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    • 7. 发明申请
    • METHOD AND APPARATUS OF SPACE-TIME-FREQUENCY CODING
    • 空时编码的方法与装置
    • WO2007141710A1
    • 2007-12-13
    • PCT/IB2007/052027
    • 2007-05-30
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.WU, GangZHOU, QiMA, NiZHANG, Xiaobo
    • WU, GangZHOU, QiMA, NiZHANG, Xiaobo
    • H04L1/06
    • H04L1/0662H04L1/0606H04L27/2601
    • The invention relates to a space-time-frequency encoding for use in wireless communication systems. According to the encoding scheme provided by the invention, it first transforms a plurality of input element pairs into a plurality orthogonal element pairs respectively, each of the plurality of input element pairs and corresponding orthogonal element pair forming an orthogonal matrix; and then maps the first element, second element and the redundancy of the second element in each of the plurality of input element pairs and corresponding orthogonal element pair as channel elements to three predetermined time-frequency cells in a first and second two-dimension time-frequency matrix so as to make the channel elements in the first and second matrixes suitable for being transmitted via different antennas. As the redundant input element pairs and corresponding orthogonal element pairs transmitted via different antenna are orthogonal in both space-time domain and space-frequency domain at the same time, and thus two-dimension space-time transmit diversity gain and space-frequency transmit diversity gain can be achieved at the same time.
    • 本发明涉及用于无线通信系统的时空编码。 根据本发明提供的编码方案,首先将多个输入元素对分别变换为多个正交元素对,分别形成多个输入元素对和对应的正交元素对,形成正交矩阵; 然后将第一元素,第二元素和多个输入元素对中的每一个中的第二元素的冗余和对应的正交元素对作为信道元素映射到第一和第二二维时间单元中的三个预定时间单元, 频率矩阵,以使第一和第二矩阵中的信道单元适合于经由不同的天线发送。 由于通过不同天线发送的冗余输入元件对和相应的正交元件对同时在空时域和空间频域两者都正交,因此二维空时发射分集增益和空间 - 频率发射分集 增益可以同时实现。