Apparatus and methods for interleaving in a forward link only system
    1.
    发明授权
    Apparatus and methods for interleaving in a forward link only system 失效
    仅在前向链路系统中交织的装置和方法

    公开(公告)号:US08612820B2

    公开(公告)日:2013-12-17

    申请号:US12756917

    申请日:2010-04-08

    IPC分类号: G06F11/00

    摘要: Methods and devices for encoding and interleaving data packets for broadcast and for de-interleaving and decoding data packets in a communication system eliminate detrimental biasing effects by using pseudo-random M-sequence bit encoding as part of the turbo encoding and decoding. The use of pseudo-random M-sequence bit encoding mitigates biasing effects that may otherwise be introduced if conventional r-c interleaving is applied to long turbo encoded data which would degrade reception in the presence of broadcast interference.

    摘要翻译: 用于编码和交织用于广播的数据分组和用于在通信系统中解交织和解码数据分组的数据分组的方法和装置通过使用伪随机M序列比特编码作为turbo编码和解码的一部分来消除有害的偏置效应。 伪随机M序列比特编码的使用减轻了偏移效应,如果传统的r-c交织被应用于在存在广播干扰的情况下会降低接收的长turbo编码数据的情况下可能引入偏置效应。

    System and method of calculating noise variance
    3.
    发明授权
    System and method of calculating noise variance 失效
    噪声方差计算系统和方法

    公开(公告)号:US07693231B2

    公开(公告)日:2010-04-06

    申请号:US11453439

    申请日:2006-06-14

    IPC分类号: H04L27/00

    摘要: The claimed subject matter relates to estimating noise variance associated with a transmitter. For example, the noise variance can be estimated in connection with determining performance parameters associated with a transmitter. Determining noise variance can include the acts of estimating phase alteration of a received signal through utilization of a least squares-based phase estimation algorithm. Determining noise variance can also include the act of determining an unbiased estimation of noise variance as a function of the estimated phase alteration.

    摘要翻译: 所要求保护的主题涉及估计与发射机相关的噪声方差。 例如,可以结合确定与发射机相关联的性能参数来估计噪声方差。 确定噪声方差可以包括通过利用基于最小平方的相位估计算法来估计接收信号的相位变化的动作。 确定噪声方差还可以包括确定噪声方差的无偏估计作为估计相位变化的函数的行为。

    IFFT PROCESSING IN WIRELESS COMMUNICATIONS
    4.
    发明申请
    IFFT PROCESSING IN WIRELESS COMMUNICATIONS 有权
    无线通信中的IFFT处理

    公开(公告)号:US20080040413A1

    公开(公告)日:2008-02-14

    申请号:US11612456

    申请日:2006-12-18

    IPC分类号: G06F15/00

    CPC分类号: H04L27/2626

    摘要: Techniques for performing IFFT pipelining are described. In some aspects, the pipelining is achieved with a processing system having a memory having first and second sections, an encoder configured to process data in each of the first and second memory sections, an IFFT configured to process the encoded data in the first and second memory sections, and a post-processor configured to process the IFFT processed data in the first memory section while the IFFT is processing the encoded data in the second memory section, the post processor configured to operate at a different clock speed than the encoder or the IFFT.

    摘要翻译: 描述了用于执行IFFT流水线的技术。 在一些方面,流水线通过具有具有第一和第二部分的存储器的处理系统来实现,编码器被配置为处理第一和第二存储器部分中的每一个中的数据;被配置为处理第一和第二部分中的编码数据的IFFT 存储器部分和后处理器,其被配置为在IFFT处理第二存储器部分中的编码数据时处理第一存储器部分中的IFFT处理的数据,后处理器被配置为以与编码器不同的时钟速度操作 IFFT。

    Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal
    6.
    发明授权
    Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal 有权
    降低OFDM发射信号的峰均比的方法和装置

    公开(公告)号:US07991040B2

    公开(公告)日:2011-08-02

    申请号:US11519256

    申请日:2006-09-11

    IPC分类号: H04B1/00

    CPC分类号: H04L27/2614 H04L27/2615

    摘要: Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal. In an aspect, a method is provided for reducing a peak to average ratio of a transmit waveform. The method includes obtaining a primary scrambler sequence, generating a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining the primary and secondary scrambler sequences to produce a PAR reduction sequence. In another aspect, an apparatus is provided for reducing a peak to average ratio of a transmit waveform. The apparatus includes a secondary generator configured to generate a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining logic configured to combine a primary scrambler sequence and the secondary scrambler sequences to produce a PAR reduction sequence.

    摘要翻译: 降低OFDM发射信号的峰均比的方法和装置。 在一方面,提供了一种降低发射波形的峰均比的方法。 该方法包括:获得主加扰器序列,产生具有基于要加扰的数据的长度特性的次扰频序列,以及组合所述主加扰序列和次加扰序列以产生PAR减少序列。 在另一方面,提供一种用于减小发射波形的峰均比的装置。 该装置包括辅助发生器,其被配置为产生具有基于要加扰的数据的长度特性的二次扰频器序列,以及被配置为组合主加扰器序列和次加扰器序列以产生PAR减少序列的组合逻辑。

    IFFT PROCESSING IN WIRELESS COMMUNICATIONS
    7.
    发明申请
    IFFT PROCESSING IN WIRELESS COMMUNICATIONS 有权
    无线通信中的IFFT处理

    公开(公告)号:US20080040412A1

    公开(公告)日:2008-02-14

    申请号:US11612455

    申请日:2006-12-18

    IPC分类号: G06F17/14

    CPC分类号: H04L27/2626

    摘要: Techniques for perforating IFFT pipelining are described. In some aspects, the pipelining is achieved with a processing system having a memory with a first, second and third sections, an encoder configured to process data in each of the first, second and third memory sections in a round robin fashion, an IFFT configured to process the encoded data in each of the first, second, and third sections in a round robin fashion, and a post-processor configured to process the IFFT processed data in each of the first, second and third memory sections in a round robin fashion.

    摘要翻译: 描述了用于穿孔IFFT流水线的技术。 在一些方面,流水线通过具有具有第一,第二和第三部分的存储器的处理系统来实现,编码器被配置为以循环方式处理第一,第二和第三存储器部分中的每一个中的数据,IFFT被配置 以循环方式处理第一,第二和第三部分中的每一个中的编码数据,以及后处理器,其被配置为以循环方式处理第一,第二和第三存储器部分中的每一个中的经IFFT处理的数据 。

    Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal
    9.
    发明申请
    Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal 有权
    降低OFDM发射信号的峰均比的方法和装置

    公开(公告)号:US20070230596A1

    公开(公告)日:2007-10-04

    申请号:US11519256

    申请日:2006-09-11

    IPC分类号: H04K1/10

    CPC分类号: H04L27/2614 H04L27/2615

    摘要: Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal. In an aspect, a method is provided for reducing a peak to average ratio of a transmit waveform. The method includes obtaining a primary scrambler sequence, generating a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining the primary and secondary scrambler sequences to produce a PAR reduction sequence. In another aspect, an apparatus is provided for reducing a peak to average ratio of a transmit waveform. The apparatus includes a secondary generator configured to generate a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining logic configured to combine a primary scrambler sequence and the secondary scrambler sequences to produce a PAR reduction sequence.

    摘要翻译: 降低OFDM发射信号的峰均比的方法和装置。 在一方面,提供了一种降低发射波形的峰均比的方法。 该方法包括:获得主加扰器序列,产生具有基于要加扰的数据的长度特性的次扰频序列,以及组合所述主加扰序列和次加扰序列以产生PAR减少序列。 在另一方面,提供一种用于减小发射波形的峰均比的装置。 该装置包括辅助发生器,其被配置为产生具有基于要加扰的数据的长度特性的二次扰频器序列,以及被配置为组合主加扰器序列和次加扰器序列以产生PAR减少序列的组合逻辑。

    METHODS AND APPARATUS FOR REDUCTION OF A PEAK TO AVERAGE RATIO FOR AN OFDM TRANSMIT SIGNAL
    10.
    发明申请
    METHODS AND APPARATUS FOR REDUCTION OF A PEAK TO AVERAGE RATIO FOR AN OFDM TRANSMIT SIGNAL 审中-公开
    用于减少OFDM传输信号的平均比的峰值的方法和装置

    公开(公告)号:US20110255622A1

    公开(公告)日:2011-10-20

    申请号:US13168849

    申请日:2011-06-24

    IPC分类号: H04J11/00

    CPC分类号: H04L27/2614 H04L27/2615

    摘要: Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal. In an aspect, a method is provided for reducing a peak to average ratio of a transmit waveform. The method includes obtaining a primary scrambler sequence, generating a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining the primary and secondary scrambler sequences to produce a PAR reduction sequence. In another aspect, an apparatus is provided for reducing a peak to average ratio of a transmit waveform. The apparatus includes a secondary generator configured to generate a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining logic configured to combine a primary scrambler sequence and the secondary scrambler sequences to produce a PAR reduction sequence.

    摘要翻译: 降低OFDM发射信号的峰均比的方法和装置。 在一方面,提供了一种降低发射波形的峰均比的方法。 该方法包括:获得主加扰器序列,产生具有基于要加扰的数据的长度特性的次扰频序列,以及组合所述主加扰序列和次加扰序列以产生PAR减少序列。 在另一方面,提供一种用于减小发射波形的峰均比的装置。 该装置包括辅助发生器,其被配置为产生具有基于要加扰的数据的长度特性的二次扰频器序列,以及被配置为组合主加扰器序列和次加扰器序列以产生PAR减少序列的组合逻辑。