公开(公告)号：US08107570B2

公开(公告)日：2012-01-31

申请号：US12565443

申请日：2009-09-23

申请人： Anand G. Dabak ,  Rohit Negi

发明人： Anand G. Dabak ,  Rohit Negi

IPC分类号： H04B7/10 ,  H04L1/02

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 ({tilde over (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 ({tilde over (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输入电路，该输入电路被耦合以在来自外部源的第一时间（T0-T1）期间接收第一多个信号（rj（i +τj），i = 0-N-1） 在来自外部源的第二时间（T1-T2）期间接收第二多个信号（rj（i +τj），i = N-2N-1）。 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。 输入电路从相应的第一和第二多个信号产生第一输入信号（Rj1）和第二输入信号（Rj2）。 耦合校正电路以接收第一估计信号（αj1），第二估计信号（αj2）以及第一和第二输入信号。 校正电路响应于第一和第二估计信号以及第一和第二输入信号产生第一符号估计（（S）} 1）。 校正电路响应于第一和第二估计信号以及第一和第二输入信号产生第二符号估计（（S）} 2）。

公开(公告)号：US07859985B2

公开(公告)日：2010-12-28

申请号：US11085305

申请日：2005-03-21

申请人： Timothy M. Schmidl ,  Eko N. Onggosanusi ,  Anand G. Dabak ,  Aris Papasakellariou ,  Jaiganesh Balakrishnan ,  Yan Hui

发明人： Timothy M. Schmidl ,  Eko N. Onggosanusi ,  Anand G. Dabak ,  Aris Papasakellariou ,  Jaiganesh Balakrishnan ,  Yan Hui

IPC分类号： H04J11/00 ,  H04B7/216 ,  H04B1/00 ,  H04L27/00

CPC分类号： H04L1/1845 ,  H04L1/0026 ,  H04L1/1671

摘要： System and method for signaling control information in a multi-carrier communications system to transmit data. A preferred embodiment comprises demodulating a first carrier that is used for transmitting a control channel transmission, determining a second carrier that is used for transmitting a data channel transmission based upon the demodulated control channel transmission, and demodulating the second carrier to obtain the data channel transmission. Additionally, designs for multi-carrier receivers are provided.

摘要翻译： 用于在多载波通信系统中用于信令控制信息的数据传输的系统和方法。 优选实施例包括解调用于发送控制信道传输的第一载波，基于解调的控制信道传输确定用于发送数据信道传输的第二载波，以及解调第二载波以获得数据信道传输 。 另外，提供了多载波接收机的设计。

公开(公告)号：US07715798B2

公开(公告)日：2010-05-11

申请号：US11468394

申请日：2006-08-30

申请人： Eko N. Onggosanusi ,  Anand G. Dabak ,  Timothy M. Schmidl

发明人： Eko N. Onggosanusi ,  Anand G. Dabak ,  Timothy M. Schmidl

IPC分类号： H04B1/00

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。

公开(公告)号：US07711034B2

公开(公告)日：2010-05-04

申请号：US12331279

申请日：2008-12-09

申请人： Anand G. Dabak ,  Eko N. Onggosanusi

发明人： Anand G. Dabak ,  Eko N. Onggosanusi

IPC分类号： H04B1/69

CPC分类号： H04B7/0615 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0645 ,  H04B7/0654 ,  H04B7/0857 ,  H04B17/104 ,  H04B17/24

摘要： A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A121) and a second transmit antenna (A122) at a transmitting station (14). Each of the plurality of slots comprises a first channel (DPCH) comprising a first set of pilot symbols and a second channel (PCCPCH) comprising a second set of pilot symbols. The user station further comprises circuitry (50) for measuring a first channel measurement (α1,n) for each given slot in the plurality of slots from the first transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (50) for measuring a second channel measurement (α2,n) for each given slot in the plurality of slots from the second transmit antenna and in response to the second set of pilot symbols in the given slot. The user station further comprises circuitry (52) for measuring a phase difference value (φ2(n)) for each given slot in the plurality of slots in response to the first channel measurement and the second channel measurement for the given slot and in response to a ninety degree rotation of the given slot relative to a slot which was received by the despreading circuitry immediately preceding the given slot.

摘要翻译： 一种无线通信系统（10）。 该系统包括用户站（12）。 用户站包括解扩电路（22），用于在发射站（14）处接收和解扩从至少第一发射天线（A121）和第二发射天线（A122）接收的多个时隙。 多个时隙中的每一个包括包括第一组导频符号的第一信道（DPCH）和包括第二组导频符号的第二信道（PCCPCH）。 用户站还包括用于测量来自第一发射天线的多个时隙中的每个给定时隙的第一信道测量（α1，n）以及响应给定时隙中的第一组导频符号的电路（50）。 用户站还包括用于测量来自第二发射天线的多个时隙中的每个给定时隙的第二信道测量（α2，n）以及响应给定时隙中的第二组导频符号的电路（50）。 用户站还包括用于响应于第一信道测量和给定时隙的第二信道测量而在多个时隙中针对每个给定时隙测量相位差值（＆phgr; 2（n））的电路（52） 响应于相对于由紧接在给定时隙之前的解扩电路接收的时隙的给定时隙的九十度旋转。

公开(公告)号：US07680216B2

公开(公告)日：2010-03-16

申请号：US10408941

申请日：2003-04-08

申请人： Suparna Datta ,  Anand G. Dabak ,  Timothy M. Schmidl

发明人： Suparna Datta ,  Anand G. Dabak ,  Timothy M. Schmidl

IPC分类号： H04L25/06

CPC分类号： H04L1/0072 ,  H03M13/3738 ,  H03M13/41 ,  H04L1/0054 ,  H04L1/0069

摘要： A technique is provided for implementing adaptive thresholds associated with HS-SCCH detection schemes; and when applied to any HS-SCCH detection scheme, the resulting false alarm probability curves are more robust to amplitude variations of the different shared control channels. The technique has low computational complexity and low storage requirements for the estimator. Such lower complexity detection schemes have been found to outperform more complex schemes when adaptive thresholds are applied.

摘要翻译： 提供了一种用于实现与HS-SCCH检测方案相关联的自适应阈值的技术; 并且当应用于任何HS-SCCH检测方案时，所得到的假警报概率曲线对于不同共享控制信道的幅度变化更加鲁棒。 该技术对于估计器具有低计算复杂度和低存储要求。 在应用自适应阈值时，已经发现这种较低复杂度的检测方案优于更复杂的方案。

公开(公告)号：US20100056079A1

公开(公告)日：2010-03-04

申请号：US12554562

申请日：2009-09-04

申请人： Eko N. Onggosanusi ,  Runhua Chen ,  Anand G. Dabak

发明人： Eko N. Onggosanusi ,  Runhua Chen ,  Anand G. Dabak

IPC分类号： H04B1/034 ,  G06F3/033

CPC分类号： H04L1/1819 ,  H04L1/0025 ,  H04L1/0036 ,  H04L1/1887 ,  H04W72/042

摘要： A transmitter is for use with a cellular communication network and includes a downlink control information (DCI) configuration unit that designates a DCI format for a downlink transmission selected from a first DCI format intended for a single transport block contiguous resource block transmission and a second DCI format intended for a dual transport block transmission available for spatial multiplexing. The transmitter also includes a retransmission coordination unit configured to facilitate a retransmission for the downlink transmission of a transport block corresponding to the first DCI format using the second DCI format or one of the dual transport blocks corresponding to the second DCI format using the first DCI format, based on a retransmission rule.

摘要翻译： 发射机用于蜂窝通信网络，并且包括下行链路控制信息（DCI）配置单元，其指定用于从用于单个传输块连续资源块传输的第一DCI格式中选择的下行链路传输的DCI格式，以及第二DCI 用于可用于空间复用的双传输块传输的格式。 所述发射机还包括：重发协调单元，被配置为使用所述第二DCI格式或与所述第二DCI格式相对应的所述双传输块中的一个，使用所述第一DCI格式促进对与所述第一DCI格式相对应的传输块的下行链路传输的重传 ，基于重传规则。

公开(公告)号：US20100020684A1

公开(公告)日：2010-01-28

申请号：US12571735

申请日：2009-10-01

申请人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Anand G. Dabak

发明人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Anand G. Dabak

IPC分类号： H04W4/00 ,  H04L12/26

CPC分类号： H04L5/023

摘要： System and method for providing multiple access in a multi-band, orthogonal frequency division multiplexed (multi-band-OFDM) communications system. A preferred embodiment comprises determining a transmission bandwidth to support a performance requirement and configuring transmission bands in the multi-band-OFDM communications system based upon the transmission bandwidth, wherein the transmission bands may be made up of smaller transmission bands bonded together. Further comprising initializing communications with the configured transmission bands. The use of bonded transmission bands can provide increased data rates and/or increased range performance.

摘要翻译： 用于在多频带正交频分复用（多频带OFDM）通信系统中提供多址的系统和方法。 优选实施例包括确定传输带宽以支持性能要求，并且基于传输带宽来配置多频带OFDM通信系统中的传输频带，其中传输频带可由较小的传输频带组合在一起。 还包括初始化与配置的传输频带的通信。 使用粘合的传输带可以提供增加的数据速率和/或增加的范围性能。

公开(公告)号：US07502591B2

公开(公告)日：2009-03-10

申请号：US09942192

申请日：2001-08-29

申请人： Anand G. Dabak ,  Timothy M. Schmidl ,  Mohammed Nafie

发明人： Anand G. Dabak ,  Timothy M. Schmidl ,  Mohammed Nafie

IPC分类号： H04B7/00

CPC分类号： H04W92/02 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06

摘要： A communication system 100 allows for heterogeneous piconets/scattenets 100 where in multiple modes 110, 112 of transmission, one of Bluetooth 110 and one or more other modes of transmission 112 are possible. While at the same time maintaining synchronization between all the different modes of transmission 110, 112 in a given piconet and across a scatternet 100. This allows for a communication device that can communicate using a plurality of transmission modes depending on the communication needs of the device.

摘要翻译： 通信系统100允许异构微微网/散射100，其中在多模式110,112的传输，蓝牙110和一个或多个其它传输模式112之一是可能的。 同时在给定的微微网和跨网络100的同时保持所有不同的传输模式110,112之间的同步。这允许根据设备的通信需要使用多种传输模式进行通信的通信设备 。

公开(公告)号：US07463700B2

公开(公告)日：2008-12-09

申请号：US11681088

申请日：2003-03-01

申请人： Anand G. Dabak ,  Eko N. Onggosanusi

发明人： Anand G. Dabak ,  Eko N. Onggosanusi

IPC分类号： H04L27/00 ,  H04L27/06 ,  H04B1/69

CPC分类号： H04B7/0615 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0645 ,  H04B7/0654 ,  H04B7/0857 ,  H04B17/104 ,  H04B17/24

摘要： A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A121) and a second transmit antenna (A122) at a transmitting station (14). Each of the plurality of slots comprises a first channel (DPCH) comprising a first set of pilot symbols and a second channel (PCCPCH) comprising a second set of pilot symbols. The user station further comprises circuitry (50) for measuring a first channel measurement (α1,n) for each given slot in the plurality of slots from the first transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (50) for measuring a second channel measurement (α2,n) for each given slot in the plurality of slots from the second transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (52) for measuring a phase difference value (φ2(n)) for each given slot in the plurality of slots in response to the first channel measurement and the second channel measurement for the given slot and in response to a ninety degree rotation of the given slot relative to a slot which was received by the despreading circuitry immediately preceding the given slot.

摘要翻译： 一种无线通信系统（10）。 该系统包括用户站（12）。 用户站包括解扩电路（22），用于在发射站（14）处接收和解扩从至少第一发射天线（A121）和第二发射天线（A122）接收的多个时隙。 多个时隙中的每一个包括包括第一组导频符号的第一信道（DPCH）和包括第二组导频符号的第二信道（PCCPCH）。 用户站还包括用于测量来自第一发射天线的多个时隙中的每个给定时隙的第一信道测量（α1，n）以及响应于给定时隙中的第一组导频符号的电路（50）。 用户站还包括电路（50），用于响应于给定时隙中的第一组导频符号，测量来自第二发射天线的多个时隙中的每个给定时隙的第二信道测量（α2，n）。 用户站还包括电路（52），用于响应于给定时隙的第一信道测量和第二信道测量以及响应于第二信道测量而测量多个时隙中的每个给定时隙的相位差值（phi2（n））， 给定时隙相对于由紧接在给定时隙之前的解扩电路接收的时隙的九十度旋转。

公开(公告)号：US07440484B2

公开(公告)日：2008-10-21

申请号：US09838606

申请日：2001-04-19

申请人： Timothy M. Schmidl ,  Anand G. Dabak ,  Mohammed Nafie ,  Oren E. Eliezer

发明人： Timothy M. Schmidl ,  Anand G. Dabak ,  Mohammed Nafie ,  Oren E. Eliezer

IPC分类号： H04B1/713

CPC分类号： H04B1/7143 ,  H04B1/715 ,  H04B2001/7154 ,  H04L1/0001 ,  H04L1/12 ,  H04L5/023 ,  H04W24/00 ,  H04W28/06 ,  H04W84/20

摘要： A frequency hopping system such as a Bluetooth system (300) can reduce the number of RF channels it hops during a normal hopping sequence cycle providing for a Reduced Hopping Sequence (RHS). A communication unit operating in the system such as the Bluetooth master unit (302) determines if any of the RF channels has interference. If any of the channels has interference, the Bluetooth master sends a message to one or more slave units (304, 306) informing them of which channels will be removed from the hopping sequence due to potential interference problems. The units will then use the new RHS for their transmissions, thus avoiding the interference problems (e.g., both avoiding interference in the system's receivers and avoiding creating interference on frequencies that are already occupied by other neighboring systems).

摘要翻译： 诸如蓝牙系统（300）的跳频系统可以减少在针对缩减跳跃序列（RHS）的正常跳频序列周期期间跳频的RF信道的数量。 在诸如蓝牙主机单元（302）的系统中操作的通信单元确定是否有任何RF信道具有干扰。 如果任何信道具有干扰，则蓝牙主机向一个或多个从单元（304,306）发送消息，通知它们由于潜在的干扰问题而将哪些信道从跳频序列中移除。 然后，这些单元将使用新的RHS进行传输，从而避免干扰问题（例如，既避免系统接收机中的干扰，又避免在其他相邻系统已经占用的频率上产生干扰）。