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    • 7. 发明公开
    • WIRELESS COMMUNICATION SYSTEM AND RECEIVER APPARATUS
    • DRAHTLOSES KOMMUNIKATIONSSYSTEM UNDEMPFÄNGERVORRICHTUNG
    • EP2555454A1
    • 2013-02-06
    • EP11762842.0
    • 2011-03-29
    • Sharp Kabushiki Kaisha
    • TOMEBA, HiromichiNAKAMURA, OsamuTOH, Shinpei
    • H04J99/00H04B7/04H04J11/00
    • H04L25/0226H04L25/0204H04L25/022H04L25/0228H04L27/2647
    • A radio communication system includes a multiple number of transmitting apparatus and a receiving apparatus including a multiple number of receive antennas, in which the transmitting apparatus generates a reference signal that is obtained by adding a different time shift to a known signal between the transmitting apparatus and the receiving apparatus, multiplexes a data signal with the reference signal and transmits the resultant signal. The receiving apparatus separates reference signals multiplexed on the signals received from the multiple transmitting apparatus, and estimates channel information from the reference signals, which have been transmitted through common frequencies in part or whole of the signal spectra. Then, the data signal is decoded based on the estimated channel information. As a result, it is possible to provide a radio communication system and the like using an uplink MU-MIMO transmission system that permits partial spatial multiplexing of signal spectra, without adding a significant change to the transmitting apparatus of existing users.
    • 一种无线电通信系统包括多个发送装置和包括多个接收天线的接收装置,其中发送装置生成通过将不同的时移添加到发送装置和发送装置之间的已知信号而获得的参考信号, 接收装置将数据信号与参考信号进行复用,并发送所得到的信号。 接收装置分离从多个发送装置接收到的信号多路复用的参考信号,并且从信号频谱的一部分或全部通过公共频率发送的参考信号估计信道信息。 然后,基于估计的信道信息对数据信号进行解码。 结果,可以使用允许信号频谱的部分空间复用的上行链路MU-MIMO传输系统来提供无线电通信系统等,而不会对现有用户的发送装置增加显着变化。