专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明申请

US20080002759A1 Method and apparatus for interference estimation in a Generalized Rake receiver 有权
标题翻译：广义耙式接收机中干扰估计的方法和装置
公开(公告)号：US20080002759A1
公开(公告)日：2008-01-03
申请号：US11479483
申请日：2006-06-30
申请人： Douglas A. Cairns , Gregory E. Bottomley
发明人： Douglas A. Cairns , Gregory E. Bottomley
IPC分类号： H04B1/707 , H04K1/10
CPC分类号： H04B1/712 , H04B2201/709727
摘要： According to one embodiment taught herein, a method of determining impairment correlations between a plurality of delays of interest for a received CDMA signal comprises generating kernel functions as samples of a net channel response of the received CDMA signal taken at defined chip sampling phases for delay differences between the plurality of delays of interest. In a parametric Generalized Rake (G-Rake) receiver embodiment, the delays of interest represent the delay positions of the fingers being used to characterized received signal. In a chip equalizer receiver embodiment, the delays of interest represent the delay positions of the equalizer taps. The method continues with determining impairment correlations based on convolving the kernel functions. Corresponding receiver circuits, including an impairment correlation estimation circuit configured for parametric G-Rake operation, may be implemented in a variety of communication devices and systems, such as in wireless communication network base stations and mobile stations.
摘要翻译：根据本文教导的一个实施例，确定接收的CDMA信号的多个感兴趣延迟之间的损害相关性的方法包括：生成内核函数，作为在限定的码片采样相位处采用的接收CDMA信号的净信道响应的样本，用于延迟差在多个感兴趣的延迟之间。在参数广义耙（G-Rake）接收机实施例中，感兴趣的延迟表示用于指定的接收信号的手指的延迟位置。在码片均衡器接收器实施例中，感兴趣的延迟表示均衡器抽头的延迟位置。该方法继续确定基于卷积核函数的损害相关性。包括配置用于参数G-Rake操作的损害相关估计电路的对应的接收器电路可以在诸如无线通信网络基站和移动站中的各种通信设备和系统中实现。

82. 发明授权

US07142581B2 Methods and systems for selective frequency hopping in multiple mode communication systems 有权
公开(公告)号：US07142581B2
公开(公告)日：2006-11-28
申请号：US09800143
申请日：2001-03-06
申请人： Ali S. Khayrallah , Gregory E. Bottomley
发明人： Ali S. Khayrallah , Gregory E. Bottomley
IPC分类号： H04B15/00
CPC分类号： H04L1/0015 , H04B1/713 , H04B7/2621 , H04L1/0001 , H04L1/0003 , H04L1/0009
摘要： Methods and systems for selecting a frequency hopping mode for a communication in a communication system having a plurality of transmission schemes are provided. One of the plurality of transmission schemes to be used for the communication is determined. One of a plurality of candidate frequency hopping modes is selected as the frequency hopping mode for the communication based on the determined transmission scheme for the communication. Methods and systems for transmitting a communication packet in a communication system having a plurality of transmission schemes are also provided.

83. 发明授权

US06922434B2 Apparatus and methods for finger delay selection in RAKE receivers 有权
标题翻译： RAKE接收机中手指延迟选择的装置和方法
公开(公告)号：US06922434B2
公开(公告)日：2005-07-26
申请号：US09845950
申请日：2001-04-30
申请人： Yi-Pin Eric Wang , Gregory E. Bottomley , Kenzo Urabe
发明人： Yi-Pin Eric Wang , Gregory E. Bottomley , Kenzo Urabe
IPC分类号： H04B1/7117 , H04B1/712 , H04B1/69
CPC分类号： H04B1/712 , H04B1/7117 , H04B2201/709727
摘要： Methods of recovering information encoded in a spread spectrum signal transmitted according to a spreading sequence in a communications medium are provided in which a spread spectrum signal is received from the communications medium and correlated with a spreading sequence to produce a plurality of time-offset correlations. Some of these time-offset correlations may be designed to cancel out known interfering signals. A subset of the plurality of time-offsets may then be selected, and corresponding traffic correlations may then be combined using a weighted combination to estimate information encoded in the transmitted spread spectrum signal. Receivers for implementing these methods are also provided.
摘要翻译：提供了恢复在通信介质中根据扩展序列发送的扩频信号中编码的信息的方法，其中从通信介质接收扩频信号并与扩展序列相关联以产生多个时间偏移相关。这些时间偏移相关中的一些可被设计为消除已知的干扰信号。然后可以选择多个时间偏移的子集，然后可以使用加权组合来组合对应的业务相关性，以估计在所发送的扩展频谱信号中编码的信息。还提供了实现这些方法的接收器。

84. 发明授权

US06917629B1 Rate detection in radio communication systems 有权
标题翻译：无线电通信系统中的速率检测
公开(公告)号：US06917629B1
公开(公告)日：2005-07-12
申请号：US09152063
申请日：1998-09-11
申请人： Rajaram Ramésh , Gregory E. Bottomley
发明人： Rajaram Ramésh , Gregory E. Bottomley
IPC分类号： H04L1/00 , H04L1/08 , H04J3/06
CPC分类号： H04L1/0038 , H04L1/0013 , H04L1/0046 , H04L1/0054 , H04L1/0061 , H04L1/08
摘要： An improved system and method for rate detection of transmitted signals is disclosed for use in a IS-95 CDMA downlink. For each speech frame, one of four possible bit rates is used to encode the frame according to the standard. The present invention describes a receiver and various processes that are able to detect which rate was sent without the aid of flag bits or other mode indication information. According to various embodiments of the invention different rate detection processes which can exploit additional code information, such as CRC checks and convolutional coding, are disclosed.
摘要翻译：公开了用于IS-95 CDMA下行链路中的用于传输信号的速率检测的改进的系统和方法。对于每个语音帧，四种可能的比特率之一用于根据标准对帧进行编码。本发明描述了一种接收机和能够检测哪个速率被发送而不借助于标志位或其他模式指示信息的各种过程。根据本发明的各种实施例，公开了可以利用附加码信息（诸如CRC校验和卷积编码）的不同速率检测过程。

85. 发明授权

US06842479B2 Method and apparatus for interference cancellation in a rake receiver 有权
标题翻译：用于在耙式接收机中进行干扰消除的方法和装置
公开(公告)号：US06842479B2
公开(公告)日：2005-01-11
申请号：US09992094
申请日：2001-11-05
申请人： Gregory E. Bottomley
发明人： Gregory E. Bottomley
IPC分类号： H04B1/10 , H04B1/707 , H04B1/7095 , H04B1/7113 , H04B1/712 , H04B7/005 , H04B7/02 , H04L25/02 , H04L25/03 , H04L27/30
CPC分类号： H04B1/712 , H04B1/7095 , H04B1/7113 , H04B2201/70701 , H04L25/0204 , H04L25/0328 , H04L25/03299 , H04L25/03337
摘要： Systems and methods for despreading received spread spectrum signals are described. Despreading can be performed using both channel estimates and impairment correlation estimates. Techniques for selecting delays of interest are also described, along with a despreading mechanism which saves power by operating only on delays of interest.
摘要翻译：描述了用于解扩接收扩频信号的系统和方法。可以使用信道估计和损伤相关估计来执行解扩。还描述了用于选择感兴趣的延迟的技术，以及解扩机制，其通过仅在感兴趣的延迟上操作来节省功率。

86. 发明授权

US06832080B1 Apparatus for and method of adapting a radio receiver using control functions 有权
标题翻译：使用控制功能适应无线电接收机的装置和方法
公开(公告)号：US06832080B1
公开(公告)日：2004-12-14
申请号：US09660050
申请日：2000-09-12
申请人： Huseyin Arslan , Karl James Molnar , Gregory E. Bottomley , Ali S. Khayrallah
发明人： Huseyin Arslan , Karl James Molnar , Gregory E. Bottomley , Ali S. Khayrallah
IPC分类号： H04B110
CPC分类号： H04B1/0003 , H04B1/1027 , H04B1/7105 , H04B2201/7071 , H04L1/0001 , H04L25/03178 , H04L25/03305 , H04L25/03331
摘要： An adaptive radio receiver utilizes control functions derived from received signals in an interference-limited environment to decide whether to implement conventional single-user demodulation or joint demodulation. The decision to implement joint or conventional demodulation is based upon the values of estimates derived for Doppler spread, carrier-to-interference plus noise, dispersiveness and the likelihood of the presence of a dominant interferer.
摘要翻译：自适应无线电接收机利用在受干扰限制的环境中从接收信号导出的控制功能来决定是否实施传统的单用户解调或联合解调。实施联合或常规解调的决定基于针对多普勒扩展，载波干扰加噪声，分散性和存在显着干扰源的可能性的估计值。

87. 发明授权

US06363104B1 Method and apparatus for interference cancellation in a rake receiver 有权
标题翻译：用于在耙式接收机中进行干扰消除的方法和装置
公开(公告)号：US06363104B1
公开(公告)日：2002-03-26
申请号：US09165647
申请日：1998-10-02
申请人： Gregory E. Bottomley
发明人： Gregory E. Bottomley
IPC分类号： H04B166
CPC分类号： H04B1/712 , H04B1/7095 , H04B1/7113 , H04B2201/70701 , H04L25/0204 , H04L25/0328 , H04L25/03299 , H04L25/03337
摘要： Systems and methods for despreading received spread spectrum signals are described. Despreading can be performed using both channel estimates and impairment correlation estimates. Techniques for selecting delays of interest are also described, along with a despreading mechanism which saves power by operating only on delays of interest.
摘要翻译：描述了用于解扩接收扩频信号的系统和方法。可以使用信道估计和损伤相关估计来执行解扩。还描述了用于选择感兴趣的延迟的技术，以及解扩机制，其通过仅在感兴趣的延迟上操作来节省功率。

88. 发明授权

US06252918B1 Method and apparatus for digital symbol detection using medium response estimates 有权
标题翻译：使用介质响应估计的数字符号检测方法和装置
公开(公告)号：US06252918B1
公开(公告)日：2001-06-26
申请号：US09267378
申请日：1999-03-15
申请人： Gregory E. Bottomley , Karl Molnar , Rajaram Ramesh
发明人： Gregory E. Bottomley , Karl Molnar , Rajaram Ramesh
IPC分类号： H04B110
CPC分类号： H04B1/707 , H04B7/005 , H04L25/0202 , H04L25/03178 , H04L25/03299
摘要： According to the present invention, the effects of the transmission medium on transmitted information symbols are estimated separately from other effects, e.g., those associated with receive and transmit filters, using knowledge of the pulse shaping. The medium response estimate is then used to detect information symbols. Previously, receivers had used estimates of the composite channel to detect symbols. This, however, assumed uncorrelated noise, which is not always the case.
摘要翻译：根据本发明，利用脉冲整形的知识，传输介质对所发送的信息符号的影响与其他效果（例如与接收和发射滤波器相关的效果）分开估计。然后使用介质响应估计来检测信息符号。以前，接收机已经使用复合信道的估计来检测符号。然而，这是假设不相关的噪音，并不总是这样。

89. 发明授权

US6108517A Methods and apparatus for joint demodulation of adjacent channel signals in digital communications systems 失效
标题翻译：数字通信系统中相邻信道信号联合解调的方法和装置
公开(公告)号：US6108517A
公开(公告)日：2000-08-22
申请号：US901694
申请日：1997-07-28
申请人： Huseyin Arslan , Someshwar C. Gupta , Gregory E. Bottomley , Sandeep Chennakeshu
发明人： Huseyin Arslan , Someshwar C. Gupta , Gregory E. Bottomley , Sandeep Chennakeshu
IPC分类号： H04J1/12 , H04B1/10 , H04B7/26 , H04L25/02 , H04L25/03 , H04Q7/36 , H04B7/10
CPC分类号： H04L25/03331 , H04L25/0204
摘要： Methods and apparatus for receiving adjacent channel signals wherein adjacent channel interference effects are minimized through joint demodulation of the adjacent channel signals. A channel associated with each signal and each corresponding frequency band is estimated and used to form joint branch metrics for joint sequence estimation. In an exemplary embodiment, a baseband processor receives baseband samples corresponding to at least one carrier frequency, and then jointly demodulates at least two information streams corresponding to different carrier frequencies in dependence upon the received baseband samples. In another embodiment, a joint channel estimator receives at least two baseband sample streams, each stream corresponding to a different frequency band, and jointly estimates medium responses for each of at least two information signals which were transmitted in different frequency bands.
摘要翻译：用于接收相邻信道信号的方法和装置，其中相邻信道干扰效应通过相邻信道信号的联合解调被最小化。与每个信号和每个对应的频带相关联的信道被估计并用于形成用于联合序列估计的联合分支度量。在示例性实施例中，基带处理器接收对应于至少一个载波频率的基带采样，然后根据所接收的基带采样，共同解调对应于不同载波频率的至少两个信息流。在另一个实施例中，联合信道估计器接收对应于不同频带的每个流的至少两个基带采样流，并联合估计在不同频带中发送的至少两个信息信号中的每一个的媒体响应。

90. 发明授权

US6073005A Systems and methods for identifying emergency calls in radiocommunication systems 失效
标题翻译：用于识别无线电通信系统中的紧急呼叫的系统和方法
公开(公告)号：US6073005A
公开(公告)日：2000-06-06
申请号：US839860
申请日：1997-04-22
申请人： Alex K. Raith , Gregory E. Bottomley , John Diachina
发明人： Alex K. Raith , Gregory E. Bottomley , John Diachina
IPC分类号： H04W4/22 , H04H7/04 , H04Q7/32
CPC分类号： H04W4/22 , H04W76/007
摘要： The handling of emergency calls, e.g., 911 calls, should be performed on an expedited basis. In radiocommunication systems, knowledge by the mobile unit that an emergency call is being placed can be used to expedite and optimize emergency call handling. Various techniques are described herein to identify emergency calls when placed by a mobile user. Moreover, the provision of auxiliary alarm functions for the mobile unit are also described.
摘要翻译：紧急呼叫的处理，例如911呼叫应该在加急的基础上进行。在无线电通信系统中，可以使用由移动单元发出的紧急呼叫的知识来加速和优化紧急呼叫处理。本文描述了各种技术，以在由移动用户放置时识别紧急呼叫。此外，还描述了为移动单元提供辅助报警功能。

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