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91. 发明授权

US07466759B2 Method and system for rate-2 transmission 有权
标题翻译：速率2传输的方法和系统
公开(公告)号：US07466759B2
公开(公告)日：2008-12-16
申请号：US11175430
申请日：2005-07-05
申请人： Shashidhar Vummintala , Arogyaswami Paulraj , Erik David Lindskog , Balaji Sundar Rajan , Djordje Tujkovic
发明人： Shashidhar Vummintala , Arogyaswami Paulraj , Erik David Lindskog , Balaji Sundar Rajan , Djordje Tujkovic
IPC分类号： H04B7/02
CPC分类号： H04L1/0625 , H04L1/0071 , H04L1/0643
摘要： The invention relates generally to the field of signal encoding in a multiple input multiple output system in a wireless communication network. This invention specifically relates to a method of encoding and transmitting symbols in a rate-2 complex symbol per second per Hertz transmission system that achieves a maximum diversity of four for a four transmit antenna system and a diversity of three on a three transmit antenna system. The invention discloses a method of interleaving the complex symbols such that each interleaved symbol comprises information of at least two complex symbols where the complex symbols obtain values from a rotated constellation.
摘要翻译：本发明一般涉及无线通信网络中的多输入多输出系统中的信号编码领域。本发明具体涉及以每Hertz传输系统每秒速率2复数符号编码和传输符号的方法，其对于四个发射天线系统实现四个最大分集，三个发射天线系统实现三分之一。本发明公开了一种对复数符号进行交织的方法，使得每个交错符号包括复数符号从旋转星座获得值的至少两个复符号的信息。

92. 发明申请

US20080285511A1 Scheduling and transmitting uplink packets within uplink sub-frames of a wireless system 有权
标题翻译：在无线系统的上行链路子帧内调度和发送上行链路分组
公开(公告)号：US20080285511A1
公开(公告)日：2008-11-20
申请号：US11804201
申请日：2007-05-17
申请人： Anuj Puri , Manish Airy , Amar Prakash Azad , Arogyaswami Paulraj
发明人： Anuj Puri , Manish Airy , Amar Prakash Azad , Arogyaswami Paulraj
IPC分类号： H04Q7/00 , H04Q7/30
CPC分类号： H04L5/0046 , H04L5/006 , H04L27/2626 , H04W28/06 , H04W72/1268
摘要： A method and apparatus of scheduling and transmitting uplink packets within uplink sub-frames of a wireless system is disclosed. The method includes determining a size of a standard data unit, and determining if the standard data unit can be transmitted within a single sub-channel of an uplink frame by comparing the size of the standard data unit with a number of bits that can be transmitted within the uplink frame as determined by an uplink quality. If the standard data unit is too large to be transmitted within a single sub-channel of an uplink frame, then the standard data unit is divided into sub-data units. The sub-data units are transmitted over multiple uplink frames.
摘要翻译：公开了一种在无线系统的上行链路子帧内调度和发送上行链路分组的方法和装置。该方法包括：确定标准数据单元的大小，以及通过将标准数据单元的大小与可传输的比特数进行比较来确定标准数据单元是否能够在上行链路帧的单个子信道内发送在上行链路帧内，由上行链路质量确定。如果标准数据单元太大而不能在上行链路帧的单个子信道内传输，则将标准数据单元划分为子数据单元。子数据单元通过多个上行链路帧传输。

93. 发明授权

US07450662B2 Method and system for maximum transmit diversity 有权
标题翻译：最大发射分集的方法和系统
公开(公告)号：US07450662B2
公开(公告)日：2008-11-11
申请号：US11175621
申请日：2005-07-05
申请人： Shashidhar Vummintala , Arogyaswami Paulraj , Erik David Lindskog , Balaji Sundar Rajan , Djordje Tujkovic
发明人： Shashidhar Vummintala , Arogyaswami Paulraj , Erik David Lindskog , Balaji Sundar Rajan , Djordje Tujkovic
IPC分类号： H04L27/00
CPC分类号： H04B7/0669 , H04B7/0671 , H04L1/0668 , H04L27/2602 , H04L27/34
摘要： The invention relates generally to the field of signal encoding in a multiple input multiple output system in a wireless communication network. This invention specifically relates to a method of encoding and transmitting symbols in a rate-1 complex symbol per second per Hertz transmission system while achieving maximum diversity. The invention discloses a method of interleaving the complex symbols such that each interleaved symbol comprises information of at least two complex symbols where the complex symbols obtain values from a rotated constellation.
摘要翻译：本发明一般涉及无线通信网络中的多输入多输出系统中的信号编码领域。本发明具体涉及一种在实现最大分集的同时以每秒Hertz传输系统每秒速率1复数符号中编码和传输符号的方法。本发明公开了一种对复数符号进行交织的方法，使得每个交错符号包括复数符号从旋转星座获得值的至少两个复符号的信息。

94. 发明授权

US07450657B2 Antenna virtualization in communication systems 有权
标题翻译：通信系统中的天线虚拟化
公开(公告)号：US07450657B2
公开(公告)日：2008-11-11
申请号：US11506318
申请日：2006-08-17
申请人： Arogyaswami Paulraj , Nicolae Chiurtu
发明人： Arogyaswami Paulraj , Nicolae Chiurtu
IPC分类号： H04B7/02
CPC分类号： H04B7/0671 , H04B7/0615 , H04B7/0682 , H04B7/10 , H04L27/2626
摘要： Communication systems and methods are described in which multiple transmit signals are generated from an input stream or signal. The communication systems and methods, collectively referred to as antenna virtualization or virtual antenna systems, generate from each input stream multiple transmit signals that when driven into multiple antennas create a radiation pattern that effectively appears to originate from a single antenna. The communications operations include receiving at least one input stream. Multiple transmit signals are generated from the received input stream; the number of transmit signals generated is greater than the number of received input streams. Generation of the transmit signals involves transforming the input stream. The transforming includes applying one or more of a variable delay, a phase shift, and signal shaping to information of the input stream. The transmit signals are transmitted by a separate antenna of an antenna system.
摘要翻译：描述了从输入流或信号生成多个发送信号的通信系统和方法。统称为天线虚拟化或虚拟天线系统的通信系统和方法从每个输入流产生多个发射信号，当被驱动到多个天线中时，产生有效地似乎源于单个天线的辐射图。通信操作包括接收至少一个输入流。从接收到的输入流生成多个发送信号; 生成的发送信号的数量大于接收的输入流的数量。发送信号的生成涉及变换输入流。变换包括将可变延迟，相移和信号整形中的一个或多个应用于输入流的信息。发射信号由天线系统的单独天线发射。

95. 发明授权

US07382842B2 Method and system for performing channel estimation in a multiple antenna block transmission system 有权
标题翻译：用于在多天线块传输系统中执行信道估计的方法和系统
公开(公告)号：US07382842B2
公开(公告)日：2008-06-03
申请号：US11195523
申请日：2005-08-01
申请人： Sriram Mudulodu , Krishnamurthy Giridhar
发明人： Sriram Mudulodu , Krishnamurthy Giridhar
IPC分类号： H04B7/10 , H04B7/08
CPC分类号： H04L25/0212 , H04B1/7113 , H04B7/02 , H04B7/04 , H04B17/364 , H04L25/0204 , H04L25/0206 , H04L27/2601
摘要： Methods and systems for performing channel estimation in a multiple antenna block transmission system are provided so as to improve the channel estimation quality and/or the delay spread of the channels that can be estimated.
摘要翻译：提供了用于在多天线块传输系统中执行信道估计的方法和系统，以便改善可估计的信道的信道估计质量和/或延迟扩展。

96. 发明申请

US20080123544A1 Methods and systems for estimating temporal correlation of a propagation channel 有权
标题翻译：用于估计传播信道的时间相关性的方法和系统
公开(公告)号：US20080123544A1
公开(公告)日：2008-05-29
申请号：US11821287
申请日：2007-06-22
申请人： Djordje Tujkovic , David Garrett , Ying Xia , Erik Lindskog , Brett Schein , J. Varaprasad
发明人： Djordje Tujkovic , David Garrett , Ying Xia , Erik Lindskog , Brett Schein , J. Varaprasad
IPC分类号： H04L12/26
CPC分类号： H04L43/06 , H04W24/08 , H04W28/06
摘要： Methods and systems for estimating Temporal Correlation (TC) of a propagation channel are provided. In an embodiment, a method for estimating the TC of the propagation channel comprises obtaining multiple channel quality reports of the propagation channel and estimating the TC of the propagation channel based on the multiple channel quality reports.
摘要翻译：提供了用于估计传播信道的时间相关（TC）的方法和系统。在一个实施例中，用于估计传播信道的TC的方法包括基于多个信道质量报告获得传播信道的多个信道质量报告和估计传播信道的TC。

97. 发明申请

US20080075210A1 Method and system for performing channel estimation in a multiple antenna block transmission system 有权
公开(公告)号：US20080075210A1
公开(公告)日：2008-03-27
申请号：US11998102
申请日：2007-11-28
申请人： Sriram Mudulodu , Krishnamurthy Giridhar
发明人： Sriram Mudulodu , Krishnamurthy Giridhar
IPC分类号： H04L1/02
CPC分类号： H04L25/0212 , H04B1/7113 , H04B7/02 , H04B7/04 , H04B17/364 , H04L25/0204 , H04L25/0206 , H04L27/2601
摘要： Methods and systems for performing channel estimation in a multiple antenna block transmission system are provided so as to improve the channel estimation quality and/or the delay spread of the channels that can be estimated.

98. 发明申请

US20080002619A1 Time domain interference averaging with multiuser diversity in OFDMA systems 失效
标题翻译： OFDMA系统中多用户分集的时域干扰平均
公开(公告)号：US20080002619A1
公开(公告)日：2008-01-03
申请号：US11454656
申请日：2006-06-16
申请人： Djordje Tujkovic , Arogyaswami Paulraj
发明人： Djordje Tujkovic , Arogyaswami Paulraj
IPC分类号： H04Q7/00
CPC分类号： H04L5/023 , H04L27/2608 , H04W72/0453
摘要： Interference between multiple users operating under multiuser diversity within a coherence bandwidth in an OFDMA system is reduced by spreading out the users' transmission symbols randomly in time within the coherence bandwidth. When transmission symbols are randomly dispersed, the variance of interference between users in the same sub-band is reduced on average.
摘要翻译：通过在相干带宽内随时随地扩散用户的传输符号，减少在OFDMA系统中的相干带宽内在多用户分集下操作的多个用户之间的干扰。当传输符号随机分散时，相同子带内的用户之间的干扰差异平均减小。

99. 发明授权

US07295074B2 Doherty power amplifier with phase compensation 失效
标题翻译：多相功率放大器，具有相位补偿
公开(公告)号：US07295074B2
公开(公告)日：2007-11-13
申请号：US11097118
申请日：2005-03-31
申请人： Gerald K. Wong , Tushar Ramanlal Shah , Korhan Titizer
发明人： Gerald K. Wong , Tushar Ramanlal Shah , Korhan Titizer
IPC分类号： H03F3/68
CPC分类号： H03F3/604 , H03F1/0288 , H03F2200/198
摘要： A Doherty power amplifier is provided that includes a main amplifier device and an auxiliary amplifier device. The Doherty power amplifier further includes a phase compensation network. The phase compensation network is configured to maintain a substantially constant phase of one of an output signal from the main amplifier device or an output signal from the auxiliary amplifier device across a range of input powers. The Doherty power amplifier further includes an impedance inverter for power combining an output signal of the main amplifier device with an output signal of the auxiliary amplifier device.
摘要翻译：提供了一种Doherty功率放大器，其包括主放大器装置和辅助放大器装置。 Doherty功率放大器还包括相位补偿网络。相位补偿网络被配置为保持来自主放大器装置的输出信号中的一个的相位恒定的相位或来自辅助放大器装置的输出信号的输入功率的范围。 Doherty功率放大器还包括一个阻抗反相器，用于将主放大器装置的输出信号与辅助放大器装置的输出信号进行功率合成。

100. 发明申请

US20070254655A1 Method of training a communication system 失效
标题翻译：培训通信系统的方法
公开(公告)号：US20070254655A1
公开(公告)日：2007-11-01
申请号：US11796497
申请日：2007-04-26
申请人： Djordje Tujkovic , Louay Jalloul , Sam P. Alex , J. Varaprasad
发明人： Djordje Tujkovic , Louay Jalloul , Sam P. Alex , J. Varaprasad
IPC分类号： H04Q7/20
CPC分类号： H04L27/2602 , H04B7/0691 , H04B7/0874 , H04L1/0001 , H04L1/20 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0085 , H04L25/0204 , H04L25/0226 , H04L27/2608 , H04L27/261
摘要： A method and system of training a communication system is disclosed. The method includes a first transceiver transmitting signals through one or more antennas of the first transceiver. A second transceiver selects a subset of a plurality of antennas of the second transceiver, wherein the selected subset provides a largest aggregate received signal power. The second transceiver transmits pilots on a subset of sub-carriers of multi-carrier signals through the selected subset of the plurality of antennas of the second transceiver. The first transceiver receives the pilots, and extracts channel knowledge from the received pilots.
摘要翻译：公开了一种训练通信系统的方法和系统。该方法包括通过第一收发器的一个或多个天线发射信号的第一收发器。第二收发器选择第二收发器的多个天线的子集，其中所选择的子集提供最大的总收信信号功率。第二收发器通过第二收发器的多个天线的选定子集在多载波信号的子载波子集上发射导频。第一收发器接收导频，并从接收到的导频中提取信道知识。

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