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公开(公告)号：US06668030B2
公开(公告)日：2003-12-23
申请号：US09848504
申请日：2001-05-03
IPC分类号： H04B110
CPC分类号： H04L1/20 , H04B7/005 , H04L1/06 , H04L2025/03566 , H04L2025/03726
摘要： A mobile telephone system includes a base station which establishes a link with a selected mobile station. The received signal from the mobile station will include a noise component as well as a possible interference component from another mobile station operating at the same frequency in another cell. The base station has a trellis based equalization system which operates on the assumption that the received signal includes components which have a predominantly Gaussian characteristic. A switch controller determines when the interference component (which is non-gaussian) in the received signal becomes a dominant component and operates to switch a spatio-temporal filter into the circuit instead of the trellis based equalization system, to improve the bit error rate performance.
摘要翻译： 移动电话系统包括与所选择的移动站建立链接的基站。 来自移动台的接收信号将包括噪声分量以及来自在另一小区中以相同频率工作的另一移动站的可能干扰分量。 基站具有基于网格的均衡系统，其基于接收信号包括具有主要高斯特性的分量来运行。 开关控制器确定接收信号中的干扰分量（其是非高斯）何时成为主要分量并且操作以将时空滤波器切换到电路而不是基于网格的均衡系统，以提高误码率性能 。
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2.发明授权Method and apparatus for collision resolution in a delay-critical radio telecommunications system 失效延迟关键无线电通信系统中冲突解决的方法和装置公开(公告)号：US06895039B2
公开(公告)日：2005-05-17
申请号：US09782423
申请日：2001-02-13
IPC分类号： H04B7/005 , H04B7/26 , H04L1/00 , H04L1/06 , H04L12/56 , H04W28/04 , H04W74/08 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04L1/0061 , H04L1/0045 , H04L1/0059 , H04L1/06
摘要： In a PRACH channel, colliding signals are resolved by use of a number of training-like symbols in the colliding data payloads. The signals are estimated by spatio temporal filters running a training-based or semi-blind algorithm, and a selection criterion is applied to the estimated signals, such as distance from the finite alphabet or the mean square error.
摘要翻译： 在PRACH信道中，通过在冲突数据有效载荷中使用若干训练样符号来解决冲突信号。 通过运行基于训练或半盲算法的时空滤波器估计信号，并且将选择标准应用于估计信号，例如距有限字母表的距离或均方误差。
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公开(公告)号：US06697351B1
公开(公告)日：2004-02-24
申请号：US09704484
申请日：2000-11-02
IPC分类号： H04J300
CPC分类号： H04L1/06 , H04B7/005 , H04L25/03012
摘要： In a radio telecommunications system such as GSM or EDGE, at each timeslot a small number of information symbols in narrow bands of the data payloads adjacent each tail of the timeslot are used as training-like symbols; for each burst, the end of the timeslot more affected by asynchronous CCI is sensed, and the training-like symbols at that end are processed, together with conventional midamble training symbols and tails symbols, by a CCI rejection algorithm.
摘要翻译： 在诸如GSM或EDGE的无线电电信系统中，在每个时隙处，与时隙的每个尾部相邻的数据有效载荷的窄带中的少量信息符号用作训练样符号; 对于每个突发，感测到更多受异步CCI影响的时隙的结束，并且通过CCI拒绝算法将该端处的训练样符号与传统的中继训练符号和尾符号进行一起处理。
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4.发明授权Increasing the range of access point cells for a given throughput in a downlink of a wireless local area network 有权在无线局域网的下行链路中增加给定吞吐量的接入点小区的范围公开(公告)号：US07599714B2
公开(公告)日：2009-10-06
申请号：US11241896
申请日：2005-09-30
申请人： Alexandr Kuzminskiy
发明人： Alexandr Kuzminskiy
IPC分类号： H04M1/00
CPC分类号： H04B7/0691 , H04B7/0617
摘要： The present invention provides a method and an apparatus may increase or extend the range of wireless communication cells for a given throughput in a downlink of a wireless communication system. When transmitting data in a downlink of a plurality of access point cells in a wireless local area network (WLAN), the range of the downlink may be increased for a given throughput under one or more radiated power constraints. The method includes providing a plurality of antennas at an access point to transmit the data to a wireless unit under at least one of a first and a second radiated power constraints. The method further includes using the plurality of antennas for beamforming over a group of sub-carriers subject to the first and/or second radiated power constraints. Under one or more radiated power constraints, a multiple antenna based beamforming may extend the range of a wireless communication for a user of a wireless unit that may be located within a coverage area across the plurality of access point cells of a Wi-Fi network associated with the WLAN. A joint beamforming optimized over all of sub-carriers may account for a European regulation restriction into at least one of an averaged and a spectral density Equivalent Isotropic Radiated Power (EIRP) constraint. In this way, an Orthogonal Frequency-Division Multiplexing (OFDM) based joint beamformer may provide a significant performance improvement and range extension.
摘要翻译： 本发明提供一种方法和装置可以在无线通信系统的下行链路中为给定吞吐量增加或扩展无线通信小区的范围。 当在无线局域网（WLAN）中的多个接入点小区的下行链路中发送数据时，在一个或多个辐射功率约束下，可以针对给定的吞吐量增加下行链路的范围。 该方法包括在接入点处提供多个天线以在第一和第二辐射功率约束中的至少一个下将数据发射到无线单元。 该方法还包括：经过第一和/或第二辐射功率约束，在多个子载波组上使用多个天线进行波束形成。 在一个或多个辐射功率约束下，基于多天线的波束成形可以扩展无线单元的用户的无线通信的范围，所述无线单元的用户可以位于跨越Wi-Fi网络相关联的多个接入点小区的覆盖区域内 与WLAN。 在所有子载波上优化的联合波束成形可以将欧洲限制限制为平均和频谱密度等效各向同性辐射功率（EIRP）约束中的至少一个。 以这种方式，基于正交频分复用（OFDM）的联合波束形成器可以提供显着的性能改进和范围扩展。
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5.发明申请Increasing the range of access point cells for a given throughput in a downlink of a wireless local area network 有权在无线局域网的下行链路中增加给定吞吐量的接入点小区的范围公开(公告)号：US20070077968A1
公开(公告)日：2007-04-05
申请号：US11241896
申请日：2005-09-30
申请人： Alexandr Kuzminskiy
发明人： Alexandr Kuzminskiy
IPC分类号： H04M1/00
CPC分类号： H04B7/0691 , H04B7/0617
摘要： The present invention provides a method and an apparatus may increase or extend the range of wireless communication cells for a given throughput in a downlink of a wireless communication system. When transmitting data in a downlink of a plurality of access point cells in a wireless local area network (WLAN), the range of the downlink may be increased for a given throughput under one or more radiated power constraints. The method includes providing a plurality of antennas at an access point to transmit the data to a wireless unit under at least one of a first and a second radiated power constraints. The method further includes using the plurality of antennas for bearnforming over a group of sub-carriers subject to the first and/or second radiated power constraints. Under one or more radiated power constraints, a multiple antenna based beamforming may extend the range of a wireless communication for a user of a wireless unit that may be located within a coverage area across the plurality of access point cells of a Wi-Fi network associated with the WLAN. A joint beamforming optimized over all of sub-carriers may account for a European regulation restriction into at least one of an averaged and a spectral density Equivalent Isotropic Radiated Power (EIRP) constraint. In this way, an Orthogonal Frequency-Division Multiplexing (OFDM) based joint beamformer may provide a significant performance improvement and range extension.
摘要翻译： 本发明提供一种方法和装置可以在无线通信系统的下行链路中为给定吞吐量增加或扩展无线通信小区的范围。 当在无线局域网（WLAN）中的多个接入点小区的下行链路中发送数据时，在一个或多个辐射功率约束下，可以针对给定的吞吐量增加下行链路的范围。 该方法包括在接入点处提供多个天线以在第一和第二辐射功率约束中的至少一个下将数据发射到无线单元。 该方法还包括在经受第一和/或第二辐射功率约束的一组子载波上使用多个天线进行波束成形。 在一个或多个辐射功率约束下，基于多天线的波束成形可以扩展无线单元的用户的无线通信的范围，所述无线单元的用户可以位于跨越Wi-Fi网络相关联的多个接入点小区的覆盖区域内 与WLAN。 在所有子载波上优化的联合波束成形可以将欧洲限制限制为平均和频谱密度等效各向同性辐射功率（EIRP）约束中的至少一个。 以这种方式，基于正交频分复用（OFDM）的联合波束形成器可以提供显着的性能改进和范围扩展。
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6.发明授权Receiver of digital data bursts comprising an antenna array, and a method of receiving 有权包括天线阵列的数字数据突发的接收机和接收的方法公开(公告)号：US07391830B2
公开(公告)日：2008-06-24
申请号：US10669786
申请日：2003-09-24
IPC分类号： H04B7/10
CPC分类号： H04L25/03038 , H04B7/082 , H04L1/06 , H04L2025/03726
摘要： A receiver of digital data bursts is provided comprising an antenna array, a first space time filter having filter coefficients initialized by estimation over just training data in a received burst and providing symbol estimates and a second space time filter having filter coefficients initialized by estimation over the received burst and providing symbol estimates. In use at least one pass to determine a symbol estimate in the received burst is undertaken by each space time filter and a selector operates to determine which of the first and second filters provides the symbol estimate closer to an expected value.
摘要翻译： 提供数字数据突发的接收机，其包括天线阵列，第一空间时间滤波器，其具有通过仅接收脉冲串中的训练数据的估计而初始化的滤波器系数，并且提供符号估计，以及具有通过估计的初始化滤波器系数的第二空间时间滤波器 接收到突发并提供符号估计。 在使用中，由每个空间时间滤波器进行确定接收到的脉冲串中的符号估计的至少一个通过，并且选择器操作以确定第一和第二滤波器中的哪一个提供更接近期望值的符号估计。
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7.发明授权Communicating data between an access point and multiple wireless devices over a link 有权通过链接在接入点和多个无线设备之间通信数据公开(公告)号：US07512096B2
公开(公告)日：2009-03-31
申请号：US10996617
申请日：2004-11-24
IPC分类号： H04Q7/24
CPC分类号： H04L1/1692 , H04B7/0408 , H04W16/28 , H04W80/00 , H04W84/12
摘要： The present invention provides a method and an apparatus for communicating data over a network between a communication node, for example, an access point having a first and a second antenna and a first and a second mobile station. The method comprises weighting a first data at the access point to transmit the first data using the first and second antennas so that the first mobile station only receives the first data and weighting a second data at the access point to transmit the second data using the first and second antennas so that the second mobile station only receives the second data. A space division multiple access (SDMA) module may cause a transmission protocol to transmit the first data to the first mobile station on the downlink and transmit the second data to the second mobile station in parallel to the transmission of the first data on the downlink. In a telecommunication system, this substantially simultaneous transmission of the first and second data using a similar carrier frequency in a radio frequency communication over a wireless local area network (WLAN) may increase throughput of a downlink, for example, by a factor nominally equal to the number of antennas at an access point.
摘要翻译： 本发明提供了一种用于在通信节点（例如具有第一和第二天线的接入点）与第一和第二移动台之间的网络上传送数据的方法和装置。 该方法包括对接入点处的第一数据进行加权，以使用第一和第二天线发送第一数据，使得第一移动站仅接收第一数据，并且在接入点加权第二数据以使用第一数据发送第二数据 和第二天线，使得第二移动台仅接收第二数据。 空分多址（SDMA）模块可以使传输协议在下行链路上将第一数据发送到第一移动台，并且在下行链路上与第一数据的发送并行发送第二数据到第二移动站。 在电信系统中，在无线局域网（WLAN）的射频通信中使用类似的载波频率实质上同时传输第一和第二数据可以增加下行链路的吞吐量，例如通过一个等于 在接入点的天线数量。
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公开(公告)号：US20060109814A1
公开(公告)日：2006-05-25
申请号：US10996617
申请日：2004-11-24
申请人： Alexandr Kuzminskiy , Hamid Karimi , Kin Leung
发明人： Alexandr Kuzminskiy , Hamid Karimi , Kin Leung
CPC分类号： H04L1/1692 , H04B7/0408 , H04W16/28 , H04W80/00 , H04W84/12
摘要： The present invention provides a method and an apparatus for communicating data over a network between a communication node, for example, an access point having a first and a second antenna and a first and a second mobile station. The method comprises weighting a first data at the access point to transmit the first data using the first and second antennas so that the first mobile station only receives the first data and weighting a second data at the access point to transmit the second data using the first and second antennas so that the second mobile station only receives the second data. A space division multiple access (SDMA) module may cause a transmission protocol to transmit the first data to the first mobile station on the downlink and transmit the second data to the second mobile station in parallel to the transmission of the first data on the downlink. In a telecommunication system, this substantially simultaneous transmission of the first and second data using a similar carrier frequency in a radio frequency communication over a wireless local area network (WLAN) may increase throughput of a downlink, for example, by a factor nominally equal to the number of antennas at an access point.
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