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公开(公告)号：US07295636B2
公开(公告)日：2007-11-13
申请号：US10747461
申请日：2003-12-29
IPC分类号： H03D1/04
CPC分类号： H04L25/0202
摘要： System and method for interference cancellation in a digital wireless communications system. A preferred embodiment comprises sampling a received signal wherein the received signal is real-valued, rotating the sampled received signal by a specified amount, extracting in-phase and quadrature phase streams from the rotated, sampled received signal, applying an interference suppression filter and combining the filtered streams. The output of the combining operation can be de-correlated (by whitening) if there is excessive correlation.
摘要翻译： 数字无线通信系统中干扰消除的系统和方法。 优选实施例包括对接收信号进行采样，其中接收到的信号是实值的，将采样的接收信号旋转指定量，从旋转的采样的接收信号中提取同相和正交相位流，应用干扰抑制滤波器和组合 过滤的流。 如果存在过度的相关性，组合操作的输出可以被去相关（通过白化）。
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22.发明授权Wireless communication system which uses ARQ packets to ACK a plurality of packets from an 802.15 superpacket 有权无线通信系统，其使用ARQ分组来从802.15超级分组ACK多个分组公开(公告)号：US06839325B2
公开(公告)日：2005-01-04
申请号：US09777221
申请日：2001-02-05
CPC分类号： H04L1/1664 , H04L1/0026 , H04L1/0054 , H04L1/006 , H04L1/1614 , H04L1/1819 , H04L1/1835 , H04L1/1874 , H04L1/188 , H04W24/00 , H04W24/06 , H04W28/04 , H04W28/06 , H04W28/22 , H04W48/16 , H04W72/02 , H04W84/10
摘要： Automatic repeat request (ARQ) operations can be implemented in wireless communications by sending (2401) a plurality of data packets in a superpacket, and responding (2430) with an acknowledgement packet that indicates which packets of the superpacket require retransmission.
摘要翻译： 可以通过在超级分组中发送（2401）多个数据分组来对无线通信中的自动重传请求（ARQ）进行操作，并响应（2430）确认分组，该确认分组指示超级分组的哪些分组需要重发。
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公开(公告)号：US08223867B2
公开(公告)日：2012-07-17
申请号：US09777203
申请日：2001-02-05
CPC分类号： H04L1/1664 , H04L1/0026 , H04L1/0054 , H04L1/006 , H04L1/1614 , H04L1/1819 , H04L1/1835 , H04L1/1874 , H04L1/188 , H04W24/00 , H04W24/06 , H04W28/04 , H04W28/06 , H04W28/22 , H04W48/16 , H04W72/02 , H04W84/10
摘要： A data encoding algorithm can be used (120) to generate overhead bits from original data bits, and the original data bits and overhead bits can be transmitted in respectively separate transmissions (121, 123), if the overhead bits are needed. At the receiver, the original data bits can be determined (125) from the received overhead bits, or the received data bits and the received overhead bits can be combined and decoded together (126) to produce the original data bits.
摘要翻译： 可以使用数据编码算法（120）从原始数据位产生开销比特，并且如果需要开销比特，则原始数据比特和开销比特可以分别在分别的传输（121,123）中发送。 在接收机处，可以从接收的开销比特确定原始数据比特（125），或者将接收的数据比特和接收的开销比特组合并解码（126）以产生原始数据比特。
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公开(公告)号：US08134996B2
公开(公告)日：2012-03-13
申请号：US11459313
申请日：2006-07-21
IPC分类号： H04J3/06
CPC分类号： H04L27/2613 , H04J11/0069 , H04L5/0007 , H04L27/2657 , H04L27/2662
摘要： The present invention provides a method of operating a base station transmitter. In one embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions, wherein the primary portion is common for all cells and the secondary portion is cell-specific and transmitting the cellular downlink synchronization signal. In another embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions wherein the primary portion employs a corresponding one of a plurality of different primary signals allocated to adjoining transmission cells. The method also includes further providing cell-specific information in the secondary portion and transmitting the cellular downlink synchronization signal. The present invention also provides a method of operating user equipment. The method includes receiving a cellular downlink synchronization signal having primary and secondary portions wherein the secondary portion provides cell-specific parameters and identifying and extracting the secondary portion.
摘要翻译： 本发明提供一种操作基站发射机的方法。 在一个实施例中，该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号，其中主要部分对于所有小区是公共的，并且次要部分是小区特定的，并且发送蜂窝下行链路同步信号。 在另一个实施例中，该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号，其中主要部分采用分配给相邻传输小区的多个不同主信号中的相应一个信号。 该方法还包括在次级部分中进一步提供小区特定信息并发送蜂窝下行同步信号。 本发明还提供了一种操作用户设备的方法。 该方法包括接收具有主要和次要部分的蜂窝下行链路同步信号，其中辅助部分提供小区特定参数并且识别和提取次要部分。
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公开(公告)号：US20110064029A1
公开(公告)日：2011-03-17
申请号：US12949442
申请日：2010-11-18
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： H04W88/02
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。
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26.发明申请HIGH DATA RATE CLOSED LOOP MIMO SCHEME COMBINING TRANSMIT DIVERSITY AND DATA MULTIPLEXING 有权高数据速率封闭环路MIMO方案组合传输多样性和数据多路复用公开(公告)号：US20100040172A1
公开(公告)日：2010-02-18
申请号：US12603127
申请日：2009-10-21
IPC分类号： H04L27/00
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 throughout.
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。 在天线子集上的多路复用符号流增强。
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公开(公告)号：US20080019350A1
公开(公告)日：2008-01-24
申请号：US11459313
申请日：2006-07-21
IPC分类号： H04J3/06
CPC分类号： H04L27/2613 , H04J11/0069 , H04L5/0007 , H04L27/2657 , H04L27/2662
摘要： The present invention provides a method of operating a base station transmitter. In one embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions, wherein the primary portion is common for all cells and the secondary portion is cell-specific and transmitting the cellular downlink synchronization signal. In another embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions wherein the primary portion employs a corresponding one of a plurality of different primary signals allocated to adjoining transmission cells. The method also includes further providing cell-specific information in the secondary portion and transmitting the cellular downlink synchronization signal. The present invention also provides a method of operating user equipment. The method includes receiving a cellular downlink synchronization signal having primary and secondary portions wherein the secondary portion provides cell-specific parameters and identifying and extracting the secondary portion.
摘要翻译： 本发明提供一种操作基站发射机的方法。 在一个实施例中，该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号，其中主要部分对于所有小区是公共的，并且次要部分是小区特定的，并且发送蜂窝下行链路同步信号。 在另一个实施例中，该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号，其中主要部分采用分配给相邻传输小区的多个不同主信号中的相应一个信号。 该方法还包括在次级部分中进一步提供小区特定信息并发送蜂窝下行同步信号。 本发明还提供了一种操作用户设备的方法。 该方法包括接收具有主要和次要部分的蜂窝下行链路同步信号，其中辅助部分提供小区特定参数并且识别和提取次要部分。
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28.发明授权Interferer detection and channel estimation for wireless communications networks 有权无线通信网络的干扰检测和信道估计公开(公告)号：US07218894B2
公开(公告)日：2007-05-15
申请号：US10738508
申请日：2003-12-17
IPC分类号： H04B17/00
CPC分类号： H04L25/03006 , H04L25/0228 , H04L25/0244
摘要： System and method for improving performance of digital wireless communications systems in the presence of interferers. A preferred embodiment comprises generating a list of hypotheses from a list of known interferers and timing offsets, receiving a signal transmitted over-the-air, computing an error variance for each hypothesis, and selecting the hypothesis with the lowest error variance. The hypothesis can then be used to extract data from the received signal.
摘要翻译： 在存在干扰源的情况下提高数字无线通信系统的性能的系统和方法。 优选实施例包括从已知干扰源和定时偏移的列表生成假设列表，接收通过空中传输的信号，计算每个假设的误差方差，以及选择具有最低误差方差的假设。 然后可以使用该假设从接收信号中提取数据。
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29.发明授权Reduced subset scan and dual frequency wakeup for bluetooth inquiry operation 有权减少子集扫描和双频唤醒，进行蓝牙查询操作公开(公告)号：US07184458B2
公开(公告)日：2007-02-27
申请号：US09953533
申请日：2001-09-12
申请人： Timothy M. Schmidl , Anand G. Dabak
发明人： Timothy M. Schmidl , Anand G. Dabak
IPC分类号： H04B1/713
摘要： An inquiry message is transmitted successively on each of a first plurality of transmit frequencies (44–48) and thereafter successively on each of a second plurality of transmit frequencies (51), in order to ensure that a first wireless communication apparatus that listens on one of the transmit frequencies will receive the inquiry message. The first plurality of transmit frequencies can also be ensured (25–28) to include a frequency on which a second wireless communication apparatus is listening for the inquiry message. With respect to reception of an inquiry message that is transmitted successively on each of first and thereafter second pluralities of transmit frequencies, after receipt (61) of the initial inquiry message and subsequent expiration of a corresponding backoff period (62), the inquiry message is first listened for on a first frequency of the first plurality of transmit frequencies for a predetermined time (63). If the inquiry message is not received on the first frequency during the first listening operation, the inquiry message is then listened for on a second frequency of the second plurality of transmit frequencies for a predetermined time (64).
摘要翻译： 在第一多个发射频率（44-48）中的每一个上依次发送查询消息，然后在第二多个发射频率（51）中的每一个上依次发送一个查询消息，以便确保第一个无线通信装置 的发送频率将接收到查询消息。 还可以确保第一多个发射频率（25-28）以包括第二无线通信装置在其上侦听查询消息的频率。 对于在第一和第二多个发射频率的每一个上连续发送的询问消息的接收，在初始询问消息的接收（61）和相应的退避周期（62）的随后到期之后，查询消息是 首先在第一多个发射频率的第一频率上预定预定时间（63）。 如果在第一次收听操作期间没有在第一频率上接收到查询消息，则在第二多个发射频率的第二频率上预定查询消息一段预定时间（64）。
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30.发明授权Beam forming for transmit using bluetooth modified hopping sequences (BFTBMH) 有权使用蓝牙修改的跳频序列（BFTBMH）进行发送的波束形成公开(公告)号：US07164704B1
公开(公告)日：2007-01-16
申请号：US09489668
申请日：2000-01-24
IPC分类号： H04B1/713
CPC分类号： H01Q3/22 , H01Q1/2291 , H04B1/713 , H04B7/0615 , H04B7/0697 , H04B7/0848 , H04W84/18
摘要： A communication circuit (28) is designed with a signal processing circuit (370) arranged to produce a first plurality of data signals and receive a second plurality of data signals. A transmit circuit (364) is coupled to receive the first plurality of data signals and transmit each data signal of the first plurality of data signals on a respective transmit frequency in a predetermined sequence of transmit frequencies. A receive circuit (362) is coupled to receive each data signal of the second plurality of data signals from a remote transmitter on the respective transmit frequency in the predetermined sequence. The receive circuit applies the second plurality of data signals to the signal processing circuit.
摘要翻译： 通信电路（28）被设计成具有被配置为产生第一多个数据信号并接收第二多个数据信号的信号处理电路（370）。 发射电路（364）被耦合以接收第一多个数据信号，并且以预定的发射频率的顺序在相应的发射频率上发射第一多个数据信号的每个数据信号。 接收电路（362）被耦合以便以预定顺序在相应发射频率上从远程发射机接收第二多个数据信号的每个数据信号。 接收电路将第二多个数据信号施加到信号处理电路。
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