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公开(公告)号：US07715798B2
公开(公告)日：2010-05-11
申请号：US11468394
申请日：2006-08-30
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。
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12.发明授权Adaptive thresholds for high speed downlink shared control channel (HS-SCCH) (part I) detection schemes 有权高速下行链路共享控制信道（HS-SCCH）（第一部分）检测方案的自适应阈值公开(公告)号：US07680216B2
公开(公告)日：2010-03-16
申请号：US10408941
申请日：2003-04-08
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。
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公开(公告)号：US07502591B2
公开(公告)日：2009-03-10
申请号：US09942192
申请日：2001-08-29
IPC分类号： H04B7/00
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 。
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公开(公告)号：US07440484B2
公开(公告)日：2008-10-21
申请号：US09838606
申请日：2001-04-19
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）。
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公开(公告)号：US07349379B2
公开(公告)日：2008-03-25
申请号：US10640184
申请日：2003-08-13
CPC分类号： H04B7/0634 , H04B7/0654
摘要： Soft estimate normalization for weighted multiantenna high-order modulation data channel together with separate antenna pilot channels using averaging in first time slots of a transmission time interval with corrections for subsequent time slots.
摘要翻译： 对于加权多天线高阶调制数据信道的软估计归一化，以及使用在传输时间间隔的第一时隙中对后续时隙进行校正的平均的单独的天线导频信道。
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16.发明授权Multiuser detection for wireless communications systems in the presence of interference 有权在存在干扰的情况下对无线通信系统进行多用户检测公开(公告)号：US07302233B2
公开(公告)日：2007-11-27
申请号：US10732978
申请日：2003-12-11
IPC分类号： H04B17/00
CPC分类号： H04L25/0204 , H04L25/0228 , H04L25/0244
摘要： System and method for detecting transmissions from multiple users in a digital wireless communications system in the presence of interference. A preferred embodiment comprises derotating a received signal by a specified amount, determining channel estimates, which can include the determination of the number of users (interferers plus a desired user), and extracting information transmitted by the desired user from the received signal. Successive and parallel multiuser detection schemes are provided for extracting the information from the received signal.
摘要翻译： 用于在存在干扰的情况下在数字无线通信系统中检测来自多个用户的传输的系统和方法。 优选实施例包括将接收到的信号扭曲指定量，确定信道估计，其可以包括确定用户数量（干扰源加上期望的用户），以及从接收到的信号中提取期望用户发送的信息。 提供了连续和并行的多用户检测方案，用于从接收信号中提取信息。
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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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18.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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19.发明授权Wireless communications system with combining of multiple paths selected from correlation to the primary synchronization channel 有权无线通信系统，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
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。
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公开(公告)号：US06166622A
公开(公告)日：2000-12-26
申请号：US181109
申请日：1998-10-28
摘要： A communication circuit is designed with a processing circuit (11) coupled to receive a plurality of first control signals (402, 408) from a source external to the communication circuit. The processing circuit produces a second control signal (432, 434) and a second power control (422, 436) signal during each of a plurality of predetermined time periods. The second power control signal is determined by a corresponding first control signal from said plurality of first control signals. The second power control signal is produced proximate the second control signal. A serial circuit is coupled to receive the second control signal and the second power control signal during a respective predetermined time period. The serial circuit produces the second control signal proximate the second power control signal.
摘要翻译： 通信电路被设计成具有耦合以从通信电路外部的源接收多个第一控制信号（402,408）的处理电路（11）。 处理电路在多个预定时间段的每一个期间产生第二控制信号（432,434）和第二功率控制（422,436）信号。 第二功率控制信号由来自所述多个第一控制信号的对应的第一控制信号确定。 在第二控制信号附近产生第二功率控制信号。 串联电路被耦合以在相应的预定时间段期间接收第二控制信号和第二功率控制信号。 串行电路产生靠近第二功率控制信号的第二控制信号。
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