals, feedback is computed in the receiver with respect to the communication channel in each of multiple spectral sub-bands, and the feedback for the multiple spectral sub-bands is reported to the transmitter. One or more parameters of the communication channel are estimated jointly over the dedicated reference signals included in each of the spectral sub-bands for which the feedback is reported. The signals are decoded based on the estimated parameters.
    • 一种用于通信的方法包括在接收器中接收包括一个或多个专用参考信号的信号,所述信号通过多个块中的通信信道从发射机发送。 包括专用参考信号的每个块中的信号在相应的时间间隔上在相应的子载波组上发送,并且使用将信号映射到发射机的多个天线端口的相应预编码方案进行预编码。 基于接收的信号,在接收机中针对多个频谱子带中的每一个中的通信信道计算反馈,并且将多个频谱子带的反馈报告给发射机。 通过包括在报告反馈的每个频谱子带中的专用参考信号联合地估计通信信道的一个或多个参数。 信号根据估计的参数进行解码。
    • 10. 发明授权
    • Block encoding with a variable rate block code
    • 使用可变速率块码进行块编码
    • US08788918B2
    • 2014-07-22
    • US12365565
    • 2009-02-04
    • Daniel YellinAdoram ErellShahar Fattal
    • Daniel YellinAdoram ErellShahar Fattal
    • G06F11/00
    • H04L1/001H03M13/13H03M13/136H03M13/6356H03M13/6362H03M13/6525H04L1/0013H04L1/0057H04L1/0069
    • A control channel encoder includes a determiner configured to determine a current value of K for encoding control signals of a length M, wherein K is a function of a code rate for a data channel. A table generator is configured to, if K is greater than a predetermined threshold, generate a repeated matrix from a fixed block encoding matrix by variably repeating rows from said fixed block encoding matrix. A puncturer is configured to, if K is less than the predetermined threshold, puncture the fixed block encoding matrix to reduce a size of the fixed block encoding matrix. A block encoder is configured to utilize said repeated matrix, to encode M input control bits as K encoded control bits, by generating an encoded payload from said repeated matrix.
    • 控制信道编码器包括确定器,其被配置为确定用于编码长度为M的控制信号的K的当前值,其中K是数据信道的码率的函数。 如果K大于预定阈值,则表生成器被配置为:通过从所述固定块编码矩阵可变地重复行,从固定块编码矩阵生成重复矩阵。 如果K小于预定阈值,则穿刺器被刺穿固定块编码矩阵以减小固定块编码矩阵的大小。 块编码器被配置为利用所述重复矩阵,通过从所述重复矩阵生成编码的有效载荷来将M个输入控制位编码为K个编码的控制位。