公开(公告)号：US07720165B2

公开(公告)日：2010-05-18

申请号：US11559885

申请日：2006-11-14

申请人： Kai-Li Lee ,  Jung-Tang Chiang

发明人： Kai-Li Lee ,  Jung-Tang Chiang

IPC分类号： H04L5/12

CPC分类号： H03M13/25 ,  H03M13/256

摘要： A demapper, applied to a quadrature amplitude modulation trellis coded modulation (QAM-TCM) decoder, for generating more significant bits of a QAM signal according to the QAM signal and at least a less significant bit of the QAM signal is disclosed. The demapper includes a shifter for shifting the QAM signal to generate a shifted signal; a threshold value comparing and mapping unit for outputting at least a more-significant-bit buffered value; a sign bit decider for determining a sign value corresponding to the shifted signal; a multiplexer for generating a first more-significant-bit estimation and a second more-significant-bit estimation; and an operating unit for determining a third more-significant-bit estimation and a fourth more-significant-bit estimation.

摘要翻译： 公开了一种应用于正交幅度调制网格编码调制（QAM-TCM）解码器的解映射器，用于根据QAM信号和QAM信号的至少较低有效位产生QAM信号的更高有效位。 解映射器包括用于移位QAM信号以产生移位信号的移位器; 阈值比较和映射单元，用于输出至少一个更重要位缓存的值; 用于确定与所述移位信号相对应的符号值的符号位决定器; 多路复用器，用于产生第一更有效位估计和第二更有效位估计; 以及用于确定第三更高有效位估计和第四更高有效位估计的操作单元。

公开(公告)号：US20070110187A1

公开(公告)日：2007-05-17

申请号：US11559885

申请日：2006-11-14

申请人： Kai-Li Lee ,  Jung-Tang Chiang

发明人： Kai-Li Lee ,  Jung-Tang Chiang

IPC分类号： H03D1/24

CPC分类号： H03M13/25 ,  H03M13/256

摘要： A demapper, applied to a quadrature amplitude modulation trellis coded modulation (QAM-TCM) decoder, for generating more significant bits of a QAM signal according to the QAM signal and at least a less significant bit of the QAM signal is disclosed. The demapper includes a shifter for shifting the QAM signal to generate a shifted signal; a threshold value comparing and mapping unit for outputting at least a more-significant-bit buffered value; a sign bit decider for determining a sign value corresponding to the shifted signal; a multiplexer for generating a first more-significant-bit estimation and a second more-significant-bit estimation; and an operating unit for determining a third more-significant-bit estimation and a fourth more-significant-bit estimation.

摘要翻译： 公开了一种应用于正交幅度调制网格编码调制（QAM-TCM）解码器的解映射器，用于根据QAM信号和QAM信号的至少较低有效位产生QAM信号的更高有效位。 解映射器包括用于移位QAM信号以产生移位信号的移位器; 阈值比较和映射单元，用于输出至少一个更重要位缓存的值; 用于确定与所述移位信号相对应的符号值的符号位决定器; 多路复用器，用于产生第一更有效位估计和第二更有效位估计; 以及用于确定第三更高有效位估计和第四更高有效位估计的操作单元。

公开(公告)号：US20080109626A1

公开(公告)日：2008-05-08

申请号：US11933246

申请日：2007-10-31

申请人： Kai-Li Lee ,  Jung-Tang Chiang ,  Meng-Han Hsieh

发明人： Kai-Li Lee ,  Jung-Tang Chiang ,  Meng-Han Hsieh

IPC分类号： G06F13/28

CPC分类号： G06F12/0607

摘要： A deinterleaving device includes a memory space, the memory space being divided into a plurality of N segments with different lengths respectively. A method of accessing data in a deinterleaving device, the method including performing the following steps during a first time cycle: reading first read data from a first address of a first segment; reading second read data from a first address of a second segment, and writing first write data into the first address of the second segment; reading third read data from a first address of a third segment, and writing second write data into the first address of the third segment; repeating the above reading and writing steps until reading Nth read data from a first address of an Nth segment, and writing N−1th write data into the first address of the Nth segment; writing Nth write data into the first address of the first segment.

摘要翻译： 解交织装置包括存储器空间，存储空间分别被分成具有不同长度的多个N个段。 一种在去交错设备中访问数据的方法，所述方法包括在第一时间周期期间执行以下步骤：从第一段的第一地址读取第一读取数据; 从第二段的第一地址读取第二读取数据，并将第一写入数据写入第二段的第一地址; 从第三段的第一地址读取第三读取数据，并将第二写入数据写入第三段的第一地址; 重复上述读取和写入步骤，直到从第N 段的第一地址读取N 读取数据，并写入N-1 将数据写入第N 段的第一地址; 将第N 写入数据写入第一段的第一地址。

公开(公告)号：US07895402B2

公开(公告)日：2011-02-22

申请号：US11933246

申请日：2007-10-31

申请人： Kai-Li Lee ,  Jung-Tang Chiang ,  Meng-Han Hsieh

发明人： Kai-Li Lee ,  Jung-Tang Chiang ,  Meng-Han Hsieh

IPC分类号： G06F13/16

CPC分类号： G06F12/0607

摘要： A deinterleaving device includes a memory space, the memory space being divided into a plurality of N segments with different lengths respectively. A method of accessing data in a deinterleaving device, the method including performing the following steps during a first time cycle: reading first read data from a first address of a first segment; reading second read data from a first address of a second segment, and writing first write data into the first address of the second segment; reading third read data from a first address of a third segment, and writing second write data into the first address of the third segment; repeating the above reading and writing steps until reading Nth read data from a first address of an Nth segment, and writing N−1th write data into the first address of the Nth segment; writing Nth write data into the first address of the first segment.

摘要翻译： 解交织装置包括存储器空间，存储空间分别被分成具有不同长度的多个N个段。 一种在解交织设备中访问数据的方法，所述方法包括在第一时间周期期间执行以下步骤：从第一段的第一地址读取第一读取数据; 从第二段的第一地址读取第二读取数据，并将第一写入数据写入第二段的第一地址; 从第三段的第一地址读取第三读取数据，并将第二写入数据写入第三段的第一地址; 重复上述读取和写入步骤，直到从第N个分段的第一个地址读取第N个读取数据，并将第N个第一个写入数据写入第N个分段的第一个地址; 将第N个写入数据写入第一个段的第一个地址。