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    • 2. 发明授权
    • Equalize training method using re-encoded bits and known training sequences
    • 使用重新编码的比特和已知的训练序列来均衡训练方法
    • US07903728B2
    • 2011-03-08
    • US12431605
    • 2009-04-28
    • Yue ChenArkady Molev-ShteimanArie HeimanNelson R. SollenbergerHuaiyu (Hanks) ZengBaoguo Yang
    • Yue ChenArkady Molev-ShteimanArie HeimanNelson R. SollenbergerHuaiyu (Hanks) ZengBaoguo Yang
    • H03H7/30H04B1/10
    • H04L25/03171H04L25/03133
    • Equalizer training method using re-encoded bits and known training sequences. A multi-branch equalizer processing module is operable to cancel interference associated with received radio frequency (RF) burst(s) (e.g., using at least a first equalizer processing branch and a second equalizer processing branch). The first equalizer processing branch is operable to be trained based upon known training sequences and to equalize the received RF burst. The second equalizer processing branch uses at least partially re-encoded data bits to train linear equalizer(s) within the second equalizer processing branch. A buffer may initially store the received RF burst(s), which are retrieved and equalized by the second equalizer processing branch once the linear equalizer(s) are trained. The cooperation operation of these and other various components allows interfering signals to be cancelled and for more accurate processing of the received RF bursts to occur.
    • 均衡器训练方法使用重新编码的位和已知的训练序列。 多分支均衡器处理模块可操作以消除与接收的射频(RF)突发相关联的干扰(例如,使用至少第一均衡器处理分支和第二均衡器处理分支)。 第一均衡器处理分支可操作以基于已知的训练序列进行训练,并均衡所接收的RF突发。 第二均衡器处理分支使用至少部分重新编码的数据位来训练第二均衡器处理分支内的线性均衡器。 缓冲器可以初始地存储所接收的RF突发,一旦训练了线性均衡器,其将被第二均衡器处理分支检索和均衡。 这些和其他各种组件的协作操作允许消除干扰信号并且为了更准确地处理接收的RF突发而发生。
    • 4. 发明授权
    • Method and system for processing multi-rate audio from a plurality of audio processing sources
    • 用于处理来自多个音频处理源的多速率音频的方法和系统
    • US07463170B2
    • 2008-12-09
    • US11565414
    • 2006-11-30
    • Hongwei KongHuaiyi (Hanks) ZengNelson SollenbergerLi Fung ChangTaiya ChengClaude Hayek
    • Hongwei KongHuaiyi (Hanks) ZengNelson SollenbergerLi Fung ChangTaiya ChengClaude Hayek
    • H03M7/00
    • H04S1/007G10L19/18H04S2400/13
    • An audio codec in a wireless device may be utilized for up sampling two or more audio signals to a same data sampling rate. Each audio signal, such as digital audio, voice, and polyringer, for example, may be received at one of a plurality of data sampling rates. Audio signals may be equalized and/or compensated with an FIR filter before up sampling or with an IIR filter to reduce overall processing latency. Multiple half-band interpolation operations may perform the up sampling. The first half-band filter may be replaced by an IIR filter to reduce overall processing latency. A gain of the up-sampled data may be adjusted to reduce noise effects. The channels of the up-sampled audio signals may be mixed and later further up sampled for subsequent communication to an output device. The up-sampled mixed audio signals may be down sampled for communication to a Bluetooth radio.
    • 无线设备中的音频编解码器可用于将两个或多个音频信号上采样到相同的数据采样率。 例如,可以以多个数据采样率中的一个接收每个音频信号,例如数字音频,语音和多声道。 音频信号可以在上采样之前用FIR滤波器或IIR滤波器进行均衡和/或补偿,以减少整体处理等待时间。 多个半带插值操作可以执行上采样。 第一个半带滤波器可以被IIR滤波器代替,以减少整体处理等待时间。 可以调整上采样数据的增益以减少噪声影响。 上采样音频信号的信道可以混合并且稍后进一步上采样以便随后与输出设备进行通信。 上采样混合音频信号可能被下采样以便与蓝牙无线电通信。
    • 5. 发明授权
    • Single antenna interference cancellation within a wireless terminal
    • 无线终端内的单天线干扰消除
    • US07450635B2
    • 2008-11-11
    • US11150925
    • 2005-06-13
    • Huaiyu (Hanks) ZengBaoguo YangArkady Molev-ShteimanArie HeimanYue ChenNelson R. Sollenberger
    • Huaiyu (Hanks) ZengBaoguo YangArkady Molev-ShteimanArie HeimanYue ChenNelson R. Sollenberger
    • H03H7/30H03K5/156H04B1/10
    • H04L25/03171H04L25/03133
    • The present invention provides a multi-branch equalizer processing module operable to cancel interference associated with received radio frequency (RF) burst(s). This multi-branch equalizer processing module includes both a first equalizer processing branch and a second equalizer processing branch. The first equalizer processing branch is operable to be trained based upon known training sequences and equalize the received RF burst. This results in soft samples or decisions which in turn may be converted to data bits. The soft samples are processed with a de-interleaver and channel decoder, where the combination is operable to produce a decoded frame of data bits from the soft samples. A re-encoder may re-encode the decoded frame to produce re-encoded or at least partially re-encoded data bits. An interleaver then processes the at least partially re-encoded data bits to produce and at least partially re-encoded burst. The second equalizer processing branch uses the at least partially re-encoded data bits to train linear equalizer(s) within the second equalizer processing branch. A buffer may initially store the received RF burst(s), which are retrieved and equalized by the second equalizer processing branch once the linear equalizer(s) are trained. This results in alternate soft samples or decisions which in turn may be converted to alternate data bits. The alternate soft samples are processed with the de-interleaver and channel decoder, where the combination is operable to produce an alternate decoded frame of data bits from the alternate soft samples. This allows interfering signals to be cancelled and more accurate processing of the received RF bursts to occur.
    • 本发明提供一种多分支均衡器处理模块,其可操作以消除与接收的射频(RF)突发相关联的干扰。 该多分支均衡器处理模块包括第一均衡器处理分支和第二均衡器处理分支。 第一均衡器处理分支可操作以基于已知的训练序列进行训练,并均衡所接收的RF突发。 这导致软样本或决策,而这些样本或决定又可以转换为数据位。 软采样用解交织器和信道解码器处理,其中组合可操作以从软样本产生解码的数据比特帧。 重新编码器可以对解码的帧进行重新编码,以产生重新编码或至少部分重新编码的数据比特。 交织器然后处理至少部分重新编码的数据比特以产生和至少部分地重新编码突发。 第二均衡器处理分支使用至少部分重新编码的数据比特来训练第二均衡器处理分支内的线性均衡器。 缓冲器可以初始地存储所接收的RF突发,一旦训练了线性均衡器,其将被第二均衡器处理分支检索和均衡。 这导致交替的软样本或决定,这又可以转换为备用数据位。 用去交织器和信道解码器处理替代软样本,其中组合可操作以从备选软样本产生替代解码的数据比特帧。 这允许消除干扰信号并且发生接收的RF突发的更精确的处理。
    • 8. 发明申请
    • Adaptive interference cancellation algorithm using speech mode dependent thresholds
    • 使用语音模式相关阈值的自适应干扰消除算法
    • US20060198362A1
    • 2006-09-07
    • US11150957
    • 2005-06-13
    • Arkady Molev-ShteimanNelson SollenbergerHuaiyu (Hanks) Zeng
    • Arkady Molev-ShteimanNelson SollenbergerHuaiyu (Hanks) Zeng
    • H04Q7/00H04Q7/24H04L12/66H04B1/713H04B1/707H04J3/16H04B1/69H04J3/22
    • H04L25/03038H04L25/0224H04L25/0305H04L25/03178H04L2025/03401
    • The present invention provides a method of processing radio frequency (RF) bursts dependent on a speech mode associated with data contained within the RF burst. Different voice modes, full rate, half rate, and adaptive multi-channel rates each may require different signal to noise ratio (SNR) conditions in order to be successfully processed. To improve the equalization of the received RF burst(s), the SNR associated with the burst is estimated. Then based on the SNR or other related conditions (i.e. the presence or absence of colored noise, and the estimated channel profile) a decision can be made as to whether or not an interference cancellation burst process should be implemented. For example, the presence of colored noise may indicate the presence of interference requiring the cancellation of such interference, the channel profile as described by the channel length and other associated properties may help determine when an interference cancellation process should be utilized as well, and if there is insufficient SNR, i.e. the SNR is below the predetermined threshold, all indicate that it may be desirable to implement interference cancellation to improve the processing of the received burst(s).
    • 本发明提供了一种处理与RF数据中包含的数据相关联的语音模式的射频(RF)突发的方法。 不同的语音模式,全速率,半速率和自适应多信道速率各自可能需要不同的信噪比(SNR)条件才能被成功处理。 为了改善所接收的RF突发的均衡,估计与突发相关联的SNR。 然后基于SNR或其他相关条件(即有色噪声的存在或不存在以及估计的信道简档),可以做出关于是否应该实现干扰消除突发处理的决定。 例如,有色噪声的存在可以指示需要消除这种干扰的干扰的存在,由信道长度和其他相关属性描述的信道简档可以帮助确定什么时候还应该使用干扰消除过程,并且如果 SNR不足,即SNR低于预定阈值,都表示可能希望实现干扰消除以改善接收到的突发的处理。
    • 9. 发明授权
    • Method and system for a dual echo canceller
    • 双回波消除器的方法和系统
    • US08687797B2
    • 2014-04-01
    • US12474065
    • 2009-05-28
    • Hanks ZengPrakash KhanduriKen KasiskeRonish PatelNelson Sollenberger
    • Hanks ZengPrakash KhanduriKen KasiskeRonish PatelNelson Sollenberger
    • H04M9/08
    • H04M9/082
    • Methods and systems for a dual echo canceller (EC) are disclosed and may include cancelling echo in utilizing a dual echo canceller, wherein said dual echo canceller includes an active echo canceller and an adaptive echo canceller. Filter coefficients may be copied from the adaptive echo canceller to the active echo canceller for the cancellation, based on whether said adaptive echo canceller has converged. The coefficients may be copied utilizing copy logic, which may comprise divergence detection and/or echo path change detection. The coefficients may be reset to default settings utilizing the copy logic. The coefficients may be calculated utilizing normalized block least mean squares (NBLMS), and may be calculated when the NBLMS is enabled by update logic. The coefficients may be calculated utilizing linear predictive coefficient (LPC) filtered uplink and downlink signals.
    • 公开了用于双回波消除器(EC)的方法和系统,并且可以包括利用双回波消除器来消除回波,其中所述双回波消除器包括主动回波消除器和自适应回波消除器。 基于所述自适应回波消除器是否收敛,可以将滤波器系数从自适应回波消除器复制到用于消除的有源回波消除器。 可以利用可能包括发散检测和/或回波路径变化检测的复制逻辑来复制系数。 使用复制逻辑可以将系数重置为默认设置。 可以使用归一化块最小均方(NBLMS)来计算系数,并且可以在更新逻辑启用NBLMS时计算系数。 可以使用线性预测系数(LPC)滤波的上行链路和下行链路信号来计算系数。