公开(公告)号：US20040141574A1

公开(公告)日：2004-07-22

申请号：US10693260

申请日：2003-10-24

Applicant: Nokia Corporation

Inventor： David Akopian

IPC: H04L007/00 ,  H04L025/00

CPC classification number: H04B1/7075 ,  G01S19/25 ,  G01S19/30 ,  G01S19/34

Abstract: A method for determining the code phase between a code modulated signal 21 received at a receiver and an available replica code sequence which reduces the complexity of time to frequency transform based correlations performs a multiplication (25) between a first vector (23) and a second vector (24) resulting in a third vector (26), which first vector (23) is generated based on the received signal (21) and which second vector (24) is generated based on the replica code sequence, both in an operation including a time to frequency transform. The method further comprises dividing the resulting vector (26) into sections (29) and summing (30) the samples in each section (29) to form a vector (31), upon which a frequency to time transform is performed. The invention relates equally to a corresponding receiver, to an electronic device comprising such a receiver, to a device cooperating with such a receiver and to a corresponding system.

Abstract translation: 一种用于确定在接收机处接收的码调制信号21和可用的复制码序列之间的码相位的方法，其减少了基于频率变换的相关的时间的复杂度，执行第一矢量（23）和第二矢量 导出第三矢量（26）的矢量（24），基于所接收的信号（21）生成第一矢量（23），并且基于复制码序列生成第二矢量（24），包括 一个频率变换的时间。 该方法还包括将所得到的矢量（26）划分成每个部分（29）中的部分（29）和求和（30）样本，以形成向量（31），在该矢量上执行频率到时间变换。 本发明同样涉及相应的接收机，包括这种接收机的电子设备，与这种接收机配合的设备和相应的系统。

公开(公告)号：US20040130486A1

公开(公告)日：2004-07-08

申请号：US10692287

申请日：2003-10-23

Applicant: Nokia Corporation

Inventor： David Akopian

IPC: H04B007/185

CPC classification number: H04B1/7075 ,  H04B1/7093 ,  H04B2201/70707

Abstract: The invention relates to a method for determining the correlation phase between a signal received at a receiver and a replica sequence. A matched filter multiplies samples (21) of the received signal with samples (22) of the replica and sums the resulting products to obtain a correlation value for a specific correlation phase. The samples of the received signal and the replica are shifted relative to each other for each correlation phase that is to be checked. In order to reduce the computational load, it is proposed that results obtained in the correlation calculations for one correlation phase are used by the matched filter also for calculations for a subsequent correlation phase. The invention relates equally to a corresponding receiver, to an electronic device comprising such a receiver, to a device cooperating with such a receiver and to a corresponding system.

Abstract translation: 本发明涉及一种用于确定在接收机处接收的信号与复制序列之间的相关相位的方法。 匹配滤波器将接收信号的样本（21）与副本的样本（22）相乘，并将所得到的乘积求和以获得特定相关相位的相关值。 对于要检查的每个相关相位，接收信号和副本的样本相对于彼此移位。 为了减少计算负荷，提出了在一个相关相位的相关计算中获得的结果也被匹配滤波器用于后续相关相位的计算。 本发明同样涉及相应的接收机，包括这种接收机的电子设备，与这种接收机配合的设备和相应的系统。

公开(公告)号：US20040196894A1

公开(公告)日：2004-10-07

申请号：US10404931

申请日：2003-04-01

Applicant: Nokia Corporation

Inventor： David Akopian

IPC: H04B001/707 ,  H04B001/69

CPC classification number: G06F17/15 ,  G01S19/30 ,  H04B1/7075

Abstract: The invention relates to a method, a processing unit and a system for determining the correlation between consecutive sets of samples of a received, code modulated signal and replica samples. In order to reduce the computational load, the positions of samples in said replica code sequence are grouped, each of these positions and a predetermined number of respective subsequent positions forming a subgroup and each group comprising the respective first position of all subgroups with positions associated with a similar composition of consecutive replica samples. The method combines those values of samples of the first set of samples, which are associated by their position to a respective group, separately for each group to obtain a respective preliminary result. Determining a correlation value for each of the sets of samples then comprises combining the obtained preliminary results for all groups separately for each of the sets of samples.

Abstract translation: 本发明涉及一种用于确定接收的码调制信号和副本样本的连续采样集之间的相关性的方法，处理单元和系统。 为了减少计算负荷，将所述复制码序列中的样本的位置分组，这些位置中的每一个和形成子组的各个后续位置的预定数量，并且每个组包括具有相关位置的位置的所有子组的相应第一位置 相似的连续复制样品组成。 该方法将通过其位置相关联的第一组样本的样本的值与各组分别组合，以获得各自的初步结果。 然后确定每组样本的相关值，然后包括针对每组样本分别组合所获得的所有组的初步结果。

公开(公告)号：US20040012521A1

公开(公告)日：2004-01-22

申请号：US10402390

申请日：2003-03-27

Applicant: Nokia Corporation

Inventor： David Akopian ,  Jari Syrjarinne

IPC: H04K001/00 ,  G01S003/16

CPC classification number: G01S19/30 ,  G01S19/24 ,  G01S19/25

Abstract: The invention relates to a method for determining the correlation between a signal transmitted by a beacon and tracked by a receiver and a reconstructed signal expected to be received at the receiver, wherein the received signal and the reconstructed signal are shifted against each other. In order to provide a possibility of compensating residual sinusoidal modulations in the tracked signal, it is proposed that at each shifting position, the samples of the received and the reconstructed signal are multiplied and integrated separately in a plurality of sections. The results are multiplied with a shifted and complex conjugated version of itself. The products resulting in this second multiplication are integrated to receive a single final value for each shifting position. Finally, the maximum final value resulting for the different shifting positions is determined, the shifting position with the maximum value being considered as the shifting position with the maximum correlation.

公开(公告)号：US20030108126A1

公开(公告)日：2003-06-12

申请号：US10016499

申请日：2001-12-12

Applicant: NOKIA CORPORATION

Inventor： David Akopian

IPC: H04L027/14 ,  H04K001/00

CPC classification number: G01S19/29 ,  G01S19/37 ,  H04L2027/0065

Abstract: A method and corresponding apparatus for accurately determining the offset of the carrier frequency of a received signal from a nominal frequency (the offset due to for example Doppler shifting), such as is done in a ranging receiver when acquiring or tracking a signal transmitted by a beacon (such as a satellite) of a positioning system. The method amplifies a conventional correlation by performing a special noncoherent integration of the real and imaginary components of the output of a conventional (coherent) correlation calculation, resulting in a complex phasor having a phase that bears information about the offset of the carrier frequency from the nominal carrier frequency.

Abstract translation: 一种方法和相应的装置，用于准确地确定来自标称频率（由于例如多普勒频移引起的偏移）的接收信号的载波频率的偏移，诸如在测距接收机中获取或跟踪由a 定位系统的信标（如卫星）。 该方法通过执行常规（相干）相关计算的输出的实部和虚部的特殊非相干积分来放大常规相关性，导致具有相位的复相量，所述相位具有关于载波频率的偏移的信息 标称载波频率。

公开(公告)号：US20040196895A1

公开(公告)日：2004-10-07

申请号：US10406152

申请日：2003-04-01

Applicant: Nokia Corporation

Inventor： David Akopian

IPC: H04B001/707

CPC classification number: H04B1/7093 ,  G01S19/30 ,  G06F17/15 ,  H04B1/7075

Abstract: The invention relates to a method, a processing unit and a system for determining the correlation between samples of a received code modulated signal and samples of replica code sequences. In order to simplify and accelerate the process, it is proposed that the received samples and the replica samples are aligned to each other and that the positions of the samples in the received signal and in the replica code sequences are grouped, each group comprising all positions at which the composition of the values of the samples of all of the replica code sequences is similar. The values of the received samples which are associated to a respective group are combined separately for each group to obtain a respective preliminary result. Then, a correlation value is determined for each replica code sequence by combining the preliminary results obtained for all groups separately for each replica code sequence, taking into account the values of the samples of the replica sequences in the respective group.

Abstract translation: 本发明涉及一种用于确定接收到的码调制信号的样本与复制码序列的样本之间的相关性的方法，处理单元和系统。 为了简化和加速过程，提出接收样本和复本样本彼此对齐，并且接收信号和副本码序列中样本的位置被分组，每组包括所有位置 其中所有复制码序列的样本的值的组成相似。 将与各组相关联的接收样本的值分别组合用于每组，以获得各自的初步结果。 然后，考虑到各组中的副本序列的样本的值，通过组合针对每个复制码序列分别获得的所有组的初步结果，确定每个复制码序列的相关值。

公开(公告)号：US20030110015A1

公开(公告)日：2003-06-12

申请号：US10016654

申请日：2001-12-12

Applicant: NOKIA CORPORATION

Inventor： David Akopian

IPC: G06F015/00

CPC classification number: G01S19/39 ,  G04G7/02

Abstract: An N-clock system, for use for example in a ranging receiver using a Kalman filter. The clock system uses N clocks (to save power by using some clocks that consume less power) with a schedule for switching from one clock to another (so that only one clock is on at any instant of time). It uses an N-clock model that, in case of an application using clock 1 for time interval nullt1, clock 2 for time interval nullt2, . . . , and clock N for time interval nulltN, provides a state update equation for updating the N-clock system state (the state components being typically time and fractional frequency). The state update equation results from propagating the state of the assembly of N clocks (providing a single output, i.e. acting as a single clock) forward from interval to interval until the entire interval of nullt1nullnullt2null . . . nullnulltN is covered.

Abstract translation: 一个N时钟系统，例如在使用卡尔曼滤波器的测距接收机中使用。 时钟系统使用N个时钟（通过使用消耗较少功率的一些时钟来节省功耗），并具有从一个时钟切换到另一个时钟的时间表（从而在任何时刻只有一个时钟）。 它使用N时钟模型，在应用时钟1的时间间隔DELTAt1的情况下，时钟2用于时间间隔DELTAt2。 。 。 并且时间间隔DELTAtN的时钟N提供用于更新N时钟系统状态（状态分量通常为时间和分数频率）的状态更新方程。 状态更新方程是从间隔到间隔向前传播N个时钟（提供单个输出，即充当单个时钟）的组合的状态直到DELTAt1 + DELTAt2 +的整个间隔。 。 。 + DELTAtN被覆盖。

公开(公告)号：US20040165689A1

公开(公告)日：2004-08-26

申请号：US10693332

申请日：2003-10-24

Applicant: Nokia Corporation

Inventor： David Akopian ,  Harri Valio ,  Samuli Pietila ,  Jari Syrjarinne

IPC: H04L025/00

CPC classification number: G01S5/0221 ,  G01S19/20

Abstract: A method for validating detected code modulated signals transmitted by beacons of a positioning system and received by a receiver comprises as a first step performing measurements for the detected beacon signals. Then, at least one of the detected beacon signals is selected as a calibration signal. In a next step, at least one allowed range for results of measurements for detected beacon signals other than said calibration signal are determined based on measurements for the detected calibration signal and on an available reference position of the receiver. Finally, each detection of a beacon signal for which results of performed measurements are outside of an allowed range is rejected. The invention relates equally to a corresponding receiver, to an electronic device comprising such a receiver, to a device cooperating with such a receiver and to a corresponding positioning system.

Abstract translation: 用于验证由定位系统的信标发送并由接收机接收的检测到的码调制信号的方法包括作为对检测到的信标信号进行测量的第一步骤。 然后，选择检测到的信标信号中的至少一个作为校准信号。 在下一步骤中，基于检测到的校准信号的测量和接收机的可用参考位置来确定除了所述校准信号之外的检测到的信标信号的测量结果的至少一个允许范围。 最后，拒绝对所执行的测量结果超出允许范围的信标信号的每次检测。 本发明同样涉及对应的接收机，包括这种接收机的电子设备，与这种接收机配合的设备和相应的定位系统。

公开(公告)号：US20040027281A1

公开(公告)日：2004-02-12

申请号：US10402340

申请日：2003-03-27

Applicant: Nokia Corporation

Inventor： David Akopian ,  Harri Valio

IPC: G01S001/24

CPC classification number: G01S19/24 ,  G01S19/256 ,  G01S19/258

Abstract: The invention relates to a method for determining the time of transmission of a signal part of a code modulated signal transmitted by a beacon of a positioning system and received by a receiver of the positioning system. In order to enable such a determination in weak signal conditions, it is proposed that measured subcomponents of the time of transmission of at least two signal parts are compared with corresponding predicted subcomponents in a way resulting in a combined difference for all signal parts. The comparison is performed for a plurality of assumed errors in the predicted subcomponent. The accurate time of transmission of a signal part is then determined based on the determined error value which results in the smallest combined difference. The invention relates equally to a corresponding receiver and to a corresponding positioning system.

Abstract translation: 本发明涉及一种用于确定由定位系统的信标发射并由定位系统的接收机接收的码调制信号的信号部分的传输时间的方法。 为了在弱信号条件下进行这种确定，提出将至少两个信号部分的传输时间的测量次要部分与对应的预测子部件进行比较，从而导致所有信号部分的组合差异。 对于预测的子部件中的多个假定错误执行比较。 然后，基于确定的误差值来确定信号部分的准确传输时间，其导致最小的组合差异。 本发明同样涉及对应的接收机和对应的定位系统。