METHOD FOR TRANSMITTING SYNCHRONIZATION CHANNEL USING MULTI-ANTENNA
    4.
    发明申请
    METHOD FOR TRANSMITTING SYNCHRONIZATION CHANNEL USING MULTI-ANTENNA 有权
    使用多天线发送同步信道的方法

    公开(公告)号:US20110090997A1

    公开(公告)日:2011-04-21

    申请号:US12988302

    申请日:2009-04-17

    IPC分类号: H04L7/00

    摘要: A method for transmitting a synchronization channel using multi-antenna is disclosed. In a method for transmitting a synchronization channel for using a synchronization channel as a phase reference when decoding a broadcast channel, the method includes using a pre-decided shift value for each antenna, wherein the shift value is pre-decided with a user equipment, so as to apply circular shifts to sequences of the synchronization channel, and transmitting the sequences having the circular shifts applied thereto from a base station to the user equipment. Herein, space frequency/time block codes (SFBC/STBC) may be applied to the broadcast channel. In performing time/frequency domain synchronization in the synchronization channel, regardless of the number of transmission antennae used by the base station when transmitting signals, the synchronization process may be performed. Also, multi-antenna gain may be obtained when transmitting the synchronization channel. Furthermore, channel estimation may be performed for each antenna, and by applying transmission diversity methods to the BCH/control channel/data channel and so on, the performance of the present invention may also be enhanced.

    摘要翻译: 公开了一种使用多天线发送同步信道的方法。 在对广播频道进行解码的同步信道的同步信道的发送方法中,作为相位基准的方法,该方法包括对每个天线使用预定的移位值,其中,移位值由用户设备预先决定, 以便对同步信道的序列应用循环移位,并且将从基站向其发送的具有循环移位的序列发送给用户设备。 这里,空间频率/时间块码(SFBC / STBC)可以应用于广播频道。 在同步信道中执行时间/频域同步时,无论发射信号时基站使用的发射天线的数量如何,都可以执行同步处理。 此外,当发送同步信道时可以获得多天线增益。 此外,可以对每个天线执行信道估计,并且通过将传输分集方法应用于BCH /控制信道/数据信道等,也可以提高本发明的性能。

    Method of constructing a frame by multiplexing subframes having different CP length
    10.
    发明授权
    Method of constructing a frame by multiplexing subframes having different CP length 失效
    通过复用具有不同CP长度的子帧来构造帧的方法

    公开(公告)号:US08665907B2

    公开(公告)日:2014-03-04

    申请号:US13055658

    申请日:2009-08-26

    IPC分类号: H04J3/16

    CPC分类号: H04L27/2602 H04L27/2607

    摘要: The present invention relates to a broadband wireless access system, and more particularly, to a frame structure to which OFDM symbols having a cyclic prefix are transmitted. A method of constructing a frame in a broadband wireless access system according to one embodiment of the present invention comprises including one or more first subframes in the frame, the first subframes including a plurality of symbols having a cyclic prefix of a first length; and including one or more second subframes in the frame, the second subframes including a plurality of symbols having a cyclic prefix of a second length different from the first length, wherein the number of the first subframes and the number of the second subframes are determined considering an idle time for which effective symbols are not included in the frame.

    摘要翻译: 宽带无线接入系统技术领域本发明涉及宽带无线接入系统,更具体地,涉及发送具有循环前缀的OFDM符号的帧结构。 根据本发明的一个实施例的在宽带无线接入系统中构造帧的方法包括在帧中包括一个或多个第一子帧,第一子帧包括具有第一长度的循环前缀的多个符号; 并且在所述帧中包括一个或多个第二子帧,所述第二子帧包括具有不同于所述第一长度的第二长度的循环前缀的多个符号,其中所述第一子帧的数量和所述第二子帧的数量被考虑 有效符号不包括在帧中的空闲时间。