Puncturing of LDPC codes in dependence on the modulation scheme
    32.
    发明公开
    Puncturing of LDPC codes in dependence on the modulation scheme 有权
    Punktierung von LDPC Kodes inAbhängigkeitdes Modulationsverfahrens

    公开(公告)号:EP2096761A1

    公开(公告)日:2009-09-02

    申请号:EP09153765.4

    申请日:2009-02-26

    IPC分类号: H03M13/11

    摘要: A method for encoding a channel in a communication system using a Low-Density Parity-Check (LDPC) code is provided. The method includes determining a number of parity bits for puncturing; dividing the parity bits at predetermined intervals, and determining a number of puncturing parity bits, which are subjected to puncturing within the predetermined intervals; determining a modulation scheme; determining positions of puncturing parity bits corresponding to the determined number of the puncturing parity bits within the predetermined intervals according to the modulation scheme; repeatedly performing puncturing on puncturing parity bits corresponding to the determined positions at the predetermined intervals; and transmitting remaining bits except for the punctured bits according to the modulation scheme.

    摘要翻译: 提供了一种使用低密度奇偶校验(LDPC)码在通信系统中对信道进行编码的方法。 该方法包括确定用于删截的奇偶校验位数; 以预定间隔分配奇偶校验位,并且确定在预定间隔内进行穿孔的删余奇偶校验位数; 确定调制方案; 根据所述调制方案确定在所述预定间隔内确定的所述删截奇偶校验位数的删截奇偶校验位的位置; 以预定间隔对与所确定的位置相对应的删截奇偶校验位重复执行删截; 以及根据调制方案发送除了穿孔位之外的剩余比特。

    Multiple antenna communication system using spatial pre-coding

    公开(公告)号:EP1780925B1

    公开(公告)日:2018-10-10

    申请号:EP06022705.5

    申请日:2006-10-31

    IPC分类号: H04L1/06 H04B7/08

    摘要: An apparatus for transmitting data in a base station of a wireless communication system that transmits data depending on channel status information fed back from terminals and uses a plurality of antennas. Based on the channel status information, a scheduler determines a terminal to which the base station will transmit data, determines antennas via which the base station will transmit data among the plurality of antennas, and determines a space pre-coding method. A multiplexer multiplexes transmission data into a plurality of data streams according to the number of the determined antennas. A modulation and coding unit performs modulation and coding on each of the data streams. A pre-coding controller outputs a matrix select signal for selecting one of a plurality of space pre-coding matrixes according to the space pre-coding method. A space pre-coder spatial-codes each of the coded streams with the matrix selected based on the matrix select signal. An OFDM modulator performs OFDM modulation on each of the spatial-coded streams. An RF unit transmits each of the OFDM-modulated streams via an associated antenna.