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1. 发明授权

US06396825B1 Method and apparatus for using a pseudo-random signal in a communication system 有权
标题翻译：在通信系统中使用伪随机信号的方法和装置
公开(公告)号：US06396825B1
公开(公告)日：2002-05-28
申请号：US09339416
申请日：1999-06-24
申请人： Steven C. Jasper , Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
发明人： Steven C. Jasper , Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
IPC分类号： H04J300
CPC分类号： G01S5/0221 , G01S5/14 , G01S11/02 , G01S2205/007
摘要： A base site (104) generates a pseudo-random signal based on at least one system parameter known to both the base site and a communication unit (112). The base site (104) then transmits the pseudo-random signal to the communication unit via an idle communication resource (102). Upon receiving the pseudo-random signal, the communication unit (112) determines at least one characteristic of the idle communication resource (102) using the pseudo-random signal.
摘要翻译：基站（104）基于基站和通信单元（112）已知的至少一个系统参数产生伪随机信号。基站（104）然后经由空闲通信资源（102）将伪随机信号发送到通信单元。在接收到伪随机信号时，通信单元（112）使用伪随机信号确定空闲通信资源（102）的至少一个特性。

2. 发明授权

US6167275A Method and apparatus for determining a location of a communication unit in a wireless communication system 失效
标题翻译：用于确定无线通信系统中的通信单元的位置的方法和装置
公开(公告)号：US6167275A
公开(公告)日：2000-12-26
申请号：US992062
申请日：1997-12-17
申请人： Nicholas C. Oros , Steven C. Jasper , Mark A. Birchler
发明人： Nicholas C. Oros , Steven C. Jasper , Mark A. Birchler
IPC分类号： H04W64/00 , H04Q7/20
CPC分类号： H04W64/00
摘要： A wireless communication system (100) that includes a plurality of base sites (101-103) employs a method and apparatus for determining a location of a communication unit (107) in the system. Upon transmission of an information signal (109) by the communication unit, each of the base sites receives the transmitted information signal. A serving base site (e.g., 103) determines a stream of information symbols from the information signal, derives timing information based on the information signal and the stream of information symbols, and conveys the stream of information symbols preferably to at least two non-serving base sites (101-102). The non-serving base sites determine respective timing information based on the information signal received from the communication unit and the stream of information symbols received from the serving base site. The location of the communication unit is then determined by either a base site or a stand-alone processing device (105) based on the serving base site's and non-serving base site's timing information.
摘要翻译：包括多个基站（101-103）的无线通信系统（100）采用用于确定系统中的通信单元（107）的位置的方法和装置。在由通信单元发送信息信号（109）时，每个基站接收发送的信息信号。服务基站（例如，103）从信息信号确定信息符号流，基于信息信号和信息符号流导出定时信息，并将信息符号流优选地传送至至少两个不服务基地（101-102）。非服务基站基于从通信单元接收的信息信号和从服务基站接收到的信息符号流来确定相应的定时信息。然后，由基站或独立处理设备（105）基于服务基站和非服务基站的定时信息来确定通信单元的位置。

3. 发明授权

US5553102A Diversity reception communication system with maximum ratio combining method 失效
标题翻译：具有最大比例组合方法的分集接收通信系统
公开(公告)号：US5553102A
公开(公告)日：1996-09-03
申请号：US348027
申请日：1994-12-01
申请人： Steven C. Jasper , Mark A. Birchler , Nicholas C. Oros
发明人： Steven C. Jasper , Mark A. Birchler , Nicholas C. Oros
IPC分类号： H04B7/08 , H04B7/10
CPC分类号： H04B7/0848
摘要： In a diversity reception communication system (200), a method is provided for recovering data symbols (213) from a transmitted signal. Multiple signals representing the transmitted signal are received via corresponding multiple reception paths (201, 202). For each reception path, values are determined for noise (206), channel quality (207), and for a weighting factor (209) as a function of the channel quality. The signals are processed using diversity combining (212) which includes the weighting factor (209) for each reception path, to provide a resultant signal that more likely represents the transmitted signal than any of the received signals alone. The data symbols (213) are recovered from the resultant signal.
摘要翻译：在分集接收通信系统（200）中，提供了从发送信号中恢复数据符号（213）的方法。通过相应的多个接收路径（201,202）接收表示发送信号的多个信号。对于每个接收路径，确定噪声（206），信道质量（207）和作为信道质量的函数的加权因子（209）的值。使用包括每个接收路径的加权因子（209）的分集组合（212）来处理信号，从而仅提供比任何接收信号更可能地表示发送信号的结果信号。从结果信号中恢复数据符号（213）。

4. 发明授权

US5884215A Method and apparatus for covariance matrix estimation in a weighted least-squares location solution 失效
标题翻译：在加权最小二乘法位置解中协方差矩阵估计的方法和装置
公开(公告)号：US5884215A
公开(公告)日：1999-03-16
申请号：US792331
申请日：1997-01-31
申请人： Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
发明人： Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
IPC分类号： G01S5/00 , G01C21/20 , G01S1/04 , G01S5/06 , G01S19/03 , H04B7/26 , H04W64/00 , G06G7/78 , G01S3/02
CPC分类号： H04W64/00 , G01C21/20 , G01S1/045 , G01S5/06
摘要： Signals exchanged between a fixed infrastructure (110-116) and a mobile unit (160) give rise to M channel quality metrics. The channel quality metrics are mapped, via predetermined relationships (501-503), in to M corresponding time of arrival variances, which in turn are used to derive M-1 time of arrival differential variances. A time of arrival differential weighting matrix including, in part, the time of arrival differential variances, is used to calculate a WLS solution, which solution is an estimate of a location of the mobile unit. This procedure may be implemented using an infrastructure-based location processor (130) operating in conjunction with the mobile unit, or may be performed by either the location processor or mobile unit alone.
摘要翻译：在固定基础设施（110-116）和移动单元（160）之间交换的信号产生M个信道质量度量。通过预定的关系（501-503）将信道质量度量映射到M个对应的到达时间方差，其又用于导出M-1个到达时间差异方差。包括部分到达时间差异方差的到达时间差分加权矩阵用于计算WLS解，该解是估计移动单元的位置。该过程可以使用与移动单元一起操作的基于基础设施的位置处理器（130）来实现，或者可以由位置处理器或移动单元单独执行。

5. 发明授权

US5929806A Method for estimating a location of a mobile unit based on at least two fixed transceivers 失效
标题翻译：用于基于至少两个固定收发器来估计移动单元的位置的方法
公开(公告)号：US5929806A
公开(公告)日：1999-07-27
申请号：US846751
申请日：1997-04-30
申请人： Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
发明人： Mark A. Birchler , Debra A. Jones , Nicholas C. Oros
IPC分类号： G01S5/00 , G01S5/14 , G01S19/09 , G01S19/46 , H04W64/00 , G01S5/02 , H04B7/185
CPC分类号： H04W64/00 , G01S5/14 , G01S5/145 , G01S2205/008 , G01S5/009
摘要： Signals comprising time of transmission indications relative to a common time base (302) are transmitted by at least two fixed transceivers (110-116). When the signals are received by a mobile unit (160), a time of reception indication relative to the common time base is calculated for each signal. Pseudo-ranges are calculated based on the time of transmission and time of reception indications, and a WLS solution location estimate is calculated based on the pseudo-ranges. Essentially the same procedure may be performed on signals transmitted by the mobile unit. Given the common time base between the fixed transceivers and the mobile unit, only two or more signals are required to determine the location estimate. Where GPS receivers are used to supply the common time base, location determinations can still be made when a GPS solution is unavailable.
摘要翻译：包括相对于公共时基（302）的发送指示的时间的信号由至少两个固定收发器（110-116）发送。当移动单元（160）接收到信号时，针对每个信号计算相对于公共时基的接收指示时间。基于发送时间和接收指示时间来计算伪范围，并且基于伪范围计算WLS解决方案位置估计。基本上可以对由移动单元发送的信号执行相同的过程。给定固定收发器和移动单元之间的公共时基，仅需要两个或更多个信号来确定位置估计。在GPS接收机用于提供通用时基的地方，当GPS解决方案不可用时，仍然可以进行位置确定。

6. 发明授权

US06441786B1 Adaptive antenna array and method for control thereof 有权
标题翻译：自适应天线阵列及其控制方法
公开(公告)号：US06441786B1
公开(公告)日：2002-08-27
申请号：US09909602
申请日：2001-07-20
申请人： Steven C. Jasper , Mark Allen Birchler , Nicholas C. Oros , James P. Michels
发明人： Steven C. Jasper , Mark Allen Birchler , Nicholas C. Oros , James P. Michels
IPC分类号： G01S316
CPC分类号： H04B7/0842 , H01Q3/2605
摘要： A method for controlling an adaptive antenna array (50) is provided and includes receiving a plurality of signals, each signal including a series of signal data symbols (42) and signal non-data symbols (38, 40) divided into symbol transmission units with the signal non-data symbols (38, 40) disposed among the signal data symbols (42) in each unit and each signal related to the other signals of the plurality of signals as reflections of an original signal. The method also includes separating the signal non-data symbols (38, 40) from the signal data symbols (42), and comparing the signal non-data symbols (38, 40) to a set of known non-data symbols. The method further includes determining a set of weights according to the comparison of the signal non-data symbols (38, 40) to the set of known non-data symbols, the weights to be combined with the signal data values (42) to limit the effect of interference on the signal data symbols (42). An adaptive antenna array (50) is also provided including a weight calculator (62) including a program which controls the weight calculator (62) to perform the comparing (88, 90) and determining steps (94) of the method discussed above.
摘要翻译：提供了一种用于控制自适应天线阵列（50）的方法，包括接收多个信号，每个信号包括一系列信号数据符号（42）和信号非数据符号（38,40），被分成符号传输单元，设置在每个单元中的信号数据符号（42）中的信号非数据符号（38,40），以及与多个信号的其他信号相关的每个信号作为原始信号的反射。该方法还包括从信号数据符号（42）中分离信号非数据符号（38,40），以及将信号非数据符号（38,40）与一组已知的非数据符号进行比较。该方法还包括根据信号非数据符号（38,40）与所述已知非数据符号集合的比较来确定一组权重，要与信号数据值（42）组合的权重以限制干扰对信号数据符号（42）的影响。还提供了自适应天线阵列（50），其包括权重计算器（62），该权重计算器（62）包括控制权重计算器（62）执行上述方法（88,90）和确定步骤（94）的程序。

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