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    • 1. 发明申请
    • APPARATUS AND METHODS FOR SAMPLING RATE CONVERSION FOR WIRELESS TRANSCEIVERS
    • 用于采样无线收发器的速率转换的装置和方法
    • WO2011106651A3
    • 2011-11-24
    • PCT/US2011026254
    • 2011-02-25
    • QUALCOMM INCJI ZHUBANISTER BRIAN CLARKEKANG INYUP
    • JI ZHUBANISTER BRIAN CLARKEKANG INYUP
    • H03H17/02H03H17/06
    • H03H17/0294H03H17/0642
    • Disclosed are methods and apparatus for sampling rate conversion in a wireless transceiver. The methods and apparatus achieve agile setting of sampling rates or resampling by adaptively setting a sampling rate of a signal based on at least one performance requirement of the transceiver. In particular, the methods and apparatus perform sampling of an input signal at a first sampling rate to gain one or more input signal samples. The input signal samples are then filtered using parallel or polyphase filtering operating at a second sampling rate lower than the first sampling rate. The filtered samples are then interpolated at the second sampling rate to achieve resampling of the input signal. Polyphase filtering affords an effectively high input sampling rate for good spectrum image rejection, while allowing the second sampling rate to be effectively much lower than the first rate, thereby reducing the complexity of multiplier operations for interpolation.
    • 公开了用于无线收发器中的采样率转换的方法和设备。 该方法和装置通过基于收发器的至少一个性能需求自适应地设置信号的采样率来实现采样速率的灵活设置或重采样。 特别地,该方法和设备以第一采样率对输入信号进行采样以获得一个或多个输入信号采样。 然后使用以低于第一采样率的第二采样率进行操作的并行或多相滤波对输入信号采样进行滤波。 然后以第二采样速率对经滤波的样本进行插值以实现输入信号的重采样。 多相滤波提供了一个有效的高输入采样率以获得良好的频谱图像抑制,同时允许第二采样率实际上远低于第一采样率,从而降低了用于插值的乘法器操作的复杂度。
    • 2. 发明申请
    • REDUCED CELL ACQUISITION TIME
    • 减少细胞获取时间
    • WO2006122101A2
    • 2006-11-16
    • PCT/US2006017879
    • 2006-05-08
    • QUALCOMM INCKANG INYUP
    • KANG INYUP
    • H04B7/216
    • H04B1/7083H04B1/70735
    • A method and apparatus for reduced acquisition time are disclosed. In one embodiment, such as in a W-CDMA system, a receiver receives one or more signals from remote stations, each signal comprising a scrambling code associated with one of a plurality of code groups, each code group identified by a unique series of a synchronization codes. A searcher identifies a subset of first synchronization codes, and a processor selects one or more hypotheses in response to the received subset. The searcher may then perform searching for a scrambling code in accordance with the one or more hypotheses. The scrambling code search may be performed in parallel with continued synchronization code searching. Various other embodiments are also disclosed.
    • 公开了一种缩短采集时间的方法和装置。 在一个实施例中,例如在W-CDMA系统中,接收机从远程站接收一个或多个信号,每个信号包括与多个代码组中的一个相关联的扰码,每个代码组由唯一的一系列 同步码 搜索者识别第一同步码的子集,并且处理器响应于所接收的子集选择一个或多个假设。 然后,搜索者可以根据一个或多个假设执行搜索扰码。 可以与继续的同步码搜索并行地执行扰码搜索。 还公开了各种其它实施例。
    • 4. 发明申请
    • IMPROVED FREQUENCY CHANGER CIRCUITS
    • 改进的频率更换电路
    • WO2008064262A3
    • 2008-12-18
    • PCT/US2007085296
    • 2007-11-20
    • QUALCOMM INCFILIPOVIC DANIEL FKANG INYUP
    • FILIPOVIC DANIEL FKANG INYUP
    • H04B15/00H04B1/10
    • H04B15/00H04B1/109
    • In accordance with one aspect of the disclosure, apparatus are provided. A filter is provided to receive from an antenna a receive signal of a given type and a low noise amplifier is provided to amplify the received signal. A translator down translates the receive signal carried at a radio frequency to be carried at an intermediate frequency. An I/Q channel separator is provided to separate the receive signal carried at the intermediate frequency into an analog in-phase (I) signal in an I channel and an analog quadrature-phase (Q) in a Q channel. An analog-to-digital (A/D) converter is provided to respectively convert the I signal and the Q signal to digital domain representations of the I signal and the Q signal. An intermodulation (IM) distortion avoider is provided to avoid IM distortion in the receive signal. The IM distortion avoider includes a carrier frequency exchanger to exchange an IM carrier frequency of IM distortion contained in the receive signal with a carrier frequency of the receive signal.
    • 根据本公开的一个方面,提供了装置。 提供了一种滤波器,用于从天线接收给定类型的接收信号,并且提供低噪声放大器以放大所接收的信号。 翻译器向下转换以一个中频传送的射频携带的接收信号。 提供I / Q通道分离器以将在中频载送的接收信号分离为I通道中的模拟同相(I)信号和Q通道中的模拟正交相(Q)。 提供模数(A / D)转换器以分别将I信号和Q信号转换为I信号和Q信号的数字域表示。 提供互调(IM)失真提供者以避免接收信号中的IM失真。 IM失真解除器包括载波频率交换机,用于将接收信号中包含的IM失真的IM载波频率与接收信号的载波频率进行交换。
    • 8. 发明专利
    • Space-efficient turbo decoder
    • 空间高效的涡轮解码器
    • JP2008022569A
    • 2008-01-31
    • JP2007212248
    • 2007-08-16
    • Qualcomm Incクゥアルコム・インコーポレイテッドQualcomm Incorporated
    • KANG INYUP
    • H03M13/13H03M13/29H03M13/27H03M13/45H04L1/00H04L13/08
    • H03M13/3905H03M13/2975H03M13/2984H03M13/6502H03M13/6505H03M13/6563
    • PROBLEM TO BE SOLVED: To solve the problem that an efficient dealing method for eliminating the necessity to attach a memory bank is required.
      SOLUTION: The disclosed turbo decoder includes a first mode of operation in which the turbo decoder uses a first functional loop. The first functional loop includes a memory bank, a read interleaver, a first multiplexer (MUX), a RAM file, a log-MAP decoder, a write interleaver, and a second MUX. The disclosed turbo decoder further includes a second mode of operation in which a second functional loop is used. The second functional loop includes the memory bank, the first MUX, the RAM file, the log-MAP decoder, and the second MUX. The memory bank is a dual port extrinsic memory. The disclosed turbo decoder circuit switches between the first mode and the second mode.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了解决用于消除附加存储体的必要性的有效的处理方法的问题。 解决方案:所公开的turbo解码器包括turbo解码器使用第一功能环路的第一操作模式。 第一功能循环包括存储体,读交织器,第一多路复用器(MUX),RAM文件,对数MAP解码器,写交织器和第二MUX。 所公开的turbo解码器还包括使用第二功能回路的第二操作模式。 第二功能循环包括存储体,第一MUX,RAM文件,log-MAP解码器和第二MUX。 存储器是双端口外部存储器。 所公开的turbo解码器电路在第一模式和第二模式之间切换。 版权所有(C)2008,JPO&INPIT