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11. 发明授权

US07668188B2 Method and system for HSDPA bit level processor engine 有权
标题翻译： HSDPA位级处理器引擎的方法和系统
公开(公告)号：US07668188B2
公开(公告)日：2010-02-23
申请号：US11353886
申请日：2006-02-14
申请人： Li Fung Chang , Mark Hahm , Simon Baker
发明人： Li Fung Chang , Mark Hahm , Simon Baker
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L1/0071 , H04L1/0066 , H04L1/0067 , H04L1/0075 , H04L1/08 , H04L1/1812 , H04L1/1845 , H04L2001/0093
摘要： Methods and systems for processing signals in a communication system are disclosed and may include pipelining processing of a received HSDPA bitstream within a single chip. The pipelining may include calculating a memory address for a current portion of a plurality of information bits in the received HSDPA bitstream, while simultaneously storing on-chip, a portion of the plurality of information bits in the received bitstream that is subsequent to the current portion. A portion of the plurality of information bits in the received HSDPA bitstream that is previous to the current portion may be decoded during the calculating and the storing. The calculation of the memory address for the current portion of the plurality of information bits may be achieved without the use of a buffer. Processing of the plurality of information bits may be partitioned into a functional data processing path and a functional address processing path.
摘要翻译：公开了用于在通信系统中处理信号的方法和系统，并且可以包括在单个芯片内接收的HSDPA比特流的流水线处理。流水线可以包括计算接收的HSDPA比特流中的多个信息比特的当前部分的存储器地址，同时在片上存储接收到的当前部分之后的接收比特流中的多个信息比特的一部分。可以在计算和存储期间对接收到的HSDPA比特流中当前部分之前的多个信息比特的一部分进行解码。可以在不使用缓冲器的情况下实现多个信息比特的当前部分的存储器地址的计算。多个信息位的处理可以被划分为功能数据处理路径和功能地址处理路径。

12. 发明授权

US07586931B2 Wireless terminal turbo decoding module supporting packet splitting and decoding 有权
标题翻译：无线终端turbo解码模块支持分组分解和解码
公开(公告)号：US07586931B2
公开(公告)日：2009-09-08
申请号：US11779988
申请日：2007-07-19
申请人： Xiaoxin Qiu , Li Fung Chang , Hui Luo , Srirang Ashok Lovlekar
发明人： Xiaoxin Qiu , Li Fung Chang , Hui Luo , Srirang Ashok Lovlekar
IPC分类号： H04B7/212
CPC分类号： H04L1/0051 , H04L1/0054 , H04L1/0066 , H04L1/1819 , H04L1/1845
摘要： A baseband processing module of a wireless terminal includes a Turbo decoding module. The Turbo decoding module decodes a Turbo code word to produce one or more Media Access Control (MAC) packet(s) carried by the turbo decode word. Each MAC packet includes a MAC packet header and the MAC packet payload, which carries one or more Radio Link Control (RLC) Packet Data Units (PDUs). The Turbo decoding module decodes the MAC packet header to determine boundaries of the PDUs carried in the MAC packet payload. The Turbo decoding module decodes RLC PDU headers and RLC PDU payloads of the RLC PDUs. The Turbo decoding module writes the decoded MAC packet header, the decoded RLC PDU headers, and the decoded RLC PDU payloads to memory in a word-aligned format. The Turbo decoding module may also operate in various other Turbo decoding modes.
摘要翻译：无线终端的基带处理模块包括Turbo解码模块。 Turbo解码模块解码Turbo码字以产生由turbo解码字携带的一个或多个媒体访问控制（MAC）分组。每个MAC分组包括携带一个或多个无线电链路控制（RLC）分组数据单元（PDU）的MAC分组报头和MAC分组有效载荷。 Turbo解码模块对MAC分组报头进行解码，以确定MAC分组负载中承载的PDU的边界。 Turbo解码模块解码RLC PDU的RLC PDU头部和RLC PDU有效载荷。 Turbo解码模块将解码的MAC分组报头，解码的RLC PDU报头和解码的RLC PDU有效载荷以字对齐格式写入存储器。 Turbo解码模块也可以以各种其他Turbo解码模式工作。

13. 发明授权

US07584398B2 Edge incremental redundancy memory structure and memory management 有权
标题翻译：边增量冗余内存结构和内存管理
公开(公告)号：US07584398B2
公开(公告)日：2009-09-01
申请号：US11843903
申请日：2007-08-23
申请人： Li Fung Chang , Yongqian Wang
发明人： Li Fung Chang , Yongqian Wang
IPC分类号： G08C25/02
CPC分类号： H04L1/0059 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0065 , H04L1/0068 , H04L1/0069 , H04L1/0071 , H04L1/1816 , H04L1/1819 , H04L1/1829 , H04L1/1835 , H04L1/1845 , H04L1/203 , H04L1/208 , H04L25/03006 , H04L25/03318 , H04L25/067 , H04L27/0008 , H04L2025/03401 , H04L2025/03407 , H04L2025/03726 , H04L2027/0038
摘要： A system for implementing Incremental Redundancy (IR) operations in a wireless receiver includes at least one processing device, an IR processing function, and IR memory. The at least one processing device is operable to receive analog signals corresponding to a data block, to sample the analog signals to produce samples, to equalize the samples to produce soft decision bits corresponding to the data block, and to initiate IR operations. The IR processing function is operable to perform IR operations on the soft decision bits of the data block in an attempt to correctly decode the data block. The IR memory operably couples to the IR processing function, includes Type I IR memory adapted to store IR status information of the data block, and includes Type II IR memory adapted to store the data block.
摘要翻译：用于在无线接收机中实现增量冗余（IR）操作的系统包括至少一个处理设备，IR处理功能和IR存储器。所述至少一个处理装置可操作以接收对应于数据块的模拟信号，以对所述模拟信号进行采样以产生样本，以使样本均衡以产生与所述数据块相对应的软判决位，并发起IR操作。 IR处理功能可操作以对数据块的软判决位执行IR操作，以尝试正确解码数据块。 IR存储器可操作地耦合到IR处理功能，包括适于存储数据块的IR状态信息的I型IR存储器，并且包括适于存储数据块的II型IR存储器。

14. 发明申请

US20090098902A1 METHOD AND SYSTEM FOR PROCESSING MULTI-RATE AUDIO FROM A PLURALITY OF AUDIO PROCESSING SOURCES 有权
标题翻译：从多种音频处理来源处理多速音频的方法和系统
公开(公告)号：US20090098902A1
公开(公告)日：2009-04-16
申请号：US12250233
申请日：2008-10-13
申请人： Hongwei Kong , Huaiyi (Hanks) Zeng , Nelson Sollenberger , Li Fung Chang , Taiyi Cheng , Claude Hayek
发明人： Hongwei Kong , Huaiyi (Hanks) Zeng , Nelson Sollenberger , Li Fung Chang , Taiyi Cheng , Claude Hayek
IPC分类号： H04M1/00 , H04B1/00
CPC分类号： H04S1/007 , G10L19/18 , H04S2400/13
摘要： One or more circuits in a mobile phone 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 and one or more of the following wireless standards: WCDMA, HSDPA, GSM, GPRS, EDGE, and/or Bluetooth. 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.
摘要翻译：移动电话中的一个或多个电路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。可以以多种数据采样率和以下无线标准中的一种或多种以下无线标准中的一种来接收每个音频信号，例如数字音频，话音和多声道，WCDMA，HSDPA，GSM，GPRS，EDGE和 /或蓝牙。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。

15. 发明授权

US07515071B2 Method and system for audio CODEC voice ADC processing 失效
标题翻译：音频CODEC语音ADC处理方法和系统
公开(公告)号：US07515071B2
公开(公告)日：2009-04-07
申请号：US11565591
申请日：2006-11-30
申请人： Hongwei Kong , Li Fung Chang
发明人： Hongwei Kong , Li Fung Chang
IPC分类号： H03M7/00
CPC分类号： H03M3/496
摘要： Methods and systems for audio CODEC voice ADC processing are disclosed. Aspects of one method may include using a decimating filter that may be enabled to generate 13 MHz, 9-level digital output signal from a 26 MHz, 3-level digital input signal. The 13 MHz, 9-level digital output signal may be processed for RF transmission, for audio output to an output device, and/or utilized for testing by a test fixture, for example. The 13 MHz, 9-level digital output signal may be further processed to generate a 6.5 MHz, 33-level digital signal. The 6.5 MHz, 33-level digital signal may be converted to an analog signal, and processed for audio output and/or testing. The 13 MHz, 9-level digital output signal may also be processed to generate a 40 KHz, 17-bit digital signal, which may be communicated to a test equipment or further processed for RF transmission.
摘要翻译：公开了用于音频CODEC语音ADC处理的方法和系统。一种方法的方面可以包括使用可被用于从26MHz 3级数字输入信号产生13MHz的9级数字输出信号的抽取滤波器。 13MHz，9电平数字输出信号可以被处理用于RF传输，用于音频输出到输出设备，和/或用于例如测试夹具的测试。可以进一步处理13MHz，9电平数字输出信号，以产生一个6.5MHz，33电平的数字信号。 6.5 MHz，33级数字信号可以转换为模拟信号，并进行音频输出和/或测试。 13MHz的9电平数字输出信号也可以被处理以产生40KHz的17位数字信号，该数字信号可传送到测试设备或进一步处理用于RF传输。

16. 发明申请

US20090036078A1 Unified STTD/CLTD dedicated pilot processing 有权
标题翻译：统一的STTD / CLTD专用导频处理
公开(公告)号：US20090036078A1
公开(公告)日：2009-02-05
申请号：US11964066
申请日：2007-12-26
申请人： Hongwei Kong , Li Fung Chang , Pan Liu
发明人： Hongwei Kong , Li Fung Chang , Pan Liu
IPC分类号： H04B17/00
CPC分类号： H04B7/0871 , H04L5/0051 , H04L25/0226
摘要： Apparatus and method to provide unified STTD/CLTD dedicated pilot processing in a wireless receiver. The technique allows different set of parameters to be introduced to a same processing module to process STTD and CLTD diversity signals to recover a pilot signal. Introducing another set of parameters to the processing module also allows processing of a non-diversity signal to recover a pilot. The unified processing of STTD/CLTD signals is achieved by converting STTD/CLTD pilot bits as Hadamard-like bits and processing these bits along with orthogonal pilot bits which are encoded as Hadamard encoded bits.
摘要翻译：在无线接收机中提供统一的STTD / CLTD专用导频处理的装置和方法。该技术允许将不同的参数集合引入相同的处理模块来处理STTD和CLTD分集信号以恢复导频信号。向处理模块引入另一组参数还允许处理非分集信号以恢复导频。将STTD / CLTD信号的统一处理通过将STTD / CLTD导频位转换为Hadamard类比特并且将这些比特以及被编码为Hadamard编码比特的正交导频比特一起处理来实现。

17. 发明申请

US20080132190A1 Method and system for delay matching in a rake receiver 有权
标题翻译：耙式接收机延时匹配的方法和系统
公开(公告)号：US20080132190A1
公开(公告)日：2008-06-05
申请号：US11607438
申请日：2006-12-01
申请人： Hongwei Kong , Nelson Sollenberger , Li Fung Chang , Zoran Kostic , Mark Hahm
发明人： Hongwei Kong , Nelson Sollenberger , Li Fung Chang , Zoran Kostic , Mark Hahm
IPC分类号： H04B1/10
CPC分类号： H04B1/7115 , H04B1/7117 , H04B2201/70701
摘要： Certain aspects of a method and system for delay matching in a rake receiver are disclosed. Aspects of one method may include compensating for a delay associated with at least one or both of the following in a rake receiver: a control channel and a data channel, prior to individual processing of received data by the data channel and individual processing of received data by the control channel. The data channel or the dedicated physical channel (DPCH) may be delayed with respect to the control channel, which may comprise, for example, the common pilot control channel (CPICH), by a particular time period.
摘要翻译：公开了用于耙式接收机中的延迟匹配的方法和系统的某些方面。一种方法的方面可以包括在耙式接收机中补偿与以下中的至少一个或两者相关联的延迟：控制信道和数据信道，在数据信道对接收到的数据进行单独处理之前，以及接收数据的单独处理由控制通道。数据信道或专用物理信道（DPCH）可以相对于可以包括例如公共导频控制信道（CPICH）的控制信道延迟特定时间段。

18. 发明申请

US20080075209A1 Frequency domain equalizer for dual antenna radio 有权
标题翻译：双天线收音机的频域均衡器
公开(公告)号：US20080075209A1
公开(公告)日：2008-03-27
申请号：US11524584
申请日：2006-09-21
申请人： Junqiang Li , Mark David Hahm , Nelson R. Sollenberger , Li Fung Chang
发明人： Junqiang Li , Mark David Hahm , Nelson R. Sollenberger , Li Fung Chang
IPC分类号： H04L1/02 , H04B1/10
CPC分类号： H04L25/03038 , H04L25/0204 , H04L25/0212 , H04L25/022 , H04L2025/03426 , H04L2025/03605
摘要： A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the time domain training symbols to produce a time domain channel estimate, a Fast Fourier Transformer operable to convert the time domain channel estimate to the frequency domain to produce a frequency domain channel estimate, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, an Inverse Fast Fourier Transformer operable to converting the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients.
摘要翻译：射频（RF）接收机包括RF前端和耦合到RF前端的基带处理模块，其可操作以接收包括时域训练符号和时域数据符号的时域信号。基带处理模块包括信道估计器，其可操作以处理时域训练符号以产生时域信道估计;快速傅立叶变换器，其可操作以将时域信道估计转换为频域以产生频域信道估计，权重计算器，其可操作以基于频域信道估计产生频域均衡器系数;反傅里叶变换器，其可操作以将频域均衡器系数转换到时域以产生时域均衡器系数;以及均衡器，其可操作以均衡时域数据符号使用时域均衡器系数。

19. 发明授权

US07106787B2 Acquisition matched filter for W-CDMA systems providing frequency offset robustness 有权
公开(公告)号：US07106787B2
公开(公告)日：2006-09-12
申请号：US09994763
申请日：2001-11-28
申请人： Li Fung Chang , Kapil Chawla , Nelson Sollenberger
发明人： Li Fung Chang , Kapil Chawla , Nelson Sollenberger
IPC分类号： H04B1/707
CPC分类号： H04B1/7077 , H04B1/7093
摘要： A system and method for acquiring a transmitted spread-spectrum signal uses a matched filter configuration that is preferably employed as a Stage 2 filter in the second phase of an initial signal acquisition procedure performed in the receiver. In operation, a Stage 1 filter matches a sequence which is repeated a number of times according to a second sequence within a secondary synchronization sub-channel of the spread-spectrum signal. The Stage 2 filter of the invention then filters the output of the Stage 1 filter in order to recover a secondary synchronization code. The Stage 2 filters the output of the Stage 1 filter using three matched filters of its own. The first and second filters sample different taps of a sequence output from the Stage 1 filter. The third filter samples a predetermined number of taps overlapping taps for the first and second filters in a way that resolves ambiguities with respect to the identification of the sequence. The ambiguity resolution performed by the third filter improves the frequency offset robustness and thus the overall performance of the receiver.

20. 发明授权

US07035649B1 On demand multicast messaging system 失效
公开(公告)号：US07035649B1
公开(公告)日：2006-04-25
申请号：US10753725
申请日：2004-01-08
申请人： Li Fung Chang , Hui Luo , Xiaoxin Qiu
发明人： Li Fung Chang , Hui Luo , Xiaoxin Qiu
IPC分类号： H04Q7/20
CPC分类号： H04W4/02 , G06Q30/0601 , H04L12/18 , H04L29/06 , H04L51/00 , H04L67/04 , H04L67/16 , H04L67/18 , H04L67/20 , H04L67/26 , H04L67/306 , H04W4/18 , H04W4/20
摘要： An on-demand message system includes a profile proxy server and a plurality of message servers coupled to a wireless network for sending messages to mobile users under conditions specified by the users and sellers. Users provide profile information specifying categories and conditions for which they will receive messages. Sellers also provide profile information specifying conditions under which they want messages to be sent. A multicast message is sent and processed by target users in response to a predetermined event, e.g., location update, conveying information related to a seller for which the target users have expressed an interest in receiving.

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