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    • 3. 发明授权
    • Method and system for interference suppression in WCDMA systems
    • WCDMA系统干扰抑制方法与系统
    • US08284819B2
    • 2012-10-09
    • US12582771
    • 2009-10-21
    • Mark HahmWei LuoArkady Molev-ShteimanHongwei KongXiao-Feng QiLi Fung ChangNelson Sollenberger
    • Mark HahmWei LuoArkady Molev-ShteimanHongwei KongXiao-Feng QiLi Fung ChangNelson Sollenberger
    • H04B1/00
    • H04B1/712H04J11/0063H04J13/0044H04J13/0048
    • Aspects of a method and system for interference suppression in WCDMA systems may include one or more circuits that are operable to receive a plurality of multipath signals via one or more receiving antennas. A plurality of weighting factor values may be computed based on the received multipath signals. Estimated signals may be based on the weighting factor values. Residual signals may be generated based on received signals and the estimated signals. Addback signals may be generated based on the estimated signals and the residual signals. Updated estimated signals may be generated based on the addback signals and the weighting factor values. Incremental signals may be generated based on the updated estimated signals and addback signals. Updated residual signals may be generated based on the incremental signals and previous residual signals. The interference suppressed signals may be generated based on the updated residual signals and updated estimated signals.
    • 用于WCDMA系统中的干扰抑制的方法和系统的方面可以包括可操作以经由一个或多个接收天线接收多个多径信号的一个或多个电路。 可以基于接收的多路径信号来计算多个加权因子值。 估计信号可以基于加权因子值。 可以基于接收的信号和估计的信号来产生残余信号。 可以基于估计的信号和残留信号来生成附加信号。 可以基于附加信号和加权因子值来生成更新的估计信号。 可以基于更新的估计信号和加法信号来产生增量信号。 可以基于增量信号和先前的剩余信号来生成更新的残留信号。 可以基于更新的残差信号和更新的估计信号来产生干扰抑制信号。
    • 4. 发明授权
    • Method and system for interference suppression in WCDMA systems
    • WCDMA系统干扰抑制方法与系统
    • US08503506B2
    • 2013-08-06
    • US13588297
    • 2012-08-17
    • Mark HahmWei LuoArkady Molev-ShteimanHongwei KongXiao-Feng QiLi Fung ChangNelson Sollenberger
    • Mark HahmWei LuoArkady Molev-ShteimanHongwei KongXiao-Feng QiLi Fung ChangNelson Sollenberger
    • H04B1/707
    • H04B1/712H04J11/0063H04J13/0044H04J13/0048
    • Aspects of a method and system for interference suppression in WCDMA systems may include one or more circuits that are operable to receive a plurality of multipath signals via one or more receiving antennas. A plurality of weighting factor values may be computed based on the received multipath signals. Estimated signals may be based on the weighting factor values. Residual signals may be generated based on received signals and the estimated signals. Addback signals may be generated based on the estimated signals and the residual signals. Updated estimated signals may be generated based on the addback signals and the weighting factor values. Incremental signals may be generated based on the updated estimated signals and addback signals. Updated residual signals may be generated based on the incremental signals and previous residual signals. The interference suppressed signals may be generated based on the updated residual signals and updated estimated signals.
    • 用于WCDMA系统中的干扰抑制的方法和系统的方面可以包括可操作以经由一个或多个接收天线接收多个多径信号的一个或多个电路。 可以基于接收的多路径信号来计算多个加权因子值。 估计信号可以基于加权因子值。 可以基于接收的信号和估计的信号来产生残余信号。 可以基于估计的信号和残留信号来生成附加信号。 可以基于附加信号和加权因子值来生成更新的估计信号。 可以基于更新的估计信号和加法信号来产生增量信号。 可以基于增量信号和先前的剩余信号来生成更新的残留信号。 可以基于更新的残差信号和更新的估计信号来产生干扰抑制信号。
    • 7. 发明授权
    • Dynamic frequency hopping
    • 动态跳频
    • US06501785B1
    • 2002-12-31
    • US09472784
    • 1999-12-28
    • Li Fung ChangKapil K. ChawlaJustin C. ChuangZoran KosticNelson SollenbergerXiaoxin Qiu
    • Li Fung ChangKapil K. ChawlaJustin C. ChuangZoran KosticNelson SollenbergerXiaoxin Qiu
    • H04J1306
    • H04W16/10H04B7/2621
    • This invention provides a dynamic frequency hopping system that utilizes information from multiple base stations. The system assigns frequency hopping patterns based on current interference and traffic environments to avoid interference thus gaining the benefits of interference averaging and interference avoidance. The system imposes less stringent measurement requirements on terminals (wireless mobile devices) because many measurement requirements are replaced by generating estimates based on measurement data received from other base stations within a base station neighborhood. The system may continuously verify that the frequency hopping patterns assigned to the links of the system optimizes system performance. The system compares system performance of possible frequency hopping patterns against currently assigned frequency hopping pattern to optimize system performance. When a request for a link is received, a similar process as above is performed where the request is granted/denied/delayed based on system optimization requirements. In this way, the frequency hopping patterns of the links of the system may be assigned so that an optimum system performance may be obtained.
    • 本发明提供了利用来自多个基站的信息的动态跳频系统。 该系统基于当前的干扰和业务环境分配跳频模式,以避免干扰,从而获得干扰平均和干扰避免的好处。 该系统对终端(无线移动设备)施加较不严格的测量要求,因为通过基于从基站附近的其他基站接收的测量数据生成估计来代替许多测量要求。 系统可以连续验证分配给系统的链路的跳频模式优化系统性能。 该系统将可能的跳频模式的系统性能与当前分配的跳频模式进行比较,以优化系统性能。 当接收到链接的请求时,执行与根据系统优化要求授予/拒绝/延迟请求的类似的过程。 以这种方式,可以分配系统的链路的跳频模式,使得可以获得最佳的系统性能。
    • 8. 发明授权
    • Method and system for handling the processing of bluetooth data during multi-path multi-rate audio processing
    • 在多路径多速率音频处理中处理蓝牙数据处理的方法和系统
    • US07912728B2
    • 2011-03-22
    • US11565373
    • 2006-11-30
    • Hongwei KongNelson SollenbergerLi Fung ChangClaude HayekTaiyi Cheng
    • Hongwei KongNelson SollenbergerLi Fung ChangClaude HayekTaiyi Cheng
    • H04J3/22H03M7/00
    • G10L19/00
    • An audio codec in a baseband processor may be utilized for mixing audio signals received at a plurality of data sampling rates. The mixed audio signals may be up sampled to a very large sampling rate, and then down sampled to a specified sampling rate that is compatible with a Bluetooth-enabled device by utilizing an interpolator in the audio codec. The down-sampled signals may be communicated to Bluetooth-enabled devices, such as Bluetooth headsets, or Bluetooth-enabled devices with a USB interface. The interpolator may be a linear interpolator for which the audio codec may enable generation of triggering and/or coefficient signals based on the specified output sampling rate. An interpolation coefficient may be generated based on a base value associated with the specified output sampling rate. The audio codec may enable selecting the specified output sampling rate from a plurality of rates.
    • 基带处理器中的音频编解码器可用于混合以多个数据采样率接收的音频信号。 混合音频信号可以被上采样到非常大的采样率,然后通过利用音频编解码器中的内插器而被下采样到与启用蓝牙的设备兼容的指定采样率。 下采样信号可以传送到具有USB接口的支持蓝牙的设备,例如蓝牙耳机或具有蓝牙功能的设备。 内插器可以是线性内插器,其中音频编解码器可以基于指定的输出采样率来实现触发和/或系数信号的产生。 可以基于与指定的输出采样率相关联的基值产生内插系数。 音频编解码器可以允许从多个速率中选择指定的输出采样率。
    • 9. 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。
    • 10. 发明申请
    • METHOD AND SYSTEM FOR CONTROLLING GAIN DURING MULTIPATH MULTI-RATE AUDIO PROCESSING
    • 用于在多路径多音频处理中控制增益的方法和系统
    • US20080130916A1
    • 2008-06-05
    • US11565358
    • 2006-11-30
    • Hongwei KongNelson SollenbergerLi Fung Chang
    • Hongwei KongNelson SollenbergerLi Fung Chang
    • H03G3/00
    • H03G3/3026H03G3/3089
    • Methods and systems for processing audio signals are disclosed herein. Aspects of the method may comprise controlling gain during multipath, multi-rate audio processing by generating via a digital gain circuit, a digital signal that is a product of an input digital signal and a gain coefficient derived from a lookup table, and bit-shifted to generate a digital output signal. The gain coefficient may be partitioned into a number of gain blocks. The gain values in each of the gain blocks may be twice a corresponding value in each preceding gain block. The gain blocks may be partitioned into steps that represent particular gain values within a range associated with the gain block. The digital output signal may be ramped utilizing a linear interpolation of the gain coefficients one step apart over a number of samples of the digital input signal, where the number of samples is given as a power of two.
    • 本文公开了用于处理音频信号的方法和系统。 该方法的方面可以包括通过经由数字增益电路产生多径,多速率音频处理中的增益,作为输入数字信号的乘积的数字信号和从查找表导出的增益系数,以及位移 以产生数字输出信号。 增益系数可以被划分成多个增益块。 每个增益块中的增益值可以是每个先前增益块中相应值的两倍。 增益块可以被划分为在与增益块相关联的范围内表示特定增益值的步骤。 数字输出信号可以利用在数字输入信号的数量样本间隔一步的增益系数的线性内插来斜坡,其中样本数量被给予为2的幂。