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公开(公告)号：US20070036243A1
公开(公告)日：2007-02-15
申请号：US10573830
申请日：2003-09-30
IPC分类号： H04L27/06
CPC分类号： H04L25/0204 , H04L25/0206 , H04L25/0232 , H04L25/0236
摘要： A system for estimating the transfer function of a transmission channel such as the downlink channel in a CDMA system over which a pilot signal and a data signal are transmitted. The system includes at least one estimator for producing first and second channel estimates from the pilot signal and the data signals and a combination node for combining the first and second channel estimates to obtain final combined channel estimates. The system includes an interpolator module adapted for interpolating the second channel estimates over a basic estimation reference time to produce equal numbers of channel estimates over the basic estimation reference time derived from the data signal and the pilot signal respectively, and possibly rate adaptation modules adapted for mapping the channel estimates on the basic estimation reference time. The combination node is a summation node producing the final combined channel estimates as a sum of the first channel estimates and the interpolated second channel estimates.
摘要翻译： 一种用于估计传输信道的传递函数的系统，例如在其中发送导频信号和数据信号的CDMA系统中的下行链路信道。 该系统包括用于从导频信号和数据信号产生第一和第二信道估计的至少一个估计器，以及用于组合第一和第二信道估计以获得最终组合信道估计的组合节点。 该系统包括内插器模块，其适于在基本估计基准时间内插第二信道估计，以分别在从数据信号和导频信号导出的基本估计参考时间上产生相等数目的信道估计，并且可能的速率适应模块 在基本估计参考时间上映射信道估计。 组合节点是产生最终组合信道估计值作为第一信道估计和内插第二信道估计之和的求和节点。
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公开(公告)号：US07606334B2
公开(公告)日：2009-10-20
申请号：US10573830
申请日：2003-09-30
CPC分类号： H04L25/0204 , H04L25/0206 , H04L25/0232 , H04L25/0236
摘要： A system for estimating the transfer function of a transmission channel such as the downlink channel in a CDMA system over which a pilot signal and a data signal are transmitted. The system includes at least one estimator for producing first and second channel estimates from the pilot signal and the data signals and a combination node for combining the first and second channel estimates to obtain final combined channel estimates. The system includes an interpolator module adapted for interpolating the second channel estimates over a basic estimation reference time to produce equal numbers of channel estimates over the basic estimation reference time derived from the data signal and the pilot signal respectively, and possibly rate adaptation modules adapted for mapping the channel estimates on the basic estimation reference time. The combination node is a summation node producing the final combined channel estimates as a sum of the first channel estimates and the interpolated second channel estimates.
摘要翻译： 一种用于估计传输信道的传递函数的系统，例如在其中发送导频信号和数据信号的CDMA系统中的下行链路信道。 该系统包括用于从导频信号和数据信号产生第一和第二信道估计的至少一个估计器，以及用于组合第一和第二信道估计以获得最终组合信道估计的组合节点。 该系统包括内插器模块，其适于在基本估计基准时间内插第二信道估计，以分别在从数据信号和导频信号导出的基本估计参考时间上产生相等数目的信道估计，并且可能的速率适应模块 在基本估计参考时间上映射信道估计。 组合节点是产生最终组合信道估计值作为第一信道估计和内插第二信道估计之和的求和节点。
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3.发明授权Memory-based device and method of channel estimation in a digital communication receiver 有权基于存储器的设备和数字通信接收机中的信道估计方法公开(公告)号：US07577184B2
公开(公告)日：2009-08-18
申请号：US10534996
申请日：2002-11-15
申请人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alessandro Ossoli , Alfredo Ruscitto
发明人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alessandro Ossoli , Alfredo Ruscitto
IPC分类号： H04B1/00
CPC分类号： H04B1/7093 , H04B1/7113 , H04B1/7117 , H04B2201/70707
摘要： A spread spectrum digital communication receiver, of the type comprising an input memory buffer (16) for storing samples of an input signal (y(k)) and a code generator circuit (30) for generating a re-generated user code, incorporates a device (24) for the estimation of a channel delay profile comprises: a basic correlator (32) having a first input (41) for sequentially reading from a memory location of the input memory buffer (16) a plurality of samples of the input signal (y(k)), a second input (43) for receiving from the code generator circuit (30) a re-generated user code, and an output terminal for generating, by means of a correlation operation between the plurality of samples of the input signal and the regenerated user code, a first value of the channel delay profile energy (DP(1)); and a memory controller circuit (36) for addressing said the memory buffer (16) so that the first input (41) of the basic correlator (32) is successively fed with the content of several memory locations of the memory buffer (16), each addressing operation corresponding to a new correlation operation of the basic correlator (32) for the computation of a new value of the channel delay profile energy (DP(1)).
摘要翻译： 包括用于存储输入信号（y（k））的采样的输入存储器缓冲器（16）和用于生成重新生成的用户代码的代码生成器电路（30）的类型的扩展频谱数字通信接收机包括一个 用于估计信道延迟分布的装置（24）包括：基本相关器（32），具有用于从输入存储器缓冲器（16）的存储器位置顺序读取输入信号的多个样本的第一输入端（41） （y（k）），用于从码发生器电路（30）接收重新生成的用户码的第二输入端（43），以及输出端子，用于通过所述多个采样 输入信号和再生用户代码，信道延迟分布能量（DP（1））的第一值; 以及存储器控制器电路（36），用于寻址所述存储器缓冲器（16），使得所述基本相关器（32）的第一输入端（41）被连续地馈送到所述存储器缓冲器（16）的若干存储器位置的内容， 每个寻址操作对应于用于计算信道延迟分布能量（DP（1））的新值的基本相关器（32）的新的相关操作。
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4.发明授权Method and device for fine synchronization of a digital telecommunication receiver 有权用于数字电信接收机的精细同步的方法和装置公开(公告)号：US07471754B2
公开(公告)日：2008-12-30
申请号：US10534993
申请日：2002-11-15
IPC分类号： H04L7/00
CPC分类号： H04B1/7085 , H04B1/70757
摘要： A method for the synchronization of a digital telecommunication receiver comprises the steps of:—storing a plurality of consecutive samples E−1, E, M, L, L+1 of an incoming spread spectrum signal in a delay line 56;—determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a first digitally controlled interpolator 26, an interpolated early sample (e) anticipating an optimal sampling time instant;—determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a second digitally controlled interpolator 24, an interpolated middle sample (m) corresponding to the optimal sampling time instant;—determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a third digitally controlled interpolator 28, an interpolated late sample (l) delayed with respect to the optimal sampling time instant;—calculating an error signal ξ as the difference between the energy of the symbols computed from the interpolated early sample (e) and the interpolated late (l) sample;—extracting the sign of the error signal ξ—accumulating the sign of the error signal ξ for the generation of control signals SE, SM, SL for controlling the interpolation phases of the digitally controlled interpolators used for determining the interpolated early (e), middle (m) and late (l) samples. The accumulated value has a positive saturation value of +4 and a negative saturation value of 4.
摘要翻译： 一种用于数字电信接收机的同步的方法包括以下步骤： - 在延迟线56中存储输入的扩频信号的多个连续采样E-1，E，M，L，L + 1; - 由 通过第一数字控制内插器26对输入的扩展频谱信号的连续样本进行内插，预测最佳采样时刻的内插早期采样（e）; - 通过对输入扩频信号的连续采样之间的内插，由 第二数字控制内插器24的装置，对应于最佳采样时刻的内插中间样本（m）; - 借助于第三数字控制内插器28，通过第三数字控制内插器28的连续采样之间的内插确定内插 相对于最佳采样时间瞬时延迟采样（l）; - 将误差信号xi计算为 从内插的早期采样（e）和内插后期采样（1）计算的符号的能量; - 提取误差信号xi的符号，累积误差信号xi的符号以产生控制信号SE，SM， SL用于控制用于确定内插的早期（e），中（m）和晚（l）样本的数字控制内插器的内插相位。 累积值的正饱和值为+4，负饱和值为4。
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5.发明申请Method and device for fine synchronization of a digital telecommunication receiver 有权用于数字电信接收机的精细同步的方法和装置公开(公告)号：US20060133460A1
公开(公告)日：2006-06-22
申请号：US10534993
申请日：2002-11-15
IPC分类号： H04B1/707
CPC分类号： H04B1/7085 , H04B1/70757
摘要： A method for the synchronization of a digital telecommunication receiver comprises the steps of:—storing a plurality of consecutive samples E−1, B, M, 1, L+1 of an incoming spread spectrum signal in a delay line 56;—determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a first digitally controlled interpolator 26, an interpolated early sample (e) anticipating an optimal sampling time instant;—determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a second digitally controlled interpolator 24, an interpolated middle sample (m) corresponding to the optimal sampling time instant;—determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a third digitally controlled interpolator 28, an interpolated late sample (1) delayed with respect to the optimal sampling time instant;—calculating an error signal ξ as the difference between the energy of the symbols computed from the interpolated early sample (e) and the interpolated late (1) sample;—extracting the sign of the error signal ξ accumulating the sign of the error signal ξ for the generation of control signals SE, SM, SL for controlling the interpolation phases of the digitally controlled interpolators used for determining the interpolated early (e), middle (m) and late (I) samples. The accumulated value has a positive saturation value of +4 and a negative saturation value of 4.
摘要翻译： 一种用于数字电信接收机的同步的方法包括以下步骤： - 在延迟线56中存储输入扩频信号的多个连续样本E-1，B，M，1，L + 1; - 由 通过第一数字控制内插器26对输入的扩展频谱信号的连续样本进行内插，预测最佳采样时刻的内插早期采样（e）; - 通过对输入扩频信号的连续采样之间的内插，由 第二数字控制内插器24的装置，对应于最佳采样时刻的内插中间样本（m）; - 借助于第三数字控制内插器28，通过第三数字控制内插器28的连续采样之间的内插确定内插 晚样品（1）相对于最佳采样时刻延迟; - 计算误差信号xi作为差分 从内插的早期采样（e）和内插的较晚采样（1）中计算的符号的能量; - 提取积累误差信号xi的符号的误差信号xi的符号，以产生控制信号S E 用于控制用于确定内插的早期（e），中间（m）和后期的数字控制内插器的内插相位的S / S，S < （I）样品。 累积值的正饱和值为+4，负饱和值为4。
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公开(公告)号：US07515670B2
公开(公告)日：2009-04-07
申请号：US10534992
申请日：2002-11-15
IPC分类号： H04L7/00
CPC分类号： H04B1/7085 , H04B1/709
摘要： A device for maintaining fine alignment between an incoming spread spectrum signal and a locally generated code in a digital communication receiver comprises: a delay line for storing a plurality of consecutive samples (E-1, E, M, L, L+1) of the incoming spread spectrum signal; three digitally controlled interpolators for determining by interpolation between consecutive samples an interpolated early sample, an interpolated middle sample, and an interpolated late sample; two correlators for calculating an error signal as the difference between the energy of the symbols computed from the interpolated early and late samples; a circuit for generating a control signal for controlling the interpolation phase of the digitally controlled interpolator for the early sample, and a digital non-linear filter, for smoothing the control signal of the interpolator for the early sample, enabling the update operation of the control signal only when the absolute value of the error signal at a time instant n is smaller than the absolute value of the same error signal at a time instant n−1.
摘要翻译： 一种用于在数字通信接收机中保持输入扩频信号与本地生成代码之间精确对准的装置，包括：延迟线，用于存储多个连续样本（E-1，E，M，L，L + 1） 传入的扩频信号; 三个数字控制内插器，用于通过内插的插值早期样本，插值中间样本和内插后期样本之间的插值来确定; 两个相关器，用于计算误差信号作为从插值的早期和晚期样本计算的符号的能量之间的差; 用于生成用于控制用于早期采样的数字控制内插器的内插相位的控制信号的电路和用于平滑用于早期采样的内插器的控制信号的数字非线性滤波器，使得能够进行控制的更新操作 只有当时刻n的误差信号的绝对值小于在时刻n-1的相同误差信号的绝对值时才产生信号。
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公开(公告)号：US07450663B2
公开(公告)日：2008-11-11
申请号：US10508928
申请日：2003-03-17
申请人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
发明人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
CPC分类号： H04L25/0232
摘要： A method for the estimation of the transfer function of a transmission channel in a receiving system of UMTS type envisages the computation of a plurality of channel coefficients, included among known channel coefficients corresponding to pilot symbols, through the reiteration of an interpolation algorithm, capable of calculating an intermediate point (Z, f(Z)) between a first extreme and a second extreme of a determined interval, the first extreme being formed by at least two known points and the second extreme being formed by at least one known point, the intermediate point to be calculated having as abscissa (Z) the abscissa value of the mean point between the points defining the interval rounded off to the integer closest to the first extreme, and having as ordinate (F(Z)) the arithmetic average between the ordinate of the known point of the second extreme and the ordinate of a point, chosen between the two known points of the first extreme, having a distance from the intermediate point equal to the distance between the intermediate point and the known point of the second extreme.
摘要翻译： 用于估计UMTS类型的接收系统中的传输信道的传递函数的方法设想通过重复插值算法来计算包括在与导频符号相对应的已知信道系数之中的多个信道系数，能够 计算确定间隔的第一极限和第二极限之间的中间点（Z，f（Z）），所述第一极值由至少两个已知点形成，所述第二极值由至少一个已知点形成， 要计算的中间点具有横坐标（Z），将定义间隔的间隔的平均点的横坐标值舍入到最接近第一极限的整数，并且具有纵坐标（F（Z））之间的算术平均值 在第二极端的已知点的纵坐标和在第一极端的两个已知点之间选择的点的纵坐标具有与中间物的距离 点等于中间点与第二极限的已知点之间的距离。
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公开(公告)号：US20060251154A1
公开(公告)日：2006-11-09
申请号：US10534992
申请日：2002-11-15
CPC分类号： H04B1/7085 , H04B1/709
摘要： A device for maintaining fine alignment between an incoming spread spectrum signal and a locally generated code in a digital communication receiver comprises:—delay line (56) for storing a plurality of consecutive samples (E−1, E, M, L, L+1) of the incoming spread spectrum signal;—three digitally controlled interpolators (24, 26, 28) for determining by interpolation between consecutive samples an interpolated early sample (e), an interpolated middle sample (m) and an interpolated late sample (1);—two correlators (30, 32) for calculating an error signal (ξ) as the difference between the energy of the symbols computed from the interpolated early (e) and late (1) samples;—a circuit for generating a control signal (SOUT?) for controlling the interpolation phase of the digitally controlled interpolator (24) for the early sample (e), and—a digital non-linear filter (68), for smoothing the control signal (SOUT?) of the interpolator (24) for the early sample (e), enabling the update operation of the control signal only when the absolute value (|ξ(n)|) of the error signal at a time instant n is smaller than the absolute value (|ξ(n−1)|) of the same error signal at a time instant n−1.
摘要翻译： 一种用于在数字通信接收机中保持输入扩频信号与本地产生代码之间的精确对准的装置，包括： - 用于存储多个连续样本（E-1，E，M，L，L + 1）; - 三个数字控制内插器（24,26,28），用于通过内插的早期采样（e），内插中间采样（m）和内插后期采样（1）之间的插值来确定连续采样 ）; - 两个相关器（30,32），用于计算误差信号（xi）作为从内插的早期（e）和晚期（1）样本计算的符号的能量之间的差; - 用于产生控制信号的电路 （S
OUT？），用于控制用于耳机的数字控制内插器（24）的内插相位 y样本（e）和数字非线性滤波器（68），用于平滑控制信号（S
OUT？）， 只有当时刻n的误差信号的绝对值（| xi（n）|）小于相同误差信号的绝对值（| xi（n-1）|）时，才更新控制信号的操作 时刻n-1。
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公开(公告)号：US20050153701A1
公开(公告)日：2005-07-14
申请号：US10508928
申请日：2003-03-17
申请人： Donato Ettore , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
发明人： Donato Ettore , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alfredo Ruscitto , Stefano Valle , Lorena Simoni
CPC分类号： H04L25/0232
摘要： A method for the estimation of the transfer function of a transmission channel in a receiving system of UMTS type envisages the computation of a plurality of channel coefficients, included among known channel coefficients corresponding to pilot symbols, through the reiteration of an interpolation algorithm, capable of calculating an intermediate point (Z, f(Z)) between a first extreme and a second extreme of a determined interval, the first extreme being formed by at least two known points and the second extreme being formed by at least one known point, the intermediate point to be calculated having as abscissa (Z) the abscissa value of the mean point between the points defining the interval rounded off to the integer closest to the first extreme, and having as ordinate (F(Z)) the arithmetic average between the ordinate of the known point of the second extreme and the ordinate of a point, chosen between the two known points of the first extreme, having a distance from the intermediate point equal to the distance between the intermediate point and the known point of the second extreme.
摘要翻译： 用于估计UMTS类型的接收系统中的传输信道的传递函数的方法设想通过重复插值算法来计算包括在与导频符号相对应的已知信道系数之中的多个信道系数，能够 计算确定间隔的第一极限和第二极限之间的中间点（Z，f（Z）），所述第一极值由至少两个已知点形成，所述第二极值由至少一个已知点形成， 要计算的中间点具有横坐标（Z），将定义间隔的间隔的平均点的横坐标值舍入到最接近第一极限的整数，并且具有纵坐标（F（Z））之间的算术平均值 在第二极端的已知点的纵坐标和在第一极端的两个已知点之间选择的点的纵坐标具有与中间物的距离 点等于中间点与第二极限的已知点之间的距离。
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10.发明申请Memory based devcie and method for channel estimation in a digital communication receiver 有权用于数字通信接收机中的基于存储器的设备和信道估计方法公开(公告)号：US20060133456A1
公开(公告)日：2006-06-22
申请号：US10534996
申请日：2002-11-15
申请人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alessandro Ossoli , Afredo Ruscitto
发明人： Donato Ettorre , Maurizio Graziano , Bruno Melis , Andrea Finotello , Alessandro Ossoli , Afredo Ruscitto
IPC分类号： H04B1/707
CPC分类号： H04B1/7093 , H04B1/7113 , H04B1/7117 , H04B2201/70707
摘要： A spread spectrum digital communication receiver, of the type comprising an input memory buffer (16) for storing samples of an input signal (y(k)) and a code generator circuit (30) for generating a re-generated user code, incorporates a device (24) for the estimation of a channel delay profile comprises: a basic correlator (32) having a first input (41) for sequentially reading from a memory location of the input memory buffer (16) a plurality of samples of the input signal (y(k)), a second input (43) for receiving from the code generator circuit (30) a re-generated user code, and an output terminal for generating, by means of a correlation operation between the plurality of samples of the input signal and the regenerated user code, a first value of the channel delay profile energy (DP(1)); and a memory controller circuit (36) for addressing said the memory buffer (16) so that the first input (41) of the basic correlator (32) is successively fed with the content of several memory locations of the memory buffer (16), each addressing operation corresponding to a new correlation operation of the basic correlator (32) for the computation of a new value of the channel delay profile energy (DP(1)).
摘要翻译： 包括用于存储输入信号（y（k））的采样的输入存储器缓冲器（16）和用于生成重新生成的用户代码的代码生成器电路（30）的类型的扩展频谱数字通信接收机包括一个 用于估计信道延迟分布的装置（24）包括：基本相关器（32），具有用于从输入存储器缓冲器（16）的存储器位置顺序读取输入信号的多个样本的第一输入端（41） （y（k）），用于从码发生器电路（30）接收重新生成的用户码的第二输入端（43），以及输出端子，用于通过所述多个采样 输入信号和再生用户代码，信道延迟分布能量（DP（1））的第一值; 以及存储器控制器电路（36），用于寻址所述存储器缓冲器（16），使得所述基本相关器（32）的第一输入端（41）被连续地馈送到所述存储器缓冲器（16）的若干存储器位置的内容， 每个寻址操作对应于用于计算信道延迟分布能量（DP（1））的新值的基本相关器（32）的新的相关操作。
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