专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08867570B2 Methods of transmitting pilot tones and data in spatial multiplexing transmission 有权
标题翻译：在空间复用传输中发送导频音和数据的方法
公开(公告)号：US08867570B2
公开(公告)日：2014-10-21
申请号：US11823692
申请日：2007-06-28
申请人： Sriram Mudulodu , Rajesh Raja Manakkal , Sam P. Alex , Louay Jalloul
发明人： Sriram Mudulodu , Rajesh Raja Manakkal , Sam P. Alex , Louay Jalloul
IPC分类号： H04B3/10 , H04B7/04 , H04L5/00 , H04B7/06 , H04W52/32 , H04L27/26
CPC分类号： H04B7/0452 , H04B7/068 , H04L5/0023 , H04L5/0037 , H04L5/0042 , H04L5/005 , H04L5/0051 , H04L27/2657 , H04W52/325
摘要： A method and apparatus of transmitting pilot tones and data in multi-carrier spatial multiplexing transmission is disclosed. The method includes a plurality of subscribers transmitting data to a base station through common frequency sub-carrier and symbol time tiles. Each of the multiple subscribers rotating frequency sub-carrier and symbol time locations of pilot tones within the frequency sub-carrier and symbol time tiles.
摘要翻译：公开了一种在多载波空间复用传输中发送导频音和数据的方法和装置。该方法包括多个用户通过公共频率子载波和符号时间块向基站发送数据。多个用户中的每一个在频率子载波和符号时间瓦片内旋转导频音调的频率子载波和符号时间位置。

2. 发明申请

US20100009689A1 Method and apparatus for managing uplink communication in wireless communication network 有权
标题翻译：用于管理无线通信网络中的上行链路通信的方法和装置
公开(公告)号：US20100009689A1
公开(公告)日：2010-01-14
申请号：US12459912
申请日：2009-07-09
申请人： Louay Jalloul , Sriram Mudulodu , Sam P. Alex , Leena Zacharias , Bertrand Hochwald
发明人： Louay Jalloul , Sriram Mudulodu , Sam P. Alex , Leena Zacharias , Bertrand Hochwald
IPC分类号： H04W72/00
CPC分类号： H04W72/085 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0021 , H04W24/00 , H04W28/18
摘要： A method for managing uplink communication in wireless communication network is provided. The method includes selecting one or more Mobile Stations (MSs) from a plurality of MSs based on a first signal parameter corresponding to each MS of the one or more MSs, one or more second signal parameters corresponding to each MS of the one or more MSs, and one or more threshold parameters. The first signal parameter is associated with a Base Station (BS) serving a MS. Further, the one or more second signal parameters are associated with one or more BSs neighboring to the MS. The one or more threshold parameters are associated with a communication parameter. Thereafter, the method includes modifying uplink Modulation and Coding Scheme (MCS) level of the one or more MSs.
摘要翻译：提供了一种在无线通信网络中管理上行链路通信的方法。该方法包括基于与一个或多个MS的每个MS对应的第一信号参数从多个MS中选择一个或多个移动站（MS），对应于一个或多个MS的每个MS的一个或多个第二信号参数，以及一个或多个阈值参数。第一信号参数与服务于MS的基站（BS）相关联。此外，一个或多个第二信号参数与与MS相邻的一个或多个BS相关联。一个或多个阈值参数与通信参数相关联。此后，该方法包括修改一个或多个MS的上行链路调制和编码方案（MCS）级别。

3. 发明申请

US20080273453A1 Methods and systems for channel estimation in a collaborative Multi Input Multiple Output (MIMO) communication system 失效
标题翻译：协作多输入多输出（MIMO）通信系统中信道估计的方法和系统
公开(公告)号：US20080273453A1
公开(公告)日：2008-11-06
申请号：US11823763
申请日：2007-06-28
申请人： Rajesh Raja Manakkal , Sam P. Alex , Louay Jalloul
发明人： Rajesh Raja Manakkal , Sam P. Alex , Louay Jalloul
IPC分类号： H04J11/00 , H04B7/02 , H04B7/216
CPC分类号： H04B7/0697 , H04B7/04 , H04L25/0204 , H04L25/022 , H04L25/0224
摘要： Methods and systems for estimating channel of one or more MSs in a collaborative MIMO communication system are provided. The method includes receiving a signal transmitted from a transmit antenna of a first MS and a transmit antenna of a second MS at a BTS using one or more receiver antennas. The method further includes computing one or more conjugate products for each of the first MS and the second MS using the signal. Thereafter, an average is determined over the plurality of receiver antennas and the plurality of tiles of the plurality of conjugate products for each of the first MS and the second MS. A phase determined based on the average of the plurality of conjugate products for the first MS and the second MS is divided into a first phase and a second phase for each of the first MS and the second MS. Additionally, the method includes determining a channel estimate for each tile of the first MS and the second MS at each receiver antennas. The method further includes performing predefined computations on the channel estimate of each tile of the first MS and the second MS at each receiver antenna of the BTS using the corresponding first phase and the corresponding second phase.
摘要翻译：提供了用于估计协作MIMO通信系统中的一个或多个MS的信道的方法和系统。该方法包括使用一个或多个接收机天线在BTS处接收从第一MS的发射天线和第二MS的发射天线发射的信号。该方法还包括使用该信号来计算第一MS和第二MS中的每一个的一个或多个共轭乘积。此后，对于第一MS和第二MS中的每一个，确定多个接收机天线和多个共轭乘积中的多个瓦片的平均值。基于第一MS和第二MS的多个共轭乘积的平均值确定的相位被分成第一MS和第二MS中的每一个的第一相位和第二相位。另外，该方法包括在每个接收机天线处确定第一MS和第二MS的每个瓦片的信道估计。该方法还包括使用对应的第一阶段和对应的第二阶段，在BTS的每个接收机天线对第一MS和第二MS的每个频块的信道估计执行预定义的计算。

4. 发明授权

US08204527B2 Subscriber station transceiver allocation of groups of subcarriers between a plurality of transceiver antennas 有权
标题翻译：订户站收发机分配多个收发天线之间的子载波组
公开(公告)号：US08204527B2
公开(公告)日：2012-06-19
申请号：US12567217
申请日：2009-09-25
申请人： Sam P. Alex , Louay Jalloul , Robert G. Lorenz
发明人： Sam P. Alex , Louay Jalloul , Robert G. Lorenz
IPC分类号： H04B7/00
CPC分类号： H04W72/0453 , H04B7/0671 , H04L5/0023 , H04L5/0044 , H04L5/0048 , H04L5/006
摘要： Embodiments for at least one method and apparatus of a subscriber station transceiver allocating and transmitting groups of subcarriers between a plurality of transceiver antennas are disclosed. One method includes the subscriber station transceiver receiving at least one downlink signal through each of the plurality of subscriber station antennas. The subscriber station transceiver characterizes a received signal of the at least one downlink signal over multiple subcarriers. The subscriber station transceiver allocates groups of subcarriers for uplink transmission through each of the plurality of subscriber antennas, wherein the allocation is based on the characterized received signal of the at least one downlink signal over multiple subcarriers.
摘要翻译：公开了用于在多个收发天线之间分配和发送子载波组的用户站收发机的至少一种方法和装置的实施例。一种方法包括订户站收发机通过多个用户台天线中的每一个接收至少一个下行链路信号。订户站收发机通过多个子载波来表征至少一个下行链路信号的接收信号。订户站收发机通过多个用户天线中的每一个分配用于上行链路传输的子载波组，其中，所述分配基于多个子载波上的至少一个下行链路信号的表征的接收信号。

5. 发明申请

US20110064154A1 Methods and Systems For Performing Channel Estimation In A Wireless Communication System 审中-公开
标题翻译：用于在无线通信系统中执行信道估计的方法和系统
公开(公告)号：US20110064154A1
公开(公告)日：2011-03-17
申请号：US12951236
申请日：2010-11-22
申请人： Sriram Mudulodu , Sam P. Alex , Louay Jalloul
发明人： Sriram Mudulodu , Sam P. Alex , Louay Jalloul
IPC分类号： H04L27/28
CPC分类号： H04L25/0212 , H04L25/0224
摘要： The invention provides methods and systems for channel estimation. A method comprises receiving a plurality of signal frames, comprising at least a first zone and a second zone, from a plurality of base stations in the wireless communication system. Two or more first delay profiles corresponding to two or more base stations are determined using the first zone. The method further comprising detecting at least one aliased tap in a time domain channel response of the second zone using the two or more first delay profiles. Another method comprises receiving a signal frame, comprising at least a preamble symbol and a data part, from a base station. A first delay profile corresponding to the preamble symbol is determined and a second delay profile corresponding to the data part is obtained. The first delay profile is analyzed in conjunction with the second delay profile to detect one or more aliased taps in a time domain channel response of the data part. The detected one or more aliased taps are nulled/rectified.
摘要翻译：本发明提供了用于信道估计的方法和系统。一种方法包括从无线通信系统中的多个基站接收包括至少第一区域和第二区域的多个信号帧。使用第一区确定对应于两个或多个基站的两个或多个第一延迟分布。该方法还包括使用两个或更多个第一延迟分布来检测第二区域的时域信道响应中的至少一个混叠抽头。另一种方法包括从基站接收包括至少前同步码符号和数据部分的信号帧。确定对应于前导符号的第一延迟分布，并且获得与数据部分对应的第二延迟分布。第一延迟分布结合第二延迟分布来分析，以在数据部分的时域信道响应中检测一个或多个混叠抽头。检测到的一个或多个别名抽头被归零/纠正。

6. 发明申请

US20090247091A1 Selecting receiver chains of a mobile unit for receiving wireless signals 有权
标题翻译：选择用于接收无线信号的移动单元的接收机链
公开(公告)号：US20090247091A1
公开(公告)日：2009-10-01
申请号：US12079404
申请日：2008-03-26
申请人： Louay Jalloul , Sam P. Alex , Soumen Chakraborty , Sindhu Verma , Manish Airy , Anuj Puri
发明人： Louay Jalloul , Sam P. Alex , Soumen Chakraborty , Sindhu Verma , Manish Airy , Anuj Puri
IPC分类号： H04B7/26 , H04B1/18
CPC分类号： H04W24/00 , H04W24/10 , H04W48/18 , H04W88/06
摘要： A method and apparatus of selecting which of a plurality of receiver chains of a mobile unit to receive wireless signals, is disclosed. One method includes measuring a first receive signal quality while all of the plurality of receiver chains are receiving wireless signals, and measuring a second receive signal quality while a subset of the plurality of receiver chains are receiving wireless signals. The subset of the plurality of receiver chains are selected to receive wireless signal unless the first receive signal quality is a threshold better than the second receive signal quality. If the first receive signal quality is a threshold better than the second receive signal quality then all the plurality of receiver chains are selected to receive wireless signals.
摘要翻译：公开了一种选择移动单元的多个接收机链中的哪一个接收无线信号的方法和装置。一种方法包括测量第一接收信号质量，同时所有多个接收机链都在接收无线信号，并且在多个接收机链的子集正在接收无线信号的同时测量第二接收信号质量。选择多个接收机链的子集以接收无线信号，除非第一接收信号质量是比第二接收信号质量好的阈值。如果第一接收信号质量是比第二接收信号质量好的阈值，则选择所有多个接收机链以接收无线信号。

7. 发明申请

US20080273621A1 Method and apparatus for estimating frequency offset and timing offset of one or more mobile stations (MSs) 有权
标题翻译：用于估计一个或多个移动站（MS）的频率偏移和定时偏移的方法和装置
公开(公告)号：US20080273621A1
公开(公告)日：2008-11-06
申请号：US12004570
申请日：2007-12-21
申请人： Rajesh Raja Manakkal , Louay Jalloul , Sam P. Alex , Anupama Lakshmanan , Diordje Tujkovic , Sriram Mudulodu
发明人： Rajesh Raja Manakkal , Louay Jalloul , Sam P. Alex , Anupama Lakshmanan , Diordje Tujkovic , Sriram Mudulodu
IPC分类号： H04B7/02
CPC分类号： H04L27/2662 , H04L5/0007 , H04L5/0051 , H04L27/2657 , H04L27/2675
摘要： A method and apparatus for estimating frequency offset and timing offset of a first Mobile Station (MS) in a communication system is provided. The method includes receiving a composite signal at a plurality of receiver antennas of a Base Transceiver Station (BTS). The composite signal includes a first signal transmitted from a first MS and a second signal transmitted from a second MS. The composite signal includes one or more tiles. Each tile includes a plurality of data sub-carriers, a plurality of first pilot sub-carriers, and a plurality of second pilot sub-carriers. A total phase offset of the first MS is estimated based on a complex conjugate product of pilot symbols of the plurality of first pilot sub-carriers. Thereafter, a first phase offset corresponding to the timing offset of the first MS is estimated based on a Power Delay Profile (PDP) of one or more first pilot sub-carriers. Finally, a second phase offset corresponding to the frequency offset of the first MS is determined based on the total phase offset and the first phase offset.
摘要翻译：提供了一种用于估计通信系统中的第一移动站（MS）的频率偏移和定时偏移的方法和装置。该方法包括在基站收发台（BTS）的多个接收机天线处接收复合信号。复合信号包括从第一MS发送的第一信号和从第二MS发送的第二信号。复合信号包括一个或多个瓦片。每个瓦片包括多个数据副载波，多个第一导频子载波和多个第二导频子载波。基于多个第一导频子载波的导频符号的复共轭乘积来估计第一MS的总相位偏移。此后，基于一个或多个第一导频子载波的功率延迟曲线（PDP）来估计与第一MS的定时偏移相对应的第一相位偏移。最后，基于总相位偏移和第一相位偏移来确定与第一MS的频率偏移相对应的第二相位偏移。

8. 发明授权

US09026123B2 Method and apparatus for managing uplink communication in wireless communication network 有权
标题翻译：用于管理无线通信网络中的上行链路通信的方法和装置
公开(公告)号：US09026123B2
公开(公告)日：2015-05-05
申请号：US12459912
申请日：2009-07-09
申请人： Louay Jalloul , Sriram Mudulodu , Sam P. Alex , Leena Zacharias , Bertrand Hochwald
发明人： Louay Jalloul , Sriram Mudulodu , Sam P. Alex , Leena Zacharias , Bertrand Hochwald
IPC分类号： H04W72/00 , H04L1/00 , H04W24/00 , H04W28/18
CPC分类号： H04W72/085 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0021 , H04W24/00 , H04W28/18
摘要： A method for managing uplink communication in wireless communication network is provided. The method includes selecting one or more Mobile Stations (MSs) from a plurality of MSs based on a first signal parameter corresponding to each MS of the one or more MSs, one or more second signal parameters corresponding to each MS of the one or more MSs, and one or more threshold parameters. The first signal parameter is associated with a Base Station (BS) serving a MS. Further, the one or more second signal parameters are associated with one or more BSs neighboring to the MS. The one or more threshold parameters are associated with a communication parameter. Thereafter, the method includes modifying uplink Modulation and Coding Scheme (MCS) level of the one or more MSs.
摘要翻译：提供了一种在无线通信网络中管理上行链路通信的方法。该方法包括基于与一个或多个MS的每个MS对应的第一信号参数从多个MS中选择一个或多个移动站（MS），对应于一个或多个MS的每个MS的一个或多个第二信号参数，以及一个或多个阈值参数。第一信号参数与服务于MS的基站（BS）相关联。此外，一个或多个第二信号参数与与MS相邻的一个或多个BS相关联。一个或多个阈值参数与通信参数相关联。此后，该方法包括修改一个或多个MS的上行链路调制和编码方案（MCS）级别。

9. 发明授权

US08515476B2 Subscriber station transceiver allocation of groups of subcarriers between a plurality of transceiver antennas 有权
标题翻译：订户站收发机分配多个收发天线之间的子载波组
公开(公告)号：US08515476B2
公开(公告)日：2013-08-20
申请号：US13526100
申请日：2012-06-18
申请人： Sam P. Alex , Louay Jalloul , Robert Lorenz
发明人： Sam P. Alex , Louay Jalloul , Robert Lorenz
IPC分类号： H04B7/00
CPC分类号： H04W72/0453 , H04B7/0671 , H04L5/0023 , H04L5/0044 , H04L5/0048 , H04L5/006
摘要： Embodiments for at least one method and apparatus of a subscriber station transceiver allocating and transmitting groups of subcarriers between a plurality of transceiver antennas are disclosed. One method includes the subscriber station transceiver receiving at least one downlink signal through each of the plurality of subscriber station antennas. The subscriber station transceiver characterizes a received signal of the at least one downlink signal over multiple subcarriers. The subscriber station transceiver allocates groups of subcarriers for uplink transmission through each of the plurality of subscriber antennas, wherein the allocation is based on the characterized received signal of the at least one downlink signal over multiple subcarriers.
摘要翻译：公开了用于在多个收发天线之间分配和发送子载波组的用户站收发机的至少一种方法和装置的实施例。一种方法包括订户站收发机通过多个用户台天线中的每一个接收至少一个下行链路信号。订户站收发机通过多个子载波来表征至少一个下行链路信号的接收信号。订户站收发机通过多个用户天线中的每一个分配用于上行链路传输的子载波组，其中，所述分配基于多个子载波上的至少一个下行链路信号的表征的接收信号。

10. 发明申请

US20100081467A1 Subscriber Station Transceiver Allocation of Groups of Subcarriers Between a Plurality of Transceiver Antennas 有权
标题翻译：用户站收发器在多个收发天线之间分配子载波组
公开(公告)号：US20100081467A1
公开(公告)日：2010-04-01
申请号：US12567217
申请日：2009-09-25
申请人： Sam P. Alex , Louay Jalloul , Robert G. Lorenz
发明人： Sam P. Alex , Louay Jalloul , Robert G. Lorenz
IPC分类号： H04B7/00
CPC分类号： H04W72/0453 , H04B7/0671 , H04L5/0023 , H04L5/0044 , H04L5/0048 , H04L5/006
摘要： Embodiments for at least one method and apparatus of a subscriber station transceiver allocating and transmitting groups of subcarriers between a plurality of transceiver antennas are disclosed. One method includes the subscriber station transceiver receiving at least one downlink signal through each of the plurality of subscriber station antennas. The subscriber station transceiver characterizes a received signal of the at least one downlink signal over multiple subcarriers. The subscriber station transceiver allocates groups of subcarriers for uplink transmission through each of the plurality of subscriber antennas, wherein the allocation is based on the characterized received signal of the at least one downlink signal over multiple subcarriers.
摘要翻译：公开了用于在多个收发天线之间分配和发送子载波组的用户站收发机的至少一种方法和装置的实施例。一种方法包括订户站收发机通过多个用户台天线中的每一个接收至少一个下行链路信号。订户站收发机通过多个子载波来表征至少一个下行链路信号的接收信号。订户站收发机通过多个用户天线中的每一个分配用于上行链路传输的子载波组，其中，所述分配基于多个子载波上的至少一个下行链路信号的表征的接收信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式