MULTI-ANTENNA COMMUNICATION DEVICE AND MULTI-ANTENNA COMMUNICATION METHOD
    5.
    发明公开
    MULTI-ANTENNA COMMUNICATION DEVICE AND MULTI-ANTENNA COMMUNICATION METHOD 有权
    随着对多个天线进行通信的多天线和方法通信设备

    公开(公告)号:EP2424142A1

    公开(公告)日:2012-02-29

    申请号:EP09842249.6

    申请日:2009-03-26

    申请人: Fujitsu Limited

    发明人: WU, Jianming

    摘要: To reduce an error rate of received data, a MIMO processing unit (202) receives data transmitted from a transmitter via antennas (201-0 to 201-3) and separates packets of layers 0 to 3 transmitted from respective antennas of the transmitter. Maximal ratio combining units (203-0 to 203-3) perform maximal ratio combining on duplicate portions of packets of the layers 0 to 3. Turbo decoding units (204-0 to 204-3) perform turbo decoding on packets of the layers 0 to 3 in which respective duplicate portions are maximal-ratio-combined. A soft-decision value combining unit (205) combines soft-decision values for respective information bits of the layers 0 to 3 obtained as a result of turbo decoding on packets of the layers 0 to 3 by the turbo decoding units (204-0 to 204-3). A hard-decision unit (206) obtains hard-decision values corresponding to respective information bits of the layers 0 to 3 in the transmitter.

    摘要翻译: 为了减少错误接收的数据的速率,MIMO处理部(202)从发射机通过天线(201-0至201-3)和层0至3反从发射机的respectivement天线mitted的单独的数据包接收数据反mitted。 最大比组合单元(203-0至203-3)执行最大比率上的各层0〜3的Turbo解码单元(204-0至204-3)上的各层0分组执行turbo解码的分组的重复部分结合 〜3中respectivement重复部分是最大比合并。 软判决值合成部(205)结合了软判决值0至3获得如turbo解码的由turbo解码单元中的层0的数据包到3的结果,各层的respectivement信息位(204-0到 204-3)。 硬判定单元(206)获得硬判决值相对应的发射器到0 respectivement层的信息比特为3。

    Methods and apparatus for reducing error floors in message passing decoders
    6.
    发明公开
    Methods and apparatus for reducing error floors in message passing decoders 审中-公开
    用于减少消息传递解码器中错误底限的方法和设备

    公开(公告)号:EP2270988A2

    公开(公告)日:2011-01-05

    申请号:EP10009561.1

    申请日:2004-12-17

    发明人: Richardson, Tom

    IPC分类号: H03M13/11 H03M13/29

    摘要: An iterative message passing decoder, e.g., an LDPC decoder, operating in conjunction with a soft input-soft output signal processing unit, e.g., an ISI detector, has an error floor performance region influenced by the decoder's sub-optimal message passing nature. Error floor reduction is achieved by a simple message re-initialization mechanism. Decoder edge states, e.g., constraint to variable node messages in decoder memory, are reinitialized, e.g., for an iteration, during the decoding after soft values provided by signal processing unit have improved.; During the message re-initialization and for some subsequent amount of iterative decoder processing, extrinsic information fed back from the decoder to the signal processing unit and/or soft values delivered to the decoder from the signal processing unit, in an outer communications loop, is temporarily frozen, e.g., using a switch and a buffer. Then, the outer communications loop is restored as the decoding continues, achieving improved decoding performance.

    摘要翻译: 与软输入软输出信号处理单元(例如ISI检测器)一起工作的迭代消息传递解码器(例如LDPC解码器)具有受解码器的次优消息传递性质影响的错误底板性能区域。 通过简单的消息重新初始化机制可以实现错误底层减少。 解码器边缘状态,例如对解码器存储器中变量节点消息的约束,在信号处理单元提供的软值已经改善之后,在解码期间重新初始化,例如迭代。 在消息重新初始化期间以及对于一些随后的迭代解码器处理量期间,在外部通信环路中,从解码器反馈到信号处理单元的外部信息和/或从信号处理单元递送到解码器的软值是 暂时冻结,例如使用开关和缓冲器。 然后,随着解码的继续,外部通信环路被恢复,实现改进的解码性能。

    METHOD AND APPARATUS FOR PROVIDING ADAPTIVE CYCLIC REDUNDANCY CHECK COMPUTATION
    8.
    发明公开
    METHOD AND APPARATUS FOR PROVIDING ADAPTIVE CYCLIC REDUNDANCY CHECK COMPUTATION 审中-公开
    方法和设备提供自适应CRC计算

    公开(公告)号:EP2210344A2

    公开(公告)日:2010-07-28

    申请号:EP08842000.5

    申请日:2008-10-23

    IPC分类号: H03M13/09

    摘要: A method and apparatus for providing adaptive cyclic redundancy check (CRC) computation is disclosed. A transport block size is determined. Transport block (TB) CRC bits are computed with a first CRC generator when the TB size is less than or equal to a predetermined threshold. TB CRC bits are computed with a second CRC generator when the transport block size is greater than the predetermined threshold. When the TB is greater than the predetermined threshold, the TB is segmented into code blocks (CBs) and CB CRC bits are computed with the first CRC generator. A method and apparatus for handling adaptively cyclic redundancy check (CRC) encoded transport blocks (TBs) is also disclosed. A TB is received. The TB is CRC checked based on a first CRC generator when the TB size is less than or equal to a predetermined threshold. Code blocks of the TB are CRC checked based on the first CRC generator when the TB size is greater than the predetermined threshold. When the TB size is greater than the predetermined threshold, the code blocks are concatenated, and the TB is CRC checked based on a second CRC generator.