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1. 发明授权

US06603412B2 Interleaved coder and method 有权
标题翻译：交错编码器和方法
公开(公告)号：US06603412B2
公开(公告)日：2003-08-05
申请号：US10033135
申请日：2001-12-28
申请人： Alan Gatherer , Anand Dabak , Timothy M. Schmidl , John Linn
发明人： Alan Gatherer , Anand Dabak , Timothy M. Schmidl , John Linn
IPC分类号： H03M700
CPC分类号： H03M13/6566 , H03M13/271 , H03M13/2771
摘要： Quasi-parallel read/write interleaver architecture for data blocks by sequential spreading of variable size data subblocks into memory banks with bank address contention initiating the next data subblock. Iterative Turbo decoders with MAP decoders use such quasi-parallel interleavers and deinterleavers.
摘要翻译：用于数据块的准并行读/写交织器架构通过将可变大小的数据子块顺序扩展到具有启动下一数据子块的存储体地址争用的存储体。具有MAP解码器的迭代Turbo解码器使用这种准并行交织器和解交织器。

2. 发明申请

US20100124297A1 Receiving a Pilot Design and Channel Estimation 有权
标题翻译：接收导频设计和信道估计
公开(公告)号：US20100124297A1
公开(公告)日：2010-05-20
申请号：US12639422
申请日：2009-12-16
申请人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
发明人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
IPC分类号： H04L27/28 , H04L27/00
CPC分类号： H04L1/06 , H04B7/0452 , H04B7/12 , H04L5/0007 , H04L5/0048 , H04L25/0226
摘要： Embodiments of the invention provide a receiver in an OFDM based communication system adapted to perform channel estimation using a received reference signal transmitted from at least one antenna, said reference signal being substantially located into two OFDM symbols of a transmission time interval comprising of more than two OFDM symbols. A method of generating pilot structure, the pilot structure provides information to an apparatus for channel estimation in the OFDM system with a transmission time interval of seven OFDM symbols. The pilot structure comprising pilot signals from at least one transmitting antenna located in various OFDM symbols of the transmission time interval.
摘要翻译：本发明的实施例提供了一种基于OFDM的通信系统中的接收机，其适于使用从至少一个天线发送的接收到的参考信号来执行信道估计，所述参考信号基本上位于包含两个以上的传输时间间隔的两个OFDM符号中 OFDM符号。一种生成导频结构的方法，导频结构向具有7个OFDM符号的传输时间间隔的OFDM系统中的信道估计装置提供信息。所述导频结构包括来自位于所述传输时间间隔的各种OFDM符号中的至少一个发射天线的导频信号。

3. 发明授权

US09147193B2 Method for transmission of unicast control in broadcast/multicast transmission time intervals 有权
标题翻译：在广播/组播传输时间间隔内传输单播控制的方法
公开(公告)号：US09147193B2
公开(公告)日：2015-09-29
申请号：US13446492
申请日：2012-04-13
申请人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
发明人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
IPC分类号： H04J3/00 , G06Q30/00 , H04W72/00 , G06Q20/10 , G06Q40/00 , H04N21/6405 , H04L29/06 , H04W72/04 , H04N21/236 , H04N21/6408 , H04N21/61
CPC分类号： H04W72/1289 , G06Q20/10 , G06Q30/00 , G06Q40/00 , H04L5/0048 , H04L5/0053 , H04L12/18 , H04L27/2601 , H04L27/2602 , H04N21/437 , H04N21/44209 , H04W52/322 , H04W72/005 , H04W72/1205 , H04W72/14
摘要： Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.
摘要翻译：本发明的实施例提供了一种用于在通信系统的下行链路中的传输时间间隔期间最大化在单播和多播/广播通信模式之间支持时分复用的通信系统的上行链路中的带宽利用率的方法。这通过在支持多播/广播通信模式的TTI中多路复用至少用于UL调度分配的单播控制信令来实现。此外，单播控制信令的复用也可以通过将多播/广播TTI的符号分成两个较短的符号来实现，其中这两个较短的符号中的第一个携带至少单播控制信令，并且这些较短的符号中的第二个携带多播/广播信令。

4. 发明授权

US07929416B2 Receiving a pilot design and channel estimation 有权
标题翻译：接收试点设计和信道估计
公开(公告)号：US07929416B2
公开(公告)日：2011-04-19
申请号：US12639422
申请日：2009-12-16
申请人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
发明人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
IPC分类号： H04J11/00
CPC分类号： H04L1/06 , H04B7/0452 , H04B7/12 , H04L5/0007 , H04L5/0048 , H04L25/0226
摘要： A receiver in an OFDM based communication system is adapted to perform channel estimation using a received reference signal transmitted from at least one antenna The reference signal is substantially located into at least two OFDM symbols of a transmission time interval comprising of more than two OFDM symbols. A power level of said reference signal is divided into said non-consecutive OFDM symbols in said transmission time interval and adapted to use the reference signal located in a first OFDM symbol in succeeding transmission time intervals in addition to the reference symbols in a current transmission time interval and a preceding transmission time interval.
摘要翻译：基于OFDM的通信系统中的接收机适于使用从至少一个天线发射的接收的参考信号来执行信道估计。参考信号基本上位于包括多于两个OFDM符号的传输时间间隔的至少两个OFDM符号中。所述参考信号的功率电平在所述传输时间间隔中被划分为所述非连续OFDM符号，并且适于在当前传输时间中除了参考符号之外，使用位于后续传输时间间隔中的第一OFDM符号中的参考信号间隔和之前的传输时间间隔。

5. 发明授权

US07113499B2 Wireless communication 有权
标题翻译：无线通信
公开(公告)号：US07113499B2
公开(公告)日：2006-09-26
申请号：US09820152
申请日：2001-03-28
申请人： Mohammed Nafie , Anand Dabak , Timothy M. Schmidl
发明人： Mohammed Nafie , Anand Dabak , Timothy M. Schmidl
IPC分类号： H04J3/24
CPC分类号： H04L1/0026 , H04L1/0001 , H04L1/0015 , H04L1/0034
摘要： A wireless communication transmission channel estimation by initial data exchange to determine calibration factors to apply to tracked channel estimations from received transmissions.
摘要翻译：通过初始数据交换的无线通信传输信道估计，以确定适用于从接收到的传输的跟踪信道估计的校准因子。

6. 发明申请

US20120195246A1 Method for Transmission of Unicast Control in Broadcast/Multicast Transmission Time Intervals 有权
标题翻译：在广播/组播传输时间间隔内传输单播控制的方法
公开(公告)号：US20120195246A1
公开(公告)日：2012-08-02
申请号：US13446492
申请日：2012-04-13
申请人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
发明人： Aris Papasakellariou , Timothy M. Schmidl , Eko N. Onggosanusi , Anand Dabak
IPC分类号： H04W4/06 , H04W52/02
CPC分类号： H04W72/1289 , G06Q20/10 , G06Q30/00 , G06Q40/00 , H04L5/0048 , H04L5/0053 , H04L12/18 , H04L27/2601 , H04L27/2602 , H04N21/437 , H04N21/44209 , H04W52/322 , H04W72/005 , H04W72/1205 , H04W72/14
摘要： Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.
摘要翻译：本发明的实施例提供了一种用于在通信系统的下行链路中的传输时间间隔期间最大化在单播和多播/广播通信模式之间支持时分复用的通信系统的上行链路中的带宽利用率的方法。这通过在支持多播/广播通信模式的TTI中多路复用至少用于UL调度分配的单播控制信令来实现。此外，单播控制信令的复用也可以通过将多播/广播TTI的符号分成两个较短的符号来实现，其中这两个较短的符号中的第一个携带至少单播控制信令，并且这些较短的符号中的第二个携带多播/广播信令。

7. 发明授权

US07184457B2 Spread spectrum path estimation 有权
标题翻译：扩展频谱路径估计
公开(公告)号：US07184457B2
公开(公告)日：2007-02-27
申请号：US09792123
申请日：2001-02-23
申请人： Timothy M. Schmidl , Srinath Hosur , Anand Dabak , Aris Papasakellariou
发明人： Timothy M. Schmidl , Srinath Hosur , Anand Dabak , Aris Papasakellariou
IPC分类号： H04B1/00
CPC分类号： H04B1/7075 , H04B1/70757 , H04B1/709 , H04B1/7117 , H04B2001/70706
摘要： Spread spectrum rake receiver estimates number of paths within a chip interval and assigns corresponding fingers. Cross-correlation matrix eigenvalues or direct BER estimates for differing numbers of fingers determine whether one or two fingers assigned to the group of paths within a chip.
摘要翻译：扩展频谱耙式接收机估计码片间隔内的路径数，并分配相应的手指。用于不同数量手指的互相关矩阵特征值或直接BER估计确定分配给芯片内的一组路径的一个或两个手指。

8. 发明授权

US06829290B1 Wireless communications system with combining of multiple paths selected from correlation to the primary synchronization channel 有权
标题翻译：无线通信系统，具有从与主同步信道相关选择的多个路径的组合
公开(公告)号：US06829290B1
公开(公告)日：2004-12-07
申请号：US09669394
申请日：2000-09-26
申请人： Timothy M. Schmidl , Alan Gatherer , Srinath Hosur , Anand G. Dabak
发明人： Timothy M. Schmidl , Alan Gatherer , Srinath Hosur , Anand G. Dabak
IPC分类号： H04B169
CPC分类号： H04B1/7115 , H04B1/709 , H04B1/7117 , H04B2201/70707
摘要： A wireless receiver (UST). The receiver comprises at least one antenna (ATU) for receiving a plurality of frames (FR) in a form of a plurality of paths. Each of the plurality of frames comprises a plurality of time slots (SLN), and each of the plurality of time slots comprises a plurality of symbols. Further, each of the plurality of paths has a corresponding sample position, wherein the plurality of symbols comprise a primary synchronization code symbol (PSC). The receiver further comprises circuitry (52) for correlating a primary synchronization code across a group of the plurality of symbols, and circuitry for identifying a plurality of path positions within the group. Each of the plurality of path positions corresponds to a respective one of a plurality of largest-amplitude paths represented within the group as detected in response to the circuitry for correlating. Finally, the receiver comprises circuitry for combining (54, 58) the plurality of largest-amplitude paths in response to identification of those paths by the circuitry for identifying.
摘要翻译：无线接收器（UST）。接收机包括用于接收多个路径形式的多个帧（FR）的至少一个天线（ATU）。多个帧中的每一个包括多个时隙（SLN），并且多个时隙中的每一个包括多个符号。此外，多个路径中的每一个具有对应的采样位置，其中多个符号包括主同步码符号（PSC）。接收机还包括用于将多个符号组中的主同步码相互关联的电路（52）以及用于识别组内的多个路径位置的电路。多个路径位置中的每一个对应于响应于用于相关的电路检测到的在组内表示的多个最大幅度路径中的相应一个路径位置。最后，接收机包括用于响应于用于识别的电路的那些路径的识别来组合（54,58）多个最大幅度路径的电路。

9. 发明授权

US06725025B1 Interference cancellation among wireless units using Gibbs sampling 有权
标题翻译：使用Gibbs采样的无线单元之间的干扰消除
公开(公告)号：US06725025B1
公开(公告)日：2004-04-20
申请号：US09665843
申请日：2000-09-20
申请人： Timothy M. Schmidl , Alan Gatherer , Xiaodong Wang , Rong Chen
发明人： Timothy M. Schmidl , Alan Gatherer , Xiaodong Wang , Rong Chen
IPC分类号： H04B106
CPC分类号： H04B1/71075 , H04L25/067
摘要： An improved interference cancellation technique is disclosed. Digital baseband circuitry (40) includes user and symbol detection circuitry (50) for performing a Gibbs sampler type of interference cancellation, either embodied in custom hardware (44) or in software. Random initial guesses for a signal sample (either a symbol or chip) are made for each user. Interference cancellation is performed on a user-by-user basis, using the then-current data decision values for the other, interfering users. A soft data decision is used to derive a probability distribution function for the actual data decision for the sample for the user. A randomly selected value is applied against the probability distribution function to generate the next data decision value for that user, and the process is repeated until convergence. Following convergence, a statistic is used to select a final data decision value for each user, from the set of intermediate data decision values stored in memory.
摘要翻译：公开了一种改进的干扰消除技术。数字基带电路（40）包括用于执行Gibbs采样器类型的干扰消除的用户和符号检测电路（50），或者体现在定制硬件（44）中或软件中。为每个用户制作信号样本（符号或芯片）的随机初始猜测。干扰消除是在逐个用户的基础上，使用当时的其他干扰用户的当前数据判定值进行的。软数据决策用于导出用于用户的样本的实际数据决定的概率分布函数。对概率分布函数应用随机选择的值以生成该用户的下一个数据判定值，并重复该过程直到收敛。收敛后，根据存储在存储器中的一组中间数据判定值，使用统计量为每个用户选择最终数据判定值。

10. 发明授权

US08107420B2 Wireless communications system with cycling of unique cell bit sequences in station communications 有权
标题翻译：无线通信系统，在站通信中具有独特的小区位序列循环
公开(公告)号：US08107420B2
公开(公告)日：2012-01-31
申请号：US12034534
申请日：2008-02-20
申请人： Timothy M. Schmidl , Alan Gatherer , Anand G. Dabak
发明人： Timothy M. Schmidl , Alan Gatherer , Anand G. Dabak
IPC分类号： H04W4/00
CPC分类号： H04B7/2656
摘要： A wireless communication system (10). The system comprises transmitter circuitry (BST1) comprising circuitry for transmitting a plurality of frames to a receiver in a first cell (Cell 1). Each of the plurality of frames comprises a bit group (22), and the bit group uniquely distinguishes the first cell from a second cell (Cell 2) adjacent the first cell. The transmitter circuitry further comprises circuitry (54) for inserting a bit sequence into the bit group. The bit sequence is selected from a plurality of bit sequences (S1-SK) such that successive transmissions by the transmitter circuitry comprise a cycle of successive ones of the plurality of bit sequences.
摘要翻译：一种无线通信系统（10）。该系统包括发射机电路（BST1），包括用于将第一小区（小区1）中的多个帧发射到接收机的电路。多个帧中的每一个包括位组（22），并且该位组将第一单元与第一单元相邻的第二单元（单元2）唯一区分开。发射机电路还包括用于将比特序列插入到比特组中的电路（54）。从多个比特序列（S1-SK）中选择比特序列，使得发射机电路的连续传输包括多个比特序列中的连续的一个比特序列的周期。

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