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1. 发明授权

US06904550B2 Velocity enhancement for OFDM systems 有权
标题翻译： OFDM系统的速度增强
公开(公告)号：US06904550B2
公开(公告)日：2005-06-07
申请号：US10331692
申请日：2002-12-30
申请人： Salvador Sibecas , Glafkos Stratis , Celestino Corral , Shahriar Enami , Gregg Rasor , Robert Gorday
发明人： Salvador Sibecas , Glafkos Stratis , Celestino Corral , Shahriar Enami , Gregg Rasor , Robert Gorday
IPC分类号： H04L27/26 , G01R31/28 , H04J3/12 , H04L7/00
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/0232 , H04L27/34
摘要： An orthogonal frequency division multiplexing (OFDM) transmitter method, consistent with certain embodiments of the present invention arranges OFDM data symbols representing data bits for transmission in a packet. A prescribed pattern of OFDM data symbols are removed (212) and replaced (216) with pilot symbols. The packet is then transmitted (220) to an OFDM receiver that receives the packet (224) and determines a channel correction factor from the pilot pattern. The receiver then estimates a plurality of channel correction factors, one for each of the plurality of OFDM symbols representing data (228) and uses these correction factors to correct the OFDM symbols representing data (232). Arbitrary data are then inserted in place of the pilot symbols (236). The OFDM symbols representing data along with the arbitrary data are then decoded using an error correction decoder that corrects the errors induced by substitution of the pilot symbols for data symbols (240).
摘要翻译：与本发明的某些实施例一致的正交频分复用（OFDM）发射机方法将表示用于传输的数据比特的OFDM数据符号排列在分组中。用导频符号去除（212）并且替换（216）OFDM数据符号的规定模式。然后将分组发送（220）到接收分组（224）并从导频模式确定信道校正因子的OFDM接收机。接收机然后估计多个信道校正因子，一个用于代表数据（228）的多个OFDM符号中的每一个，并且使用这些校正因子来校正表示数据（232）的OFDM符号。然后插入任意数据代替导频符号（236）。然后使用错误校正解码器对表示数据以及任意数据的OFDM符号进行解码，纠错解码器校正由数据符号（240）导频符号的替换引起的错误。

2. 发明申请

US20090167756A1 METHOD AND APPARATUS FOR COMPUTATION OF WIRELESS SIGNAL DIFFRACTION IN A THREE-DIMENSIONAL SPACE 审中-公开
标题翻译：用于计算三维空间中无线信号差分的方法和装置
公开(公告)号：US20090167756A1
公开(公告)日：2009-07-02
申请号：US11967426
申请日：2007-12-31
申请人： Alexander Bijamov , Celestino Corral , Salvador Sibecas , Glafkos Stratis
发明人： Alexander Bijamov , Celestino Corral , Salvador Sibecas , Glafkos Stratis
IPC分类号： G06T1/00
CPC分类号： H04B17/3911
摘要： A method (20 or 500) and system (200) for method for computing wireless signal diffraction in a three-dimensional space can include the steps of selecting at least a source point, finding (19) sinkpoints that fail to have a line-of-sight path to the source point and storing the sinkpoints found, placing (21) diffraction points on all edges of a three-dimensional geometry, and building (24) a visibility matrix based on weighted paths for all source points and all sink points. The method can further include applying (25) a path finding algorithm on the visibility matrix for each sink point to all source points and storing store optimal paths for each source point to all sink points if they exist. The method can further include determining (23) if a last source point is selected before building the visibility matrix.
摘要翻译：用于在三维空间中计算无线信号衍射的方法的方法（20或500）和系统（200）可以包括以下步骤：至少选择源点，找到（19）不具有线到源点的路径和存储所找到的接收点，将（21）衍射点放置在三维几何的所有边缘上，并基于所有源点和所有接收点的加权路径构建（24）可见性矩阵。该方法可以进一步包括将每个宿点的可见性矩阵上的路径查找算法应用于所有源点，并且如果存在，则将存储每个源点的最佳路径存储到所有宿点。该方法还可以包括确定（23）如果在构建可见性矩阵之前选择最后一个源点。

3. 发明申请

US20050143037A1 Adaptive diversity antenna system 有权
标题翻译：自适应分集天线系统
公开(公告)号：US20050143037A1
公开(公告)日：2005-06-30
申请号：US10960808
申请日：2004-10-07
申请人： Glafkos Stratis , Rudy Emrick , Celestino Corral , Shahriar Emami , Salvador Sibecas
发明人： Glafkos Stratis , Rudy Emrick , Celestino Corral , Shahriar Emami , Salvador Sibecas
IPC分类号： H04B7/08 , H04B1/06 , H04B7/10
CPC分类号： H04B7/0871 , H04B7/0874 , H04B7/10
摘要： 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.
摘要翻译：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。

4. 发明申请

US20090144028A1 METHOD AND APPARATUS OF COMBINING MIXED RESOLUTION DATABASES AND MIXED RADIO FREQUENCY PROPAGATION TECHNIQUES 审中-公开
标题翻译：组合分辨率数据库和混合无线电频率传播技术的方法与装置
公开(公告)号：US20090144028A1
公开(公告)日：2009-06-04
申请号：US11948686
申请日：2007-11-30
申请人： CELESTINO CORRAL , ALEXANDER BIJAMOV , SALVADOR SIBECAS , GLAFKOS STRATIS
发明人： CELESTINO CORRAL , ALEXANDER BIJAMOV , SALVADOR SIBECAS , GLAFKOS STRATIS
IPC分类号： G06G7/62 , G06F17/50
CPC分类号： H04B17/3912
摘要： A method (10 or 500) and system (200) for simulating and improving accuracy of empirical propagation models for radio frequency coverage can include a display (210) and a processor (202) coupled to the display. The processor can be operable to input (502 and 504) low-resolution data and high-resolution data, select (506) an area of interest being simulated for empirical propagation models, and classify (508) receivers as belonging to a predetermined type of object. If a receiver in the area of interest is a low resolution object, then normal losses can be applied (510). If a receiver in the area of interest is a high resolution object, then losses specific to the high resolution object can be applied (512). If a receiver is classified as being inside a building, then the processor can further compute (516) a median power for a location of the receiver and add in-building penetration losses.
摘要翻译：用于模拟和提高用于射频覆盖的经验传播模型的精度的方法（10或500）和系统（200）可以包括耦合到显示器的显示器（210）和处理器（202）。处理器可操作以输入（502和504）低分辨率数据和高分辨率数据，选择（506）对于经验传播模型进行模拟的感兴趣区域，并将（508）接收机分类为属于预定类型目的。如果感兴趣区域中的接收机是低分辨率对象，则可以应用正常损耗（510）。如果感兴趣区域中的接收机是高分辨率对象，则可应用高分辨率对象特有的损失（512）。如果接收机被分类为建筑物内部，则处理器可以进一步计算（516）接收机位置的中间功率并增加建筑物内穿透损耗。

5. 发明授权

US07933343B2 Enhanced OFDM by use of alternating polarization states 有权
标题翻译：通过使用交替极化状态来增强OFDM
公开(公告)号：US07933343B2
公开(公告)日：2011-04-26
申请号：US10331696
申请日：2002-12-30
申请人： Shahriar Emami , Celestino Corral , Gregg Rasor , Salvador Sibecas , Glafkos Stratis
发明人： Shahriar Emami , Celestino Corral , Gregg Rasor , Salvador Sibecas , Glafkos Stratis
IPC分类号： H04K1/10
CPC分类号： H04L27/2614 , H01Q21/24 , H04B7/10 , H04L27/2602
摘要： An Orthogonal Frequency Division Multiplexer (OFDM) transmitter and receiver apparatus consistent with certain embodiments of the present invention receives data to be transmitted and maps (204) a first portion of the data to a first polarization state and a second portion of the data to a second polarization state. A first transmitter (216) transmits the first portion of the data as a set of first OFDM subcarriers using an antenna (230) exhibiting a first polarization. A second transmitter (234) transmits the second portion of the data as a set of second OFDM subcarriers using an antenna (240) exhibiting a second polarization, wherein the first polarization is orthogonal to the second polarization. A receiver apparatus uses a first antenna (302) exhibiting the first polarization and a second antenna (306) exhibiting the second polarization. A first OFDM receiver (310) receives a first set of polarized OFDM subcarriers from the first antenna (302) while a second OFDM receiver (324) receives a second set of polarized OFDM subcarriers from the second antenna (306). A decoder (330) decodes the first and second sets of OFDM subcarriers and combines them into a stream of data.
摘要翻译：与本发明的某些实施例一致的正交频分复用器（OFDM）发射机和接收机设备接收要发送的数据，并将数据的第一部分（204）映射（204）到第一极化状态，并将数据的第二部分映射（204）到第二极化状态。第一发射机（216）使用表现出第一极化的天线（230）来发送数据的第一部分作为一组第一OFDM子载波。第二发射机（234）使用表现出第二极化的天线（240）将数据的第二部分作为第二OFDM子载波的集合发送，其中第一极化与第二极化正交。接收机装置使用表现出第一极化的第一天线（302）和呈现第二极化的第二天线（306）。第一OFDM接收器（310）从第一天线（302）接收第一组偏振OFDM子载波，而第二OFDM接收器（324）从第二天线（306）接收第二组偏振OFDM子载波。解码器（330）解码第一和第二组OFDM子载波，并将它们组合成数据流。

6. 发明申请

US20060009231A1 Method and communication unit for use in a wideband wireless communications system 有权
标题翻译：用于宽带无线通信系统的方法和通信单元
公开(公告)号：US20060009231A1
公开(公告)日：2006-01-12
申请号：US10886479
申请日：2004-07-07
申请人： Shahrian Emami , Celestino Corral , Gregg Rasor , Salvador Sibecas , Glafkos Stratis
发明人： Shahrian Emami , Celestino Corral , Gregg Rasor , Salvador Sibecas , Glafkos Stratis
IPC分类号： H04B1/00 , H04B15/00 , H04Q7/20
CPC分类号： H04B17/309 , H04W72/085
摘要： 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.
摘要翻译：在宽带无线通信系统（100）中使用技术。在一些实施例中，确定可用信道（310），并且基于每个可用信道的相对频率路径损耗来选择（315）用于分配给一组通信单元中的每一个的可用信道。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，并且基于从所述信道确定的相对频率路径损耗来调整（510）所述通信单元的相对信号丢失参数（例如发射功率）（510）分配频道的频道频率。在其他实施例中，发送信息被分割（705）到多个数据流中，每个数据流的特征在于相关联的相对信令灵敏度，并且每个数据流被分配（715）到多个发送信道之一，其中数据流是分配的信道频率减少的顺序是减少数据流的相关的相对信令灵敏度。

7. 发明申请

US20090144311A1 METHOD AND APPARATUS FOR DEVELOPING HIGH RESOLUTION DATABASES FROM LOW RESOLUTION DATABASES 审中-公开
标题翻译：用于从低分辨率数据库开发高分辨率数据库的方法和装置
公开(公告)号：US20090144311A1
公开(公告)日：2009-06-04
申请号：US11948714
申请日：2007-11-30
申请人： GLAFKOS STRATIS , ALEXANDER BIJAMOV , CELESTINO CORRAL , SALVADOR SIBECAS , BRIAN SWENEY
发明人： GLAFKOS STRATIS , ALEXANDER BIJAMOV , CELESTINO CORRAL , SALVADOR SIBECAS , BRIAN SWENEY
IPC分类号： G06F17/30
CPC分类号： G06F16/58 , G06F16/29
摘要： A method (10) and system (200) for generating a high resolution database from low resolution databases introduces (12) a low resolution database and selects a desired area, classifies (16) portions of the desired area and geographically locates and generates (20) a new desired area based on a higher resolution setting than is found on the low resolution database. The method can further incorporate (22) the portions of the desired area that were geographically located in the new desired area and replaces (24) the portions of the desired area that were geographically located with a higher resolution object. The method can define (14) the low resolution database and identify (18) the higher resolution setting. The method can also save (26) a composite resolution database. The method can use an aerial image and its pixilation to create a higher resolution image by interpolation to form a higher resolution image.
摘要翻译：用于从低分辨率数据库生成高分辨率数据库的方法（10）和系统（200）引入（12）低分辨率数据库并选择所需区域，对（16）所需区域的部分进行分类并在地理上定位并产生（20 ）基于比在低分辨率数据库上找到的更高分辨率设置的新的期望区域。该方法可以进一步并入（22）在地理上位于新的期望区域内的期望区域的部分，并且用（较高分辨率物体）代替（24）位于地理位置的所需区域的部分。该方法可以定义（14）低分辨率数据库并识别（18）较高分辨率设置。该方法还可以保存（26）复合分辨率数据库。该方法可以使用空中图像及其像素，通过插值创建更高分辨率的图像，形成较高分辨率的图像。

8. 发明申请

US20090144037A1 METHOD AND APPARATUS FOR ENHANCING THE ACCURACY AND SPEED OF A RAY LAUNCHING SIMULATION TOOL 有权
标题翻译：提高射程模拟工具精度和速度的方法和装置
公开(公告)号：US20090144037A1
公开(公告)日：2009-06-04
申请号：US11948636
申请日：2007-11-30
申请人： Salvador Sibecas , Alexander Bijamov , Celestino Corral , Glafkos Stratis
发明人： Salvador Sibecas , Alexander Bijamov , Celestino Corral , Glafkos Stratis
IPC分类号： G06G7/48
CPC分类号： G06F17/5009 , G06F2217/10 , G06F2217/78
摘要： A method (600) and simulation tool (200) having enhanced accuracy and speed for simulation using ray launching in a mixed environment (20) by using adaptive ray expansion mechanisms can include a memory (204) coupled to a processor (202). The processor can select (602) a target area within the mixed environment and modify (604) the propagation properties of the adaptive ray expansion mechanisms according to characteristics classified for the target area. The processor can further classify characteristics for the target area by transmitting and reflecting rays for indoor building regions and for outdoor building regions. The number of bounces or a power level threshold assigned to a transmitted ray is a function of the environment where it propagates. The simulation tool can determine the target area or a region of interest by using a global positioning service device (230) externally attached to a device performing functions of the simulation tool.
摘要翻译：具有增强的精度和速度的方法（600）和模拟工具（200）可以包括耦合到处理器（202）的存储器（204）的模拟，其利用自适应射线扩展机构在混合环境（20）中使用射线发射进行模拟。处理器可以选择（602）混合环境内的目标区域，并根据针对目标区域分类的特征修改（604）自适应射线扩展机构的传播特性。处理器可以通过传输和反射室内建筑区域和室外建筑区域的射线来进一步对目标区域的特征进行分类。分配给发射光线的反弹次数或功率电平阈值是其传播的环境的函数。仿真工具可以通过使用外部连接到执行仿真工具的功能的设备的全球定位服务设备（230）来确定目标区域或感兴趣区域。

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