公开(公告)号：US08130855B2

公开(公告)日：2012-03-06

申请号：US11254358

申请日：2005-10-20

申请人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

发明人： Jaeyoung Kwak ,  Chang-Soo Koo ,  Robert Lind Olesen ,  Aykut Bultan ,  Fatih Ozluturk

IPC分类号： H04L1/02 ,  H04B7/02

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US20100208772A1

公开(公告)日：2010-08-19

申请号：US12771710

申请日：2010-04-30

申请人： Fatih Ozluturk

发明人： Fatih Ozluturk

IPC分类号： H04B1/00 ,  H04B1/707

CPC分类号： H04B1/707 ,  H04B7/2628 ,  H04B7/2668 ,  H04B2001/6904 ,  H04B2201/70703 ,  H04L43/028 ,  H04L2012/6475 ,  H04W72/0413 ,  H04W72/042 ,  H04W88/02 ,  H04W88/08

摘要： A wireless communications system employs code-division multiple access information transmission techniques where the uplink and downlink transmission bandwidths are unequal. The higher bandwidth is an integer multiple of the lower bandwidth. The present system requires a base station and a subscriber unit to have two pseudo-random code generators which can be clocked separately. Alignment of the uplink and downlink pseudo-random spreading codes is achieved by truncating the code sequence for the lower speed link at the conclusion of a complete code sequence for the higher speed link.

摘要翻译： 无线通信系统采用码分多址信息传输技术，其中上行链路和下行链路的传输带宽不相等。 较高的带宽是较低带宽的整数倍。 本系统要求基站和用户单元具有可以单独计时的两个伪随机码发生器。 上行链路和下行链路伪随机扩展码的对准是通过在较高速链路的完整码序列结束时截断低速链路的码序列而实现的。

公开(公告)号：US07706332B2

公开(公告)日：2010-04-27

申请号：US11181450

申请日：2005-07-14

申请人： Fatih Ozluturk ,  Gary Lomp

发明人： Fatih Ozluturk ,  Gary Lomp

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

CPC分类号： G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H03H21/0018 ,  H03H2218/06 ,  H04B1/7075 ,  H04B1/70752 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/2637 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/004 ,  H04J13/10 ,  H04J13/107 ,  H04L1/004 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04W52/08 ,  H04W52/146 ,  H04W52/24 ,  H04W52/26 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

摘要： A system for rapidly acquiring a spreading code, used in a code division multiple access (CDMA) system, comprises a generator for generating a first long code and a second long code, with each long code having a length of N chips. The first long code is different from the second long code. A transmitter transmits the first long code and the second long code at a first phase angle and at a second phase angle, respectively, on a carrier signal over a communications channel using radio waves. The first long code and the second long code may be transmitted at an in-phase (I) angle and at a quadrature-phase (Q) angle, respectively, on the carrier signal. From the communications channel, an I acquisition circuit and a Q acquisition circuit may acquire, in parallel, the first long code and the second long code from the I angle and the Q angle, respectively, of the carrier signal by searching, in parallel, N/2 chips of the first long code and the second long code.

摘要翻译： 用于在码分多址（CDMA）系统中使用的用于快速获取扩展码的系统包括用于产生第一长码和第二长码的发生器，每个长码具有N个码片的长度。 第一个长代码与第二个长代码不同。 发射机通过使用无线电波的通信信道上的载波信号分别以第一相位角和第二相位角发送第一长码和第二长码。 第一长码和第二长码可以分别在载波信号上以同相（I）角度和正交相位（Q）角发射。 从通信信道，I采集电路和Q采集电路可以并行地通过并行地搜索载波信号的I角度和Q角度的第一长码和第二长码， 第一长码的N / 2码片和第二长码。

公开(公告)号：US07593357B2

公开(公告)日：2009-09-22

申请号：US10335347

申请日：2002-12-31

申请人： Fatih Ozluturk ,  Jung-Lin Pan

发明人： Fatih Ozluturk ,  Jung-Lin Pan

IPC分类号： H04B7/00 ,  H04B1/00 ,  H04K1/02

CPC分类号： H04B1/7105 ,  H04B1/62 ,  H04B1/7097 ,  H04B2201/709709 ,  H04L25/03178 ,  H04L25/03343 ,  H04L27/34 ,  H04L2025/03624

摘要： Data is to be transmitted in a code division multiple access communication system. A channel response is provided as a channel response matrix H approximating a channel that the data will experience after transmission. The data is spread and the spread data is processed with the channel response matrix H. The spread and processed data is transmitted. The data is received and recovered from the transmitted spread and processed data.

摘要翻译： 数据将在码分多址通信系统中发送。 提供信道响应作为接近传输后数据将经历的信道的信道响应矩阵H。 数据被扩展，扩展数据用信道响应矩阵H处理。扩展和处理的数据被传送。 从传输的扩展和处理数据中接收和恢复数据。

公开(公告)号：US07363049B2

公开(公告)日：2008-04-22

申请号：US10266882

申请日：2002-10-07

申请人： Sung-Hyuk Shin ,  Fatih Ozluturk ,  Ariela Zeira ,  Chang-Soo Koo

发明人： Sung-Hyuk Shin ,  Fatih Ozluturk ,  Ariela Zeira ,  Chang-Soo Koo

IPC分类号： H04B7/00

CPC分类号： H04W52/228 ,  H04W52/08 ,  H04W52/221 ,  H04W52/226 ,  H04W52/242 ,  H04W52/243 ,  H04W52/248 ,  H04W52/36

摘要： A transmitting station receives a transmit power command and a reference signal. The transmit power command indicates an increase or decrease in transmission power for the transmitting station. A received power level of the reference signal is measured and the measured reference signal received power level is compared to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal. A size of a change in transmit power level is determined using the pathloss estimate. A transmission power level of the transmitting station is adjusted in response to the transmit power command in an amount of the determined change in size. A communication is transmitted at the adjusted transmission power level.

摘要翻译： 发射站接收发射功率命令和参考信号。 发送功率指示表示发送站的发送功率的增加或减少。 测量参考信号的接收功率电平，并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，以产生参考信号的路径损耗估计。 使用路径损耗估计来确定发射功率电平变化的大小。 响应于所确定的大小变化量的发射功率命令来调整发射台的发射功率电平。 以调整的发送功率电平发送通信。

公开(公告)号：US20070008874A1

公开(公告)日：2007-01-11

申请号：US11519540

申请日：2006-09-12

申请人： Fatih Ozluturk ,  Alexander Jacques

发明人： Fatih Ozluturk ,  Alexander Jacques

IPC分类号： H04J11/00

CPC分类号： H04B1/71 ,  H04B1/70735 ,  H04B1/7101 ,  H04B1/7115

摘要： A receiver employing CDMA techniques estimates background noise based on a periodically updated code. The transmitted signal includes a periodically updated code of a predetermined type and wherein the received signal has CW interference in addition to the transmitted signal. The decision circuit determines if a value representing the likelihood of detection of the code exceeds a predetermined threshold. In the case of a pilot signal not being detected within a predetermined time period which corresponds to code update period, the background noise estimator obtains a new background estimation.

摘要翻译： 采用CDMA技术的接收机基于周期性更新的码来估计背景噪声。 所发送的信号包括预定类型的周期性更新的代码，并且除了发送的信号之外，所接收的信号具有CW干扰。 判定电路确定表示代码的检测可能性的值是否超过预定阈值。 在对应于代码更新周期的预定时间段内没有检测到导频信号的情况下，背景噪声估计器获得新的背景估计。

公开(公告)号：US20060133530A1

公开(公告)日：2006-06-22

申请号：US11254358

申请日：2005-10-20

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

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

IPC分类号： H04L1/02

CPC分类号： 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

摘要： 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.

摘要翻译： 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

申请人： David Mesecher ,  Fatih Ozluturk

发明人： David Mesecher ,  Fatih Ozluturk

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

CPC分类号： H04B1/126 ,  H01Q1/246 ,  H01Q3/2629

摘要： 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.

摘要翻译： 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：US06744809B2

公开(公告)日：2004-06-01

申请号：US10071899

申请日：2002-02-08

申请人： Gary Lomp ,  Fatih Ozluturk

发明人： Gary Lomp ,  Fatih Ozluturk

IPC分类号： H04B1500

CPC分类号： H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

摘要： A device tracks multipath components of a spread-spectrum signal. The spread-spectrum signal has an associated chip code sequence. The device receives multipath components of the spread-spectrum signal. A first and second plurality of multipath components are despread about a center code phase. The first plurality is a sequence of multipath components prior to the center code phase and the second plurality is a sequence of multipath components after the center code phase. A first and second combined energy is determined from the first and second plurality of multipath components. A tracking delay is calculated based on a difference between the first and the second combined energies. The center code phase is adjusted by said tracking delay.

摘要翻译： 一个设备跟踪扩频信号的多径分量。 扩频信号具有相关的码片序列。 该设备接收扩频信号的多径分量。 关于中心码相位解扩展第一和第二多个多径分量。 第一组是在中心码相位之前的多径分量序列，第二组是中心码相位之后的多径分量序列。 从第一和第二多个多径分量确定第一和第二组合能量。 基于第一和第二组合能量之间的差来计算跟踪延迟。 通过所述跟踪延迟来调整中心码相位。

公开(公告)号：US06229843B1

公开(公告)日：2001-05-08

申请号：US09444079

申请日：1999-11-22

申请人： Gary Lomp ,  Fatih Ozluturk ,  Avi Silverberg

发明人： Gary Lomp ,  Fatih Ozluturk ,  Avi Silverberg

IPC分类号： H04B1707

CPC分类号： H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

摘要： A CDMA modem includes a modem transmitter having: a code generator which provides an associated pilot code signal and which generates a plurality of message code signals; a spreading circuit which produces a spread-spectrum message signal by combining each of the information signals with a respective one of the message code signals; and a global pilot code generator that provides a global pilot code signal to which the message code signals are synchronized. The CDMA modem also includes a modem receiver having an associated pilot code generator and a group of associated pilot code correlators for correlating code-phase delayed versions of the associated pilot signal with a receive CDM signal to produce a despread associated pilot signal. The code phase of the associated pilot signal is changed responsive to an acquisition signal value until a pilot signal is received. The associated pilot code tracking logic adjusts the associated pilot code signal in phase responsive to the acquisition signal so that the signal power level of the despread associated pilot code signal is maximized. Finally, the CDMA modem receiver includes a group of message signal acquisition circuits, each including a plurality of receive message signal correlators which correlate respective local received message code signal to the CDM signal to produce a respective despread received message signal.

摘要翻译： CDMA调制解调器包括：调制解调器发送器，具有：代码生成器，其提供相关联的导频代码信号并产生多个消息代码信号; 扩展电路，其通过将每个信息信号与相应的一个消息代码信号组合来产生扩频消息信号; 以及提供消息代码信号同步的全局导频码信号的全局导频码发生器。 CDMA调制解调器还包括具有相关联的导频码发生器和一组相关联的导频码相关器的调制解调器接收机，用于将相关导频信号的码相位延迟版本与接收CDM信号相关，以产生解扩相关导频信号。 相应的导频信号的码相位响应于采集信号值而改变，直到接收到导频信号。 相关联的导频代码跟踪逻辑响应于采集信号相位调整相关联的导频代码信号，使得解扩相关导频码信号的信号功率电平最大化。 最后，CDMA调制解调器接收机包括一组消息信号采集电路，每组包括多个接收消息信号相关器，它将相应的本地接收到的消息码信号与CDM信号相关联，以产生相应的解扩接收消息信号。