公开(公告)号：FI980762A

公开(公告)日：1998-10-08

申请号：FI980762

申请日：1998-04-02

Applicant: MOTOROLA INC

Inventor： BLANCO ALEJANDRO G ,  YOUNG RICHARD S ,  EMAMI SHAHRIAR ,  MILLER JIANPING

IPC: H03J7/04 ,  H03J7/02

Abstract: A radio device requires a tunable transceiver such that the transceiver can be accurately set to a desired frequency. When a signal with known frequency accuracy is being received, an offset detector can determine the frequency offset generated by the transceiver due to improper tuning. An automatic frequency control (AFC) system (100) is comprised of a tunable transceiver, an offset detector (103) and an AFC control processor (105) for utilizing information from the offset detector to reduce the inaccuracy in frequency by tuning the transceiver towards the received signal frequency. The AFC control processor (105) utilizes one of more threshold levels for defining a maximum correction threshold (311) based upon the desired maximum offset correction. These thresholds are used by the AFC control processor (105) to efficiently control the predetermined frequency range of the tunable transceiver (101) for most efficient operation.

公开(公告)号：FI980762A0

公开(公告)日：1998-04-02

申请号：FI980762

申请日：1998-04-02

Applicant: MOTOROLA INC

Inventor： BLANCO ALEJANDRO G ,  YOUNG RICHARD S ,  EMAMI SHAHRIAR ,  MILLER JIANPING

IPC: H03J7/04 ,  H03J

Abstract: A radio device requires a tunable transceiver such that the transceiver can be accurately set to a desired frequency. When a signal with known frequency accuracy is being received, an offset detector can determine the frequency offset generated by the transceiver due to improper tuning. An automatic frequency control (AFC) system (100) is comprised of a tunable transceiver, an offset detector (103) and an AFC control processor (105) for utilizing information from the offset detector to reduce the inaccuracy in frequency by tuning the transceiver towards the received signal frequency. The AFC control processor (105) utilizes one of more threshold levels for defining a maximum correction threshold (311) based upon the desired maximum offset correction. These thresholds are used by the AFC control processor (105) to efficiently control the predetermined frequency range of the tunable transceiver (101) for most efficient operation.

公开(公告)号：WO2006010026A3

公开(公告)日：2006-05-11

申请号：PCT/US2005024327

申请日：2005-07-07

Applicant: MOTOROLA INC ,  EMAMI SHAHRIAR ,  CORRAL CELESTINO A ,  RASOR GREGG E ,  SIBECAS SALVADOR ,  STRATIS GLAFKOS

Inventor： EMAMI SHAHRIAR ,  CORRAL CELESTINO A ,  RASOR GREGG E ,  SIBECAS SALVADOR ,  STRATIS GLAFKOS

IPC: H04W72/08 ,  H04B1/00 ,  H04B15/00 ,  H04Q7/20

CPC classification number: H04B17/309 ,  H04W72/085

Abstract: A technique is used in a wideband wireless communication system (100). In some embodiments available channels are determined (310) and one is selected (315) for assignment to each of a set of communication units based on a relative frequency path loss for each available channel. In some embodiments a communication unit is assigned (505) a channel selected from among available channels and a relative signal loss parameter of the communication unit, such as transmit power, is adjusted (510), based on a relative frequency path loss determined from the channel frequency of the assigned channel. In other embodiments, transmit information is split (705) into a plurality of data streams, each characterized by an associated relative signaling sensitivity, and each data stream is assigned (715) to one of a plurality of the transmit channels, wherein data streams are assigned channels of decreasing channel frequencies in order of decreasing associated relative signaling sensitivities of the data streams.

Abstract translation: 在宽带无线通信系统（100）中使用技术。 在一些实施例中，基于每个可用信道的相对频率路径损耗，确定（310）可用信道并且选择一个（315）用于分配给一组通信单元中的每一个。 在一些实施例中，通信单元被分配（505）从可用信道中选择的信道，并且基于从该信道确定的相对频率路径损耗来调整（510）通信单元的相对信号损失参数，诸如发射功率 指定频道的频道频率。 在其它实施例中，发射信息被分成（705）多个数据流，每个数据流由相关的相对信令灵敏度表征，并且每个数据流被分配（715）到多个发射信道中的一个，其中数据流是 按照降低数据流的相关信令灵敏度的顺序来分配降低信道频率的信道。

公开(公告)号：WO2005065122A3

公开(公告)日：2005-10-27

申请号：PCT/US2004040808

申请日：2004-12-07

Applicant: MOTOROLA INC ,  STRATIS GLAFKOS ,  EMRICK RUDY M ,  CORRAL CELESTINO A ,  EMAMI SHAHRIAR ,  SIBECAS SALVADOR

Inventor： STRATIS GLAFKOS ,  EMRICK RUDY M ,  CORRAL CELESTINO A ,  EMAMI SHAHRIAR ,  SIBECAS SALVADOR

IPC: H04B7/08 ,  H04B1/06 ,  H04B7/10 ,  H04Q7/20

CPC classification number: H04B7/0871 ,  H04B7/0874 ,  H04B7/10

Abstract: An antenna system (205) includes an antenna structure (215), a receiver (220), and an antenna system controller (225). The antenna structure includes an arrangement of antennas (237), a signal combiner (240), and a switching matrix (235). The arrangement of antennas is designed to have a set of antenna element separations that are optimized to provide lowest correlation coefficients of intercepted radio signals for a corresponding set of electromagnetic environment types that vary from a very low density scattering environment to a maximum density scattering environment. The antennas (230), (231), (232), (233), (234) in the antenna arrangement each include at least one element that has a common polarization. There is at least one antenna that is a dual polarized antenna. The antenna system selects an antenna element pair that corresponds to the environment type which it is operating and thereby receives a best combined signal.

Abstract translation: 天线系统（205）包括天线结构（215），接收机（220）和天线系统控制器（225）。 天线结构包括天线布置（237），信号组合器（240）和开关矩阵（235）。 天线的布置被设计成具有一组天线元件分离，其被优化以提供从非常低密度散射环境到最大密度散射环境变化的对应的一组电磁环境类型的截取的无线电信号的最低相关系数。 天线装置中的天线（230），（231），（232），（233），（234）各自包括具有共同极化的至少一个元件。 至少有一个天线是双极化天线。 天线系统选择对应于其正在操作的环境类型的天线元件对，从而接收最佳组合信号。

公开(公告)号：EP1700497A4

公开(公告)日：2009-09-09

申请号：EP04817974

申请日：2004-12-07

Applicant: MOTOROLA INC

Inventor： STRATIS GLAFKOS ,  EMRICK RUDY M ,  CORRAL CELESTINO A ,  EMAMI SHAHRIAR ,  SIBECAS SALVADOR

IPC: H04B7/08 ,  H04B1/06 ,  H04B7/10

CPC classification number: H04B7/0871 ,  H04B7/0874 ,  H04B7/10

Abstract: An antenna system (205) includes an antenna structure (215), a receiver (220), and an antenna system controller (225). The antenna structure includes an arrangement of antennas (237), a signal combiner (240), and a switching matrix (235). The arrangement of antennas is designed to have a set of antenna element separations that are optimized to provide lowest correlation coefficients of intercepted radio signals for a corresponding set of electromagnetic environment types that vary from a very low density scattering environment to a maximum density scattering environment. The antennas (230), (231), (232), (233), (234) in the antenna arrangement each include at least one element that has a common polarization. There is at least one antenna that is a dual polarized antenna. The antenna system selects an antenna element pair that corresponds to the environment type which it is operating and thereby receives a best combined signal.

公开(公告)号：EP1774658A4

公开(公告)日：2009-08-26

申请号：EP05769485

申请日：2005-07-07

Applicant: MOTOROLA INC

Inventor： EMAMI SHAHRIAR ,  CORRAL CELESTINO A ,  RASOR GREGG E ,  SIBECAS SALVADOR ,  STRATIS GLAFKOS

IPC: H04B1/00 ,  H04B15/00 ,  H04W72/08

CPC classification number: H04B17/309 ,  H04W72/085

Abstract: A technique is used in a wideband wireless communication system (100). In some embodiments available channels are determined (310) and one is selected (315) for assignment to each of a set of communication units based on a relative frequency path loss for each available channel. In some embodiments a communication unit is assigned (505) a channel selected from among available channels and a relative signal loss parameter of the communication unit, such as transmit power, is adjusted (510), based on a relative frequency path loss determined from the channel frequency of the assigned channel. In other embodiments, transmit information is split (705) into a plurality of data streams, each characterized by an associated relative signaling sensitivity, and each data stream is assigned (715) to one of a plurality of the transmit channels, wherein data streams are assigned channels of decreasing channel frequencies in order of decreasing associated relative signaling sensitivities of the data streams.

公开(公告)号：WO2005065122B1

公开(公告)日：2005-12-15

申请号：PCT/US2004040808

申请日：2004-12-07

Applicant: MOTOROLA INC ,  STRATIS GLAFKOS ,  EMRICK RUDY M ,  CORRAL CELESTINO A ,  EMAMI SHAHRIAR ,  SIBECAS SALVADOR

Inventor： STRATIS GLAFKOS ,  EMRICK RUDY M ,  CORRAL CELESTINO A ,  EMAMI SHAHRIAR ,  SIBECAS SALVADOR

IPC: H04B7/08 ,  H04B1/06 ,  H04B7/10 ,  H04Q7/20

CPC classification number: H04B7/0871 ,  H04B7/0874 ,  H04B7/10

Abstract: An antenna system (205) includes an antenna structure (215), a receiver (220), and an antenna system controller (225). The antenna structure includes an arrangement of antennas (237), a signal combiner (240), and a switching matrix (235). The arrangement of antennas is designed to have a set of antenna element separations that are optimized to provide lowest correlation coefficients of intercepted radio signals for a corresponding set of electromagnetic environment types that vary from a very low density scattering environment to a maximum density scattering environment. The antennas (230), (231), (232), (233), (234) in the antenna arrangement each include at least one element that has a common polarization. There is at least one antenna that is a dual polarized antenna. The antenna system selects an antenna element pair that corresponds to the environment type which it is operating and thereby receives a best combined signal.

Abstract translation: 天线系统（205）包括天线结构（215），接收器（220）和天线系统控制器（225）。 天线结构包括天线布置（237），信号组合器（240）和开关矩阵（235）。 天线布置被设计成具有一组天线元件间隔，所述天线元件间隔被优化以针对从非常低密度散射环境变化到最大密度散射环境的对应组的电磁环境类型提供截取无线电信号的最低相关系数。 天线装置中的天线（230），（231），（232），（233），（234）各自包括具有共同极化的至少一个元件。 至少有一个天线是双极化天线。 天线系统选择与其正在工作的环境类型相对应的天线元件对，从而接收最佳组合信号。

公开(公告)号：WO2005025074A2

公开(公告)日：2005-03-17

申请号：PCT/US2004025734

申请日：2004-07-25

Applicant: MOTOROLA INC ,  SIBECAS SALVADOR ,  CORRAL CELESTINO A ,  EMAMI SHAHRIAR ,  STRATIS GLAFKOS ,  RASOR GREGG

Inventor： SIBECAS SALVADOR ,  CORRAL CELESTINO A ,  EMAMI SHAHRIAR ,  STRATIS GLAFKOS ,  RASOR GREGG

IPC: H01Q21/24 ,  H04B20060101 ,  H04B7/10 ,  H04L27/26 ,  H04B

CPC classification number: H01Q21/24 ,  H04B7/10 ,  H04L27/2602 ,  H04L27/2614

Abstract: Communication systems include a transmitter that modulates a radio signal transmitted from two differently polarized antennas during a state time in which a wave state of the radio signal conveys information and is based on one or more polarization states selected from a constellation of polarization states comprising at least three polarization states. The communication system includes a receiver that intercepts the radio signal by two differently polarized antennas during the state time, and demodulates the signal. The polarization states may identify user devices or may quantify a portion of the information intended for a user device.

Abstract translation: 通信系统包括发射机，其在无线电信号的波状态传送信息并且基于从包括至少包括的偏振态的星座中选择的一个或多个极化状态的状态时间期间调制从两个不同极化的天线发射的无线电信号 三极化状态。 该通信系统包括一个接收器，用于在状态时间内通过两个不同极化的天线截取无线电信号，并解调该信号。 极化状态可以识别用户设备或者可以量化用于用户设备的信息的一部分。