专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07684474B2 Method and apparatus for demodulating signals processed in a transmit diversity mode 有权
标题翻译：用于解调以发射分集模式处理的信号的方法和装置
公开(公告)号：US07684474B2
公开(公告)日：2010-03-23
申请号：US11624198
申请日：2007-01-17
申请人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
摘要翻译：用于在无线通信系统中处理接收信号的解调器架构。解调器包括耦合到组合器的多个相关器。每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。使用具有用于覆盖发送信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。可以分配一个或多个相关器来处理每个发射信号的一个或多个实例。在每个分配的相关器内使用的导频估计是根据该相关器正在处理的信号实例产生的。

2. 发明授权

US07623566B2 Method and apparatus for demodulating signals processed in a transmit diversity mode 有权
标题翻译：用于解调以发射分集模式处理的信号的方法和装置
公开(公告)号：US07623566B2
公开(公告)日：2009-11-24
申请号：US11624194
申请日：2007-01-17
申请人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
摘要翻译：用于在无线通信系统中处理接收信号的解调器架构。解调器包括耦合到组合器的多个相关器。每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。使用具有用于覆盖发送信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。可以分配一个或多个相关器来处理每个发射信号的一个或多个实例。在每个分配的相关器内使用的导频估计是根据该相关器正在处理的信号实例产生的。

3. 发明授权

US07184463B2 Method and apparatus for demodulating signals processed in a transmit diversity mode 有权
标题翻译：用于解调以发射分集模式处理的信号的方法和装置
公开(公告)号：US07184463B2
公开(公告)日：2007-02-27
申请号：US10651446
申请日：2003-08-28
申请人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
摘要翻译：用于在无线通信系统中处理接收信号的解调器架构。解调器包括耦合到组合器的多个相关器。每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。使用具有用于覆盖发送信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。可以分配一个或多个相关器来处理每个发射信号的一个或多个实例。在每个分配的相关器内使用的导频估计是根据该相关器正在处理的信号实例产生的。

4. 发明授权

US06628702B1 Method and apparatus for demodulating signals processed in a transmit diversity mode 有权
公开(公告)号：US06628702B1
公开(公告)日：2003-09-30
申请号：US09594466
申请日：2000-06-14
申请人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1500
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.

5. 发明申请

US20070116101A1 METHOD AND APPARATUS FOR DEMODULATING SIGNALS PROCESSED IN A TRANSMIT DIVERSITY MODE 有权
标题翻译：用于在发射多样性模式下处理信号的方法和装置
公开(公告)号：US20070116101A1
公开(公告)日：2007-05-24
申请号：US11624194
申请日：2007-01-17
申请人： Douglas Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1/00
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
摘要翻译：用于在无线通信系统中处理接收信号的解调器架构。解调器包括耦合到组合器的多个相关器。每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。使用具有用于覆盖发送信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。可以分配一个或多个相关器来处理每个发射信号的一个或多个实例。在每个分配的相关器内使用的导频估计是根据该相关器正在处理的信号实例产生的。

6. 发明申请

US20070116102A1 METHOD AND APPARATUS FOR DEMODULATING SIGNALS PROCESSED IN A TRANSMIT DIVERSITY MODE 有权
公开(公告)号：US20070116102A1
公开(公告)日：2007-05-24
申请号：US11624198
申请日：2007-01-17
申请人： Douglas Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1/00
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.

7. 发明申请

US20110217969A1 DEVICES WITH MULTIPLE SUBSCRIPTIONS THAT UTILIZE A SINGLE BASEBAND-RADIO FREQUENCY RESOURCE CHAIN 审中-公开
标题翻译：具有多个使用单个无线电频率资源链的多个订阅的设备
公开(公告)号：US20110217969A1
公开(公告)日：2011-09-08
申请号：US13039056
申请日：2011-03-02
申请人： Michael K. Spartz , Rajiv R. Nambiar , Way-Shing Lee , Glenn A. Salaman , Francis M. Ngai , Reza Shahidi
发明人： Michael K. Spartz , Rajiv R. Nambiar , Way-Shing Lee , Glenn A. Salaman , Francis M. Ngai , Reza Shahidi
IPC分类号： H04W4/00
CPC分类号： H04W36/14 , H04W8/26 , H04W72/00 , H04W76/16 , H04W88/06
摘要： A mobile communication device with multiple subscriptions includes a single baseband-radio frequency (BB-RF) resource chain. A first identity module, such as a subscriber identity module (SIM), a second identity module (e.g., a second SIM), and a controller are communicatively coupled to the single BB-RF resource chain. The first identity module is associated with a first subscription, and the second identity module is associated with a second subscription. The controller may be configured to arbitrate access to the single BB-RF resource chain to perform a first activity that corresponds to the first subscription or a second activity that corresponds to the second subscription. For example, the controller may interrupt a data session processed by the single BB-RF resource chain in response to receiving information indicating that a voice call is to be processed by the single BB-RF resource chain.
摘要翻译：具有多个订阅的移动通信设备包括单个基带射频（BB-RF）资源链。诸如订户身份模块（SIM），第二身份模块（例如，第二SIM卡）和控制器的第一身份模块通信地耦合到单个BB-RF资源链。第一身份模块与第一订阅相关联，并且第二身份模块与第二订阅相关联。控制器可以被配置为仲裁对单个BB-RF资源链的访问以执行对应于第一订阅的第一活动或对应于第二订阅的第二活动。例如，控制器可以响应于指示语音呼叫将被单个BB-RF资源链处理的接收信息，中断由单个BB-RF资源链处理的数据会话。

8. 发明授权

US07031269B2 Acoustic echo canceller 失效
公开(公告)号：US07031269B2
公开(公告)日：2006-04-18
申请号：US10368888
申请日：2003-02-18
申请人： Way-Shing Lee
发明人： Way-Shing Lee
IPC分类号： H04B3/20
CPC分类号： H04M9/082
摘要： An apparatus and method for echo cancellation is presented. The echo canceller comprises an adaptive filter that tracks the impulse response of the echo path and produces an estimate of the echo. Filter adaptation is controlled by a controller based on the rate of the far-end speech signal, the rate of the near-end signal, an acoustic loss measure, and a double talk hangover indicator. The controller may also comprise a step size adaptation unit for determining the adaptation step size of the adaptive filter. In addition, the controller may comprise a noise replacement unit, which controls replacement of the echo residual signal with comfort noise to ensure echo is completely rejected when only the far-end speaker is talking.

9. 发明授权

US07278043B2 System, method, and apparatus for overload detection in real-time data processing applications 有权
标题翻译：用于实时数据处理应用中的过载检测的系统，方法和装置
公开(公告)号：US07278043B2
公开(公告)日：2007-10-02
申请号：US10093297
申请日：2002-03-06
申请人： Way-Shing Lee
发明人： Way-Shing Lee
IPC分类号： G06F1/00 , G06F1/04 , G06F1/12 , G06F5/06 , G06F15/16
CPC分类号： G06F9/4843
摘要： A method for overload detection according to one embodiment of the invention includes a control process and a data process. In response to a timing signal, the control process sets a state of a timing indicator. Upon execution of a time-constrained operation, the data process checks the state of the timing indicator. In other embodiments, subsequent to an overload detection, an auxiliary data process is configured to execute in a mode that consumes fewer processing cycles.
摘要翻译：根据本发明的一个实施例的用于过载检测的方法包括控制过程和数据处理。响应于定时信号，控制过程设置定时指示器的状态。在执行时间约束的操作时，数据处理检查定时指示器的状态。在其他实施例中，在过载检测之后，辅助数据处理被配置为以消耗更少处理周期的模式执行。

10. 发明申请

US20050198472A1 Digital signal processors with configurable dual-MAC and dual-ALU 有权
标题翻译：具有可配置双MAC和双ALU的数字信号处理器
公开(公告)号：US20050198472A1
公开(公告)日：2005-09-08
申请号：US10794300
申请日：2004-03-04
申请人： Gilbert Sih , De Hsu , Way-Shing Lee , Xufeng Chen
发明人： Gilbert Sih , De Hsu , Way-Shing Lee , Xufeng Chen
IPC分类号： G06F9/30
CPC分类号： G06F9/30014 , G06F9/30032 , G06F9/3875 , G06F9/3885 , G06F9/3893
摘要： DSP architectures having improved performance are described. In an exemplary architecture, a DSP includes two MAC units and two ALUs, where one of the ALUs replaces an adder for one of the two MAC units. This DSP may be configured to operate in a dual-MAC/single-ALU configuration, a single-MAC/dual-ALU configuration, or a dual-MAC/dual-ALU configuration. This flexibility allows the DSP to handle various types of signal processing operations and improves utilization of the available hardware. The DSP architectures further includes pipeline registers that break up critical paths and allow operations at a higher clock speed for greater throughput.
摘要翻译：描述了具有改进性能的DSP架构。在示例性架构中，DSP包括两个MAC单元和两个ALU，其中一个ALU替换两个MAC单元之一的加法器。该DSP可以被配置为以双MAC /单ALU配置，单MAC /双ALU配置或双MAC /双ALU配置来操作。这种灵活性允许DSP处理各种类型的信号处理操作，并提高可用硬件的利用率。 DSP架构还包括流水线寄存器，其分解关键路径，并允许以更高的时钟速度进行操作以获得更高的吞吐量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式