公开(公告)号：US08532064B2

公开(公告)日：2013-09-10

申请号：US12979318

申请日：2010-12-27

Applicant: Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takausaki ,  Shoji Miyamoto

Inventor： Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takausaki ,  Shoji Miyamoto

IPC: H04Q7/00

CPC classification number: H04B1/7113 ,  G01S3/74 ,  H04B1/7117 ,  H04B7/0617 ,  H04B7/086 ,  H04B2201/70701 ,  H04B2201/70715 ,  H04L1/06

Abstract: A receiver having an array antenna estimates arrival directions of multiple paths that arrive with an angular spread. Consequently, arrival direction estimation accuracy can be ensured without increasing throughput even if the power every path is low by estimating an average arrival direction of an entire set of multiple paths having the angular spread from a result of one angular spectrum by multiple correlation operation units that perform mutual correlation operations with pilot signals for baseband signals received by the array antenna, a path detection unit that detects multiple arrival path receiving timings by generating a delay profile based on output of each of the correlation operation units, a path correlation value synthesis unit that synthesizes a correlation operation value calculated in the multiple correlation operation units and an arrival direction estimation unit that collectively estimates multiple path arrival directions using output of the path correlation value synthesis unit.

公开(公告)号：US20130215801A1

公开(公告)日：2013-08-22

申请号：US13810649

申请日：2011-07-19

Applicant: Huiheng Mai ,  Paul Howard ,  Alan Edward Jones

Inventor： Huiheng Mai ,  Paul Howard ,  Alan Edward Jones

IPC: H04J3/02

CPC classification number: H04J3/02 ,  H04B1/707 ,  H04B2201/70701 ,  H04L5/0048 ,  H04L25/0224

Abstract: A wireless communication unit for recovering transmit data comprises a receiver for receiving a signal comprising a data payload and at least two pilots, wherein at least a first pilot type of the at least two pilots is different to a second pilot type of the at least two pilots. The wireless communication unit further comprises a processor arranged to: extract at least one pilot of the first pilot type from the received signal; and recover the data payload from the received signal using the extracted at least one pilot of the first pilot type.

Abstract translation: 一种用于恢复发送数据的无线通信单元包括：接收器，用于接收包括数据有效载荷和至少两个导频的信号，其中所述至少两个导频的至少第一导频类型与所述至少两个导频的第二导频类型不同 飞行员 所述无线通信单元还包括：处理器，被配置为：从所接收的信号中提取所述第一导频类型的至少一个导频; 并且使用所提取的所述第一导频类型的至少一个导频从所接收的信号恢复所述数据有效载荷。

公开(公告)号：US08509262B2

公开(公告)日：2013-08-13

申请号：US13572955

申请日：2012-08-13

Applicant: Kengo Oketani ,  Yoshikazu Kakura

Inventor： Kengo Oketani ,  Yoshikazu Kakura

IPC: H04Q7/00

CPC classification number: H04L5/0044 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/0048 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446

Abstract: A mobile station in a communication system including a base station, the mobile station includes a unit for sending a signal that allocates a plurality of different Zadoff-Chu sequences to a frame to the base station.

Abstract translation: 在包括基站的通信系统中的移动站中，移动站包括用于向基站发送向帧分配多个不同的Zadoff-Chu序列的信号的单元。

公开(公告)号：US20130148699A1

公开(公告)日：2013-06-13

申请号：US13316084

申请日：2011-12-09

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/709 ,  H04L27/01

CPC classification number: H04L25/03133 ,  H04B2201/70701

Abstract: Communication signal processing entails generating an overall signal correlation estimate that reflects overall impairment present in a received signal before despreading. Processing further includes parametrically constructing one or more component-specific correction terms as a function of one or more component signal correlation estimates, each estimate reflecting a particular component of the overall impairment. Combining weights are derived, as a function of this overall estimate and the correction term(s), so that they exclude the contribution of the impairment component(s) to the overall impairment. These weights are used to combine signal samples in an equalization process. As the combining weights exclude the contribution of the impairment component(s) to the overall impairment, the equalization process utilizing the weights exclusively suppresses impairment that is not attributable to the component(s). This advantageously avoids redundant suppression of the impairment component(s), since processing further includes despreading the received signal in a despreading process that suppresses the component(s).

Abstract translation: 通信信号处理需要产生总体信号相关估计，其反映在解扩之前在接收信号中存在的总体损害。 处理进一步包括参数地构造一个或多个组件特定校正项作为一个或多个分量信号相关估计的函数，每个估计反映整体损伤的特定分量。 作为该总体估计和校正期限的函数，导出权重的组合，使得它们不包括减值成分对整体损益的贡献。 这些权重用于在均衡过程中组合信号样本。 由于组合权重不包括损害成分对总体损害的贡献，所以利用权重的均衡处理仅仅抑制不归因于成分的损失。 这有利地避免了损伤部件的冗余抑制，因为处理进一步包括在抑制部件的解扩过程中解扩接收到的信号。

公开(公告)号：US20130136087A1

公开(公告)日：2013-05-30

申请号：US13750109

申请日：2013-01-25

Applicant: Elias Jonsson ,  Andres Reial

Inventor： Elias Jonsson ,  Andres Reial

IPC: H04W72/12

CPC classification number: H04W72/12 ,  H04B1/7103 ,  H04B1/712 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0697 ,  H04B2201/70701 ,  H04B2201/709727 ,  Y02D70/40 ,  Y02D70/444

Abstract: A method of transmitting communication signals to a plurality of targeted receivers includes transmitting one or more information streams for individual ones of the targeted receivers according to ongoing transmission scheduling, and controlling the ongoing transmission scheduling to reduce the number of impairment contributors that must be considered in received signal processing by scheduled ones of the targeted receivers. In one embodiment the controlling comprises scheduling the targeted receivers to avoid transmissions to more than one targeted receiver at a time. In the same or another embodiment, the controlling comprises at least one of using equal transmit power allocations for one or more information streams, and using fixed transmit power allocations for one or more of the information streams.

Abstract translation: 将通信信号发送到多个目标接收机的方法包括根据正在进行的传输调度向目标接收机中的一个发送一个或多个信息流，并且控制正在进行的传输调度以减少必须考虑的损害贡献者的数量 由目标接收机中的预定接收机接收信号处理。 在一个实施例中，控制包括调度目标接收机以避免一次传送到多于一个的目标接收机。 在相同或另一个实施例中，控制包括对一个或多个信息流使用相等的发射功率分配以及对于一个或多个信息流使用固定的发射功率分配中的至少一个。

公开(公告)号：US08422544B2

公开(公告)日：2013-04-16

申请号：US11856678

申请日：2007-09-17

Applicant: Yongbin Wei ,  Durga Prasad Malladi ,  Josef Blanz

Inventor： Yongbin Wei ,  Durga Prasad Malladi ,  Josef Blanz

IPC: H03H7/30

CPC classification number: H04B1/7105 ,  H04B2201/70701 ,  H04L25/0228 ,  H04L25/03044 ,  H04L2025/03509 ,  H04L2025/03522 ,  H04L2025/03598 ,  H04L2025/03617

Abstract: In a wireless communication system, a method for estimating a transmitted signal is disclosed. A wireless signal is received that includes a pilot channel and at least one other channel. A transmitted signal is estimated using an equalizer and the received wireless signal. The equalizer includes a filter with a plurality of taps that are adapted through use of an adaptive algorithm that uses an estimated pilot estimated from the received wireless signal. The pilot channel is transmitted in the wireless signal that included the at least one other channel. The estimated pilot is extracted and provided to the adaptive algorithm.

Abstract translation: 在无线通信系统中，公开了一种用于估计发送信号的方法。 接收包括导频信道和至少一个其它信道的无线信号。 使用均衡器和接收到的无线信号来估计发送信号。 均衡器包括具有多个抽头的滤波器，其通过使用自适应算法来适配，所述自适应算法使用从所接收的无线信号估计的估计导频。 在包括至少一个其他信道的无线信号中发送导频信道。 估计的导频被提取并提供给自适应算法。

公开(公告)号：US08406359B2

公开(公告)日：2013-03-26

申请号：US12712907

申请日：2010-02-25

Applicant: Gokhan Mergen ,  Parvathanathan Subrahmanya ,  Vijayaraj Alilaghatta-Kantharaj ,  Nitin Kasturi

Inventor： Gokhan Mergen ,  Parvathanathan Subrahmanya ,  Vijayaraj Alilaghatta-Kantharaj ,  Nitin Kasturi

IPC: H04B1/10

CPC classification number: H04L25/025 ,  H04B17/3913 ,  H04B2201/70701 ,  H04L25/0212 ,  H04L25/0228 ,  H04L25/03038

Abstract: Techniques for filtering noisy estimates to reduce estimation errors are described. A sequence of input values (e.g., for an initial channel impulse response estimate (CIRE)) is filtered with an infinite impulse response (IIR) filter having at least one coefficient to obtain a sequence of output values (e.g., for a filtered CIRE). The coefficient(s) are updated based on the sequence of input values with an adaptive filter, a bank of prediction filters, or a normalized variation technique. To update the coefficient(s) with the adaptive filter, a sequence of predicted values is derived based on the sequence of input values. Prediction errors between the sequence of predicted values and the sequence of input values are determined and filtered to obtain filtered prediction errors. The coefficient(s) of the IIR filter are then updated based on the prediction errors and the filtered prediction errors.

Abstract translation: 描述了用于过滤噪声估计以减少估计误差的技术。 输入值的序列（例如，对于初始信道脉冲响应估计（CIRE））用具有至少一个系数的无限脉冲响应（IIR）滤波器进行滤波以获得输出值序列（例如，对于滤波后的CIRE） 。 基于具有自适应滤波器，预测滤波器组或归一化变化技术的输入值的序列来更新系数。 为了用自适应滤波器更新系数，基于输入值的序列导出预测值序列。 确定并过滤预测值序列与输入值序列之间的预测误差，以获得滤波预测误差。 然后基于预测误差和滤波预测误差来更新IIR滤波器的系数。

公开(公告)号：US08374220B2

公开(公告)日：2013-02-12

申请号：US12302601

申请日：2007-05-15

Applicant: Rodolfo Verzegnassi ,  Fabrizio Tomatis

Inventor： Rodolfo Verzegnassi ,  Fabrizio Tomatis

IPC: H04B1/00

CPC classification number: H04B7/0894 ,  H04B1/712 ,  H04B2201/70701 ,  H04L1/0631

Abstract: A communication receiver includes first and second antenna elements for receiving first and second signals respectively representative of first and second symbols encoded with a first or second channel coefficient and first and second delay lines for delaying the first and second signals respectively. A master rake module up-samples a pilot channel sequence at chip rate to mix it with the second delayed signals to deliver correlated delayed signals and to determine first and second channel coefficient estimates from the first delayed signals and the correlated delayed signals. A slave rake module determines first and second auxiliary composite symbols from the first and second delayed signals, a scrambling code sequence and a spreading code sequence. Lastly the first and second auxiliary composite symbols combine with the first and second channel coefficient estimates to determine first and second output signals.

Abstract translation: 通信接收机包括用于接收分别代表用第一或第二信道系数编码的第一和第二符号的第一和第二信号的第一和第二天线元件，以及用于分别延迟第一和第二信号的第一和第二延迟线。 主耙模块以码片速率对导频信道序列进行上采样，以将其与第二延迟信号混合以递送相关延迟信号，并根据第一延迟信号和相关延迟信号确定第一和第二信道系数估计。 从属耙模块根据第一和第二延迟信号确定第一和第二辅助复合符号，扰码序列和扩展码序列。 最后，第一和第二辅助复合符号与第一和第二信道系数估计结合以确定第一和第二输出信号。

公开(公告)号：US08363588B2

公开(公告)日：2013-01-29

申请号：US12560540

申请日：2009-09-16

Applicant: Takashi Seyama

Inventor： Takashi Seyama

IPC: H04H20/71

CPC classification number: H04W72/005 ,  H04B1/7083 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04J11/0079 ,  H04L5/005 ,  H04W72/042

Abstract: In a cell-specific pilot signal transmitting method for use in a mobile communication system that comprises a base station and a wireless mobile station in the cell of a wireless communication area formed by the base station and that can mix and then transmit unicast data and broadcast/multicast data as downstream data from the base station to the mobile station, the difference between the start phase of a cell-specific pilot signal transmitted in a subframe in which the base station transmits the unicast data and the start phase of a cell-specific pilot signal transmitted in the next subframe is equal to the difference between the start phase of a cell-specific pilot signal transmitted in a subframe in which the base station transmits the broadcast/multicast data and the start phase of a cell-specific pilot signal transmitted in the next subframe.

Abstract translation: 在用于移动通信系统的小区特定导频信号发送方法中，该移动通信系统包括由基站形成的无线通信区域的小区中的基站和无线移动站，并且可以混合然后发送单播数据和广播 /组播数据作为从基站到移动台的下行数据，在基站发送单播数据的子帧中发送的小区特定导频信号的开始相位与小区特定导频信号的开始阶段之间的差异 在下一子帧中发送的导频信号等于基站发送广播/多播数据的子帧中发送的小区特定导频信号的开始相位与发送的小区特定导频信号的开始相位之间的差 在下一个子帧。

公开(公告)号：US20130010835A1

公开(公告)日：2013-01-10

申请号：US13621128

申请日：2012-09-15

Applicant: Emmanuel KANTERAKIS ,  Kourosh Parsa

Inventor： Emmanuel KANTERAKIS ,  Kourosh Parsa

IPC: H04B1/7073

CPC classification number: H04B1/7075 ,  H04B1/707 ,  H04B7/2668 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04J11/0069 ,  H04W4/06 ,  H04W24/00 ,  H04W52/325 ,  H04W52/362 ,  H04W52/367 ,  H04W52/48 ,  H04W56/00 ,  H04W74/00

Abstract: A disclosed code-division-multiple-access (CDMA) system has a base station (BS) and remote stations (RSs). A BS-spread-spectrum transmitter broadcasts a common-synchronization channel having a chip-sequence signal common to the remote stations served by the BS, and a frame-timing signal. A RS-spread-spectrum receiver receives the broadcast common-synchronization channel, and determines frame timing from the frame-timing signal. A first RS-spread-spectrum transmitter transmits an access-burst signal, which has a plurality of segments. Each access burst signal segment has a plurality of power levels. A BS-spread-spectrum receiver receives the access-burst signal at a detected-power level. In response to receiving the access-burst signal, a BS-spread-spectrum transmitter transmits an acknowledgment signal to the RS-spread-spectrum receiver. The RS-spread-spectrum receiver receives the acknowledgment signal, and in, the RS-spread-spectrum transmitter transmits a spread-spectrum signal having data to the BS-spread-spectrum receiver.

Abstract translation: 公开的码分多址（CDMA）系统具有基站（BS）和远程站（RS）。 BS扩频发射机广播具有由BS服务的远程站公共的码片序列信号的公共同步信道和帧定时信号。 RS扩频接收机接收广播公共同步信道，并从帧定时信号确定帧定时。 第一RS扩频发射机发送具有多个段的接入突发信号。 每个接入脉冲串信号段具有多个功率电平。 BS扩频接收机以检测功率电平接收接入脉冲串信号。 响应于接收到接入突发信号，BS扩频发射机向RS扩频接收机发送确认信号。 RS扩频接收机接收确认信号，并且，RS扩频发射机向BS扩频接收机发送具有数据的扩频信号。