公开(公告)号：US20060133530A1

公开(公告)日：2006-06-22

申请号：US11254358

申请日：2005-10-20

Applicant: Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Olesen ,  Aykut Bultan ,  Fatih Ozluturk

Inventor： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Olesen ,  Aykut Bultan ,  Fatih Ozluturk

IPC: H04L1/02

CPC classification number: H04L1/0606 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/04 ,  H04L5/0007 ,  H04L25/0248 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2647

Abstract: A method and apparatus for combining space-frequency block coding (SFBC), spatial multiplexing (SM) and beamforming in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. The system includes a transmitter with a plurality of transmit antennas and a receiver with a plurality of receive antennas. The transmitter generates at least one data stream and a plurality of spatial streams. The number of generated spatial streams is based on the number of the transmit antennas and the number of the receive antennas. The transmitter determines a transmission scheme in accordance with at least one of SFBC, SM and beam forming. The transmitter transmits data in the data stream to the receiver based on the selected transmission scheme.

Abstract translation: 一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC），空间复用（SM）和波束形成的方法和装置。 该系统包括具有多个发射天线的发射机和具有多个接收天线的接收机。 发射机产生至少一个数据流和多个空间流。 所生成的空间流的数量基于发射天线的数量和接收天线的数量。 发射机根据SFBC，SM和波束形成中的至少一个确定传输方案。 发射机根据所选择的传输方案向接收机发送数据流中的数据。

公开(公告)号：US20050277442A1

公开(公告)日：2005-12-15

申请号：US11204883

申请日：2005-08-16

Applicant: David Mesecher ,  Fatih Ozluturk

Inventor： David Mesecher ,  Fatih Ozluturk

IPC: H01Q1/24 ,  H01Q3/26 ,  H04B1/12 ,  H04B1/38 ,  H04B7/08

CPC classification number: H04B1/126 ,  H01Q1/246 ,  H01Q3/2629

Abstract: An improved base station which cancels the effects of known fixed interference sources produces a signal substantially free from the interference sources thereby increasing total channel capacity. The adaptive interference canceller base station includes a main antenna for receiving signals from other communication stations and at least one directional antenna directed toward an interference source. The main and directional antennas are coupled together such that an output signal substantially free from the interference is generated.

Abstract translation: 一种改进的基站，其消除已知固定干扰源的影响并且产生基本上不受干扰源的信号，从而增加总信道容量。 自适应干扰消除器基站包括用于从其他通信站接收信号的主天线和指向干扰源的至少一个定向天线。 主和定向天线耦合在一起，使得产生基本上不受干扰的输出信号。

公开(公告)号：US06714769B2

公开(公告)日：2004-03-30

申请号：US10328663

申请日：2002-12-23

Applicant: Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

Inventor： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

IPC: H03C702

CPC classification number: H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

Abstract: Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink wherein priority is given to the antenna receiving a better quality signal. Measurements are taken during each time slot to determine the weighting to be given to the antenna with the better quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal the techniques described herein may be used individual, and in some cases are combined to receive additional benefits in efficiency.

Abstract translation: 用于通过公共射频（RF）链将信号从多个天线向下传输到基带的方法和装置。 天线选择对于上行链路和下行链路具有更大的灵活性和适用性，其中优先给予接收更好质量信号的天线。 在每个时隙期间进行测量，以确定要以更好的质量信号给予天线的加权。 提供技术和装置以在从时隙到单个符号的间隔范围内进行测量，例如，选择最佳信号，本文所描述的技术可以被单独使用，并且在一些情况下被组合以在效率上接收额外的益处。

公开(公告)号：US08130730B2

公开(公告)日：2012-03-06

申请号：US12499918

申请日：2009-07-09

Applicant: Nadir Sezgin ,  Fatih Ozluturk

Inventor： Nadir Sezgin ,  Fatih Ozluturk

IPC: H04B7/216

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70752 ,  H04B1/7093 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04L27/2053 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

Abstract: A time division duplex (TDD) user equipment (UE) is configured to synchronize to a TDD base station. The UE includes an antenna, a primary synchronization code matched filter, a first plurality of secondary synchronization code matched filters, a second plurality of secondary synchronization code matched filters, and a processor in communication with the first and second plurality of secondary synchronization code matched filters. The first plurality of secondary synchronization code matched filters determines secondary synchronization codes sent on a first carrier and the second plurality of secondary synchronization code matched filters determines secondary synchronization codes sent on a second carrier. The processor is configured to determine a code group assignment and selected timeslot based upon an analysis of the secondary synchronization codes sent on the first and second carriers.

Abstract translation: 时分双工（TDD）用户设备（UE）被配置为与TDD基站同步。 UE包括天线，主同步码匹配滤波器，第一多个次同步码匹配滤波器，第二多个次同步码匹配滤波器，以及与第一和第二多个次同步码匹配滤波器通信的处理器 。 第一多个次同步码匹配滤波器确定在第一载波上发送的次同步码，并且第二多个次同步码匹配滤波器确定在第二载波上发送的辅同步码。 处理器被配置为基于在第一和第二载波上发送的辅助同步码的分析来确定码组分配和选择的时隙。

公开(公告)号：US07660561B2

公开(公告)日：2010-02-09

申请号：US10769690

申请日：2004-01-22

Applicant: Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

Inventor： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

IPC: H03C7/02

CPC classification number: H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

Abstract: Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink is obtained by giving priority to the antenna receiving a better/best quality signal. Measurements are taken by at least a channel estimator during each time slot to determine the weighting to be given to the antenna with the better/best quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal. The techniques described herein may be used individually, and in some cases are combined to receive additional benefits in efficiency. For example, one or more of recent and/or current channel estimation, history, optimization may be employed, in addition to channel estimation, to determine signal quality.

Abstract translation: 用于通过公共射频（RF）链将信号从多个天线向下传输到基带的方法和装置。 通过优先考虑接收更好/最佳质量信号的天线，获得对上行链路和下行链路具有更大灵活性和适用性的天线选择。 在每个时隙期间由至少一个信道估计器进行测量，以确定将以更好/最佳质量信号给予天线的加权。 提供了技术和装置，以在从时隙到单个符号的间隔范围内进行测量，例如选择最佳信号。 本文描述的技术可以单独使用，并且在一些情况下被组合以获得效率的附加益处。 例如，除了信道估计之外，可以采用近期和/或当前信道估计，历史，优化中的一个或多个来确定信号质量。

公开(公告)号：US07599668B2

公开(公告)日：2009-10-06

申请号：US11202570

申请日：2005-08-12

Applicant: Fatih Ozluturk ,  Philip J. Pietraski

Inventor： Fatih Ozluturk ,  Philip J. Pietraski

IPC: H04B1/02

CPC classification number: H04B7/10 ,  H01Q21/29 ,  H01Q25/00 ,  H04B7/04 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/066 ,  H04B7/0691 ,  H04B7/0697

Abstract: The present invention is related to a method and apparatus for reducing antenna correlation between multiple antennas. A transmitter generates at least two beams with a plurality of antennas. The generated beams are spatially separated to point away each other. Therefore, the transmitted signals travel through different channel conditions and arrive at a receiver mutually uncorrelated. The beams may be generated by antennas having different antenna pattern, or by an array antenna. The beams may be polarized differently. The schemes may be implemented on a subcarrier basis in an orthogonal frequency division multiplexing (OFDM) system. Trellis coded mapping may be utilized for adjacent symbols to be mapped to antennas with low correlation.

Abstract translation: 本发明涉及减少多个天线之间的天线相关性的方法和装置。 发射机产生具有多个天线的至少两个波束。 产生的光束在空间上分离以彼此远离。 因此，所发送的信号通过不同的信道条件传播并且到达接收机相互不相关。 波束可以由具有不同天线图案的天线或阵列天线产生。 梁可以以不同的方式极化。 这些方案可以在正交频分复用（OFDM）系统中以子载波为基础来实现。 网格编码映射可以用于相邻符号以被映射到具有低相关性的天线。

公开(公告)号：US07519395B2

公开(公告)日：2009-04-14

申请号：US11204883

申请日：2005-08-16

Applicant: David K. Mesecher ,  Fatih Ozluturk

Inventor： David K. Mesecher ,  Fatih Ozluturk

IPC: H04B1/38

CPC classification number: H04B1/126 ,  H01Q1/246 ,  H01Q3/2629

Abstract: An improved base station which cancels the effects of known fixed interference sources produces a signal substantially free from the interference sources thereby increasing total channel capacity. The adaptive interference canceller base station includes a main antenna for receiving signals from other communication stations and at least one directional antenna directed toward an interference source. The main and directional antennas are coupled together such that an output signal substantially free from the interference is generated.

Abstract translation: 一种改进的基站，其消除已知固定干扰源的影响并且产生基本上不受干扰源的信号，从而增加总信道容量。 自适应干扰消除器基站包括用于从其他通信站接收信号的主天线和指向干扰源的至少一个定向天线。 主和定向天线耦合在一起，使得产生基本上不受干扰的输出信号。

公开(公告)号：US07509138B2

公开(公告)日：2009-03-24

申请号：US10848185

申请日：2004-05-18

Applicant: Sung-Hyuk Shin ,  Ariela Zeira ,  Fatih Ozluturk ,  Donald M. Grieco

Inventor： Sung-Hyuk Shin ,  Ariela Zeira ,  Fatih Ozluturk ,  Donald M. Grieco

IPC: H04B7/00

CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/24 ,  H04W52/287 ,  H04W52/44

Abstract: A transmitting station performs closed loop power control prior to a transmission pause. A closed loop transmission power level prior to the pause is determined. A reference signal is received and a received power level of the reference signal prior to and during the transmission pause is determined. The measured reference signal received power levels are compared to a transmit power level of the reference signals to produce a pathloss estimate of the reference signal prior to and during the transmission pause. A new transmit power level is determined by adjusting the closed loop transmission power level by a change between the prior to and during pathloss estimates. A transmission power level of the transmitting station is set to the determined new transmit power level. A communication is transmitted at the set transmission power level.

Abstract translation: 发送台在发送暂停之前执行闭环功率控制。 确定暂停之前的闭环发射功率电平。 接收参考信号，并且确定在传输暂停之前和期间的参考信号的接收功率电平。 将测量的参考信号接收功率电平与参考信号的发射功率电平进行比较，以在传输暂停之前和期间产生参考信号的路径损耗估计。 通过在路径损耗估计之前和之后的变化来调整闭环发射功率电平来确定新的发射功率电平。 将发送站的发送功率电平设定为所确定的新的发送功率电平。 以设定的发送功率电平发送通信。

公开(公告)号：US07437177B2

公开(公告)日：2008-10-14

申请号：US12075945

申请日：2008-03-14

Applicant: Fatih Ozluturk ,  Gary R. Lomp

Inventor： Fatih Ozluturk ,  Gary R. Lomp

IPC: H04B7/216 ,  H04B1/00 ,  H04B7/00

CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

Abstract: A base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected.

Abstract translation: 在建立通信信道期间用于控制发送功率的基站在初始功率提升期间利用短码的接收。 短代码是用于基站检测的序列，其具有比常规访问码短得多的周期。 斜坡上升从低于基站检测所需功率电平的功率电平开始。 短码的功率快速增加，直到基站检测到信号。 一旦基站检测到短码，它就会发送一个指示已经检测到短码。

公开(公告)号：US20080020725A1

公开(公告)日：2008-01-24

申请号：US11904063

申请日：2007-09-25

Applicant: Alpaslan Demir ,  Leonid Kazakevich ,  Fatih Ozluturk ,  Geetha Narayan

Inventor： Alpaslan Demir ,  Leonid Kazakevich ,  Fatih Ozluturk ,  Geetha Narayan

IPC: H04B7/00

CPC classification number: H04B1/30 ,  H03D3/008

Abstract: A digital baseband (DBB) receiver for receiving and processing a wireless communication signal. The DBB receiver includes at least one low noise amplifier (LNA), at least one demodulator, a direct current (DC) discharge circuit and an LNA control circuit. The LNA selectively amplifies the communication signal. The demodulator outputs analog real and imaginary signal components on real and imaginary signal paths, respectively, in response to receiving the communication signal from the LNA. The DC discharge circuit selectively discharges DC accumulating on at least one of the real and imaginary signal paths. The LNA control circuit turns the LNA on or off.

Abstract translation: 一种用于接收和处理无线通信信号的数字基带（DBB）接收机。 DBB接收器包括至少一个低噪声放大器（LNA），至少一个解调器，直流（DC）放电电路和LNA控制电路。 LNA选择性地放大通信信号。 解调器响应于接收到来自LNA的通信信号，分别在实信号路径和虚信号路径上输出模拟实信号和虚信号分量。 直流放电电路选择性地放电积累在实信号路径和虚信号路径中的至少一个上的DC。 LNA控制电路打开或关闭LNA。