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    • 46. 发明申请
    • CLOSED-LOOP MIMO SYSTEMS AND METHODS
    • 闭环MIMO系统和方法
    • WO2007106980A1
    • 2007-09-27
    • PCT/CA2007/000414
    • 2007-03-19
    • NORTEL NETWORKS LIMITEDJIA, MingMA, JiangleiTONG, WenZHU, Peiying
    • JIA, MingMA, JiangleiTONG, WenZHU, Peiying
    • H04B7/04H04B7/005H04B7/208H04Q7/20
    • H04L5/0048H04B7/0417H04B7/0456H04B7/0634H04B7/0639H04L5/14H04L25/0204H04L25/0224H04L25/0242H04L25/03343H04L27/2601H04L27/2613H04L2025/03426H04L2025/03802
    • Methods, devices and systems are provided for transmitting and receiving MIMO signals. Transmitting of the MIMO signals involves pre-coding each of at least two data symbols using a respective pre-coding codeword to preclude a corresponding plurality of pre-coded data symbols. A respective signal is transmitted from each of a plurality of antennas, the respective signal including one of the pre-coded signals and at least one pilot for use in channel estimation. The signals collectively further include at least one beacon pilot vector consisting of a respective beacon pilot per antenna, the beacon pilot vector containing contents known to a receiver for use by the receiver in determining the codeword used to pre-code the at least one data signal. Receiving of the MIMO signals involves receiving a MIMO signal containing data symbols pre-coded with a codeword. The MIMO signal includes pilots, and including at least one beacon pilot vector containing contents known to a receiver/ each beacon pilot vector containing one symbol from each transmit antenna. Processing is performed on the at least one beacon pilot vector to determine which codeword was used to pre-code the data symbols.
    • 提供了发送和接收MIMO信号的方法,设备和系统。 MIMO信号的发送涉及使用相应的预编码码字预编码至少两个数据符号中的每一个,以排除对应的多个预编码数据符号。 相应的信号从多个天线中的每一个发送,各个信号包括一个预编码信号和至少一个导频,用于信道估计。 信号集体地进一步包括由每个天线的每个信标导频组成的至少一个信标导频向量,信标导频向量包含接收机已知的内容,以供接收机在确定用于对该至少一个数据信号进行预编码的码字时使用 。 接收MIMO信号涉及接收包含用码字预编码的数据符号的MIMO信号。 MIMO信号包括导频,并且包括至少一个信标导频向量,其包含每个发射天线包含一个符号的接收机/每个信标导频向量已知的内容。 对至少一个信标导频向量执行处理,以确定哪个码字用于对数据符号进行预编码。