-
1.发明授权Managing reserved cells and user equipments in an MBSFN environment within a wireless communication system 有权管理无线通信系统中的MBSFN环境中的保留小区和用户设备公开(公告)号：US09226248B2
公开(公告)日：2015-12-29
申请号：US13461602
申请日：2012-05-01
申请人： Xiaoxia Zhang , Jun Wang , Mariam Motamed
发明人： Xiaoxia Zhang , Jun Wang , Mariam Motamed
CPC分类号： H04W52/52 , H04W52/143 , H04W52/244
摘要： In a first configuration, an apparatus determines subframes, in a radio frame, used by one or more neighboring BSs for providing services, and sends information to a UE indicating the determined subframes. In a second configuration, an apparatus determines subframes, in a radio frame, used by one or more neighboring BSs for providing services, transmits with a first power in remaining subframes other than the determined subframes in the radio frame, determines a second power based on the first power such that a difference between the second power and the first power is less than a threshold, and transmits with the second power in a subset of symbols in the determined subframes. In a third configuration, an apparatus receives information from a BS indicating subframes, in a radio frame, used by one or more neighboring BSs for providing services, and adjusts an AGC gain based on the indicated subframes.
摘要翻译： 在第一配置中，设备确定由无线帧中的一个或多个相邻BS用于提供服务的子帧，并向UE指示所确定的子帧的信息。 在第二配置中，设备确定由无线帧中的一个或多个相邻BS用于提供服务的子帧，在无线电帧中确定的子帧以外的剩余子帧中以第一功率进行发送，基于 所述第一功率使得所述第二功率和所述第一功率之间的差小于阈值，并且以所确定的子帧中的符号子集中的所述第二功率进行发送。 在第三种配置中，装置从BS指示指示在一个或多个相邻BS中用于提供业务的无线帧中的子帧的信息，并且基于所指示的子帧来调整AGC增益。
-
2.发明申请MANAGING RESERVED CELLS AND USER EQUIPMENTS IN AN MBSFN ENVIRONMENT WITHIN A WIRELESS COMMUNICATION SYSTEM 有权在无线通信系统中的MBSFN环境中管理保留的信元和用户设备公开(公告)号：US20120281611A1
公开(公告)日：2012-11-08
申请号：US13461602
申请日：2012-05-01
申请人： Xiaoxia Zhang , Jun Wang , Mariam Motamed
发明人： Xiaoxia Zhang , Jun Wang , Mariam Motamed
CPC分类号： H04W52/52 , H04W52/143 , H04W52/244
摘要： In a first configuration, an apparatus determines subframes, in a radio frame, used by one or more neighboring BSs for providing services, and sends information to a UE indicating the determined subframes. In a second configuration, an apparatus determines subframes, in a radio frame, used by one or more neighboring BSs for providing services, transmits with a first power in remaining subframes other than the determined subframes in the radio frame, determines a second power based on the first power such that a difference between the second power and the first power is less than a threshold, and transmits with the second power in a subset of symbols in the determined subframes. In a third configuration, an apparatus receives information from a BS indicating subframes, in a radio frame, used by one or more neighboring BSs for providing services, and adjusts an AGC gain based on the indicated subframes.
摘要翻译： 在第一配置中，设备确定由无线帧中的一个或多个相邻BS用于提供服务的子帧，并向UE指示所确定的子帧的信息。 在第二配置中，设备确定由无线帧中的一个或多个相邻BS用于提供服务的子帧，在无线电帧中确定的子帧以外的剩余子帧中以第一功率进行发送，基于 所述第一功率使得所述第二功率和所述第一功率之间的差小于阈值，并且以所确定的子帧中的符号子集中的所述第二功率进行发送。 在第三种配置中，装置从BS指示指示在一个或多个相邻BS中用于提供业务的无线帧中的子帧的信息，并且基于所指示的子帧来调整AGC增益。
-
公开(公告)号：US07929652B2
公开(公告)日：2011-04-19
申请号：US11733646
申请日：2007-04-10
CPC分类号： H04L25/0228
摘要： Techniques for performing adaptive channel estimation are described. A receiver derives channel estimates for a wireless channel based on received pilot symbols and at least one estimation parameter. The receiver updates the at least one estimation parameter based on the received pilot symbols. The at least one estimation parameter may be for an innovations representation model of the wireless channel and may be updated based on a cost function with costs defined by prediction errors. In one design, the receiver derives predicted pilot symbols based on the received pilot symbols and the at least one estimation parameter, determines prediction errors based on the received pilot symbols and the predicted pilot symbols, and further derives error gradients based on the prediction errors. The receiver then updates the at least one estimation parameter based on the error gradients and the prediction errors, e.g., if a stability test is satisfied.
摘要翻译： 描述用于执行自适应信道估计的技术。 接收机基于接收的导频符号和至少一个估计参数导出无线信道的信道估计。 接收机基于接收的导频符号来更新至少一个估计参数。 所述至少一个估计参数可以是针对无线信道的创新表示模型，并且可以基于具有由预测误差定义的成本的成本函数来更新。 在一种设计中，接收器基于接收到的导频符号和至少一个估计参数导出预测的导频符号，基于接收到的导频符号和预测的导频符号来确定预测误差，并且还基于预测误差导出误差梯度。 然后，接收器基于误差梯度和预测误差来更新至少一个估计参数，例如，如果满足稳定性测试。
-
公开(公告)号：US06324387B1
公开(公告)日：2001-11-27
申请号：US09222400
申请日：1998-12-29
IPC分类号： H04B106
CPC分类号： H03G3/3052
摘要： A controlled receive device is disclosed having an amplifier circuit, which receives an input signal, and a control circuit which receives the input signal and outputs a controlled signal to a receiver. The receiver outputs an output signal. A controller varies the gain of the amplifier circuit in response to levels of the controlled signal and the output signal. The control circuit outputs a controlled indicator signal indicative of a level of the controlled signal and the receiver outputs an output indicator signal indicative of the output signal level. The controlled indicator signal and the output indicator signal are compared using comparators, to respective reference or threshold levels for producing control signals used by the controller for varying the amplifier gain.
摘要翻译： 公开了一种受控接收装置，其具有接收输入信号的放大器电路和接收输入信号并将受控信号输出到接收器的控制电路。 接收器输出一个输出信号。 控制器响应于受控信号和输出信号的电平而改变放大器电路的增益。 控制电路输出指示受控信号电平的受控指示信号，接收器输出表示输出信号电平的输出指示信号。 使用比较器将受控指示信号和输出指示信号进行比较，以相应的参考或阈值电平，以产生控制器用于改变放大器增益的控制信号。
-
公开(公告)号：US20100296502A1
公开(公告)日：2010-11-25
申请号：US12468995
申请日：2009-05-20
CPC分类号： H03D3/009
摘要： Techniques for compensating for I-Q mismatch in a communications receiver. In an exemplary embodiment, incoming I and Q samples are adjusted by multiplying with certain compensation coefficients to generate mismatch-compensated I and Q samples. The compensation coefficients may themselves be calculated and iteratively refined from the mismatch-compensated I and Q samples. Further techniques for partitioning the adjustment and estimation functions among computational hardware are disclosed. In an exemplary embodiment, estimation may be restricted to only those segments of the incoming I and Q samples that fulfill certain conditions, e.g., segments of the incoming I and Q samples known to be statistically uncorrelated and/or to have equal average energy.
摘要翻译： 用于补偿通信接收机中的I-Q不匹配的技术。 在示例性实施例中，通过与某些补偿系数相乘来调整输入I和Q样本，以产生失配补偿的I和Q样本。 补偿系数本身可以从不匹配补偿的I和Q样本中计算和迭代地改进。 公开了用于在计算硬件之间划分调整和估计功能的其它技术。 在示例性实施例中，估计可以仅限于满足某些条件的输入I和Q样本的那些段，例如已知统计学上不相关和/或具有相等平均能量的输入I和Q样本的段。
-
公开(公告)号：US20080253487A1
公开(公告)日：2008-10-16
申请号：US11733646
申请日：2007-04-10
IPC分类号： H04L1/20
CPC分类号： H04L25/0228
摘要： Techniques for performing adaptive channel estimation are described. A receiver derives channel estimates for a wireless channel based on received pilot symbols and at least one estimation parameter. The receiver updates the at least one estimation parameter based on the received pilot symbols. The at least one estimation parameter may be for an innovations representation model of the wireless channel and may be updated based on a cost function with costs defined by prediction errors. In one design, the receiver derives predicted pilot symbols based on the received pilot symbols and the at least one estimation parameter, determines prediction errors based on the received pilot symbols and the predicted pilot symbols, and further derives error gradients based on the prediction errors. The receiver then updates the at least one estimation parameter based on the error gradients and the prediction errors, e.g., if a stability test is satisfied.
摘要翻译： 描述用于执行自适应信道估计的技术。 接收机基于接收的导频符号和至少一个估计参数导出无线信道的信道估计。 接收机基于接收的导频符号来更新至少一个估计参数。 所述至少一个估计参数可以是针对无线信道的创新表示模型，并且可以基于具有由预测误差定义的成本的成本函数来更新。 在一种设计中，接收器基于接收到的导频符号和至少一个估计参数导出预测的导频符号，基于接收到的导频符号和预测的导频符号来确定预测误差，并且还基于预测误差导出误差梯度。 然后，接收器基于误差梯度和预测误差来更新至少一个估计参数，例如，如果满足稳定性测试。
-
7.发明授权Apparatus and method for locking onto a psuedo-noise code in an IS-95 spread spectrum communications system 失效用于锁定IS-95扩频通信系统中的伪噪声码的装置和方法公开(公告)号：US06549559B2
公开(公告)日：2003-04-15
申请号：US08996669
申请日：1997-12-23
IPC分类号： H04B169
CPC分类号： H04B1/7085 , H04B1/709
摘要： In response to an error signal, a pseudo-noise generator (312 or 416) generates an on-time pseudo-noise signal, an early pseudo-noise signal delayed by less than one-half of a chip interval, and a late pseudo-noise signal advanced by less than one-half of a chip interval. A correlator (302 and 304, or 404) correlates a received signal with the early and late pseudo-noise signals to generate the error signal. The combination of the pseudo-noise generator (312 or 416) and the correlator (302 and 304, or 404) creates a loop in which the on-time pseudo-noise signal tracks a received pseudo-noise code more closely than in prior art devices and enables a deinterleave and decode device (210) within the receiver to demodulate the received signal more effectively.
摘要翻译： 响应于误差信号，伪噪声发生器（312或416）产生导通时间伪噪声信号，延迟小于码片间隔的一半的早期伪噪声信号， 噪声信号提前不到芯片间隔的一半。 相关器（302和304或404）将接收信号与早期和晚期伪噪声信号相关以产生误差信号。 伪噪声发生器（312或416）和相关器（302和304或404）的组合产生一个循环，其中导通时间伪噪声信号比现有技术更接近地跟踪接收的伪噪声码 并且使得接收机内的解交织和解码设备（210）能够更有效地解调所接收的信号。
-
公开(公告)号：US08718210B2
公开(公告)日：2014-05-06
申请号：US13237868
申请日：2011-09-20
CPC分类号： H04L5/0051 , H04L25/0212 , H04L25/0224
摘要： Estimating a channel impulse response (CIR) for a wireless transmission, for example a multimedia broadcast multicast services single frequency network (MBSFN) transmission, may be performed by a receiver of an wireless subframe, without requiring operational memory in excess of what is needed for CIR estimation of unicast signaling, while providing enhanced delay spread coverage. The wireless subframe may be a MBSFN subframe. The receiver may form an aggregate vector of pilot tones extracted from an OFDM reference symbol of an wireless subframe. The receiver may subsample the aggregate vector to obtain a plurality of sub-vectors each comprising a distinct subsampling phase. The receiver may process the plurality of sub-vectors using an inverse fast Fourier transform to obtain time domain representations of each of the sub-vectors. The receiver may combine the time domain representations in various ways to obtain a CIR estimate for the wireless subframe.
摘要翻译： 估计用于无线传输的信道脉冲响应（CIR），例如多媒体广播多播服务单频网（MBSFN）传输，可以由无线子帧的接收机执行，而不需要超过所需的操作存储器 CIR估计单播信令，同时提供增强的延迟扩展覆盖。 无线子帧可以是MBSFN子帧。 接收机可以形成从无线子帧的OFDM参考符号提取的导频音的聚合向量。 接收机可以对聚合向量进行子采样以获得每个包括不同子采样相位的多个子向量。 接收机可以使用快速傅里叶逆变换处理多个子向量，以获得每个子向量的时域表示。 接收机可以以各种方式组合时域表示以获得无线子帧的CIR估计。
-
公开(公告)号：US20130070869A1
公开(公告)日：2013-03-21
申请号：US13237868
申请日：2011-09-20
CPC分类号： H04L5/0051 , H04L25/0212 , H04L25/0224
摘要： Estimating a channel impulse response (CIR) for a wireless transmission, for example a multimedia broadcast multicast services single frequency network (MBSFN) transmission, may be performed by a receiver of an wireless subframe, without requiring operational memory in excess of what is needed for CIR estimation of unicast signaling, while providing enhanced delay spread coverage. The wireless subframe may be a MBSFN subframe. The receiver may form an aggregate vector of pilot tones extracted from an OFDM reference symbol of an wireless subframe. The receiver may subsample the aggregate vector to obtain a plurality of sub-vectors each comprising a distinct subsampling phase. The receiver may process the plurality of sub-vectors using an inverse fast Fourier transform to obtain time domain representations of each of the sub-vectors. The receiver may combine the time domain representations in various ways to obtain a CIR estimate for the wireless subframe.
摘要翻译： 估计用于无线传输的信道脉冲响应（CIR），例如多媒体广播多播服务单频网（MBSFN）传输，可以由无线子帧的接收机执行，而不需要超过所需的操作存储器 CIR估计单播信令，同时提供增强的延迟扩展覆盖。 无线子帧可以是MBSFN子帧。 接收机可以形成从无线子帧的OFDM参考符号提取的导频音的聚合向量。 接收机可以对聚合向量进行子采样以获得每个包括不同子采样相位的多个子向量。 接收机可以使用快速傅里叶逆变换处理多个子向量，以获得每个子向量的时域表示。 接收机可以以各种方式组合时域表示以获得无线子帧的CIR估计。
-
公开(公告)号：US08260229B2
公开(公告)日：2012-09-04
申请号：US12468995
申请日：2009-05-20
IPC分类号： H04B17/02
CPC分类号： H03D3/009
摘要： Techniques for compensating for I-Q mismatch in a communications receiver. In an exemplary embodiment, incoming I and Q samples are adjusted by multiplying with certain compensation coefficients to generate mismatch-compensated I and Q samples. The compensation coefficients may themselves be calculated and iteratively refined from the mismatch-compensated I and Q samples. Further techniques for partitioning the adjustment and estimation functions among computational hardware are disclosed. In an exemplary embodiment, estimation may be restricted to only those segments of the incoming I and Q samples that fulfill certain conditions, e.g., segments of the incoming I and Q samples known to be statistically uncorrelated and/or to have equal average energy.
摘要翻译： 用于补偿通信接收机中的I-Q不匹配的技术。 在示例性实施例中，通过与某些补偿系数相乘来调整输入I和Q样本，以产生失配补偿的I和Q样本。 补偿系数本身可以从不匹配补偿的I和Q样本中计算和迭代地改进。 公开了用于在计算硬件之间划分调整和估计功能的其它技术。 在示例性实施例中，估计可以仅限于满足某些条件的输入I和Q样本的那些段，例如已知在统计学上不相关和/或具有相等平均能量的输入I和Q样本的段。
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.013 秒)
