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1. 发明授权

US07433661B2 Method for improved performance and reduced bandwidth channel state information feedback in communication systems 有权
标题翻译：通信系统中改善性能和减少带宽信道状态信息反馈的方法
公开(公告)号：US07433661B2
公开(公告)日：2008-10-07
申请号：US10603290
申请日：2003-06-25
申请人： Achilles G. Kogiantis , Aris L. Moustakas , Lawrence H. Ozarow , Steven H. Simon
发明人： Achilles G. Kogiantis , Aris L. Moustakas , Lawrence H. Ozarow , Steven H. Simon
IPC分类号： H04B17/00
CPC分类号： H04W24/08 , H04W24/00
摘要： A method of transmitting information over a feed back channel of a communication system that has multiple antenna systems is provided. Long term channel condition information is obtained from received measured and/or calculated channel parameter values. The obtained long term channel condition information is arranged in a particular manner and transmitted over a defined time period during which the long term channel condition information varies relatively slowly. Because the long term information remains relatively constant for one or more defined time periods, the amount of bandwidth needed to communicate this value is small because it need only be communicated occasionally. Thus only a small bandwidth needs to be allocated for transmitting this long term information.
摘要翻译：提供了一种通过具有多个天线系统的通信系统的反馈信道发送信息的方法。从接收到的测量和/或计算的信道参数值获得长期信道条件信息。所获得的长期信道条件信息以特定方式布置并且在长期信道条件信息变化相对较慢的限定时间段内传输。由于长期信息在一个或多个定义的时间段内保持相对恒定，所以传达该值所需的带宽量很小，因为它只需要偶尔传送。因此，只需要分配小的带宽来传送这个长期信息。

2. 发明授权

US07554952B2 Distributed multiple antenna scheduling for wireless packet data communication system using OFDM 有权
标题翻译：使用OFDM的无线分组数据通信系统的分布式多天线调度
公开(公告)号：US07554952B2
公开(公告)日：2009-06-30
申请号：US11054256
申请日：2005-02-09
申请人： Achilles G. Kogiantis , Jung Ah Lee , Lawrence H. Ozarow
发明人： Achilles G. Kogiantis , Jung Ah Lee , Lawrence H. Ozarow
IPC分类号： H04Q7/00
CPC分类号： H04B7/0691 , H04B7/0452 , H04W52/42
摘要： A wireless communication system (20) includes using multiple antennas (30, 32) for simultaneous transmissions to multiple mobile stations (24, 26). A distributed multiple antenna scheduling (DMAS) technique includes selecting a plurality of mobile stations for at least receiving simultaneous transmissions on at least one selected subcarrier from within a carrier bandwidth having orthogonal frequency division multiplexing (OFDM). In a disclosed example, a plurality of mobile stations are selected for each subcarrier within the carrier bandwidth. A disclosed example includes grouping subcarriers together into subsets to reduce computation complexity for determining which mobile stations to select for the simultaneous transmission.
摘要翻译：无线通信系统（20）包括使用多个天线（30,32）来同时传输到多个移动站（24,26）。分布式多天线调度（DMAS）技术包括从具有正交频分复用（OFDM）的载波带宽内选择多个移动台用于至少接收至少一个所选子载波上的同时传输。在公开的示例中，为载波带宽内的每个子载波选择多个移动台。所公开的示例包括将子载波合并成子集，以减少用于确定哪些移动站选择用于同时传输的计算复杂度。

3. 发明授权

US5115453A Technique for designing a multidimensional signaling scheme 失效
标题翻译：设计多维信号方案的技术
公开(公告)号：US5115453A
公开(公告)日：1992-05-19
申请号：US590849
申请日：1990-10-01
申请人： Arthur R. Calderbank , Lawrence H. Ozarow
发明人： Arthur R. Calderbank , Lawrence H. Ozarow
IPC分类号： H04L27/00 , H03M13/25 , H04L27/34
CPC分类号： H03M13/256 , H03M13/25 , H04L27/3438
摘要： In a system where a signal constellation is used for data communications, signal points in the signal constellation are selected to represent incoming data. The signal points, thus selected, are transmitted through a channel. The signal constellation is divided into a plurality of regions each including an equal number of signal points. A coding scheme is employed to ensure that signal points within any one region are selected equiprobably, and the probability of selecting any signal point in one region is different from that in another region.
摘要翻译：在信号星座用于数据通信的系统中，选择信号星座中的信号点来表示输入数据。所选择的信号点通过通道传输。信号星座被分成多个区域，每个区域包括相等数量的信号点。采用编码方案来确保任何一个区域内的信号点均等选择，并且在一个区域中选择任何信号点的概率不同于另一个区域的信号点。

4. 发明授权

US5204901A Public key cryptographic mechanism 失效
标题翻译：公钥密码机制
公开(公告)号：US5204901A
公开(公告)日：1993-04-20
申请号：US739263
申请日：1991-08-01
申请人： John E. Hershey , Radha Krishna R. Yarlagadda , Lawrence H. Ozarow
发明人： John E. Hershey , Radha Krishna R. Yarlagadda , Lawrence H. Ozarow
IPC分类号： H04L9/08
CPC分类号： H04L9/0838 , H04L9/088 , H04L2209/08
摘要： A public key cryptographic mechanism provides a measurable degree of minimum security, in an ensemble sense, for two Parties, A and B, to establish a commonly held private cryptographic keying variable between them for establishing communications. Both parties randomly generate m-bit vectors vec.sub.-- A and vec.sub.-- B, store the vectors, then copy the vectors and add m-bit vectors containing n ones. The vectors thus modified are exchanged between the parties. Both parties then respectively bit-by-bit combine, by Exclusive-Or logic, their stored m-bit vectors vec.sub.-- A and vec.sub.-- B with a received vector, denoted rec.sub.-- B and rec.sub.-- A, to generate respective vectors W.sub.-- A and W.sub.-- B. Parties A and B then generate all ##EQU1## vectors at a Hamming distance n from W.sub.-- A and W.sub.-- B respectively. These ##EQU2## vectors are each bit-by-bit added, using Exclusive-Or logic, with their encryptions under a publicly known keying variable K.sub.1, forming image vectors. Both parties exchange their image vectors in random order. Both parties then determine the matches between the image vectors they have sent and received, allowing them to determine a commonly held m-bit vector X. Vector X is then used to derive a keying variable for a single key encryption algorithm by encrypting it under the DES ECB/ENCRYPT mode keyed by a publicly known keying variable K.sub.2.
摘要翻译：公共密钥加密机制在整体意义上提供可测量的最小安全性，为两个缔约方A和B在其间建立通用的私有密钥密钥变量，以建立通信。双方随机生成m位向量vec-A和vec-B，存储向量，然后复制向量并添加包含n个的m位向量。如此修改的向量在双方之间进行交换。双方然后分别通过Exclusive-Or逻辑将其存储的m位向量vec-A和vec-B与接收的矢量（rec-B和rec-A）进行逐位组合，以生成相应的向量WA和 WB。缔约方A和B然后分别从W-A和W-B生成汉明距离n处的所有向量。这些矢量每个都逐位添加，使用Exclusive-Or逻辑，其公开的密钥变量K1下的加密形成图像向量。双方以随机顺序交换图像向量。双方然后确定他们已经发送和接收的图像向量之间的匹配，从而允许它们确定一个共同保持的m位向量X.然后，向量X用于通过在单个密钥加密算法下加密来导出单个密钥加密算法的密钥变量 DES ECB / ENCRYPT模式由公知的键控变量K2键入。

5. 发明授权

US07454225B2 Method and apparatus for reducing transmitted energy in power-controlled systems based on early decoding 有权
标题翻译：基于早期解码的功率控制系统中减少传输能量的方法和装置
公开(公告)号：US07454225B2
公开(公告)日：2008-11-18
申请号：US11023991
申请日：2004-12-28
申请人： Lawrence H. Ozarow , Ashok N. Rudrapatna , Naresh Sharma
发明人： Lawrence H. Ozarow , Ashok N. Rudrapatna , Naresh Sharma
IPC分类号： H04B7/00
CPC分类号： H04W52/08
摘要： The present invention provides a method for reducing transmitted energy based on early decoding. The method includes accessing a first portion of a block including a plurality of symbols indicative of an encoded message. The first portion has been transmitted at a first transmission power and having less than all of the plurality of symbols. The method also includes attempting to decode the encoded message using the first portion of the block, determining whether the encoded message was decoded, and providing an indication of a second transmission power in response to determining that the encoded message was decoded.
摘要翻译：本发明提供了一种基于早期解码来减少发射能量的方法。该方法包括访问包括指示编码消息的多个符号的块的第一部分。第一部分已经以第一传输功率发送并且具有少于所有多个符号的全部。该方法还包括尝试使用块的第一部分来解码编码消息，确定编码消息是否被解码，以及响应于确定编码消息被解码而提供第二传输功率的指示。

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