公开(公告)号：US20080051049A1

公开(公告)日：2008-02-28

申请号：US11889311

申请日：2007-08-10

申请人： Nobuhiro Katoh ,  Yasuhiro Wada

发明人： Nobuhiro Katoh ,  Yasuhiro Wada

IPC分类号： H04B1/16

CPC分类号： H04N5/44 ,  H04B7/0817 ,  H04N21/4263

摘要： A reception circuit receives a digital modulated high frequency signal and is equipped with a plurality of reception systems for receiving the same reception frequency. At least two reception systems share a voltage controlled oscillator of a frequency converting portion that performs frequency conversion of a signal based on the digital modulated high frequency signal, a reference signal oscillator, and a PLL circuit that generates a control voltage based on an output signal of the voltage controlled oscillator and a reference signal delivered from the reference signal oscillator and controls the voltage controlled oscillator based on the control voltage. The frequency converting portion delivers an intermediate frequency signal. The reception circuit includes an intermediate frequency variable gain amplifier that receives a signal based on the intermediate frequency signal. The frequency converting portion and the intermediate frequency variable gain amplifier are integrated into a single IC package, so that cost reduction and space saving can be achieved.

摘要翻译： 接收电路接收数字调制高频信号，并配备有用于接收相同接收频率的多个接收系统。 至少两个接收系统共享基于数字调制高频信号的信号的频率转换的频率转换部分的压控振荡器，参考信号振荡器和基于输出信号产生控制电压的PLL电路 的压控振荡器和从参考信号振荡器传送的参考信号，并且基于控制电压来控制压控振荡器。 频率变换部输出中频信号。 接收电路包括中频可变增益放大器，其接收基于中频信号的信号。 变频部分和中频可变增益放大器集成在单个IC封装中，从而可以实现成本降低和节省空间。

公开(公告)号：US20070071150A1

公开(公告)日：2007-03-29

申请号：US11527693

申请日：2006-09-27

申请人： Fang Yang ,  Hung-Chi Lai ,  Kuo Lai ,  Ching-Piao Hung ,  Chun Huang

发明人： Fang Yang ,  Hung-Chi Lai ,  Kuo Lai ,  Ching-Piao Hung ,  Chun Huang

IPC分类号： H04B7/10 ,  H04L27/28

CPC分类号： H04L25/022 ,  H04B7/0817 ,  H04B7/0845

摘要： This invention provides a diversity receiver, which has N branches for receiving M versions of an input signal. The diversity receiver comprises N channel state information estimators, a demodulator and a combining and demapping device. After receiving the M versions of the input signal, the demodulator performs demodulation and then generates M demodulated signals. N channel state information estimators, one channel state information estimator equipped for each branch, respectively fetches the signals from the demodulator to generate M channel parameters related to the M versions of the input signal. The combining and demapping device receives the M demodulated signals, performs signal combining operations and symbol demapping, and finally generate a pre-correcting signal.

摘要翻译： 本发明提供了一种分集接收机，其具有用于接收M个输入信号的N个分支。 分集接收机包括N信道状态信息估计器，解调器和组合解映射器。 在接收到M版本的输入信号之后，解调器执行解调，然后产生M个解调信号。 N个信道状态信息估计器，每个分支配备的一个信道状态信息估计器分别从解调器中取出信号以生成与M个输入信号相关的M个信道参数。 组合和解映射装置接收M个解调信号，执行信号组合操作和符号解映射，最后生成预校正信号。

公开(公告)号：US20060148433A1

公开(公告)日：2006-07-06

申请号：US11028870

申请日：2005-01-04

申请人： William Welnick ,  William Alberth ,  Robert Love

发明人： William Welnick ,  William Alberth ,  Robert Love

IPC分类号： H04B1/00

CPC分类号： H04B7/0817

摘要： A method for controlling diversity receivers in a wireless communication device includes the steps of: determining if the wireless communication device is experiencing poor coverage (220), using a first receiver and a second receiver for diversity (230) if the wireless communication device is experiencing poor coverage, and using the second receiver for scanning (240) if the wireless communication device is not experiencing poor coverage. Thus, diversity can be used when needed to improve reception. Both receivers, however, can be used in a non-diversity mode to reduce current drain or to speed up channel acquisition when coverage is not poor.

摘要翻译： 一种用于控制无线通信设备中的分集接收机的方法包括以下步骤：如果无线通信设备正在经历无线通信设备，则确定无线通信设备是否正在经历差的覆盖（220），使用第一接收机和第二接收机进行分集（230） 如果无线通信设备没有经历差的覆盖，则使用第二接收机进行扫描（240）。 因此，当需要改善接收时，可以使用多样性。 然而，当覆盖不差时，两个接收器都可以用于非分集模式以减少电流消耗或加速通道采集。

公开(公告)号：US20060025171A1

公开(公告)日：2006-02-02

申请号：US10899916

申请日：2004-07-27

申请人： Liem Ly ,  Pratik Mehta

发明人： Liem Ly ,  Pratik Mehta

IPC分类号： H04B7/00 ,  H04B1/06

CPC分类号： H04B7/0817 ,  H04B1/006 ,  H04B1/406 ,  H04B1/44 ,  H04B7/0602 ,  H04W88/02

摘要： An information handling system (IHS) is provided which includes multiple radios having different architectures. The IHS also includes multiple antennas. A selected one of the radios is given priority over other of the radios to be connected to an appropriate one of the multiple antennas. The disclosed system desirably reduces the number of switches required to couple the antennas to the radios.

摘要翻译： 提供了一种信息处理系统（IHS），其包括具有不同架构的多个无线电装置。 IHS还包括多个天线。 所选无线电设备中的一个被优先于要连接到多个天线中适当一个的无线电设备。 所公开的系统期望地减少将天线耦合到无线电装置所需的开关的数量。

公开(公告)号：US20050233716A1

公开(公告)日：2005-10-20

申请号：US10965117

申请日：2004-10-14

申请人： Rajiv Laroia ,  Junyi Li ,  Frank Lane

发明人： Rajiv Laroia ,  Junyi Li ,  Frank Lane

IPC分类号： H04B1/00 ,  H04B1/10 ,  H04B1/40 ,  H04B7/08 ,  H04B15/00 ,  H04B17/00 ,  H04B17/02 ,  H04M1/00

CPC分类号： H04B1/1027 ,  H04B1/005 ,  H04B1/3805 ,  H04B1/406 ,  H04B7/0808 ,  H04B7/0814 ,  H04B7/0817 ,  H04B17/327 ,  H04B17/382

摘要： Receivers accommodating frequency band selection methods in wireless communications systems are described. Different frequency bands are associated with different alternative carrier frequencies and/or base station cell and/or sector transmitter connection alternatives. Mobile node receivers include two receiver chains, each chain processing signals corresponding to a carrier. In some embodiments, each receiver chain includes its own controllable RF module, and individual carrier band selection is performed in each RF module. In some embodiments, the two receiver chains share a common RF module; however, each chain includes its own controllable baseband filter. In various embodiments, the first chain has higher complexity than the second chain. In most embodiments, each chain uses the same technology, e.g., spread spectrum OFDM or CDMA. Each chain obtains a quality indicator value on a different band and a comparison of quality indicator values is used in selecting the channel and carrier band for downlink traffic signaling.

摘要翻译： 描述了在无线通信系统中容纳频带选择方法的接收机。 不同的频带与不同的替代载波频率和/或基站小区和/或扇区发射机连接替代方案相关联。 移动节点接收器包括两个接收器链，每个链处理信号对应于载波。 在一些实施例中，每个接收器链包括其自己的可控RF模块，并且在每个RF模块中执行单独的载波频带选择。 在一些实施例中，两个接收器链共享共同的RF模块; 然而，每个链包括其自己的可控基带滤波器。 在各种实施例中，第一链具有比第二链更高的复杂性。 在大多数实施例中，每个链使用相同的技术，例如扩频OFDM或CDMA。 每个链在不同频带上获得质量指标值，并且在选择用于下行链路业务信令的信道和载波频带时使用质量指标值的比较。

公开(公告)号：US06678508B1

公开(公告)日：2004-01-13

申请号：US09499848

申请日：2000-02-07

申请人： Ravinder David Koilpillai ,  David R. Irvin

发明人： Ravinder David Koilpillai ,  David R. Irvin

IPC分类号： H04B1702

CPC分类号： H04B7/0871 ,  H04B7/0817 ,  H04B7/0857 ,  H04W52/0245 ,  Y02D70/444

摘要： A mobile communications device includes at least two receivers and a memory module. The power consumption of the mobile communications device is controlled by selectively awakening and sleeping the receivers as needed to ensure that the desired quality of reception to check the control channel for messages from an associated base station and to handle incoming communications is maintained. The mobile communications device may operate in single receiver mode or dual receiver diversity mode. In the dual receiver diversity mode, the mobile communications device may switch between one of a number of diversity combining techniques based on the quality of reception.

摘要翻译： 移动通信设备包括至少两个接收机和存储器模块。 通过根据需要有选择地唤醒和休眠接收机来控制移动通信设备的功耗，以确保维持从相关联的基站检查消息的控制信道的所需接收质量并处理进入的通信。 移动通信设备可以在单个接收机模式或双重接收机分集模式下操作。 在双重接收机分集模式中，移动通信设备可以基于接收质量在多个分集组合技术之一进行切换。

公开(公告)号：US20030083016A1

公开(公告)日：2003-05-01

申请号：US10247927

申请日：2002-09-20

申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V.

发明人： David H. Evans ,  Bhavin S. Khatri ,  Deborah L. Raynes

IPC分类号： H04B017/00 ,  H04M001/00 ,  H04B001/38 ,  G01R001/00

CPC分类号： H04B7/0874 ,  H04B7/0608 ,  H04B7/0691 ,  H04B7/0814 ,  H04B7/0817

摘要： A method of selecting a combination of transmit antennas (TA1 to TA4) and receive antennas (RA1 to RA4) in a MIMO antenna system to give the best isolation from adjacent parallel signal streams comprises transmitting a first signal from one of the transmit antennas and measuring a quality metric, for example signal strength, of the received signal at each of the receive antennas. The process is repeated using signals transmitted in turn by each the remaining transmit antennas. A channel matrix is compiled of the transmit antennas versus the receive antennas and a selection is made of a combination of transmit and receive antennas receiving acceptably a first signal and unacceptably a second signal and vice versa. The selected combination is used to send and receive MIMO signals. Switches (SW1, SW2) are provided for coupling the selected antennas to the respective transmitters (TX1, TX2) and receivers (RX1, RX2).

摘要翻译： 在MIMO天线系统中选择发射天线（TA1至TA4）和接收天线（RA1至RA4）的组合以从相邻并行信号流中提供最佳隔离的方法包括从发射天线之一发送第一信号并测量 在每个接收天线处的接收信号的质量度量，例如信号强度。 使用依赖于每个剩余的发射天线的信号重复该过程。 编码发射天线与接收天线的信道矩阵，并且选择发射天线和接收天线的组合，可接收地接收第一信号，反之亦然。 所选择的组合用于发送和接收MIMO信号。 提供开关（SW1，SW2）用于将所选择的天线耦合到各个发射机（TX1，TX2）和接收机（RX1，RX2）。

公开(公告)号：US20020181628A1

公开(公告)日：2002-12-05

申请号：US10148387

申请日：2002-05-31

发明人： Hitoshi Iochi ,  Kazuyuki Miya

IPC分类号： H04B007/10

CPC分类号： H04B7/0874 ,  H04B1/7113 ,  H04B1/7117 ,  H04B7/01 ,  H04B7/0817 ,  H04B7/084

摘要： Delay profile generation sections 101 and 102 generate delay profiles from signals received from their respective antennas, delay profile addition section 104 adds up the delay profiles to generate an antenna combined delay profile. Path selection section 105 selects an arbitrary number of path phases from the delay profiles input through switching section 103 when a Doppler frequency is lower than a predetermined value and selects an arbitrary number of path phases of their respective antennas from the antenna combined delay profile when the Doppler frequency is higher than the predetermined value.

摘要翻译： 延迟分布生成部分101和102从从其各自的天线接收的信号中产生延迟分布，延迟分布添加部分104将延迟分布相加以产生天线组合延迟分布。 当多普勒频率低于预定值时，路径选择单元105从通过切换单元103输入的延迟分布中选择任意数量的路径相位，并从天线组合延迟分布中选择其各自天线的任意数量的路径相位 多普勒频率高于预定值。

公开(公告)号：US06473601B1

公开(公告)日：2002-10-29

申请号：US09384177

申请日：1999-08-27

申请人： Toshiyuki Oda

发明人： Toshiyuki Oda

IPC分类号： H04B104

CPC分类号： H04B7/0877 ,  H04B7/0817 ,  H04W52/0245 ,  H04W52/0283 ,  Y02D70/444

摘要： A reception diversity control method for receiving and demodulating receive signal by multiple receiver circuits, selecting demodulated data received by a receiver circuit in the best reception state from digital demodulated data obtained, the method having the steps of: taking out voice existence information included in the demodulated data selected; and turning on the power sources of all the multiple receiver circuits when the voice existence information indicates that voice information exists, or turning off the power sources of the multiple receiver circuits except a predetermined receiver circuit of the multiple receiver circuits when the voice existence information indicates that no voice information exists.

摘要翻译： 一种用于由多个接收机电路接收和解调接收信号的接收分集控制方法，从获得的数字解调数据中选择由接收电路接收的接收电路接收的解调数据，该方法具有以下步骤：取出包含在 解调数据选择; 并且当语音存在信息指示存在语音信息时，接通所有多个接收机电路的电源，或者当语音存在信息指示时，关闭除了多个接收机电路的预定接收机电路之外的多个接收机电路的电源 没有语音信息存在。

公开(公告)号：US5805643A

公开(公告)日：1998-09-08

申请号：US814152

申请日：1997-03-10

申请人： Keiko Seki ,  Koji Ogura

发明人： Keiko Seki ,  Koji Ogura

IPC分类号： H04B7/08 ,  H04B17/02 ,  H04B7/10

CPC分类号： H04B7/0817 ,  H04B7/0828

摘要： A diversity receiver system includes reception circuits connected to antennas for converting frequency of a received signal to a base band signal; a diversity branch comparison circuit for directing a base band signal to be used by comparing an intermediate frequency supplied through the reception circuit; a base band delay detection circuit for outputting a detection signal which is generated by a delay detection of the base band signal directed by the diversity branch comparison circuit; and a DPLL circuit for generating an internal clock by using the detection signal supplied from the base band delay detection circuit, thereby securing a stable reception and providing a diversity receiver system having a small circuit scale.

摘要翻译： 分集接收机系统包括连接到天线的接收电路，用于将接收信号的频率转换为基带信号; 用于通过比较通过接收电路提供的中频来引导要使用的基带信号的分集分支比较电路; 基带延迟检测电路，用于输出由分集支路比较电路引导的基带信号的延迟检测产生的检测信号; 以及DPLL电路，用于通过使用从基带延迟检测电路提供的检测信号来产生内部时钟，从而确保稳定的接收并提供具有小电路规模的分集接收机系统。