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41. 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。

42. 发明申请

US20060291581A1 High Data Rate Closed Loop MIMO Scheme Combining Transmit Diversity and Data Multiplexing 有权
标题翻译：高数据速率闭环MIMO方案组合发射分集和数据复用
公开(公告)号：US20060291581A1
公开(公告)日：2006-12-28
申请号：US11468394
申请日：2006-08-30
申请人： Eko Onggosanusi , Anand Dabak , Timothy Schmidl
发明人： Eko Onggosanusi , Anand Dabak , Timothy Schmidl
IPC分类号： H04L1/02
CPC分类号： H04B7/0632 , H04B7/0854 , H04B7/0857
摘要： Closed loop multiple-antenna wireless communications system with antenna weights determined by maximizing a composite channel signal-to-interference-plus-noise ratio minimum. Multiplexed symbol streams over subsets of antennas enhance throughput.
摘要翻译：具有天线权重的闭环多天线无线通信系统，其通过最大化复合信道信噪比加噪声比最小来确定。天线子集上的多路复用符号流增加吞吐量。

43. 发明申请

US20060039489A1 Method and apparatus for providing closed-loop transmit precoding 审中-公开
标题翻译：用于提供闭环发射预编码的方法和装置
公开(公告)号：US20060039489A1
公开(公告)日：2006-02-23
申请号：US11182083
申请日：2005-07-15
申请人： Muhammad Ikram , Eko Onggosanusi , Vasanthan Raghavan , Anand Dabak , Srinath Hosur , Badrinarayanan Varadarajan
发明人： Muhammad Ikram , Eko Onggosanusi , Vasanthan Raghavan , Anand Dabak , Srinath Hosur , Badrinarayanan Varadarajan
IPC分类号： H04K1/10 , H04L27/04 , H04L1/02
CPC分类号： H04B7/0663 , H04B7/0634 , H04B7/0639 , H04L5/0023 , H04L5/0046 , H04L5/006 , H04L25/0204 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： A method for providing closed-loop transmit precoding between a transmitter and a receiver, includes defining a codebook that includes a set of unitary rotation matrices. The receiver determines which preceding rotation matrix from the codebook should be used for each sub-carrier that has been received. The receiver sends an index to the transmitter, where the transmitter reconstructs the precoding rotation matrix using the index, and precodes the symbols to be transmitted using the preceding rotation matrix. An apparatus that employs this closed-loop technique is also described.
摘要翻译：一种用于在发射机和接收机之间提供闭环发射预编码的方法，包括定义包括一组单位旋转矩阵的码本。接收机确定来自码本的哪个先前的旋转矩阵应该被用于已经被接收的每个子载波。接收机向发射机发送索引，其中发射机使用索引重构预编码旋转矩阵，并且使用前一个旋转矩阵对要发送的符号进行预编码。还描述了采用该闭环技术的装置。

44. 发明申请

US20060018410A1 Multimode detection 审中-公开
标题翻译：多模式检测
公开(公告)号：US20060018410A1
公开(公告)日：2006-01-26
申请号：US10899615
申请日：2004-07-26
申请人： Eko Onggosanusi , Anand Dabak , Srinath Hosur
发明人： Eko Onggosanusi , Anand Dabak , Srinath Hosur
IPC分类号： H03D1/00
CPC分类号： H04L25/0204 , H04B7/0434 , H04B7/0854 , H04L2025/03547
摘要： In a wireless MIMO system, a multimode detector selects detection mode by channel estimation: ill-conditioned channels trigger use of high performance detection, whereas well-behaved channels lead to low complexity detection. Detection modes typically include maximum likelihood, minimum mean squared error, zero forcing, and so forth.
摘要翻译：在无线MIMO系统中，多模式检测器通过信道估计选择检测模式：不良条件的信道触发使用高性能检测，而良好的信道导致检测低复杂度。检测模式通常包括最大似然，最小均方误差，零强迫等。

45. 发明申请

US20050237923A1 Multi-bank OFDM high data rate extensions 审中-公开
标题翻译：多行OFDM高数据速率扩展
公开(公告)号：US20050237923A1
公开(公告)日：2005-10-27
申请号：US11115816
申请日：2005-04-26
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
IPC分类号： H04B7/02 , H04J1/00 , H04J11/00 , H04L27/26
CPC分类号： H04L27/2602 , H04B7/02
摘要： A transmitter 200 is provided. The transmitter 200 comprises a mapper 207 operable to map a bit stream into a plurality of tones to promote high data rate multi-band orthogonal frequency division multiplex communication, wherein the tones can take on sixteen or more different values 300. In another embodiment a communications system 1360 is provided that includes a transceiver 1362 that has two or more antennas 1394 and 1396. The transceiver 1362 transmits a first multi-band orthogonal frequency division multiplex signal in multiple input/multiple output mode and receives a second multi-band orthogonal frequency division multiplex signal in multiple input/multiple output mode. In another embodiment, a transceiver 200, 202 transmits a first multi-band orthogonal frequency division multiplex symbol concurrently on a plurality of sub-bands and receives a second multi-band orthogonal frequency division multiplex symbol concurrently on a plurality of sub-bands.
摘要翻译：提供发射机200。发射机200包括映射器207，其可操作以将比特流映射成多个音调以促进高数据速率多频带正交频分多路复用通信，其中音调可以具有十六个或更多个不同的值300.在另一个实施例中，通信提供系统1360，其包括具有两个或多个天线1394和1396的收发机1362.收发机1362以多输入/多输出模式发送第一多频带正交频分多路复用信号，并接收第二多频带正交频分多重输入/多输出模式下的多路复用信号。在另一个实施例中，收发器200,202在多个子带上同时发送第一多频带正交频分复用符号，并且在多个子带上同时接收第二多频带正交频分复用符号。

46. 发明申请

US20050207441A1 Packet transmission scheduling in a multi-carrier communications system 审中-公开
标题翻译：多载波通信系统中的分组传输调度
公开(公告)号：US20050207441A1
公开(公告)日：2005-09-22
申请号：US11085452
申请日：2005-03-21
申请人： Eko Onggosanusi , Anand Dabak , Timothy Schmidl , Aris Papasakellariou , Jalganesh Balakrishnan , Yan Hui
发明人： Eko Onggosanusi , Anand Dabak , Timothy Schmidl , Aris Papasakellariou , Jalganesh Balakrishnan , Yan Hui
IPC分类号： H04J99/00 , H04L5/02 , H04L27/26 , H04J15/00
CPC分类号： H04L5/023 , H04L27/2608
摘要： Method for packet transmission scheduling in a multi-carrier communications system. A preferred embodiment comprises selecting a set of users from a group of users who are targets of intended transmissions, wherein the selection is based upon channel quality information, determining a set of transmission parameters for each user in the set of users, and scheduling transmissions to the set of users. The channel quality information, which can be provided by the users of the multi-carrier communications system, can permit the exploitation of frequency diversity inherent in the multi-carrier communications system to increase system capacity to beyond a simple sum of carrier transmission bandwidth.
摘要翻译：多载波通信系统中分组传输调度的方法。优选实施例包括从作为目标传输目标的一组用户中选择一组用户，其中所述选择基于信道质量信息，确定用户组中每个用户的一组传输参数，并将传输调度到该组用户。可以由多载波通信系统的用户提供的信道质量信息可以允许利用多载波通信系统中固有的频率分集来增加系统容量以超出载波传输带宽的简单和。

47. 发明申请

US20050207345A1 Hybrid ARQ schemes for a multi-carrier communications system 审中-公开
标题翻译：用于多载波通信系统的混合ARQ方案
公开(公告)号：US20050207345A1
公开(公告)日：2005-09-22
申请号：US11085591
申请日：2005-03-21
申请人： Eko Onggosanusi , Anand Dabak , Timothy Schmidl , Aris Papasakellariou , Yan Hui
发明人： Eko Onggosanusi , Anand Dabak , Timothy Schmidl , Aris Papasakellariou , Yan Hui
IPC分类号： H04L1/18 , H04L12/26 , H04L27/26
CPC分类号： H04L1/1887 , H04L1/1819 , H04L27/2608
摘要： Method for exploiting frequency diversity in a multi-carrier communications system to improve retransmission performance. A preferred embodiment comprises receiving the request for retransmission, formatting data for the retransmission, selecting a carrier from a plurality of carriers, and transmitting the retransmission on the selected carrier. The selected carrier may be different from a carrier used transmit the damaged transmission, thereby frequency diversity is exploited to change the probability of successful transmission in the retransmission. Alternatively, the retransmission may take place at a later time, to permit changes in the selected carrier to take place and obtain frequency diversity via the changed carrier.
摘要翻译：利用多载波通信系统中的频率分集来提高重传性能的方法。优选实施例包括接收重传请求，格式化重传数据，从多个载波中选择载波，以及在所选载波上发送重传。所选择的载波可能与使用的载波不同，发送损坏的传输，从而利用频率分集来改变重传中成功传输的概率。或者，重传可以在稍后的时间进行，以允许所选择的载波中的改变发生并通过改变的载波获得频率分集。

48. 发明申请

US20050195843A1 Group based packet scheduling algorithm 有权
标题翻译：基于组的分组调度算法
公开(公告)号：US20050195843A1
公开(公告)日：2005-09-08
申请号：US10792569
申请日：2004-03-03
申请人： Nasir Ahmed , Eko Onggosanusi , Anand Dabak , Timothy Schmidl
发明人： Nasir Ahmed , Eko Onggosanusi , Anand Dabak , Timothy Schmidl
IPC分类号： H04L12/56
CPC分类号： H04W72/121
摘要： A system comprises a base station, a plurality of mobile stations, and a packet scheduling algorithm that operates on the base station. The packet scheduling algorithm groups the plurality of mobile stations into a plurality of groups based on average throughput with the base station. The packet scheduling algorithm selects one of the plurality of groups for applying a scheduling metric.
摘要翻译：一种系统包括基站，多个移动站以及在基站上操作的分组调度算法。分组调度算法基于与基站的平均吞吐量将多个移动站分组成多个组。分组调度算法选择多个组中的一个来应用调度度量。

49. 发明申请

US20050192032A1 Satellite positioning system receiver utilizing broadcast doppler information 有权
标题翻译：卫星定位系统接收机利用广播多普勒信息
公开(公告)号：US20050192032A1
公开(公告)日：2005-09-01
申请号：US11069595
申请日：2005-02-28
申请人： Eko Onggosanusi , Anand Dabak
发明人： Eko Onggosanusi , Anand Dabak
IPC分类号： G01S1/00 , G01S5/14 , G01S19/09 , G01S19/46 , H04M11/04 , H04Q7/20
CPC分类号： G01S19/254
摘要： A cellular communicating device (10). The device comprises means (221) for communicating bi-directional data to and from a cellular transceiver station along a bi-directional channel (30S). The device also comprises means (222) for receiving SPS information. The device also comprises means (223) for receiving broadcast Doppler information from a source other than the bi-directional channel and an SPS system. Lastly, the device also comprises means (24) for determining a location fix of the electronic device in response to the SPS information and the broadcast Doppler information.
摘要翻译：一种蜂窝通信设备（10）。该设备包括用于沿双向通道（30S）向蜂窝收发器站传送双向数据和从蜂窝收发台传送双向数据的装置（22I 1）。该装置还包括用于接收SPS信息的装置（22,2＆gt; 2）。该设备还包括用于从除双向通道之外的源和SPS系统接收广播多普勒信息的装置（22,33）。最后，设备还包括用于响应于SPS信息和广播多普勒信息来确定电子设备的定位的装置（24）。

50. 发明申请

US20050111597A1 Space time block coded transmit antenna diversity for WCDMA 有权
标题翻译：用于WCDMA的时空块编码发射天线分集
公开(公告)号：US20050111597A1
公开(公告)日：2005-05-26
申请号：US10659906
申请日：2003-09-11
申请人： Anand Dabak , Rohit Negi
发明人： Anand Dabak , Rohit Negi
IPC分类号： H04J13/00 , H04B7/02 , H04B7/06 , H04B7/26 , H04L1/00 , H04L1/02 , H04L1/06
CPC分类号： H04B7/0669 , H04L1/0065 , H04L1/0071 , H04L1/0618 , H04L1/0631
摘要： A mobile communication system is designed with an input circuit coupled to receive a first plurality of signals (rj(i+τj), i=0−N−1) during a first time (T0-T1) from an external source and coupled to receive a second plurality of signals (rj(i+τj), i=N−2N−1) during a second time (T1-T2) from the external source. The input circuit receives each of the first and second plurality of signals along respective first and second paths (j). The input circuit produces a first input signal (Rj1) and a second input signal (Rj2) from the respective first and second plurality of signals. A correction circuit is coupled to receive a first estimate signal (αj1), a second estimate signal (αj2) and the first and second input signals. The correction circuit produces a first symbol estimate ({overscore (S)}1) in response to the first and second estimate signals and the first and second input signals. The correction circuit produces a second symbol estimate ({overscore (S)}2) in response to the first and second estimate signals and the first and second input signals.
摘要翻译：移动通信系统被设计成具有耦合以接收第一多个信号（i = 0-N-1）的第一多个信号的输入电路，在来自外部源的第一时间（T 0 -T 1）期间，并且被耦合以接收第二多个信号（r 1，j 2，...，i = N-2N-1）在来自外部源的第二时间（T 1 -T 2）期间。输入电路沿着相应的第一和第二路径（j）接收第一和第二多个信号中的每一个。输入电路产生第一输入信号（R SUB），第二输入信号（R SUB）和第二输入信号）从相应的第一和第二多个信号。耦合校正电路以接收第一估计信号（第一估计信号），第二估计信号（α2，j 2， / SUP>）和第一和第二输入信号。所述校正电路响应于所述第一和第二估计信号以及所述第一和第二输入信号产生第一符号估计（{overcore（S SUB> 1）），所述校正电路产生第二符号估计（{overscore （S SUB2）响应于第一和第二估计信号以及第一和第二输入信号。

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