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1.发明申请公开(公告)号：US20110255638A1
公开(公告)日：2011-10-20
申请号：US12760839
申请日：2010-04-15
IPC分类号： H04L27/00
CPC分类号： H04L27/38 , H04L25/0242 , H04L25/03229 , H04L27/3416 , H04L2025/03388 , H04L2025/03414
摘要： In a receiver with a multi-stage equalizer, such as an SLI equalizer, cumulative symbol estimates generated in one or more early stages of the equalizer are used as effective pilot symbols to improve channel estimation for later stages.
摘要翻译： 在具有多级均衡器（诸如SLI均衡器）的接收机中，在均衡器的一个或多个早期阶段中生成的累积符号估计值被用作有效的导频符号，以改进稍后阶段的信道估计。
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2.发明授权公开(公告)号：US08396168B2
公开(公告)日：2013-03-12
申请号：US12760839
申请日：2010-04-15
IPC分类号： H04L27/00
CPC分类号： H04L27/38 , H04L25/0242 , H04L25/03229 , H04L27/3416 , H04L2025/03388 , H04L2025/03414
摘要： In a receiver with a multi-stage equalizer, such as an SLI equalizer, cumulative symbol estimates generated in one or more early stages of the equalizer are used as effective pilot symbols to improve channel estimation for later stages.
摘要翻译： 在具有多级均衡器（诸如SLI均衡器）的接收机中，在均衡器的一个或多个早期阶段中生成的累积符号估计值被用作有效的导频符号，以改进稍后阶段的信道估计。
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公开(公告)号：US20130237212A1
公开(公告)日：2013-09-12
申请号：US13414932
申请日：2012-03-08
CPC分类号： H04B7/0626 , H04B7/022 , H04B7/0434 , H04B7/0452 , H04B7/0663 , H04B17/373 , H04L1/0019 , H04L25/03898 , H04L25/03949
摘要： A system and method in which a base station treats the Channel State Information (CSI) from wireless terminals as only partially-stale, and exploits this partially-stale CSI to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder. The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments thus combine the benefits of the stale feedback scheme with precoding to match the channel. Consequently, the signal received at a terminal is better conditioned, thereby providing a greater overall boost in performance of the communication arrangement between the base station and the terminal. The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals.
摘要翻译： 一种基站将无线终端的信道状态信息（CSI）仅处于部分状态的系统和方法，并利用该部分陈旧的CSI来预测来自信道的旧估计的当前信道。 然后预测的通道用于设计预编码器。 基站用预编码器对发射信号进行整形，使其尽可能接近当前信道。 因此，特定的实施例将陈旧反馈方案的优点与预编码相结合以匹配信道。 因此，在终端处接收的信号被更好地调节，从而对基站和终端之间的通信装置的性能提供更大的整体提升。 部分陈旧的CSI的使用对于具有大量简单终端的密集网络来说可能是重要的。
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公开(公告)号：US5968198A
公开(公告)日：1999-10-19
申请号：US699101
申请日：1996-08-16
IPC分类号： H04L1/00 , H03M13/09 , H03M13/13 , H03M13/15 , H03M13/29 , H03M13/37 , H03M13/45 , H04L1/16 , H04L1/18 , H04L25/06 , H03M13/00
CPC分类号： H04L25/067 , H03M13/13 , H03M13/27 , H03M13/2906 , H03M13/2933 , H03M13/3738 , H03M13/456 , H03M13/6306 , H04L1/0065 , H04L1/0071 , H03M13/09 , H03M13/6331 , H04L1/1809 , H04L1/1816
摘要： A coding system is disclosed wherein the receive side includes a decoder capable of producing, in addition to the hard information decoded output, either or both symbol and/or bit soft information values. For a certain information bit position, a value proportional to the joint probability that a received symbol and the set of all hypothesized transmitted codewords that led to the estimated or detected hard information output is calculated. The calculated probabilities with respect to plural codewords having a zero in that certain information bit position are compared to the calculated probabilities with respect to the plural codewords having a one in that certain information bit position. The result of the comparison provides an indication of whether the hard information output in that same information bit position is more likely a one or a zero. The output soft information values are further processed in comparison to a preset threshold, with instances exceeding the threshold triggering block rejections and/or retransmissions.
摘要翻译： 公开了一种编码系统，其中接收端包括能够产生除硬信息解码输出之外的符号和/或位软信息值之一或两者的解码器。 对于某个信息位位置，计算与接收到的符号和导致估计或检测到的硬信息输出的所有假设的发送码字的集合的联合概率成比例的值。 将具有该特定信息位位置的零的多个码字的计算概率与该特定信息位位置中具有一个的多个码字的计算概率进行比较。 比较结果提供了在该相同信息位位置中的硬信息输出是否更可能是一个或零的指示。 与预设阈值相比，输出软信息值进一步处理，其中实例超过阈值触发块拒绝和/或重传。
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公开(公告)号：US08750913B2
公开(公告)日：2014-06-10
申请号：US13324645
申请日：2011-12-13
IPC分类号： H04B7/06
CPC分类号： H04B7/0691 , H04B7/0452 , H04B7/0665 , H04B7/0697 , H04L25/0202
摘要： With the asymmetric resource sharing disclosed herein, a base station transmits fewer information symbols at some transmission times to one or more mobile terminals than to other mobile terminals at other transmission times. After transmitting the information symbols, the base station receives channel estimates from the mobile terminals, which the base station then use to generate synthesized signals representing estimates of the signals received at the mobile terminals. The base station subsequently combines complementary pairs of the synthesized signals to generate combined signals and transmits at least one of the combined signals to implement at least one virtual antenna for at least one of the mobile terminals.
摘要翻译： 利用这里公开的不对称资源共享，基站在一些传输时间将更少的信息符号发送到一个或多个移动终端，而不是在其他传输时间的其他移动终端。 在发送信息符号之后，基站从移动终端接收信道估计，基站然后用于产生表示在移动终端处接收的信号的估计的合成信号。 基站随后组合互补的合成信号对以产生组合信号并发送组合信号中的至少一个，以便为至少一个移动终端实现至少一个虚拟天线。
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6.发明授权Method and apparatus for DS-CDMA interference suppression using code-specific combining 有权使用代码特定组合的DS-CDMA干扰抑制的方法和装置公开(公告)号：US08432952B2
公开(公告)日：2013-04-30
申请号：US10720492
申请日：2003-11-24
IPC分类号： H04B1/707
CPC分类号： H04B1/7107 , H04B1/712 , H04B2201/709727 , H04J13/0048
摘要： Interference, such as inter-symbol interference, from a symbol of interest in a RAKE receiver is reduced. The RAKE receiver comprises a plurality of RAKE fingers, a processor, and a combiner. The plurality of RAKE fingers despread symbols received over multiple paths of a multi-path channel. The processor determines cross-correlations between symbol waveforms from different symbols and multiple paths. The combiner combines the despread symbols using the cross-correlations to reduce interference from the symbol of interest.
摘要翻译： 来自RAKE接收机中感兴趣的符号的干扰，诸如符号间干扰，减少了。 RAKE接收机包括多个RAKE指，处理器和组合器。 多个RAKE手指解扩在多路径信道的多个路径上接收的符号。 处理器确定来自不同符号和多个路径的符号波形之间的互相关。 组合器使用互相关组合解扩符号，以减少来自感兴趣符号的干扰。
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公开(公告)号：US20090245330A1
公开(公告)日：2009-10-01
申请号：US12056035
申请日：2008-03-26
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B2201/709727 , H04L1/0631 , H04L1/0643
摘要： A Generalized Rake (G-Rake) receiver is adapted for Golden code reception in a CDMA system. Signals transmitted by two or more transmit antennas are received at two or more receiver antennas. The signal from each receiver antenna is despread, and channel estimation is performed for each transmit antenna. G-Rake combining weights are calculated based on impairment correlation across G-Rake fingers and channel coefficients corresponding to each transmit antenna. The despread values from each symbol period are combined over a plurality of symbol periods based on the combining weights. The combined values are processed using coefficients derived from the Golden number to generate a set of decision variables, and the Golden encoded symbols are jointly detected from the decision variables. In some embodiments, spherical decoding and triangularization significantly simplify the decoding problem formulation.
摘要翻译： 广义耙（G-Rake）接收机适用于CDMA系统中的黄金码接收。 由两个或多个发射天线发射的信号在两个或多个接收机天线处被接收。 来自每个接收机天线的信号被解扩展，并且对于每个发射天线执行信道估计。 基于G-Rake指针和对应于每个发射天线的信道系数的损伤相关计算G-Rake组合权重。 基于组合权重，从多个符号周期组合来自每个符号周期的解扩值。 使用从黄金数字导出的系数来处理组合值以生成一组决策变量，并且从决策变量共同检测到黄金编码符号。 在一些实施例中，球面解码和三角化显着简化了解码问题公式。
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公开(公告)号：US20130148634A1
公开(公告)日：2013-06-13
申请号：US13324645
申请日：2011-12-13
IPC分类号： H04W36/00
CPC分类号： H04B7/0691 , H04B7/0452 , H04B7/0665 , H04B7/0697 , H04L25/0202
摘要： With the asymmetric resource sharing disclosed herein, a base station transmits fewer information symbols at some transmission times to one or more mobile terminals than to other mobile terminals at other transmission times. After transmitting the information symbols, the base station receives channel estimates from the mobile terminals, which the base station then use to generate synthesized signals representing estimates of the signals received at the mobile terminals. The base station subsequently combines complementary pairs of the synthesized signals to generate combined signals and transmits at least one of the combined signals to implement at least one virtual antenna for at least one of the mobile terminals.
摘要翻译： 利用这里公开的不对称资源共享，基站在一些传输时间将更少的信息符号发送到一个或多个移动终端，而不是在其他传输时间的其他移动终端。 在发送信息符号之后，基站从移动终端接收信道估计，基站然后用于产生表示在移动终端处接收的信号的估计的合成信号。 基站随后组合互补的合成信号对以产生组合信号并发送组合信号中的至少一个，以便为至少一个移动终端实现至少一个虚拟天线。
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公开(公告)号：US20070189363A1
公开(公告)日：2007-08-16
申请号：US11276069
申请日：2006-02-13
申请人： Hakan Bengt Eriksson , Carmela Cozzo , Ali S. Khayrallah , Gregory E. Bottomley , Yi-Pin Eric Wang
发明人： Hakan Bengt Eriksson , Carmela Cozzo , Ali S. Khayrallah , Gregory E. Bottomley , Yi-Pin Eric Wang
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B1/71052 , H04B1/711 , H04B2201/709727
摘要： The computational complexity required for interference suppression in the reception of wireless communications from multiple users is reduced by sharing information among the users. In some situations, information indicative of a statistical characteristic of the interference is shared among the users. Delays used to produce the interference statistic information are determined based on rake finger delays employed by the users. In some situations, a parameter estimate that is used to calculate combining weights for the users is shared among the users.
摘要翻译： 通过在用户之间共享信息来减少在多个用户的无线通信的接收中的干扰抑制所需的计算复杂度。 在某些情况下，用户之间共享指示干扰的统计特性的信息。 用于产生干扰统计信息的延迟是基于用户使用的耙指延迟来确定的。 在某些情况下，用户之间共享用于计算用户组合权重的参数估计。
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公开(公告)号：US09363002B2
公开(公告)日：2016-06-07
申请号：US13414932
申请日：2012-03-08
CPC分类号： H04B7/0626 , H04B7/022 , H04B7/0434 , H04B7/0452 , H04B7/0663 , H04B17/373 , H04L1/0019 , H04L25/03898 , H04L25/03949
摘要： A system and method in which a base station treats the Channel State Information (CSI) from wireless terminals as only partially-stale, and exploits this partially-stale CSI to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder. The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments thus combine the benefits of the stale feedback scheme with precoding to match the channel. Consequently, the signal received at a terminal is better conditioned, thereby providing a greater overall boost in performance of the communication arrangement between the base station and the terminal. The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals.
摘要翻译： 一种基站将无线终端的信道状态信息（CSI）仅处于部分状态的系统和方法，并利用该部分陈旧的CSI来预测来自信道的旧估计的当前信道。 然后预测的通道用于设计预编码器。 基站用预编码器对发射信号进行整形，使其尽可能接近当前信道。 因此，特定的实施例将陈旧反馈方案的优点与预编码相结合以匹配信道。 因此，在终端处接收的信号被更好地调节，从而对基站和终端之间的通信装置的性能提供更大的整体提升。 部分陈旧的CSI的使用对于具有大量简单终端的密集网络来说可能是重要的。
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