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公开(公告)号：US20080101502A1
公开(公告)日：2008-05-01
申请号：US11860529
申请日：2007-09-24
IPC分类号： H04K1/02
CPC分类号： H04L27/2623 , H04L1/0041 , H04L1/06
摘要： A technique for PAR reduction involves producing an optimized clipping pulse. The optimized clipping pulse may be designed to meet certain requirements, such as a spectral mask target or an EVM target, when applied to a signal.
摘要翻译： 用于PAR减少的技术涉及产生优化的限幅脉冲。 当施加到信号时，优化的限幅脉冲可被设计为满足某些要求，例如光谱掩模目标或EVM目标。
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公开(公告)号：US20100020907A1
公开(公告)日：2010-01-28
申请号：US12299470
申请日：2007-05-04
CPC分类号： H04L25/03057 , H04B7/0848 , H04B7/086 , H04L2025/03426
摘要： A technique for processing received signals in multiple-antenna systems. Received signals from the different antennas may be amplified by a Low Noise Amplifier (LNA) and time-multiplexed by a switch to form a single analog signal. The time-multiplexed analog signal is down-converted and processed using a single RF chain for each signal component. This may result in an N-fold decrease in hardware in multiple antenna receiver systems.
摘要翻译： 一种在多天线系统中处理接收信号的技术。 来自不同天线的接收信号可以由低噪声放大器（LNA）放大，并由开关进行时分复用以形成单个模拟信号。 时分多路复用的模拟信号用于每个信号分量的单个RF链进行下变频和处理。 这可能导致多个天线接收机系统中的硬件减少N倍。
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公开(公告)号：US08446998B2
公开(公告)日：2013-05-21
申请号：US12299470
申请日：2007-05-04
CPC分类号： H04L25/03057 , H04B7/0848 , H04B7/086 , H04L2025/03426
摘要： A technique for processing received signals in multiple-antenna systems. Received signals from the different antennas may be amplified by a Low Noise Amplifier (LNA) and time-multiplexed by a switch to form a single analog signal. The time-multiplexed analog signal is down-converted and processed using a single RF chain for each signal component. This may result in an N-fold decrease in hardware in multiple antenna receiver systems.
摘要翻译： 一种在多天线系统中处理接收信号的技术。 来自不同天线的接收信号可以由低噪声放大器（LNA）放大，并由开关进行时分复用以形成单个模拟信号。 时分多路复用的模拟信号用于每个信号分量的单个RF链进行下变频和处理。 这可能导致多个天线接收机系统中的硬件减少N倍。
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公开(公告)号：US08111790B2
公开(公告)日：2012-02-07
申请号：US12288569
申请日：2008-10-20
CPC分类号： H04B17/345
摘要： A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ2, can be used to represent the estimated noise and interference power, and σ2 can be used to modify a received signal to ameliorate the effects of noise and interference. σ2 can be adjusted in response to partial interference, and can be represented by the formula: σ2=σN2+q σI2, where σN2 is “noise power,” σI2 is “interference power,” and q is an interference correction factor.
摘要翻译： 一种技术对使用干扰估计和相关功率的解调/去映射处理中使用的噪声功率加权。 使用这种技术可以改善部分干扰的影响。 例如，可以使用值＆sgr; 2来表示估计的噪声和干扰功率，并且可以使用2来修改接收到的信号以改善噪声和干扰的影响。 ＆sgr; 2可以根据部分干扰进行调整，可以用公式表示：＆sgr; 2 =＆sgr; N2 + q＆sgr; I2，其中＆sgr; N2是“噪声功率”，＆sgr; I2是“干扰功率 ，“q是干扰校正因子。
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公开(公告)号：US08090060B2
公开(公告)日：2012-01-03
申请号：US11800357
申请日：2007-05-04
CPC分类号： H04L25/03057 , H04B7/0848 , H04B7/086 , H04L2025/03426
摘要： A technique for low-complexity high-performance coherent demodulation of GFSK signals involves utilizing a novel phase and frequency tracking mechanism coupled with a trellis search technique to track signal memory in the demodulation process. A method according to the technique may include modeling modulation based upon a trellis. The method may further include estimating unknown parameters, selecting a maximum likelihood path through the trellis, and mapping the maximum likelihood path to an output bit sequence. The technique is also applicable to DSPK and other applicable known or convenient protocols.
摘要翻译： 用于GFSK信号的低复杂度高性能相干解调的技术涉及利用与网格搜索技术相结合的新型相位和频率跟踪机制来在解调过程中跟踪信号存储器。 根据该技术的方法可以包括基于网格的建模调制。 该方法还可以包括估计未知参数，选择通过网格的最大似然路径，以及将最大似然路径映射到输出比特序列。 该技术也适用于DSPK和其他适用的已知或方便的协议。
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公开(公告)号：US08073073B2
公开(公告)日：2011-12-06
申请号：US11860529
申请日：2007-09-24
IPC分类号： H04K1/02
CPC分类号： H04L27/2623 , H04L1/0041 , H04L1/06
摘要： A technique for PAR reduction involves producing an optimized clipping pulse. The optimized clipping pulse may be designed to meet certain requirements, such as a spectral mask target or an EVM target, when applied to a signal.
摘要翻译： 用于PAR减少的技术涉及产生优化的限幅脉冲。 当施加到信号时，优化的限幅脉冲可被设计为满足某些要求，例如光谱掩模目标或EVM目标。
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公开(公告)号：US20090116541A1
公开(公告)日：2009-05-07
申请号：US12288569
申请日：2008-10-20
CPC分类号： H04B17/345
摘要： A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ2, can be used to represent the estimated noise and interference power, and σ2 can be used to modify a received signal to ameliorate the effects of noise and interference. σ2 can be adjusted in response to partial interference, and can be represented by the formula: σ2=σN2+q σI2, where σN2 is “noise power,” σI2 is “interference power,” and q is an interference correction factor.
摘要翻译： 一种技术对使用干扰估计和相关功率的解调/去映射处理中使用的噪声功率加权。 使用这种技术可以改善部分干扰的影响。 例如，可以使用sigma2来表示估计的噪声和干扰功率，并且可以使用sigma2来修改接收到的信号以改善噪声和干扰的影响。 sigma2可以响应于部分干扰来调整，并且可以由公式表示：sigma2 = sigmaN2 + q sigmaI2，其中sigmaN2是“噪声功率”，σI2是“干扰功率”，q是干扰校正因子。
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公开(公告)号：US20070268980A1
公开(公告)日：2007-11-22
申请号：US11800357
申请日：2007-05-04
IPC分类号： H04L23/02
CPC分类号： H04L25/03057 , H04B7/0848 , H04B7/086 , H04L2025/03426
摘要： A technique for low-complexity high-performance coherent demodulation of GFSK signals involves utilizing a novel phase and frequency tracking mechanism coupled with a trellis search technique to track signal memory in the demodulation process. A method according to the technique may include modeling modulation based upon a trellis. The method may further include estimating unknown parameters, selecting a maximum likelihood path through the trellis, and mapping the maximum likelihood path to an output bit sequence. The technique is also applicable to DSPK and other applicable known or convenient protocols.
摘要翻译： 用于GFSK信号的低复杂度高性能相干解调的技术涉及利用与网格搜索技术相结合的新型相位和频率跟踪机制来在解调过程中跟踪信号存储器。 根据该技术的方法可以包括基于网格的建模调制。 该方法还可以包括估计未知参数，选择通过网格的最大似然路径，以及将最大似然路径映射到输出比特序列。 该技术也适用于DSPK和其他适用的已知或方便的协议。
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公开(公告)号：US20160154116A1
公开(公告)日：2016-06-02
申请号：US13815861
申请日：2013-03-15
CPC分类号： G01S19/246
摘要： A satellite-based positioning receiver is provided that is configured to combine non-concurrent sets of pseudoranges all taken at a common location to determine at least a 2D position of the common location.
摘要翻译： 提供了一种基于卫星的定位接收器，其被配置为组合在公共位置处获取的非并发的伪距集合，以确定公共位置的至少2D位置。
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10.发明申请Signal processing techniques for improving the sensitivity of GPS receivers 审中-公开用于提高GPS接收机灵敏度的信号处理技术公开(公告)号：US20110080321A1
公开(公告)日：2011-04-07
申请号：US12587100
申请日：2009-10-02
IPC分类号： G01S19/24
摘要： The use of multiple GPS sensors provides the conceptual framework for novel techniques for reducing the minimum signal strength required by a GPS assistance system to acquire and accurately track GPS satellites at or near the horizon. A strong signal attenuation system for synthesizing GPS satellite-specific I/F signals, enabling more efficient and effective acquisition of GPS satellites, is disclosed, comprising N+1 reference GPS sensors, each with an omni-directional antenna and front end, for down converting composite GPS satellite signals, and strong signal suppression (SSS) means for synthesizing, from the I/F signals produced by the N+1 reference GPS sensors, a set of one or more I/F signals (corresponding to a set of designated satellites), each with at least N of the strongest potentially-interfering satellite signals suppressed.
摘要翻译： 使用多个GPS传感器提供了用于降低GPS辅助系统所需的最小信号强度以获取并准确地跟踪在地平线附近或附近的GPS卫星的新技术的概念框架。 公开了一种用于合成GPS卫星专用I / F信号的强信号衰减系统，使得能够更有效和有效地获取GPS卫星，其包括N + 1个参考GPS传感器，每个具有全向天线和前端，用于向下 转换复合GPS卫星信号和强信号抑制（SSS）装置，用于根据由N + 1参考GPS传感器产生的I / F信号合成一组一个或多个I / F信号（对应于一组指定的 卫星），其中每个具有至少N个最强的潜在干扰卫星信号被抑制。
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