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公开(公告)号：US20090207853A1
公开(公告)日：2009-08-20
申请号：US12369633
申请日：2009-02-11
IPC分类号： H04L29/06
CPC分类号： H04L27/2647 , H04J11/0069 , H04L27/2607
摘要： A technique is provided for determining the configuration of a sub-frame having data symbols including cyclic-prefixes. In some communication standards such as the Long Term Evolution (LTE) standard, a plurality of possible configurations exist for a sub-frame, with each configuration being identifiable by a certain cyclic-prefix length. In an exemplary method realization, the technique includes receiving a data signal comprising the sub-frame, evaluating one or more hypotheses of the cyclic prefix length to produce one or more corresponding evaluation results, and, based on the evaluation results, deciding on a most-likely cyclic prefix length, according to which the sub-frame configuration is determined. The hypothesis evaluation may involve autocorrelation and cyclic accumulation of samples of the received data signal.
摘要翻译： 提供了一种用于确定具有包括循环前缀的数据符号的子帧的配置的技术。 在诸如长期演进（LTE）标准的某些通信标准中，对于子帧存在多个可能的配置，每个配置可以通过一定的循环前缀长度来识别。 在示例性方法实现中，该技术包括接收包括子帧的数据信号，评估循环前缀长度的一个或多个假设以产生一个或多个相应的评估结果，并且基于评估结果，决定最多 类似循环前缀长度，根据该长度确定子帧配置。 假设评估可以涉及接收数据信号的样本的自相关和循环累加。
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公开(公告)号：US07826342B2
公开(公告)日：2010-11-02
申请号：US10541790
申请日：2003-01-15
IPC分类号： H04J11/00
CPC分类号： H04L27/2647 , H04L1/0003 , H04L1/0009 , H04L25/0204 , H04L25/022
摘要： The present invention concerns a method for estimating the time-dispersion of a channel comprising D subchannels, wherein one computes from a received signal a set of estimated Channel Transfer Factors (CTF's) Ĥ[ν], where ν(0≦ν≦D) is the subchannel number, said method comprising a step of calculating, for a predetermined strictly positive integer d, a correlation factor Cd representing the correlations, both in amplitude and in phase, between pairs Ĥ[ν] and Ĥ[ν+d] of said computed CTF estimates. By an appropriate choice of d, the time-dispersion resolution can be adapted to most prevalent channels. The correlation is optionally corrected according to the mean channel estimation signal-to-noise ratio. This method can be used for many applications where knowing the time-dispersion characteristics of a channel is required, and is, for example, particularly suitable for designing a channel estimation filter, and for link adaptation. Application to devices and apparatus implementing these methods.
摘要翻译： 本发明涉及一种用于估计包括D个子信道的信道的时间分散的方法，其中一个从接收信号计算一组估计的信道传送因子（CTF's）Ĥ[＆ngr]，其中＆ngr;（0＆nlE;＆ngr; ＆lt; nlE; D）是子信道号，所述方法包括以下步骤：对于预定的严格正整数d，表示对之间的相关性的相关因子Cd（在幅度和相位上），Λ[＆ngr]和Ĥ[ ＆ngr; + d]。 通过d的适当选择，时间 - 分散度分辨率可以适应于最流行的频道。 可以根据平均信道估计信噪比来校正相关性。 该方法可以用于需要知道信道的时间 - 色散特性的许多应用，并且例如特别适用于设计信道估计滤波器和用于链路自适应。 应用于实现这些方法的设备和设备。
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公开(公告)号：US08259875B2
公开(公告)日：2012-09-04
申请号：US12837652
申请日：2010-07-16
IPC分类号： H04L27/06
CPC分类号： H04L27/2659 , H04L27/2675
摘要： A technique for determining a frequency offset between components of a communication network based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is described. A method implementation of this technique comprises a provision of a set of correlation signals at different frequencies, with each correlation signal being indicative of a specific frequency offset hypothesis and comprising the CAZAC sequence. Once a synchronization signal comprising the CAZAC sequence is received, this synchronization signal is correlated with each of the correlation signals to obtain a correlation result for each frequency offset hypothesis. In a next step, at least one of the frequency offset hypotheses is selected based on a comparison of the correlation results. The frequency offset may then be determined based on the at least one selected frequency offset hypothesis.
摘要翻译： 描述了基于恒幅零自相关（CAZAC）序列来确定通信网络的组件之间的频率偏移的技术。 该技术的方法实现包括提供不同频率的一组相关信号，每个相关信号表示特定的频率偏移假设并且包括CAZAC序列。 一旦接收到包括CAZAC序列的同步信号，则该同步信号与每个相关信号相关，以获得每个频率偏移假设的相关结果。 在下一步骤中，基于相关结果的比较来选择频偏假设中的至少一个。 然后可以基于至少一个选择的频率偏移假设来确定频率偏移。
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公开(公告)号：US20060227904A1
公开(公告)日：2006-10-12
申请号：US10541790
申请日：2003-01-15
IPC分类号： H04L27/06
CPC分类号： H04L27/2647 , H04L1/0003 , H04L1/0009 , H04L25/0204 , H04L25/022
摘要： The present invention concerns a method for estimating the time-dispersion of a channel comprising D subchannels, wherein one computes from a received signal a set of estimated Channel Transfer Factors (CTF's) Ĥ[ν], where ν(0≦ν≦D) is the subchannel number, said method comprising a step of calculating, for a predetermined strictly positive integer d, a correlation factor Cd representing the correlations, both in amplitude and in phase, between pairs Ĥ[ν] and Ĥ[ν+d] of said computed CTF estimates. By an appropriate choice of d, the time-dispersion resolution can be adapted to most prevalent channels. The correlation is optionally corrected according to the mean channel estimation signal-to-noise ratio. This method can be used for many applications where knowing the time-dispersion characteristics of a channel is required, and is, for example, particularly suitable for designing a channel estimation filter, and for link adaptation. Application to devices and apparatus implementing these methods.
摘要翻译： 本发明涉及一种用于估计包括D个子信道的信道的时间分散的方法，其中一个从接收信号计算一组估计的信道传送因子（CTF）H [nu]，其中nu（0≤nu< D）是子信道号，所述方法包括以下步骤：对于预定的严格正整数d，表示在对H 1之间的幅度和相位上的相关性的相关因子C < nu]和所述计算CTF估计的H [nu + d]。 通过d的适当选择，时间 - 分散度分辨率可以适应于最流行的频道。 可以根据平均信道估计信噪比来校正相关性。 该方法可以用于需要知道信道的时间 - 色散特性的许多应用，并且例如特别适用于设计信道估计滤波器和用于链路自适应。 应用于实现这些方法的设备和设备。
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公开(公告)号：US08693460B2
公开(公告)日：2014-04-08
申请号：US13061908
申请日：2008-09-05
IPC分类号： H04J3/06
CPC分类号： H04B7/2684 , H04W56/0045
摘要： The invention relates to a technique for controlling a synchronization of a terminal device (10) with a wireless network, e.g. an LTE network, wherein data are transmitted as a continuous data signal on a radio interface (11, 12) while being processed block-wise in the terminal (10). A method embodiment of the technique for achieving at least a downlink (11) synchronization comprises establishing a time-address mapping (TAM, 36) indicative of an association of a reference time value of an internal clock (32) with a reference address in the reception data buffer (16); determining an address of data samples representing the received data block in the reception data buffer (16) based on the time-address mapping; and initiating a block-wise reading of the data block from the reception data buffer (16) based on the determined address.
摘要翻译： 本发明涉及一种用于控制终端设备（10）与无线网络的同步的技术，例如， LTE网络，其中数据在无线接口（11,12）上作为连续数据信号发送，同时在终端（10）中以块方式进行处理。 用于实现至少下行链路（11）同步的技术的方法实施例包括建立指示内部时钟（32）的参考时间值与参考地址的关联的时间地址映射（TAM，36） 接收数据缓冲器（16）; 基于时间地址映射确定在接收数据缓冲器（16）中表示接收数据块的数据样本的地址; 以及基于所确定的地址，从所述接收数据缓冲器（16）发起对所述数据块的块状读取。
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公开(公告)号：US08751890B2
公开(公告)日：2014-06-10
申请号：US13140668
申请日：2008-12-18
CPC分类号： H04L1/1835 , H04L1/1812 , H04L1/1822
摘要： A communication device (100) for communicating in accordance with a hybrid automatic repeat request protocol, the communication device (100) comprising a receiving unit (102) adapted for receiving a communication message including soft-bit values, the soft-bit values representing reliability information for received verification data verifying proper transmission of the communication message, a storage unit (104) adapted for storing the soft-bit values, and a storage management unit (106) adapted for dynamically managing storage of the soft-bit values in the storage unit (104) so that soft-bit values failing to fulfill at least one relevance criteria are not maintained in the storage unit (104).
摘要翻译： 一种用于根据混合自动重复请求协议通信的通信设备（100），所述通信设备（100）包括适于接收包括软比特值的通信消息的接收单元（102），所述软比特值表示可靠性 用于验证通信消息的正确传输的接收验证数据的信息;适于存储软比特值的存储单元（104）;以及存储管理单元（106），适于动态地管理存储在所述存储器中的软比特值的存储 单元（104），使得不能满足至少一个相关性准则的软比特值不保持在存储单元（104）中。
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公开(公告)号：US20110276852A1
公开(公告)日：2011-11-10
申请号：US13140668
申请日：2008-12-18
CPC分类号： H04L1/1835 , H04L1/1812 , H04L1/1822
摘要： A communication device (100) for communicating in accordance with a hybrid automatic repeat request protocol, the communication device (100) comprising a receiving unit (102) adapted for receiving a communication message including soft-bit values, the soft-bit values representing reliability information for received verification data verifying proper transmission of the communication message, a storage unit (104) adapted for storing the soft-bit values, and a storage management unit (106) adapted for dynamically managing storage of the soft-bit values in the storage unit (104) so that soft-bit values failing to fulfil at least one relevance criteria are not maintained in the storage unit (104).
摘要翻译： 一种用于根据混合自动重复请求协议通信的通信设备（100），所述通信设备（100）包括适于接收包括软比特值的通信消息的接收单元（102），所述软比特值表示可靠性 用于验证通信消息的正确传输的接收验证数据的信息;适于存储软比特值的存储单元（104）;以及存储管理单元（106），适于动态地管理存储在所述存储器中的软比特值的存储 单元（104），使得不能满足至少一个相关性准则的软比特值不保持在存储单元（104）中。
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公开(公告)号：US20110134980A1
公开(公告)日：2011-06-09
申请号：US12991076
申请日：2009-05-08
CPC分类号： H03G3/3078
摘要： A technique for controlling a gain of a receiver is provided. A method implementation of this technique comprises the steps of receiving at least one signal, initially controlling the gain of the receiver based on a correlation value of a first part of the received signal having a substantially constant signal strength, determining at least one timing-related parameter of the received signal based on the at least first part, identifying based on the at least one timing-related parameter at least a second part of the received signal having a substantially constant signal strength and further controlling the gain of the receiver based on a measured signal strength of the identified second part.
摘要翻译： 提供了一种用于控制接收机增益的技术。 该技术的方法实现包括以下步骤：基于接收信号的第一部分的相关值，初始地控制接收机的增益，接收至少一个信号，该相关值具有基本恒定的信号强度，确定至少一个定时相关 基于所述至少第一部分的所述接收信号的参数，基于所述至少一个定时相关参数识别所述接收信号的至少第二部分具有基本上恒定的信号强度，并且基于所述接收机的增益进一步控制所述接收机的增益 测定的第二部分的信号强度。
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公开(公告)号：US20110176535A1
公开(公告)日：2011-07-21
申请号：US13061908
申请日：2008-09-05
IPC分类号： H04J3/06
CPC分类号： H04B7/2684 , H04W56/0045
摘要： The invention relates to a technique for controlling a synchronization of a terminal device (10) with a wireless network, e.g. an LTE network, wherein data are transmitted as a continuous data signal on a radio interface (11, 12) while being processed block-wise in the terminal (10). A method embodiment of the technique for achieving at least a downlink (11) synchronization comprises establishing a time-address mapping (TAM, 36) indicative of an association of a reference time value of an internal clock (32) with a reference address in the reception data buffer (16); determining an address of data samples representing the received data block in the reception data buffer (16) based on the time-address mapping; and initiating a block-wise reading of the data block from the reception data buffer (16) based on the determined address.
摘要翻译： 本发明涉及一种用于控制终端设备（10）与无线网络的同步的技术，例如， LTE网络，其中数据在无线接口（11,12）上作为连续数据信号发送，同时在终端（10）中以块方式进行处理。 用于实现至少下行链路（11）同步的技术的方法实施例包括建立指示内部时钟（32）的参考时间值与参考地址的关联的时间地址映射（TAM，36） 接收数据缓冲器（16）; 基于时间地址映射确定在接收数据缓冲器（16）中表示接收数据块的数据样本的地址; 以及基于所确定的地址，从所述接收数据缓冲器（16）发起对所述数据块的块状读取。
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公开(公告)号：US20110026649A1
公开(公告)日：2011-02-03
申请号：US12837652
申请日：2010-07-16
IPC分类号： H04L27/00
CPC分类号： H04L27/2659 , H04L27/2675
摘要： A technique for determining a frequency offset between components of a communication network based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is described. A method implementation of this technique comprises a provision of a set of correlation signals at different frequencies, with each correlation signal being indicative of a specific frequency offset hypothesis and comprising the CAZAC sequence. Once a synchronization signal comprising the CAZAC sequence is received, this synchronization signal is correlated with each of the correlation signals to obtain a correlation result for each frequency offset hypothesis. In a next step, at least one of the frequency offset hypotheses is selected based on a comparison of the correlation results. The frequency offset may then be determined based on the at least one selected frequency offset hypothesis.
摘要翻译： 描述了基于恒幅零自相关（CAZAC）序列来确定通信网络的组件之间的频率偏移的技术。 该技术的方法实现包括提供不同频率的一组相关信号，每个相关信号指示特定的频率偏移假设并且包括CAZAC序列。 一旦接收到包括CAZAC序列的同步信号，则该同步信号与每个相关信号相关，以获得每个频率偏移假设的相关结果。 在下一步骤中，基于相关结果的比较来选择频偏假设中的至少一个。 然后可以基于至少一个选择的频率偏移假设来确定频率偏移。
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