公开(公告)号：WO1997031428A1

公开(公告)日：1997-08-28

申请号：PCT/US1997001154

申请日：1997-01-27

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： LOCKHEED MARTIN CORPORATION ,  KINGSTON, Samuel, C. ,  GIALLORENZI, Thomas, R. ,  SYLVESTER, Randal, R. ,  MATOLAK, David, W. ,  SMITH, Patrick

IPC: H04B01/707

CPC classification number: H04B1/70755 ,  H04B1/70753 ,  H04B1/7103 ,  H04B2201/709709

Abstract: Disclosed are methods for acquiring a forward channel in a point-to-multipoint CDMA system. One method includes the steps of (a) despreading a received CDMA signal with a first pn code that is known to be present in the received CDMA signal and obtaining a first measure of received signal level; (b) despreading the received CDMA signal with a second pn code that is known not to be present in the received CDMA signal and obtaining a second measure of received signal level; and (c) synchronizing to a desired channel using a difference between the first and second signal levels. In this method the first step of despreading despreads a continuously transmitted side-channel, and the step of synchronizing synchronizes to the side-channel. Also, the step of obtaining a first measure of received signal level obtains a correlation peak, and the step of obtaining a second measure of received signal level obtains a correlation null. Preferably, the steps of despreading and obtaining are accomplished iteratively over a range of n first pn code phase states and over a range of n second pn code phase states.

Abstract translation: 公开了用于在点对多点CDMA系统中获取前向信道的方法。 一种方法包括以下步骤：（a）用已知存在于所接收的CDMA信号中的第一pn码解扩接收的CDMA信号，并获得接收信号电平的第一测量值; （b）用已知不存在于所接收的CDMA信号中的第二pn码解扩接收的CDMA信号，并获得接收信号电平的第二测量值; 和（c）使用第一和第二信号电平之间的差异来同步到期望的信道。 在该方法中，解扩的第一步骤对连续发送的侧信道进行解扩，并且同步步骤与侧信道同步。 此外，获得接收信号电平的第一测量的步骤获得相关峰值，并且获得接收信号电平的第二测量的步骤获得相关无效。 优选地，解扩和获得的步骤在n个第一pn码相位状态的范围内以及在n个第二pn码相位状态的范围上迭代地完成。

公开(公告)号：WO2014149679A1

公开(公告)日：2014-09-25

申请号：PCT/US2014/020278

申请日：2014-03-04

Applicant: ISCO INTERNATIONAL, LLC

Inventor： CORDONE, Sean S. ,  ABDELMONEM, Amr ,  GALEEV, Mikhail ,  WANG, Zhigang ,  WONG, Howard ,  SEOANE, Jorge

IPC: H04W24/02 ,  H04W28/08 ,  H04W52/04

CPC classification number: H04L5/0073 ,  H04B1/1036 ,  H04B1/709 ,  H04B1/71 ,  H04B1/7103 ,  H04B7/2634 ,  H04B15/00 ,  H04B17/00 ,  H04B17/21 ,  H04B17/26 ,  H04B17/327 ,  H04B17/345 ,  H04B17/373 ,  H04B2201/709709 ,  H04B2201/709745 ,  H04J11/0066 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/006 ,  H04L41/069 ,  H04W4/02 ,  H04W4/023 ,  H04W16/28 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/0236 ,  H04W28/04 ,  H04W40/16 ,  H04W52/04 ,  H04W52/243 ,  H04W64/00 ,  H04W64/006 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0486 ,  H04W72/082 ,  H04W72/085 ,  H04W72/1226 ,  H04W72/1231

Abstract: A system that incorporates the subject disclosure may include, for example, a method for measuring a power level in at least a portion of a plurality of resource blocks occurring in a radio frequency spectrum, wherein the measuring occurs for a plurality of time cycles to generate a plurality of power level measurements, calculating a baseline power level according to at least a portion of the plurality of power levels, determining a threshold from the baseline power level, and monitoring at least a portion of the plurality of resource blocks for signal interference according to the threshold. Other embodiments are disclosed.

Abstract translation: 结合本公开的系统可以包括例如用于测量在无线电频谱中发生的多个资源块的至少一部分中的功率电平的方法，其中测量发生多个时间周期以产生 多个功率电平测量，根据所述多个功率电平的至少一部分来计算基线功率电平，从所述基线功率电平确定阈值，以及监视所述多个资源块的至少一部分用于信号干扰， 达到门槛。 公开了其他实施例。

公开(公告)号：WO2014075212A1

公开(公告)日：2014-05-22

申请号：PCT/CN2012/084511

申请日：2012-11-13

Applicant: SHANGHAI MOBILEPEAK SEMICONDUCTOR CO., LTD.

Inventor： XU, Weiping ,  WAN, Feng ,  XU, Liang ,  LI, Yuan ,  ZOU, Qiuzhen

IPC: H04B15/00

CPC classification number: H04B1/7103 ,  H04B1/711 ,  H04B1/712

Abstract: Aspects of the present invention include methods, systems, and computer-readable medium for canceling interference in wireless communication. The method includes receiving wireless CDMA communication signals using one or more antennas at least from a first entity via a first communication channel and a second entity via a second communication channel, determining a set of known characteristics associated with the first entity, the first set of characteristics comprising a first signal strength, a first synchronization information, and an first channel identification information, and determining an aggregate signal matrix based on signals received from at least the first entity and the second entity. The method further includes determining a covariance matrix associated with the aggregate signal value, determining a reference signal matrix based on the set of known characteristics, calculating an interference matrix by subtracting the reference signal matrix from the covariance matrix, and removing the interference estimation from the communication signals.

Abstract translation: 本发明的方面包括用于消除无线通信中的干扰的方法，系统和计算机可读介质。 该方法包括使用至少来自第一实体的第一实体经由第一通信信道和第二实体经由第二通信信道接收无线CDMA通信信号，确定与第一实体相关联的一组已知特性，第一组 特征包括第一信号强度，第一同步信息和第一信道识别信息，以及基于从至少第一实体和第二实体接收的信号来确定聚合信号矩阵。 该方法还包括确定与聚合信号值相关联的协方差矩阵，基于已知特征集合确定参考信号矩阵，通过从协方差矩阵中减去参考信号矩阵来计算干扰矩阵，以及从所述协方差矩阵中去除干扰估计 通信信号。

公开(公告)号：WO2013185854A1

公开(公告)日：2013-12-19

申请号：PCT/EP2012/069242

申请日：2012-09-28

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  LINDOFF, Bengt ,  ANDGART, Niklas ,  NORDSTRÖM, Fredrik

Inventor： LINDOFF, Bengt ,  ANDGART, Niklas ,  NORDSTRÖM, Fredrik

IPC: H04J11/00 ,  H04B1/7103 ,  H04L27/26

CPC classification number: H04L5/0032 ,  H04B1/7103 ,  H04B2201/70702 ,  H04B2201/70707 ,  H04J11/0056 ,  H04L5/0007

Abstract: The present application relates to a method of a wireless device for interference cancellation (IC) in a cellular radio network system comprising a serving network node serving said wireless device. The method comprises using l a first IC method for at least partly removing a time aligned symbol of an interfering radio signal from at least a first symbol of a time slot received from the serving network node. The method also comprises using 2 a second IC method, different from the first IC method, for at least partly removing a non-time aligned symbol of an interfering radio signal from at least a second symbol of said time slot received from the serving network node.

Abstract translation: 本申请涉及一种在蜂窝无线电网络系统中用于干扰消除（IC）的无线设备的方法，其包括服务于所述无线设备的服务网络节点。 该方法包括使用第一IC方法，用于从从服务网络节点接收的时隙的至少第一符号至少部分地去除干扰无线电信号的时间对准符号。 该方法还包括使用与第一IC方法不同的第二IC方法，用于从从服务网络节点接收的所述时隙的至少第二符号至少部分地去除干扰无线电信号的非时间对准符号 。

公开(公告)号：WO2012146140A1

公开(公告)日：2012-11-01

申请号：PCT/CN2012/074172

申请日：2012-04-17

Applicant: 意法·爱立信半导体(北京)有限公司 ,  唐治汛 ,  庄亮

Inventor： 唐治汛 ,  庄亮

IPC: H04B1/7103

CPC classification number: H04L5/0073 ,  H04B1/7103 ,  H04J13/0003 ,  H04J13/004

公开(公告)号：WO2011003744A3

公开(公告)日：2011-05-26

申请号：PCT/EP2010058966

申请日：2010-06-24

Applicant: ERICSSON TELEFON AB L M ,  DRUGGE OSKAR ,  KAZMI MUHAMMAD

Inventor： DRUGGE OSKAR ,  KAZMI MUHAMMAD

IPC: H04B1/707

CPC classification number: H04J11/0086 ,  H04B1/7103 ,  H04B2201/70702 ,  H04B2201/709727 ,  H04J11/005 ,  H04L5/0021 ,  H04L5/0028 ,  H04L5/0091

Abstract: A radio receiver uses a first receiver type for receiving data and/or control information on one or more secondary carrier channel(s) if one or more common channel(s) are transmitted on the corresponding secondary carrier. Otherwise, the radio receiver uses a second receiver type for receiving data and/or control information on one or more secondary carrier channel(s).

Abstract translation: 如果在相应的辅助载波上发送一个或多个公共信道，则无线电接收机使用第一接收机类型来在一个或多个辅助载波信道上接收数据和/或控制信息。 否则，无线电接收机使用第二接收机类型来在一个或多个辅助载波信道上接收数据和/或控制信息。

公开(公告)号：WO2010144004A1

公开(公告)日：2010-12-16

申请号：PCT/SE2009/050710

申请日：2009-06-11

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) ,  WIGREN, Karl Torbjörn

Inventor： WIGREN, Karl Torbjörn

IPC: H04B1/707 ,  H04B17/00

CPC classification number: H04B1/712 ,  H04B1/7103 ,  H04B17/345 ,  H04B2201/709727

Abstract: A method for noise rise estimation in a wireless communication system comprises measuring (210) of received total wideband power a plurality of times and computing (212) of an estimate of a noise floor measure based on at least a number of the measured received total wideband powers. The method further comprises performing (214) of an interference whitening based on one of GRAKE, GRAKE+ and chip equalizer for a first user and determining (216) of a user equivalent total wideband power as an available total wideband power after the interference whitening for the first user. The estimate of a noise floor measure is compensated (218) for the interference whitening into a user equivalent noise floor measure and a noise rise measure for the first user is calculated (220) based at least on the user equivalent total wideband power and the user equivalent noise floor measure.

Abstract translation: 一种用于无线通信系统中的噪声上升估计的方法包括：多次测量（210）所接收的总宽带功率，并基于所测量的接收总宽带的至少一个数量，计算（212）噪声本底测量的估计值 权力。 该方法还包括基于第一用户的GRAKE，GRAKE +和码片均衡器之一执行（214）干扰白化，并且确定（216）用户等效总宽带功率作为对于所述干扰增白的可用总宽带功率 第一个用户 噪声本底测量的估计被补偿（218）用于干扰白化到用户等效噪声基底测量中，并且至少基于用户等效总宽带功率和用户来计算第一用户的噪声上升测量（220） 等效噪音测量。

公开(公告)号：WO2010135935A1

公开(公告)日：2010-12-02

申请号：PCT/CN2010/071769

申请日：2010-04-14

Applicant: 中兴通讯股份有限公司 ,  梁立宏

Inventor： 梁立宏

IPC: H04W24/00

CPC classification number: H04L27/0014 ,  H04B1/7103

Abstract: 本发明提供了一种频偏估计方法，包括：进行多小区信道估计，获得各小区的信道估计值；根据各小区的信道估计值，检测激活的训练序列偏移；获取若干个激活的训练序列偏移的频偏估计值；其中，获取一激活的训练序列偏移的频偏估计值包括：在接收的训练序列数据中去除其他激活的训练序列偏移的干扰，得到所述一激活的训练序列偏移对应的干净信号；使用一激活的训练序列偏移对应的干净信号，获取一激活的训练序列偏移的频偏估计值；根据若干个激活的训练序列偏移的频偏估计值得到最终的频偏估计值。本发明还提供一种频偏估计装置。本发明所述方法，通过去除 Midamble码之间的干扰使用干净信号进行频偏估计，提高了频偏估计精度。

公开(公告)号：WO2010090560A1

公开(公告)日：2010-08-12

申请号：PCT/SE2009/050115

申请日：2009-02-04

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  TIDESTAV, Claes ,  NYBERG, Henrik

Inventor： TIDESTAV, Claes ,  NYBERG, Henrik

IPC: H04B17/00 ,  H04W52/16 ,  H04B1/707

CPC classification number: H04W52/16 ,  H04B1/7103 ,  H04B17/318

Abstract: The present invention relates to a method and apparatus for estimating a received signal power of a first transmission channel at a receiving node in a communications system wherein a received signal comprises information transmitted by a transmitting node over at least two transmission channels. The received signal power of a second of the at least two transmission channels is measured, and together with an estimate of the relationship between the transmission power of the second transmission channel and the transmission power of the first transmission channel; the measurement of the received signal power is used in estimating the received signal power of the first transmission channel.

Abstract translation: 本发明涉及一种用于估计通信系统中的接收节点处的第一传输信道的接收信号功率的方法和装置，其中所接收的信号包括由发射节点通过至少两个传输信道发射的信息。 测量所述至少两个传输信道中的第二个传输信道的接收信号功率，以及第二传输信道的发射功率与第一传输信道的发射功率之间的关系的估计; 接收信号功率的测量用于估计第一传输信道的接收信号功率。

公开(公告)号：WO2010056850A2

公开(公告)日：2010-05-20

申请号：PCT/US2009064191

申请日：2009-11-12

Applicant: ISCO INTERNATIONAL INC ,  ABDELMONEM AMR ,  CORDONE SEAN S

Inventor： ABDELMONEM AMR ,  CORDONE SEAN S

IPC: H04W28/16

CPC classification number: H04B1/7103 ,  H04B1/1036 ,  H04B1/707 ,  H04B1/7093 ,  H04B17/318 ,  H04B17/345 ,  H04B2001/1072 ,  H04J11/0023 ,  H04L27/0006 ,  H04L27/2601 ,  H04L43/16 ,  H04W24/08 ,  H04W48/16 ,  H04W72/02 ,  H04W72/0453 ,  H04W72/085 ,  H04W88/06 ,  H04W88/10

Abstract: A system and method provides adaptive digital front end control of an incoming radio frequency (RF) signal to identify RF characteristics in that signal, such as interference or desired data signals and adaptively control digital filter elements to selectively tune only portions of the RF signal to produce a filtered output signal, on a per cycle basis, prior to communicating the RF signal to an underlying wireless communication device, such as a base station in cellular network, cellular phone, wireless router base station, cognitive radio, or other wireless communication device. Each digital filter element may be tuned in frequency and bandwidth of operation and collectively the elements form an adaptive filter stage with elements configurable into both bandpass and bandstop filters for cascaded operation.

Abstract translation: 系统和方法提供对输入射频（RF）信号的自适应数字前端控制，以识别该信号中的RF特性，例如干扰或期望的数据信号，并自适应地控制数字滤波器元件以仅选择性地调谐RF信号的部分 在将RF信号传送到诸如蜂窝网络中的基站，蜂窝电话，无线路由器基站，认知无线电或其他无线通信设备之类的基础无线通信设备之前，在每个周期的基础上产生滤波的输出信号 。 每个数字滤波器元件可以在操作的频率和带宽中调谐，并且这些元件共同形成自适应滤波器级，其中元件可配置成用于级联操作的带通和带阻滤波器。