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    • 5. 发明申请
    • Efficient address generation for interleaver and de-interleaver
    • 交织器和解交织器的高效地址生成
    • US20030097621A1
    • 2003-05-22
    • US10012834
    • 2001-11-12
    • Weizhuang Xin
    • G06F011/00
    • H04L1/0071H03M13/2732H03M13/276H03M13/2782H03M13/6533H04L1/0043H04L1/0052
    • Efficient address generation for interleaver and de-interleaver. The present invention performs interleaving and de-interleaving, at opposite ends of a communication channel, by employing an efficient address generation scheme that is adaptable across a wide variety of applications and platforms. The present invention is particularly applicable to communication channels that exhibit a degree of bursty type noise. By employing interleaving and de-interleaving at the opposite ends of the communication channel, the present invention is able to offer a degree of protection against data corruption that may be caused within the communication channel. The present invention allows convolutional interleaving and de-interleaving operation on a code word by code word basis. The present invention provides for very efficient address generation for RAM based convolutional interleaving and de-interleaving. The present invention also provides for reading, writing, and updating offset registers in a code word by code word base manner.
    • 交织器和解交织器的高效地址生成。 本发明通过采用能够跨越各种应用和平台适用的高效地址生成方案,在通信信道的相对端执行交织和解交织。 本发明特别适用于呈现突发型噪声的通信信道。 通过在通信信道的相对端采用交织和解交织,本发明能够提供一定程度的防止在通信信道内引起的数据损坏。 本发明允许通过代码字对码字进行卷积交织和解交织操作。 本发明提供了用于基于RAM的卷积交织和去交织的非常有效的地址生成。 本发明还提供了通过代码字基本方式读取,写入和更新代码字中的偏移寄存器。
    • 6. 发明申请
    • Trellis constellation shaping
    • 网格星座塑形
    • US20090135937A1
    • 2009-05-28
    • US12321912
    • 2009-01-26
    • Igor S. DjokovicRichard D. Wesel
    • Igor S. DjokovicRichard D. Wesel
    • H04L23/02
    • H04L27/3411H03M13/253H03M13/256H03M13/2936H03M13/41H03M13/6533
    • A method for trellis constellation shaping is disclosed. In one embodiment, this method comprises receiving two or more input bits and filtering at least one of the two or more input bits to create two or more filtered output bits. The step of filtering at least one input bit introduces at least one extra bit. The method then encodes the input bits which are not filtered to create encoded bits and stores the encoded bits and the filtered bits in a buffer. A processing element may be configured to perform Viterbi type processing on the filtered bits to create processed bits. The method combines at least one of the processed bits with at least one of the buffered bits to create a combined bit set from the buffered bits and then performs mapping on the combined bet set to thereby map the combined bit set into a constellation.
    • 公开了一种网格星座成形方法。 在一个实施例中,该方法包括接收两个或更多个输入比特并且对两个或更多个输入比特中的至少一个进行滤波以创建两个或多个滤波输出比特。 对至少一个输入位进行滤波的步骤至少引入一个额外的位。 然后,该方法对未被滤波的输入位进行编码以创建编码比特,并将编码比特和滤波比特存储在缓冲器中。 处理元件可以被配置为对滤波的比特执行维特比类型处理以创建经处理的比特。 该方法将经处理的比特中的至少一个与缓冲比特中的至少一个相结合,以从缓冲的比特中产生组合的比特集合,然后在组合的赌注集上执行映射,从而将组合比特集合映射成星座。