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    • 6. 发明授权
    • Method of and apparatus for space-time-frequency coding
    • 时空编码方法及装置
    • US08422580B2
    • 2013-04-16
    • US12303749
    • 2007-05-30
    • Gang WuQi ZhouNi MaXiaobo Zhang
    • Gang WuQi ZhouNi MaXiaobo Zhang
    • H04B7/02H04L27/00H03C7/02
    • H04L1/0662H04L1/0606H04L27/2601
    • A space-time-frequency encoding scheme, for use in wireless communication systems, transforms a plurality of input element pairs into a plurality orthogonal element pairs, each of the plurality of input element pairs and corresponding orthogonal element pairs forming an orthogonal matrix. A first element, second element and a duplicate of the second element in each of the plurality of input element pairs and corresponding orthogonal element pairs are mapped as channel elements to three predetermined time-frequency cells in respective first and second two-dimension time-frequency matrixes for transmission via different antennas. As the input element pairs and corresponding orthogonal element pairs, transmitted via different antennas, are orthogonal in both the space-time domain and the space-frequency domain at the same time, two-dimension space-time transmit diversity gain and space-frequency transmit diversity gain can be achieved at the same time.
    • 用于无线通信系统的时空编码方案将多个输入元件对变换成多个正交元件对,多个输入元件对中的每一个以及形成正交矩阵的对应正交元件对。 多个输入元件对和对应的正交元素对中的每一个中的第二元素的第一元素,第二元素和副本被映射为在相应的第一和第二二维时间频率中的三个预定时间单元的信道元素 用于通过不同天线传输的矩阵。 由于通过不同天线发送的输入元件对和对应的正交元件对同时在时空域和空间域两者都是正交的,二维时空发射分集增益和空频发射 可以同时实现分集增益。
    • 7. 发明申请
    • METHOD AND APPARATUS OF SPACE-TIME-FREQUENCY CODING
    • 空时编码的方法与装置
    • US20100232532A1
    • 2010-09-16
    • US12303749
    • 2007-05-30
    • Gang WuQi ZhouNi MaXiaobo Zhang
    • Gang WuQi ZhouNi MaXiaobo Zhang
    • H04B7/02
    • 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,它首先将多个输入元件对分别变换为多个正交元素对,多个输入元件对中的每一个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。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A DATA BLOCK IN A WIRELESS COMMUNICATION SYSTEM
    • 用于在无线通信系统中发送和接收数据块的方法和装置
    • US20090067424A1
    • 2009-03-12
    • US12280998
    • 2007-02-15
    • Xiaobo ZhangQi ZhouNi MaLudovicus Marinus Gerardus Maria Tolhuizen
    • Xiaobo ZhangQi ZhouNi MaLudovicus Marinus Gerardus Maria Tolhuizen
    • H04L12/56
    • H04L1/1819H04L1/0057H04L1/1607
    • The invention provides methods and apparatus for transmitting and receiving a source data block in a wireless communication system using hybrid automatic retransmission request protocol. According to the scheme provided by the invention, at transmitting side, the source data block or part of source data block that is not decoded correctly at receiving side is divided into a plurality of data segments, each the plurality of data segments may be paded with known data to expand the data segments to be a predetermined lengthen, the data segment is encoded with linear code to be a data packet including the data segment and a redundancy information segment or including only redundancy information, and after that the encoded data packets are transmitted. At the receiving side, when each of the received data packets includes a data segment and a redundancy information segment, decoding is performed directly based on the received data packet, decoding is performed based on the received redundancy information segment and an data segment and redundancy information segment extracted from buffered data packets with a first and second chance to restore the data segment that is not decoded correctly in previous decoding processing. With the additional decoding chance, the scheme provided by the invention can improve decoding probability and thus the transmission efficiency of the system.
    • 本发明提供了使用混合自动重传请求协议在无线通信系统中发送和接收源数据块的方法和装置。 根据本发明提供的方案,在发送侧,将源数据块或接收侧未正确解码的源数据块的一部分划分为多个数据段,每个数据段可以用 将数据段扩展为预定延长的已知数据,将数据段用线性码编码为包括数据段和冗余信息段的数据分组,或仅包括冗余信息,之后传送编码数据分组 。 在接收侧,当每个接收的数据分组包括数据段和冗余信息段时,基于接收的数据分组直接进行解码,基于所接收的冗余信息段和数据段和冗余信息进行解码 从缓冲的数据分组提取的段具有第一和第二机会,以恢复在先前的解码处理中未正确解码的数据段。 利用附加的解码机会,本发明提供的方案可以提高系统的解码概率和传输效率。