Systems and methods for LDPC coded modulation
    11.
    发明申请
    Systems and methods for LDPC coded modulation 审中-公开
    用于LDPC编码调制的系统和方法

    公开(公告)号:US20100299574A1

    公开(公告)日:2010-11-25

    申请号:US12783839

    申请日:2010-05-20

    IPC分类号: H03M13/05 G06F11/10

    摘要: Typical forward error correction methods employ Trellis Code Modulation. By substituting low density parity check coding in place of the convolution code as part of a combined modulation and encoding procedure, low density parity check coding and modulation can be performed. The low density parity check codes have no error floor, no cycles, an equal bit error rate for the information bits and the parity bits, and timely construction of both a parity check matrix with variable codeword size and a generator matrix is possible.

    摘要翻译: 典型的前向纠错方法采用格码编码调制。 通过将低密度奇偶校验编码替代为卷积码作为组合调制和编码过程的一部分,可以执行低密度奇偶校验编码和调制。 低密度奇偶校验码对信息比特和奇偶校验位没有错误帧,没有周期,相等误码率,并且可以及时构建具有可变码字大小的奇偶校验矩阵和生成矩阵。

    Beaulieu series approach to optimal UMTS RACH preamble detection estimation
    13.
    发明申请
    Beaulieu series approach to optimal UMTS RACH preamble detection estimation 有权
    Beaulieu系列方法来优化UMTS RACH前导码检测估计

    公开(公告)号:US20050254604A1

    公开(公告)日:2005-11-17

    申请号:US11109208

    申请日:2005-04-18

    IPC分类号: H04B1/707 H04L27/06

    CPC分类号: H04B1/70755

    摘要: A method for preamble detection in mobile unit to base unit wireless telephony sets a preamble detection threshold based upon a Beaulieu series computation dependent upon preamble correlation data. This preamble detection threshold adjusts for noise by assuming the noise is additive White Gaussian noise (AWGN) with a known variance. The method determines the threshold for achieving a probability of false detection of the preamble from noise input of less than 0.001.

    摘要翻译: 基于单元无线电话的移动单元中的前导码检测的方法基于取决于前导相关数据的Beaulieu系列计算来设置前导码检测阈值。 假设噪声是具有已知方差的加性白高斯噪声(AWGN),该前导码检测阈值调整噪声。 该方法确定用于实现噪声输入的前导码的错误检测概率小于0.001的阈值。

    SYSTEMS AND METHODS FOR IMPLEMENTING RECEIVER TRANSPARENT Q-MODE
    14.
    发明申请
    SYSTEMS AND METHODS FOR IMPLEMENTING RECEIVER TRANSPARENT Q-MODE 审中-公开
    用于实现接收器透明Q模的系统和方法

    公开(公告)号:US20100296604A1

    公开(公告)日:2010-11-25

    申请号:US12783755

    申请日:2010-05-20

    IPC分类号: H04L27/00

    摘要: In a receiver transparent Q-mode, i.e., a Q-mode that is only implemented by a transmitter, the receiver is unaware of the Q-mode state of the transmitter. In this type of Q-mode configuration, the transmitter could enter and exit Q-mode as desired while the receiver, could, for example, continue to function as if operating normally, such as in “showtime.” Through this approach, it is not necessary for the receiver to detect the transmitter's entry and exit of Q-mode.

    摘要翻译: 在接收机透明Q模式中,即只由发射机实现的Q模式,接收机不知道发射机的Q模式状态。 在这种类型的Q模式配置中,发射机可以根据需要进入和退出Q模式,而接收机例如可以继续像正常运行那样工作,例如在“播放时间”中。通过这种方法, 接收机不需要检测发射机的Q模式的进入和退出。

    SYSTEMS AND METHODS FOR IMPLEMENTING RECEIVER TRANSPARENT Q-MODE
    15.
    发明申请
    SYSTEMS AND METHODS FOR IMPLEMENTING RECEIVER TRANSPARENT Q-MODE 有权
    用于实现接收器透明Q模的系统和方法

    公开(公告)号:US20070147540A1

    公开(公告)日:2007-06-28

    申请号:US11674871

    申请日:2007-02-14

    IPC分类号: H04L27/00 H04L5/12

    摘要: In a receiver transparent Q-mode, i.e., a Q-mode that is only implemented by a transmitter, the receiver is unaware of the Q-mode state of the transmitter. In this type of Q-mode configuration, the transmitter could enter and exit Q-mode as desired while the receiver, could, for example, continue to function as if operating normally, such as in “showtime.” Through this approach, it is not necessary for the receiver to detect the transmitter's entry and exit of Q-mode.

    摘要翻译: 在接收机透明Q模式中,即只由发射机实现的Q模式,接收机不知道发射机的Q模式状态。 在这种类型的Q模式配置中,发射机可以根据需要进入和退出Q模式,而接收机例如可以继续像正常运行一样工作,例如在“播放时间”。 通过这种方法,接收机不需要检测发射机的Q模式的进入和退出。

    Systems and methods for LDPC coded modulation
    16.
    发明申请
    Systems and methods for LDPC coded modulation 审中-公开
    用于LDPC编码调制的系统和方法

    公开(公告)号:US20050229088A1

    公开(公告)日:2005-10-13

    申请号:US11140246

    申请日:2005-05-31

    摘要: Typical forward error correction methods employ Trellis Code Modulation. By substituting low density parity check coding in place of the convolution code as part of a combined modulation and encoding procedure, low density parity check coding and modulation can be performed. The low density parity check codes have no error floor, no cycles, an equal bit error rate for the information bits and the parity bits, and timely construction of both a parity check matrix with variable codeword size and a generator matrix is possible.

    摘要翻译: 典型的前向纠错方法采用格码编码调制。 通过将低密度奇偶校验编码替代为卷积码作为组合调制和编码过程的一部分,可以执行低密度奇偶校验编码和调制。 低密度奇偶校验码对信息比特和奇偶校验位没有错误帧,没有周期,相等误码率,并且可以及时构建具有可变码字大小的奇偶校验矩阵和生成矩阵。

    Method and apparatus for read-after-write verification with error tolerance
    19.
    发明授权
    Method and apparatus for read-after-write verification with error tolerance 有权
    用于容错读写验证的方法和装置

    公开(公告)号:US06512644B1

    公开(公告)日:2003-01-28

    申请号:US09576735

    申请日:2000-05-23

    IPC分类号: G11B2736

    CPC分类号: G11B20/1879

    摘要: A method and apparatus for Read-After-Write (RAW) verification with error tolerance is disclosed whereby upon read back of data from a medium, the actual read data can be compared to the actual write data, and the number of miscompares between the two can be counted. The severity of the number of miscompares can be determined depending on the Error Control Code (ECC) system used. If the error is correctable by the ECC system, the block need not be re-written to the medium. The invention provides the ability to increase medium capacity and throughput over previous implementations.

    摘要翻译: 公开了一种具有误差容差的用于后读写(RAW)验证的方法和装置,其中当从介质读回数据时,实际的读数据可以与实际的写数据进行比较, 可以算 错误比较数量的严重性可以根据所使用的错误控制代码(ECC)系统来确定。 如果ECC系统可以纠正错误,则该块不需要重新写入介质。 本发明提供了相对于先前实现来增加媒体容量和吞吐量的能力。