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公开(公告)号：US5347284A
公开(公告)日：1994-09-13
申请号：US662585
申请日：1991-02-28
申请人： John P. Volpi , Leonard J. LaPadula, III , Chyi H. Lu , Hugh L. Scott , Mitchel B. Stiles , David W. Rekieta
发明人： John P. Volpi , Leonard J. LaPadula, III , Chyi H. Lu , Hugh L. Scott , Mitchel B. Stiles , David W. Rekieta
摘要： There is disclosed a global positioning system receiver method and system which converts the analog signals to digital signals prior to performing signal acquisition and GPS unique processing functions. The A/D converter uses full null zone processing to increase anti-jamming capability and 4-level output to reduce signal processing. A single analog and digital channel is used for both the L1 and L2 channels as well as for all P(Y)-code and C/A-code thus allowing full multi channel tracking with several channels each tracking a separate signal while the remainder of the channels rove over all of the signals on the alternate L-band with programmable duty cycles. The system allows for Y-code substitution for P-code by multiplexing a portion of the Y-code generated between multiple channels.
摘要翻译： 公开了一种在执行信号采集和GPS独特处理功能之前将模拟信号转换为数字信号的全球定位系统接收机方法和系统。 A / D转换器使用全零区域处理来增加抗干扰能力和4级输出，以减少信号处理。 单个模拟和数字通道用于L1和L2通道以及所有P（Y）代码和C / A代码，从而允许完全多通道跟踪，具有多个通道，每个通道跟踪单独的信号，而剩余的 通道可以通过可编程占空比在交替的L波段上传播所有信号。 该系统允许通过复用在多个信道之间生成的Y码的一部分来对P码进行Y码替换。
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2.发明授权Method and system for a multi channel and search global position system signal processor 失效用于多通道和搜索全球定位系统信号处理器的方法和系统
公开(公告)号：US5535237A
公开(公告)日：1996-07-09
申请号：US192210
申请日：1994-02-04
申请人： Leonard J. LaPadula, III , George W. Pawlowski , David W. Rekieta , Hugh L. Scott , Chyi H. Lu , John P. Volpi , Mitchel B. Stiles
发明人： Leonard J. LaPadula, III , George W. Pawlowski , David W. Rekieta , Hugh L. Scott , Chyi H. Lu , John P. Volpi , Mitchel B. Stiles
CPC分类号： G01S19/24 , G01S19/21 , G01S19/32 , G01S19/37 , H04B2201/70715
摘要： There is disclosed a multi channel GPS digital signal processor on a single IC. Each channel contains circuitry to process L1 or L2 P(Y) and C/A-code signals. In addition a search processor is included to achieve fast signal acquisition. Low power adder/accumulators have been designed to provide for a high precision digital oscillator whose output is synchronous to a high speed clock. The IC contains a full low power null detector and eight correlators to aid in signal acquisition.
摘要翻译： 在单个IC上公开了一种多通道GPS数字信号处理器。 每个通道包含处理L1或L2 P（Y）和C / A码信号的电路。 另外还包括搜索处理器来实现快速信号采集。 低功率加法器/累加器被设计为提供高精度数字振荡器，其输出与高速时钟同步。 该IC包含一个完整的低功率零点检测器和八个相关器，以帮助信号采集。
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公开(公告)号：US07006469B1
公开(公告)日：2006-02-28
申请号：US10112117
申请日：2002-03-28
IPC分类号： H04Q7/00
CPC分类号： H04W72/14 , H04W24/00 , H04W48/08 , H04W72/0413 , H04W72/0446 , H04W72/0453 , H04W74/0833 , H04W84/14
摘要： A method and protocol for dynamic downstream and upstream frequency assignment in a localized microwave distribution system. Downstream frequencies can be assigned via a base station periodic broadcast of a frequency assignment table for a home common control channel in each base station downstream frequency. Customer premise equipment monitors the home common control channel for a frequency assignment message, which preferably includes a table mapping each customer premise equipment, or that equipment for which there has been no recent upstream communication. Downstream frequencies may also be assigned by a customer premise equipment request to a base station sent over a common control channel associated with an upstream frequency associated with a downstream frequency identified during a scan of downstream frequencies. A modified aloha contention algorithm is used if multiple customer premise equipment requests conflict. Upstream frequency and time slot requests are done in similar fashion, with a customer premise equipment sending a request over either common control channel of a currently assigned upstream frequency or a common control channel associated with a downstream frequency with which the customer premise equipment is associated.
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4.发明授权公开(公告)号：US06404751B1
公开(公告)日：2002-06-11
申请号：US09153312
申请日：1998-09-15
IPC分类号： H04Q700
CPC分类号： H04W72/14 , H04W24/00 , H04W48/08 , H04W72/0413 , H04W72/0446 , H04W72/0453 , H04W74/0833 , H04W84/14
摘要： A method and protocol for dynamic downstream and upstream frequency assignment in a localized microwave distribution system. Downstream frequencies can be assigned via a base station periodic broadcast of a frequency assignment table for a home common control channel in each base station downstream frequency. Customer premise equipment monitors the home common control channel for a frequency assignment message, which preferably includes a table mapping each customer premise equipment, or that equipment for which there has been no recent upstream communication. Downstream frequencies may also be assigned by a customer premise equipment request to a base station sent over a common control channel associated with an upstream frequency associated with a downstream frequency identified during a scan of downstream frequencies. A modified aloha contention algorithm is used if multiple customer premise equipment requests conflict. Upstream frequency and time slot requests are done in similar fashion, with a customer premise equipment sending a request over either common control channel of a currently assigned upstream frequency or a common control channel associated with a downstream frequency with which the customer premise equipment is associated.
摘要翻译： 一种用于局部微波分布系统中动态下行和上行频率分配的方法和协议。 下行频率可以通过基站周期性广播来分配，每个基站在每个基站下行频率中用于归属公共控制信道的频率指配表。 客户驻地设备监视用于频率分配消息的家庭公共控制信道，其优选地包括映射每个客户驻地设备的表格，或者没有最近的上游通信的设备。 下行频率也可以由客户驻地设备请求分配给通过与在下行频率的扫描期间识别的下游频率相关联的上行频率相关联的公共控制信道发送的基站。 如果多个客户端设备请求冲突，则使用修改的aloha争用算法。 以类似的方式完成上行频率和时隙请求，客户驻地设备通过与当前分配的上行频率的公共控制信道或与客户驻地设备相关联的下行频率相关联的公共控制信道发送请求。
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