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    • 11. 发明申请
    • CODEBOOK SEARCHING APPARATUS AND METHOD THEREOF
    • CODEBOOK SEARCHING APPARATUS及其方法
    • US20110038433A1
    • 2011-02-17
    • US12608005
    • 2009-10-29
    • Cheng-Ming ChenYen-Liang ChenPang-An TingAn-Yu Wu
    • Cheng-Ming ChenYen-Liang ChenPang-An TingAn-Yu Wu
    • H04L27/28
    • H04L25/03828
    • Exemplary embodiments of the present disclosure propose multiple codebook searching methods for a receiver in a communication system, wherein the communication system uses a codebook having L pre-coding matrices. First, L matrices are calculated according to the L pre-coding matrices, and the L matrices are inversed mean square error matrices of the L pre-encoding matrices. Then, diagonal cofactors or determinants of at least S matrices of the L matrices are calculated, and a pre-coding matrix used by the receiver is found according to the maximum cofactors of the diagonal of the at least S matrices or ratios between the maximum cofactors of the diagonals and the determinants of the at least S matrices.
    • 本公开的示例性实施例提出了用于通信系统中的接收机的多个码本搜索方法,其中通信系统使用具有L个预编码矩阵的码本。 首先,根据L个预编码矩阵计算L个矩阵,并且L个矩阵是L个预编码矩阵的倒数均方误差矩阵。 然后,计算L个矩阵的至少S个矩阵的对角辅助因子或行列式,并且根据至少S个矩阵的对角线的最大辅因子或最大辅因子之间的比率,找到由接收器使用的预编码矩阵 的对角线和至少S个矩阵的决定因素。
    • 13. 发明申请
    • Transmitter and the Method Therefor
    • 发射机及其方法
    • US20100166105A1
    • 2010-07-01
    • US12643042
    • 2009-12-21
    • Jia-Hao WuYun-Yi ShihPang-An TingMing-Che Lin
    • Jia-Hao WuYun-Yi ShihPang-An TingMing-Che Lin
    • H04L27/00
    • H04L27/262
    • A transmitter and the method therefor are provided. The transmitter is applied in an orthogonal frequency division multiplexing (OFDM) based or other multicarrier communication systems. The transmitter uses N sub-carriers. Among the N sub-carriers, L sub-carriers (or tones) are reserved for PAPR reduction. L is less than N. The method includes the following steps. Original frequency domain data symbols are generated and fed into the reserved-tone symbol generation unit. The reserved-tone symbols are generated by using pure frequency domain signal processing. Then the reserved-tone symbols are combined with original data symbols to generate combined PAPR reduction signal. The resultant PAPR reduction signal can be fed into reserved-tone symbol generation unit iteratively to obtain updated reserved-tone symbols. For proper iterations, the original data symbols combined with L frequency domain reserved-tone symbols will result in lower PAPR transmit signal.
    • 提供了一种发射机及其方法。 发射机应用于基于正交频分复用(OFDM)或其他多载波通信系统中。 发射机使用N个子载波。 在N个子载波中,L个子载波(或音调)被保留用于减少PAPR。 L小于N.该方法包括以下步骤。 生成原始频域数据符号并将其馈送到保留音符号生成单元。 通过使用纯频域信号处理产生保留音符号。 然后将保留音符号与原始数据符号组合以产生组合的PAPR减少信号。 所得到的PAPR降低信号可以迭代地馈送到保留音符号生成单元中以获得更新的保留音符号。 对于正确的迭代,与L个频域保留音符号组合的原始数据符号将导致较低的PAPR发送信号。