Blind signal separation using spreading codes
    1.
    发明授权
    Blind signal separation using spreading codes 有权
    使用扩展码盲信号分离

    公开(公告)号:US07116271B2

    公开(公告)日:2006-10-03

    申请号:US11232610

    申请日:2005-09-22

    IPC分类号: G01S3/16 H04B7/216

    CPC分类号: H04L1/0618 H04B7/08 H04L1/065

    摘要: A communications device for separating source signals provided by M signal sources includes an antenna array comprising N antenna elements for receiving at least N different summations of the M source signals. A code despreader is connected to the N antenna elements for decoding the at least N different summations of the M source signals. Each one of the N different summations includes k codes for providing k different summations of the M source signals associated therewith. A blind signal separation processor forms a mixing matrix comprising at least kN different summations of the M source signals, and separates desired source signals from the mixing matrix. The mixing matrix has a rank equal up to kN.

    摘要翻译: 用于分离由M个信号源提供的源信号的通信设备包括一个包括N个天线元件的天线阵列,用于接收M个源信号的至少N个不同的求和。 码解扩器连接到N个天线元件,用于对M个源信号的至少N个不同求和进行解码。 N个不同求和中的每一个包括用于提供与其相关联的M个源信号的k个不同求和的k个代码。 盲信号分离处理器形成包含M个源信号的至少kN个不同求和的混合矩阵,并且从混合矩阵中分离所需的源信号。 混合矩阵具有等于kN的等级。

    Blind signal separation using correlated antenna elements
    2.
    发明授权
    Blind signal separation using correlated antenna elements 失效
    使用相关天线元件的盲信号分离

    公开(公告)号:US07414579B2

    公开(公告)日:2008-08-19

    申请号:US11232500

    申请日:2005-09-22

    IPC分类号: G01S3/16 H01Q3/00

    CPC分类号: H04B7/08

    摘要: A communications device for separating source signals provided by M signal sources includes an antenna array comprising N correlated antenna elements for receiving at least N different summations of the M source signals, with N and M being greater than 1. A receiver is connected to the antenna array for receiving the at least N different summations of the M source signals. A blind signal separation processor is connected to the receiver for forming a mixing matrix comprising up to the at least N different summations of the M source signals, and for separating desired source signals from the mixing matrix. The mixing matrix has a rank equal to at least N.

    摘要翻译: 用于分离由M个信号源提供的源信号的通信设备包括一个包括N个相关天线元件的天线阵列,用于接收M个源信号的至少N个不同相加,其中N和M大于1.接收机连接到天线 阵列,用于接收M个源信号的至少N个不同的求和。 盲信号分离处理器连接到接收器,用于形成混合矩阵,该混合矩阵包括多达至少N个不同的M个源信号的和,并且用于从混合矩阵中分离所需的源信号。 混合矩阵具有等于至少N的等级。

    System for providing high speed communications service in an airborne wireless cellular network
    3.
    发明授权
    System for providing high speed communications service in an airborne wireless cellular network 有权
    用于在机载无线蜂窝网络中提供高速通信服务的系统

    公开(公告)号:US08914022B2

    公开(公告)日:2014-12-16

    申请号:US12137995

    申请日:2008-06-12

    摘要: The present Broadband Link System supplements the existing Air-To-Ground Radio Frequency communications link with an additional, separate high speed Broadband Ground-To-Air Data Channel to provide additional data communication capacity for aircraft. This Broadband Ground-To-Air Data Channel is typically a uni-directional (Ground-To-Air) link directed via a focused beam to selected aircraft which are operational in the coverage area of the Broadband Ground-To-Air Data Channel. The routing of the various data transmissions on both the Air-To-Ground Radio Frequency communications link and the Broadband Ground-To-Air Data Channel are managed in a unified manner to maximize the utilization of the two transmission facilities.

    摘要翻译: 目前的宽带链路系统补充了现有的空对地无线电频率通信链路,并增加了一个独立的高速宽带地对空数据信道,为飞机提供了额外的数据通信能力。 这种宽带地对空数据信道通常是通过聚焦光束定向到在宽带地对空数据信道的覆盖区域中可操作的选定飞行器的单向(地对空)链路。 在空对地射频通信链路和宽带地对空数据信道上的各种数据传输的路由以统一的方式进行管理,以最大限度地利用两个传输设施。

    Methods in a wireless communication system for crime investigation, evidence generation and analysis
    4.
    发明授权
    Methods in a wireless communication system for crime investigation, evidence generation and analysis 有权
    无线通信系统中用于犯罪调查,证据生成和分析的方法

    公开(公告)号:US08892120B2

    公开(公告)日:2014-11-18

    申请号:US13324967

    申请日:2011-12-13

    IPC分类号: H04W64/00

    摘要: Crime investigation methods, evidence generation methods, and wireless communications system analysis methods are described. According to one aspect, a crime investigation method includes receiving information regarding a commission of a crime at a time period of interest and at a geographic location of interest, after the receiving and using wireless communications analysis equipment, measuring cellular signals in a geographic area which includes the geographic location of interest during the time period of interest, as a result of the measuring, generating measurement data which is indicative of a parameter of the cellular signals in the geographic area, using the measurement data, calculating a wireless coverage representation for the geographic area and which includes the geographic location of interest, accessing cellular communications records which are indicative of communications via the cellular signals in the geographic area, and using the cellular communications records and the wireless coverage representation, providing information regarding the crime.

    摘要翻译: 描述了犯罪调查方法,证据生成方法和无线通信系统分析方法。 根据一个方面,一种犯罪调查方法包括在接收和使用无线通信分析设备之后,在感兴趣的时间段和感兴趣的地理位置处接收关于犯罪佣金的信息,测量地理区域中的蜂窝信号 在感兴趣的时段期间包括感兴趣的地理位置,作为测量的结果,使用测量数据产生指示地理区域中的蜂窝信号的参数的测量数据,计算无线覆盖表示 地理区域,并且其包括感兴趣的地理位置,访问指示通过地理区域中的蜂窝信号的通信的蜂窝通信记录,以及使用蜂窝通信记录和无线覆盖表示,提供关于犯罪的信息。

    System for managing call handoffs between an aircraft and multiple cell sites
    5.
    发明授权
    System for managing call handoffs between an aircraft and multiple cell sites 有权
    用于管理飞机与多个小区站点之间的呼叫切换的系统

    公开(公告)号:US07107062B2

    公开(公告)日:2006-09-12

    申请号:US11241109

    申请日:2005-09-30

    IPC分类号: H04Q7/20

    摘要: The handoff management system maximizes the communications capacity available from terrestrial air-to-ground cellular networks, while also integrating communications capabilities from satellite air-to-ground cellular networks and terrestrial cellular communications networks. The communications capacity is maximized by dynamically allocating communications from the aircraft over multiple communications channels to multiple cells of the terrestrial air-to-ground cellular network, and to satellite air-to-ground cellular networks and terrestrial mobile networks. This approach effectively provides an increase in the call handling capacity available to any aircraft and permits a gradual transition of communications from one cell to the next cell, rather than requiring an abrupt handover of all traffic from the aircraft from one cell to the next cell.

    摘要翻译: 切换管理系统最大限度地提高从地面空对地蜂窝网络获得的通信能力,同时集成卫星空对地蜂窝网络和地面蜂窝通信网络的通信能力。 通过将通过多个通信信道的飞机的通信动态地分配给地面空对地蜂窝网络的多个小区以及卫星空对地蜂窝网络和地面移动网络,使通信容量最大化。 这种方法有效地提供了对任何飞机可用的呼叫处理能力的增加,并允许从一个小区到下一个小区的通信的逐渐转换,而不是要求所有业务从飞机从一个小区到下一个小区的突然切换。

    Air-to-ground cellular network for deck-to-deck call coverage

    公开(公告)号:US20060040660A1

    公开(公告)日:2006-02-23

    申请号:US11240975

    申请日:2005-09-30

    IPC分类号: H04Q7/20

    摘要: The air-to-ground cellular network for deck-to-deck call coverage provides call coverage to customers who are located in aircraft that are flying within the arrival/departure airspace of an airport by trifurcating the spatial coverage regions or volumes of space to solve the problems of inter-network interference while yielding air-to-ground cellular network coverage at any altitude. Three types of cells are considered: an Outer Cell, an Inner Cell and an Airport Cell. The Outer Cell is a macro cell covering a large volume of space and is one of many cells in the composite air-to-ground cellular network. The Inner Cell is created within an Outer Cell and has at its center an airport. The Airport Cell is a part of the Terrestrial Cellular Network (TCN), created by the present terrestrial cellular operators or service providers.

    Crime Investigation Methods, Evidence Generation Methods, And Wireless Communications System Analysis Methods
    7.
    发明申请
    Crime Investigation Methods, Evidence Generation Methods, And Wireless Communications System Analysis Methods 有权
    犯罪调查方法,证据产生方法和无线通信系统分析方法

    公开(公告)号:US20130150074A1

    公开(公告)日:2013-06-13

    申请号:US13324967

    申请日:2011-12-13

    IPC分类号: H04W64/00

    摘要: Crime investigation methods, evidence generation methods, and wireless communications system analysis methods are described. According to one aspect, a crime investigation method includes receiving information regarding a commission of a crime at a time period of interest and at a geographic location of interest, after the receiving and using wireless communications analysis equipment, measuring cellular signals in a geographic area which includes the geographic location of interest during the time period of interest, as a result of the measuring, generating measurement data which is indicative of a parameter of the cellular signals in the geographic area, using the measurement data, calculating a wireless coverage representation for the geographic area and which includes the geographic location of interest, accessing cellular communications records which are indicative of communications via the cellular signals in the geographic area, and using the cellular communications records and the wireless coverage representation, providing information regarding the crime.

    摘要翻译: 描述了犯罪调查方法,证据生成方法和无线通信系统分析方法。 根据一个方面,一种犯罪调查方法包括在接收和使用无线通信分析设备之后,在感兴趣的时间段和感兴趣的地理位置处接收关于犯罪佣金的信息,测量地理区域中的蜂窝信号 在感兴趣的时段期间包括感兴趣的地理位置,作为测量的结果,使用测量数据产生指示地理区域中的蜂窝信号的参数的测量数据,计算无线覆盖表示 地理区域,并且其包括感兴趣的地理位置,访问指示通过地理区域中的蜂窝信号的通信的蜂窝通信记录,以及使用蜂窝通信记录和无线覆盖表示,提供关于犯罪的信息。

    Spectrum sharing between an aircraft-based air-to-ground communication system and existing geostationary satellite services
    8.
    发明授权
    Spectrum sharing between an aircraft-based air-to-ground communication system and existing geostationary satellite services 有权
    基于飞机的空对地通信系统与现有的地球静止卫星业务之间的频谱共享

    公开(公告)号:US08442519B2

    公开(公告)日:2013-05-14

    申请号:US13172539

    申请日:2011-06-29

    IPC分类号: H04W4/00

    摘要: The present Spectrum Sharing System implements spectrum reuse between aircraft-based Air-To-Ground (ATG) communication systems and Geostationary Satellite Service systems. This is accomplished by managing the radio frequency transmissions in the volume of space in which the aircraft operates, with interference between the Spectrum Sharing System and the Geostationary Satellite Service system being reduced by implementing reversed uplink and downlink radio frequency paths in the common spectrum. The Spectrum Sharing System also avoids interfering with Geostationary Satellite Services' earth stations which are pointed towards the satellites' orbital arc by relying upon a combination of the earth stations' highly directive antenna patterns and the Spectrum Sharing System ground station antenna pattern, and to avoid interfering with satellites in their orbital arc by assuring that power levels radiated in that direction by the Spectrum Sharing System ground stations are below the level that would create interference.

    摘要翻译: 目前的频谱共享系统实现了基于飞机的空对地(ATG)通信系统和地球静止卫星系统之间的频谱重用。 这通过管理飞机运行的空间体积中的射频传输来实现,通过在公共频谱中实现反向的上行链路和下行链路射频路径,频谱共享系统和地球静止卫星服务系统之间的干扰被减少。 频谱共享系统还通过依靠地球站的高度指导性天线方向图和频谱共享系统地面站天线方向图来避免干扰指向卫星轨道弧的地球静止卫星地球站,并避免 通过确保频谱共享系统地面站在该方向辐射的功率电平低于会产生干扰的水平,从而干扰其轨道弧中的卫星。

    METHOD AND APPARATUS FOR PERFORMING BLIND SIGNAL SEPARATION IN AN OFDM MIMO SYSTEM
    9.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING BLIND SIGNAL SEPARATION IN AN OFDM MIMO SYSTEM 失效
    用于在OFDM MIMO系统中执行盲信号分离的方法和装置

    公开(公告)号:US20110164567A1

    公开(公告)日:2011-07-07

    申请号:US13016468

    申请日:2011-01-28

    申请人: Ivica Kostanic

    发明人: Ivica Kostanic

    IPC分类号: H04W4/00

    摘要: A method and apparatus for performing blind signal separation in an orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) system are disclosed. A transmitter generates a plurality of spatial streams of data and transmits the spatial streams via a plurality of transmit antennas. A receiver receives the transmitted spatial data streams with a plurality of receive antennas and generates a plurality of receive data streams. The receiver performs a discrete Fourier transform (DFT) on each of the receive data streams to generate a plurality of frequency domain data streams. The receiver then performs a blind signal separation on the frequency domain data streams to recover spatial streams transmitted by the transmitter. The blind signal separation may be performed by using an independent component analysis (ICA) in the complex domain. The blind signal separation may be performed individually for each OFDM subcarrier.

    摘要翻译: 公开了一种用于在正交频分复用(OFDM)多输入多输出(MIMO)系统中执行盲信号分离的方法和装置。 发射机产生多个空间数据流,并通过多个发射天线发送空间流。 接收机用多个接收天线接收所发送的空间数据流,并产生多个接收数据流。 接收机在每个接收数据流上执行离散付里叶变换(DFT)以产生多个频域数据流。 然后,接收机在频域数据流上执行盲信号分离,以恢复发射机发送的空间流。 可以通过使用复杂域中的独立分量分析(ICA)来执行盲信号分离。 可以针对每个OFDM子载波分别执行盲信号分离。