公开(公告)号：US20060067277A1

公开(公告)日：2006-03-30

申请号：US11209308

申请日：2005-08-23

申请人： Timothy Thomas ,  Kevin Baum ,  Frederick Vook ,  Xiangyang Zhuang

发明人： Timothy Thomas ,  Kevin Baum ,  Frederick Vook ,  Xiangyang Zhuang

IPC分类号： H04Q7/00

CPC分类号： H04B7/0634 ,  H04B7/04 ,  H04B7/0636 ,  H04B7/0639 ,  H04B7/066 ,  H04B7/0691 ,  H04L27/2601

摘要： A method for communicating a plurality of data streams between a transmitting device with multiple transmit antennas and a receiving device, is disclosed. The method comprises determining a list consisting of a subset of the multiple transmit antennas on which the transmitting device will transmit data, determining a set of power weightings, providing the set of power weightings and the list of the subset of the multiple transmit antennas to the transmitting device, weighting a plurality of data streams by the power weightings, and transmitting the power weighted data streams on the subset of the multiple transmit antennas to the receiving device. Another aspect of the invention comprises maintaining a codebook consisting of a plurality of transmit weight vectors at both the transmitting device and the receiving device. The method also comprises determining a list consisting of a subset of the plurality of transmit weight vectors which to use for transmitting the multiple data streams, determining a set of power weightings to be use for each data stream, providing the set of power weightings and the list of the subset of the plurality of transmit weight vectors to the transmitting device, and weighting the data streams by the power weightings and beamforming the data streams with the subset of the plurality of transmit weight vectors.

摘要翻译： 公开了一种在具有多个发射天线的发射装置与接收装置之间传送多个数据流的方法。 该方法包括确定由发射设备将在其上发射数据的多个发射天线的子集组成的列表，确定一组功率加权，提供该组功率加权和多个发射天线的子集的列表到 发送设备，通过功率加权对多个数据流进行加权，以及将多个发射天线的子集上的功率加权数据流发送到接收设备。 本发明的另一方面包括在发送设备和接收设备两者处维护由多个发送权重向量组成的码本。 该方法还包括确定由用于发送多个数据流的多个发射权重向量的子集组成的列表，确定要为每个数据流使用的一组功率权重，提供该组功率权重和 将多个发射权重向量的子集的列表发送到发射装置，以及通过功率加权对数据流进行加权，并且利用多个发射权重向量的子集对数据流进行波束形成。

公开(公告)号：US20080080463A1

公开(公告)日：2008-04-03

申请号：US11542287

申请日：2006-10-02

申请人： Kenneth A. Stewart ,  Brian K. Classon ,  Ravi Kuchibhotla ,  Robert T. Love ,  Kevin Baum

发明人： Kenneth A. Stewart ,  Brian K. Classon ,  Ravi Kuchibhotla ,  Robert T. Love ,  Kevin Baum

IPC分类号： H04B7/216

CPC分类号： H04W56/0035 ,  H04B1/70735 ,  H04B2201/70702 ,  H04J11/0069 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/2675

摘要： A method (400, 500) and apparatus for synchronization for a wireless communication device (300) using multiple synchronization channels. An initial cell search can be performed (420) by the wireless communication device (300). During the initial cell search, a primary synchronization symbol can be acquired (430) only on a center synchronization channel of a plurality of synchronization channels. The plurality of synchronization channels can include the center synchronization channel and a plurality of secondary synchronization channels. The primary synchronization symbol can be associated with the plurality of secondary synchronization channels. A frequency translation can be executed (460) to change a receive channel to acquire one of the secondary synchronization channels.

摘要翻译： 一种用于使用多个同步信道的无线通信设备（300）同步的方法（400,500）。 可以由无线通信设备（300）执行初始小区搜索（420）。 在初始小区搜索期间，只能在多个同步信道的中心同步信道上获取（430）主要同步符号。 多个同步信道可以包括中心同步信道和多个次同步信道。 主同步符号可以与多个次同步信道相关联。 可以执行频率转换（460）以改变接收频道以获取次同步信道之一。

公开(公告)号：US20070183362A1

公开(公告)日：2007-08-09

申请号：US11275938

申请日：2006-02-06

申请人： Bishwarup Mondal ,  Xiangyang Zhuang ,  Kevin Baum ,  Timothy Thomas ,  Frederick Vook

发明人： Bishwarup Mondal ,  Xiangyang Zhuang ,  Kevin Baum ,  Timothy Thomas ,  Frederick Vook

IPC分类号： H04Q7/00

CPC分类号： H04B7/0617 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639 ,  Y02D70/444

摘要： A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the channel subspace except that the null subspace information directs a base station to the matrix in a predefined codebook that results in minimum power being received at the node. The null subspace for each node is taken into consideration when communicating with a particular node.

摘要翻译： 本文提供了一种在通信系统内执行空分多址的方法和装置。 在运行期间，节点将返回空子空间信息及其信道子空间信息。 空子空间类似于信道子空间，除了空子信息将基站指向预定码本中的矩阵，导致节点接收的最小功率。 当与特定节点进行通信时，将考虑每个节点的空子空间。

公开(公告)号：US07027527B2

公开(公告)日：2006-04-11

申请号：US10309985

申请日：2002-12-04

申请人： Thomas Krauss ,  Sandeep Mukthavaram ,  Kevin Baum

发明人： Thomas Krauss ,  Sandeep Mukthavaram ,  Kevin Baum

IPC分类号： H03K9/00

CPC分类号： H04L1/20 ,  H04L1/0023 ,  H04L25/0216 ,  H04L27/2605

摘要： A method for detecting a presence of an excess delay spread within a received signal is provided. First, a quantitative estimation of a similarity of two segments of the received signal is performed. Thereafter, the presence of the excess delay spread within the received signal based upon the quantitative estimation is determined. In determining the presence of an excess delay spread, the quantitative estimation can be compared to a detection threshold.

摘要翻译： 提供一种用于检测在接收信号内存在超出延迟扩展的方法。 首先，对接收到的信号的两个段的相似度进行定量估计。 此后，确定基于定量估计在接收信号内扩展的超出延迟的存在。 在确定超出延迟扩展的存在时，可将定量估计与检测阈值进行比较。

公开(公告)号：US20060039451A1

公开(公告)日：2006-02-23

申请号：US11109412

申请日：2005-04-19

申请人： Xiangyang Zhuang ,  Kevin Baum

发明人： Xiangyang Zhuang ,  Kevin Baum

IPC分类号： H04L27/30

CPC分类号： H04L27/261 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2614

摘要： A method and apparatus for identifying a base station is provided herein. Particularly, a received reference sequence comprising a GCL-based sequence is analyzed to determine an index of the GCL-based sequence. The index of the GCL-based sequence is then mapped to a base station identity.

摘要翻译： 本文提供了一种用于识别基站的方法和装置。 特别地，分析包含基于GCL的序列的接收参考序列，以确定基于GCL的序列的索引。 然后将基于GCL的序列的索引映射到基站标识。

公开(公告)号：US20060035643A1

公开(公告)日：2006-02-16

申请号：US11004262

申请日：2004-12-03

申请人： Frederick Vook ,  Xiangyang Zhuang ,  Kevin Baum ,  Timothy Thomas

发明人： Frederick Vook ,  Xiangyang Zhuang ,  Kevin Baum ,  Timothy Thomas

IPC分类号： H04Q7/20

CPC分类号： H04L5/0094 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0051 ,  H04L25/0226 ,  H04L25/03343 ,  H04L27/2613 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03796 ,  H04L2025/03815 ,  H04W72/04

摘要： In a wireless communication system, a method and apparatus for closed loop transmission is disclosed. In accordance with the preferred embodiment of the present invention, a time frequency portion of an uplink frame is dynamically reserved as a sounding zone for uplink channel sounding. A first message is transmitted to a first subscriber station in a downlink frame assigning a time-frequency resource within the sounding zone, and a sounding waveform. Furthermore, a signal is received from the subscriber station within the assigned time-frequency resource, a partial channel response is determined from the received sounding signal, and the subsequent transmission to the subscriber station is tailored based on the at least partial channel response.

公开(公告)号：US5802044A

公开(公告)日：1998-09-01

申请号：US639155

申请日：1996-04-26

申请人： Kevin Baum ,  James Robert Kelton ,  Phillip David Rasky

发明人： Kevin Baum ,  James Robert Kelton ,  Phillip David Rasky

IPC分类号： H04J3/06 ,  H04J3/16

CPC分类号： H04W56/0005 ,  H04J3/0682

摘要： The present invention provides a communication system, device and method of reverse link symbol timing synchronization of transmited signals to facilitate reverse link timing synchronization. A base unit transmits a forward link signal, receives a reverse link signal, and determines a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a multicarrier subscriber unit to facilitate reverse link symbol timing synchronization. A plurality of multicarrier subscriber units receive a forward link signal and transmit a reverse link symbol timing synchronization burst on a reverse link timing synchronization channel wherein the reverse link timing synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by each subscriber unit, and adjusts a timing reference for transmitting signals to facilitate reverse link timing synchronization.

摘要翻译： 本发明提供了一种用于传输信号的反向链路符号定时同步的通信系统，装置和方法，以便于反向链路定时同步。 基站单元发送前向链路信号，接收反向链路信号，并且确定在反向链路定时同步信道上接收的信号的定时偏移，其中反向链路同步信道包括多个相邻的反向链路载波频率， 多载波用户单元，以便于反向链路符号定时同步。 多个多载波用户单元接收前向链路信号并在反向链路定时同步信道上发送反向链路符号定时同步脉冲串，其中反向链路定时同步信道包括由每个用户单元利用的多个相邻的反向链路载波频率 并且调整用于发送信号的定时参考以便于反向链路定时同步。