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    • 32. 发明授权
    • Combined space-time decoding
    • 组合时空解码
    • US07394860B2
    • 2008-07-01
    • US10263268
    • 2002-10-02
    • Wen TongMing JiaJianglei MaPeiying ZhuDong-Sheng Yu
    • Wen TongMing JiaJianglei MaPeiying ZhuDong-Sheng Yu
    • H04B7/02H04L1/02
    • H04L1/0618
    • The present invention relates to decoding space time coded (STC) signals transmitted from a number of transmit antennas. First, a separate detection technique is used to determine initial decoding solutions corresponding to the symbols transmitted from each of a number of transmit antennas at a given time. For each initial solution, a limited area about the initial solution is defined. Each of the limited areas will correspond to regions including constellation points proximate the initial solution. The initial solutions are used to define a limited, multi-dimensional space. Accordingly, the initial solutions are used to reduce the search complexity associated with joint decoding by defining a limited space about the initial solutions. Finally, a joint decoding technique is implemented within the limited space to find a final solution.
    • 本发明涉及解码从多个发射天线发射的空时编码(STC)信号。 首先,使用单独的检测技术来确定在给定时间从与多个发射天线中的每一个发送的符号相对应的初始解码解。 对于每个初始解决方案,定义关于初始解决方案的有限区域。 每个有限区域将对应于包括邻近初始解决方案的星座点的区域。 初始解决方案用于定义有限的多维空间。 因此,初始解决方案用于通过定义关于初始解决方案的有限空间来减少与联合解码相关联的搜索复杂度。 最后,在有限的空间内实现联合解码技术,找到最终解决方案。
    • 38. 发明授权
    • Precoding in high-order MIMO
    • 高阶MIMO中的预编码
    • US09325538B2
    • 2016-04-26
    • US12339568
    • 2008-12-19
    • Ming JiaJianglei MaPeiying ZhuWen Tong
    • Ming JiaJianglei MaPeiying ZhuWen Tong
    • H04B7/02H04L25/03H04B7/04H04B7/06
    • H04B7/0456H04B7/0417H04B7/0465H04B7/063H04L25/03343
    • A high-order Multiple-Input-Multiple-Output (MIMO) transmitter implementing a covariance-based precoding scheme that exploits transmit channel correlation and a method of operation thereof are provided. In one embodiment, covariance-based precoding is performed at the high-order MIMO transmitter based on feedback from a remote high-order MIMO receiver regarding a covariance-based precoding matrix. The covariance-based precoding matrix is, or is derived from, a transmit channel correlation matrix determined by the high-order MIMO receiver for the high-order MIMO transmitter. The covariance-based precoding provides a beam-forming effect when there is a relatively high degree of transmit channel correlation, thereby improving performance of the high-order MIMO transmitter. Further, because changes in the transmit channel correlation occur relatively slowly over time, feedback overhead requirements are substantially reduced as compared to that required for traditional MIMO precoding schemes.
    • 提供了实现利用发射信道相关的协方差预编码方案的高阶多输入多输出(MIMO)发射机及其操作方法。 在一个实施例中,基于基于协方差的预编码矩阵的来自远程高阶MIMO接收机的反馈在高阶MIMO发射机处执行基于协方差的预编码。 基于协方差的预编码矩阵是由或由高阶MIMO发射机的高阶MIMO接收机确定的发射信道相关矩阵导出的。 当存在相对较高程度的发射信道相关性时,基于协方差的预编码提供波束形成效应,从而提高高阶MIMO发射机的性能。 此外,由于与传统MIMO预编码方案相比,发射信道相关性的变化随时间发生相对较慢,所以反馈开销要求显着降低。