公开(公告)号：US07616681B2

公开(公告)日：2009-11-10

申请号：US12398344

申请日：2009-03-05

Applicant: Young-Joon Song

Inventor： Young-Joon Song

IPC: H04B1/00

CPC classification number: H04L25/0226 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70755 ,  H04B1/709 ,  H04B1/7095 ,  H04B1/7115 ,  H04B7/2668 ,  H04B2201/70701 ,  H04J13/18 ,  H04L25/0224

Abstract: The frame words of the embodiments are suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and/or cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at zero and middle shifts are obtained. This property can be used to slot-by-slot, double-check frame synchronization timing, single frame synchronization and/or channel estimation and allows reduction of the synchronization search time. Further, the present invention allows a simpler construction of a correlator circuit for a receiver. A frame synchronization apparatus and method using an optimal pilot pattern is used in a wide band code division multiple Access (W-CDMA) next generation mobile communication system.

公开(公告)号：US07616622B2

公开(公告)日：2009-11-10

申请号：US11184917

申请日：2005-07-20

Applicant: Marian Rudolf ,  Bruno Jechoux

Inventor： Marian Rudolf ,  Bruno Jechoux

IPC: H04L7/00

CPC classification number: H04B1/708 ,  H04B1/70754 ,  H04B1/7077 ,  H04B7/2668 ,  H04B7/2687 ,  H04B7/2693 ,  H04B2201/70701 ,  H04J13/0014 ,  H04J13/102 ,  H04J13/107 ,  H04L7/042

Abstract: A synchronization signal used to synchronize base stations in a mobile radio telecommunication system having a first sequence followed by a second sequence, the first and second sequences being polyphase complementary sequences configured such that when the synchronization signal is correlated with a replica of the first sequence and a replica of the second sequence, and the correlation results are added exemplary synchronization results are obtained.

公开(公告)号：US07603133B2

公开(公告)日：2009-10-13

申请号：US11110164

申请日：2005-04-20

Applicant: Aykut Bultan ,  John W. Haim ,  Donald Grieco

Inventor： Aykut Bultan ,  John W. Haim ,  Donald Grieco

IPC: H04B15/00

CPC classification number: H04B1/7117 ,  H04B1/7073 ,  H04B1/70754 ,  H04B1/708 ,  H04B1/7095 ,  H04B2201/70701

Abstract: A method for determining the validity of a most significant path in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by accumulating a correlated data sequence N times, each time at a frame offset apart from the previous time. A preliminary noise estimate (PNE) is calculated as an average of the accumulated data values. A preliminary noise threshold (PNT) is calculated according to the equation C1×PNE. A final noise estimate (FNE) is calculated as the average of accumulated data values below the PNT. A final noise threshold (FNT) is calculated according to the equation C2×FNE. The validity of the most significant path is determined if the most significant path value is greater than the FNT.

Abstract translation: 用于确定无线通信系统中最重要路径的有效性的方法，其中以多路径环境中的帧为单位传输数据的开始是通过累积相关数据序列N次，每次与之前的时间相隔一帧偏移。 初步噪声估计（PNE）被计算为累积数据值的平均值。 根据等式C1xPNE计算初步噪声阈值（PNT）。 最终噪声估计（FNE）被计算为低于PNT的累积数据值的平均值。 根据等式C2xFNE计算最终噪声阈值（FNT）。 如果最显着的路径值大于FNT，则确定最重要路径的有效性。

公开(公告)号：US20090225813A1

公开(公告)日：2009-09-10

申请号：US12399676

申请日：2009-03-06

Applicant: Heung-Jae IM

Inventor： Heung-Jae IM

IPC: H04B1/707 ,  H04L27/28

CPC classification number: H04B7/0617 ,  H04B1/711 ,  H04B1/7117 ,  H04B1/712 ,  H04B2201/70701

Abstract: Disclosed is a weight vector computing unit using a symbol-rate, a chip-rate and/or a mixed-rate in a Smart Antenna System. The weight vector computing unit is useful in a wireless communication network having a reverse pilot channel. Further, by using such the weight vector computing unit, high-speed broadband communications are available in a smart antenna system. In such 3-G wireless communications where both traffic signals and pilot signals are transmitted from a terminal, the weight vector computing unit calculates optimized weight vectors using the pilot signal and the calculated weight vectors are adapted to each traffic signal. The weight vector computing unit is configured to receive the received signal and/or the integrated signal in order to produce a weight vector for beamforming without any training signal.

Abstract translation: 公开了一种在智能天线系统中使用符号率，码片速率和/或混合速率的权重向量计算单元。 权重向量计算单元在具有反向导频信道的无线通信网络中是有用的。 此外，通过使用这样的权重向量计算单元，在智能天线系统中可以使用高速宽带通信。 在从终端发送业务信号和导频信号的3-G无线通信中，权重向量计算单元使用导频信号来计算优化的权重向量，并且计算的权重向量适用于每个业务信号。 权重向量计算单元被配置为接收接收到的信号和/或积分信号，以便产生用于波束成形的权重向量，而没有任何训练信号。

公开(公告)号：US20090219889A1

公开(公告)日：2009-09-03

申请号：US12421331

申请日：2009-04-09

Applicant: Uwe Schwarz ,  Peter Muszynski ,  Harri Holma ,  Sari Korpela ,  Jussi Numminen

Inventor： Uwe Schwarz ,  Peter Muszynski ,  Harri Holma ,  Sari Korpela ,  Jussi Numminen

IPC: H04W36/00 ,  H04J3/06

CPC classification number: H04B1/7075 ,  H04B1/70735 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04W36/18

Abstract: A communication method and system are provided that include providing synchronization information about a co-sited downlink carrier. This information may be transmitted to from a base station to a mobile device. The mobile device may receive this information and perform handover or measurements based on the received synchronization information.

Abstract translation: 提供了一种通信方法和系统，其包括提供关于共同下行链路载波的同步信息。 该信息可以从基站发送到移动设备。 移动设备可以接收该信息并且基于接收到的同步信息执行切换或测量。

公开(公告)号：US20090202005A1

公开(公告)日：2009-08-13

申请号：US12027492

申请日：2008-02-07

Applicant: Douglas A. Cairns

Inventor： Douglas A. Cairns

IPC: H04L27/28 ,  H03K9/00

CPC classification number: H04L25/0246 ,  H04B1/71052 ,  H04B1/712 ,  H04B2201/70701 ,  H04B2201/709727 ,  H04L25/0224

Abstract: Teachings presented herein present a “whitening” channel estimation method and apparatus that produce high-quality net channel estimates for processing a received signal, such as a received CDMA signal. Processing includes forming an initial least squares problem (for medium channel estimates) using known pilot values and corresponding pilot observations for the received signal, transforming the initial least squares problem using a whitening transformation term, and solving the transformed least squares problem to obtain whitened medium channel estimates. The whitening transformation term may be determined, for example, by carrying out a Cholesky factorization of a (traffic) data correlation matrix, which can be obtained from traffic data values for the received signal. Processing further includes converting the whitened medium channel estimates into whitened net channel estimates, which consider the effects of transmit/receive filtering.

Abstract translation: 本文提出的教导提供了一种“白化”信道估计方法和装置，其产生用于处理诸如接收的CDMA信号的接收信号的高质量净信道估计。 处理包括使用已知导频值和接收信号的相应导频观测形成初始最小二乘问题（对于中等信道估计），使用白化变换项变换初始最小二乘问题，并求解变换最小二乘问题以获得白化介质 渠道估计。 白化变换项可以例如通过执行可以从接收信号的业务数据值获得的（业务）数据相关矩阵的Cholesky分解来确定。 处理进一步包括将白化的介质信道估计转换为白化净信道估计，其考虑发射/接收滤波的影响。

公开(公告)号：US20090201902A1

公开(公告)日：2009-08-13

申请号：US11910250

申请日：2006-03-20

Applicant: Nobuhiko Miki ,  Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

Inventor： Nobuhiko Miki ,  Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

IPC: H04B7/216

CPC classification number: H04W88/08 ,  G01S3/28 ,  H04B7/0408 ,  H04B7/0837 ,  H04B2201/70701 ,  H04L5/0026 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0228 ,  H04L27/2662

Abstract: A receiving apparatus receives control, pilot and data channels in an uplink. The apparatus includes a data-channel receiving unit for receiving the pilot channel in an antenna gain pattern of a multi-beam having multiple fixed directional beams with respectively different fixed directional directions or of a variable directional beam having a directional direction varying in accordance with the position of a mobile terminal; and a data-channel receiving unit for receiving the data channel in an antenna gain pattern of a multi-beam or a variable directional beam.

Abstract translation: 接收装置在上行链路中接收控制，导频和数据信道。 该装置包括数据信道接收单元，用于以具有分别具有不同的固定方向的多个固定方向性波束的多波束的天线增益模式或具有根据该方向的方向变化的可变方向波束的天线增益模式来接收导频信道 移动终端的位置; 以及数据信道接收单元，用于以多波束或可变方向波束的天线增益模式接收数据信道。

公开(公告)号：US20090180528A1

公开(公告)日：2009-07-16

申请号：US12415023

申请日：2009-03-31

Applicant: Jung-Lin Pan ,  Mihaela Beluri ,  Philip J. Pietraski

Inventor： Jung-Lin Pan ,  Mihaela Beluri ,  Philip J. Pietraski

IPC: H04L27/01

CPC classification number: H04L25/03038 ,  H04B1/712 ,  H04B2201/70701 ,  H04L25/03044 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/03617

Abstract: A normalized least means square (NLMS) equalizer including two equalizer filters is disclosed. In one embodiment, a single correction term generator is used to generate correction terms for tap coefficient updates of each of the equalizer filters based on a pilot signal. In another embodiment, two different correction term generators are used to generate correction terms for each of the equalizer filters, whereby one of the correction term generators uses data received from a hard decision unit at the output of one of the equalizer filters to generate correction terms for both of the equalizer filters.

Abstract translation: 公开了包括两个均衡器滤波器的归一化最小均方（NLMS）均衡器。 在一个实施例中，单个校正项生成器用于基于导频信号产生每个均衡器滤波器的抽头系数更新的校正项。 在另一个实施例中，使用两个不同的校正项发生器来产生每个均衡器滤波器的校正项，由此校正项发生器之一使用在均衡器滤波器之一的输出处从硬判决单元接收的数据来产生校正项 两个均衡器滤波器。

公开(公告)号：US20090154370A1

公开(公告)日：2009-06-18

申请号：US12298173

申请日：2007-04-27

Applicant: Keiko Yamaguchi

Inventor： Keiko Yamaguchi

IPC: H04L12/26 ,  H04B7/216

CPC classification number: H04B1/7097 ,  H04B17/336 ,  H04B17/373 ,  H04B2201/70701

Abstract: When a processing delay detection unit (27) detects that an end timing (F) of measurement of the reception quality of a common pilot signal transmitted from a wireless base station has delayed from a creation start time limit for reception quality information, approximate reception quality information (k) is created on the basis of reception quality measured before the creation start time limit. The approximate reception quality information is transmitted to a wireless base station. The delay of the transmission timing of the reception quality information can be prevented, and the wireless base station can quickly set the transmission rate of transmission data to a cellular phone.

Abstract translation: 当处理延迟检测单元（27）检测到从无线基站发送的公共导频信号的接收质量的测量的结束定时（F）已经从接收质量信息的创建开始时间限制延迟时，近似接收质量 基于在创建开始时间限制之前测量的接收质量创建信息（k）。 近似接收质量信息被发送到无线基站。 可以防止接收质量信息的发送定时的延迟，并且无线基站能够快速地将传输数据的传输速率设置到蜂窝电话。

公开(公告)号：US07548580B2

公开(公告)日：2009-06-16

申请号：US11452840

申请日：2006-06-14

Applicant: Michiel Lötter ,  Danie van Wyk

Inventor： Michiel Lötter ,  Danie van Wyk

IPC: H04B1/707

CPC classification number: H04B1/71075 ,  H04B1/712 ,  H04B2201/70701

Abstract: A system and method for interference reduction in a spread spectrum receiver including a rake receiver having a plurality of fingers for processing a plurality of data signals and an associated plurality of pilot signals is disclosed herein. The method includes generating a plurality of intra-finger interference cancellation signals using the plurality of pilot signals. In this regard each of the plurality of intra-finger interference cancellation signals are associated with one of the plurality of fingers. Ones of the plurality of intra-finger interference cancellation signals are weighted so as to generate a set of weighted intra-finger interference cancellation signals. The method further includes synthesizing at least one inter-finger interference cancellation signal in accordance with the set of weighted intra-finger cancellation signals. At least one inter-finger cancellation signal may then be subtracted from a corresponding one of a plurality of data signals.

Abstract translation: 本文公开了一种包括具有用于处理多个数据信号的多个指状物的耙式接收机和相关联的多个导频信号的扩展频谱接收机中的干扰减少的系统和方法。 该方法包括使用多个导频信号产生多个手指内干扰消除信号。 在这方面，多个手指内干扰消除信号中的每一个与多个手指中的一个相关联。 对多个手指内干扰消除信号进行加权，以产生一组加权的手指中干扰消除信号。 该方法还包括根据加权的手指内取消信号的集合合成至少一个手指间干扰消除信号。 然后可以从多个数据信号中的对应的一个数据信号中减去至少一个手指间取消信号。