专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20090258628A1 Time-Error and Frequency-Error Correction in a Multi-Carrier Wireless Communications System 有权
标题翻译：多载波无线通信系统中的时间误差和频率误差校正
公开(公告)号：US20090258628A1
公开(公告)日：2009-10-15
申请号：US12198366
申请日：2008-08-26
申请人： Bengt Lindoff , Bo Bernhardsson , Fredrik Nordstrom
发明人： Bengt Lindoff , Bo Bernhardsson , Fredrik Nordstrom
IPC分类号： H04B1/10
CPC分类号： H04L27/0014
摘要： Methods and apparatus for automatic frequency control in wireless receivers configured to simultaneously receive multiple carrier signals at distinct radio frequencies are disclosed. An exemplary wireless device comprises at least first and second radio front-end circuits configured to receive first and second wireless communication signals transmitted via first and second radio-frequency carriers at distinct first and second radio frequencies, respectively, a control processor configured to designate a master carrier signal and a slave carrier signal from among the received wireless communication signals, and a frequency error estimation circuit configured to estimate a first receiver frequency error using the received master carrier signal. The control processor is further configured to calculate a second receiver frequency error from the first receiver frequency error, for use in compensating one or more receiver processes performed on the slave carrier signal.
摘要翻译：公开了用于在不同射频同时接收多个载波信号的无线接收机中的自动频率控制的方法和装置。示例性无线设备包括至少第一和第二无线电前端电路，其被配置为分别接收在不同的第一和第二无线电频率处经由第一和第二无线电频率载波发送的第一和第二无线通信信号，控制处理器被配置为指定来自所接收的无线通信信号中的主载波信号和从载波信号;以及频率误差估计电路，被配置为使用所接收的主载波信号来估计第一接收机频率误差。控制处理器还被配置为从第一接收机频率误差计算第二接收机频率误差，用于补偿对从属载波信号执行的一个或多个接收机处理。

42. 发明授权

US07433433B2 Channel estimation by adaptive interpolation 有权
标题翻译：通过自适应插值的信道估计
公开(公告)号：US07433433B2
公开(公告)日：2008-10-07
申请号：US10920928
申请日：2004-08-18
申请人： Leif Wilhelmsson , Bo Bernhardsson , Lennart Andersson
发明人： Leif Wilhelmsson , Bo Bernhardsson , Lennart Andersson
IPC分类号： H04B1/10
CPC分类号： H04L25/0234 , H04L5/0048 , H04L25/022 , H04L25/0222 , H04L27/2647
摘要： Methods and apparatus that achieve good channel estimation without using unnecessarily complex interpolation filters are described. Adaptive interpolation filtering of a signal in a receiver includes determining at least one correlation function parameter of the channel and determining a filter configuration based on the correlation function parameter. Interpolation filtering is then performed on the signal using the determined filter configuration. The interpolation may be performed in time, where a Doppler frequency shift can serve as the correlation function parameter, or in frequency, where a root mean square or maximum delay spread can serve as the correlation function parameter, or both. A worst case signal-to-noise ratio may be used in determining the filter configuration, or, optionally, the signal-to-noise ratio can determined in real time. The filter configuration can be determined in real time or selected from one of a plurality of predetermined configurations having different complexities.
摘要翻译：描述了不使用不必要的内插滤波器实现良好信道估计的方法和装置。接收机中的信号的自适应插值滤波包括确定信道的至少一个相关函数参数，并且基于相关函数参数来确定滤波器配置。然后使用确定的滤波器配置对信号执行插值滤波。可以在时间上执行插值，其中多普勒频移可以用作相关函数参数，或频率，其中均方根或最大延迟扩展可以用作相关函数参数，或两者。可以使用最坏情况的信噪比来确定滤波器配置，或者可选地，可以实时地确定信噪比。滤波器配置可以实时确定或者从具有不同复杂度的多个预定配置之一中选择。

43. 发明授权

US07302276B2 Method and system for determining uplink/downlink path-loss difference 有权
标题翻译：确定上行链路/下行链路路径损耗差异的方法和系统
公开(公告)号：US07302276B2
公开(公告)日：2007-11-27
申请号：US10926742
申请日：2004-08-26
申请人： Bo Bernhardsson , Jonas Ohlsson , Mikael Zirèn
发明人： Bo Bernhardsson , Jonas Ohlsson , Mikael Zirèn
IPC分类号： H04B7/00 , H04Q7/20
CPC分类号： H04W52/246 , H04B17/327 , H04W52/14 , H04W52/228 , H04W52/242 , H04W52/245 , H04W52/50
摘要： Methods and apparatus are described for estimating a path-loss difference between uplink and downlink communications at a first node communicating with a second node in a communication system. A quantity of access request preambles transmitted by the first node to the second node before an acknowledgement from the second node of successful receipt of a preamble is received at the first node is determined. A difference between an uplink path-loss attributed to communications from the first node to the second node and a downlink path-loss attributed to communications to the first node from the second node is estimated based on the transmitted preamble quantity determination. Once the path-loss difference is estimated, the estimate can be used for many purposes, such as to determine a transmission power of the first node.
摘要翻译：描述了用于估计在通信系统中与第二节点通信的第一节点处的上行链路和下行链路通信之间的路径损耗差异的方法和装置。在第一节点处接收到来自第二节点的成功接收的确认之前由第一节点发送到第二节点的接入请求前导码的数量被确定。基于所发送的前导码量确定，估计归因于从第一节点到第二节点的通信的上行链路路径损耗与归因于从第二节点到第一节点的通信的下行链路路径损耗之间的差异。一旦路径损耗差被估计，该估计可用于许多目的，例如确定第一节点的发射功率。

44. 发明申请

US20070171813A1 METHOD AND APPARATUS FOR FAST FFT PROCESSING OF PAGING INFORMATION 有权
公开(公告)号：US20070171813A1
公开(公告)日：2007-07-26
申请号：US11276384
申请日：2006-02-27
申请人： Bengt Lindoff , Thomas Olsson , Bo Bernhardsson
发明人： Bengt Lindoff , Thomas Olsson , Bo Bernhardsson
IPC分类号： H04Q7/00 , H04J11/00
CPC分类号： H04L27/2647 , H04W28/14 , H04W68/00
摘要： A method and apparatus for fast FFT processing of paging information in a user equipment (UE). The apparatus comprises a front end receiver (201) adapted to receive and down convert an RF signal to a baseband signal having a first part and a second part. An optional analog filter (202) is coupled to the output of the front end receiver (201) and is adapted to filter the analog signal. An analog to digital (A/D) converter (203) is coupled to the optional analog filter (202) and is adapted to convert the analog signal to a first digital signal. A first digital filter (204) is coupled to a first branch from the output of the A/D converter (203). The first digital filter (204) is adapted to digitally process the first digital signal. A buffer (206) is coupled to the digital filter (204) and is adapted to store the frist digital signal. The first digital filter (204) has a predetermined bandwidth (BWA). An FFTN processor (212) having N stages is adapted to process the digital signal. The FFTN processor is coupled to the output of the buffer (206). An optional digital mixer (208) is switchably coupled to a second branch from the output of the A/D converter (203). A clock timer (205) is adapted to switchably couple the optional digital mixer (208) to the second branch from the output of the A/D converter (203). A second digital filter (209) is coupled to the output of the digital mixer (208). Digital mixer (208) is adapted to digitally down convert the first digital signal to the center frequency of a paging information (fp) signal within the first digital signal. An FFTM processor (210) having M stages is coupled to the output of the second digital low pass filter and a paging detector (211) is coupled to the output of the FFTM processor (210). The paging detector (211) is adapted to detect a paging information signal. Using the method and apparatus of the present invention, the time for FFT processing of the paging information is significantly reduced for wide BW S3G implementations.

45. 发明申请

US20070116100A1 Simplified generalized rake receiver method and apparatus 有权
标题翻译：简化的广义Rake接收机的方法和装置
公开(公告)号：US20070116100A1
公开(公告)日：2007-05-24
申请号：US11412543
申请日：2006-04-27
申请人： Bengt Lindoff , Bo Bernhardsson , Jonas Ohlsson
发明人： Bengt Lindoff , Bo Bernhardsson , Jonas Ohlsson
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B2201/7071 , H04B2201/709727
摘要： According to a method and apparatus taught herein, a Rake receiver circuit selectively operates with or without colored interference compensation, in dependence on current operating conditions. For example, in one embodiment the Rake receiver circuit comprises one or more processing circuits that are configured to generate Rake combining weights in a first mode of operation as first combining weights calculated from channel estimates corresponding to a set of Rake signal fingers. In a second mode, the processing circuit(s) generate the Rake combining weights as compensated combining weights obtained by compensating the first combining weights with second combining weights calculated from colored interference estimates corresponding to a set of Rake probing fingers.
摘要翻译：根据本文教导的方法和装置，Rake接收器电路根据当前的操作条件选择性地在有或没有有色干涉补偿的情况下操作。例如，在一个实施例中，Rake接收机电路包括一个或多个处理电路，其被配置为以第一操作模式生成Rake组合权重作为从对应于一组Rake信号指的信道估计计算的第一组合权重。在第二模式中，处理电路产生Rake组合权重作为通过用对应于一组耙探测手指的有色干涉估计计算的第二组合权重来补偿第一组合权重而获得的补偿组合权重。

46. 发明授权

US07149538B2 Wireless transceivers, methods, and computer program products for restricting transmission power based on signal-to-interference ratios 有权
标题翻译：无线收发器，方法和计算机程序产品，用于根据信号干扰比来限制发射功率
公开(公告)号：US07149538B2
公开(公告)日：2006-12-12
申请号：US10612373
申请日：2003-07-02
申请人： Bengt Lindoff , Bo Bernhardsson , Torgny Palenius
发明人： Bengt Lindoff , Bo Bernhardsson , Torgny Palenius
IPC分类号： H04Q7/20 , H04B7/00
CPC分类号： H04W52/367 , H04W52/228 , H04W52/283 , H04W52/288
摘要： A method for controlling transmission power from a wireless transceiver. Signal to interference ratios (SIRs) are estimated for a signal that is received from another wireless device. An out-of-sync condition between the wireless transceiver and the other wireless device is identified based on the SIRs. Change of the transmission power from the wireless transceiver is restricted based on the SIRs and when an out-of-sync condition has not been identified.
摘要翻译：一种用于控制来自无线收发器的发射功率的方法。对于从另一无线设备接收到的信号估计信号与干扰比（SIR）。基于SIR识别无线收发器与另一无线设备之间的不同步状态。来自无线收发器的发射功率的改变基于SIR被限制并且当不同步条件尚未被识别时被限制。

47. 发明申请

US20050250526A1 Synchronization detection methods and apparatus 有权
标题翻译：同步检测方法和装置
公开(公告)号：US20050250526A1
公开(公告)日：2005-11-10
申请号：US10839926
申请日：2004-05-06
申请人： Bengt Lindoff , Bo Bernhardsson
发明人： Bengt Lindoff , Bo Bernhardsson
IPC分类号： H04B7/005 , H04W52/40 , H04W52/54 , H04B1/034
CPC分类号： H04W52/40 , H04W52/54
摘要： Methods and apparatus for determining when uplink synchronization has been achieved when entering or adding a link in soft handover to a new node in a communication system. Transmit power control (TPC) commands from the new link are not included in a TPC command combination until an uplink synchronization detector determines that synchronization has been achieved. Since in many communication systems, a pattern of TPC commands is transmitted on the new downlink as long as the new node's uplink is not synchronized, the uplink synchronization detector can determine whether synchronization has been achieved by determining whether the TPC command pattern is present in the new downlink. In this way, the UL synchronization detector reduces the occurrence and magnitude of unwanted peaks and dips in uplink transmitted power.
摘要翻译：当在通信系统中向新的节点进行软切换中输入或添加链路时，确定何时上行链路同步已经实现的方法和装置。直到上行链路同步检测器确定已经实现同步，才能将来自新链路的发送功率控制（TPC）命令包含在TPC命令组合中。由于在许多通信系统中，只要新节点的上行链路不同步，则在新的下行链路上传输TPC命令的模式，上行链路同步检测器可以通过确定是否存在TPC命令模式来确定是否已经实现了同步新下行链路。以这种方式，UL同步检测器减少了上行链路发送功率中出现的不必要的峰值和幅度。

48. 发明申请

US20050143118A1 Method and system for determining uplink/downlink path-loss difference 有权
标题翻译：确定上行链路/下行链路路径损耗差异的方法和系统
公开(公告)号：US20050143118A1
公开(公告)日：2005-06-30
申请号：US10926742
申请日：2004-08-26
申请人： Bo Bernhardsson , Jonas Ohlsson , Mikael Ziren
发明人： Bo Bernhardsson , Jonas Ohlsson , Mikael Ziren
IPC分类号： H04B7/005 , H04B17/00 , H04W52/14 , H04W52/22 , H04W52/24 , H04W52/50 , H04Q7/20
CPC分类号： H04W52/246 , H04B17/327 , H04W52/14 , H04W52/228 , H04W52/242 , H04W52/245 , H04W52/50
摘要： Methods and apparatus are described for estimating a path-loss difference between uplink and downlink communications at a first node communicating with a second node in a communication system. A quantity of access request preambles transmitted by the first node to the second node before an acknowledgement from the second node of successful receipt of a preamble is received at the first node is determined. A difference between an uplink path-loss attributed to communications from the first node to the second node and a downlink path-loss attributed to communications to the first node from the second node is estimated based on the transmitted preamble quantity determination. Once the path-loss difference is estimated, the estimate can be used for many purposes, such as to determine a transmission power of the first node.
摘要翻译：描述了用于估计在通信系统中与第二节点通信的第一节点处的上行链路和下行链路通信之间的路径损耗差异的方法和装置。在第一节点处接收到来自第二节点的成功接收的确认之前由第一节点发送到第二节点的接入请求前导码的数量被确定。基于所发送的前导码量确定，估计归因于从第一节点到第二节点的通信的上行链路路径损耗与归因于从第二节点到第一节点的通信的下行链路路径损耗之间的差异。一旦路径损耗差被估计，该估计可用于许多目的，例如确定第一节点的发射功率。

49. 发明申请

US20050047534A1 Method and system for adaptable receiver parameters 有权
标题翻译：适应性接收机参数的方法和系统
公开(公告)号：US20050047534A1
公开(公告)日：2005-03-03
申请号：US10830387
申请日：2004-04-22
申请人： Bengt Lindoff , Bo Bernhardsson
发明人： Bengt Lindoff , Bo Bernhardsson
IPC分类号： H04L27/00 , H04L27/38 , H04L27/08 , H04B3/46
CPC分类号： H04L27/3809 , H04L27/00
摘要： A method and system are described for processing a received signal at a receiver in a communication system. The receiver includes a digital filter and automatic gain control means. Information indicating the frequency band of operation and the type of service of the received signal is received at the receiver from the communication system. The gain and filtering parameters of the receiver are set according to the received information. The received signal is processed at the receiver using the gain and filtering parameters. Optionally, a determination of whether the received signal contains adjacent channel interference above a predetermined allowable threshold may also be made and the determination may then be used in setting the gain and filtering parameters.
摘要翻译：描述了用于在通信系统中的接收机处理接收信号的方法和系统。接收机包括数字滤波器和自动增益控制装置。在通信系统的接收机处接收表示接收信号的工作频带和接收信号的种类的信息。根据接收到的信息设置接收机的增益和滤波参数。使用增益和滤波参数在接收机处理接收到的信号。可选地，还可以做出接收信号是否包含高于预定允许阈值的相邻信道干扰的确定，然后可以将该确定用于设置增益和滤波参数。

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