公开(公告)号：US09367518B2

公开(公告)日：2016-06-14

申请号：US14066785

申请日：2013-10-30

Applicant: Broadcom Corporation

Inventor： Francis Swarts ,  Mark Kent

IPC: G06F17/10 ,  G06F17/15 ,  H04B1/7156

CPC classification number: G06F17/15 ,  H04B2001/71563

Abstract: Aspects of a method and system for efficient full resolution correlation may include correlating a first signal with a second signal at a rate corresponding to a first discrete signal, wherein each sample of the first signal may be generated by summing a plurality of consecutive samples from the first discrete signal, and the second signal may be generated by summing the plurality of consecutive samples from a second discrete signal. The correlating may be performed by a matched filter and/or a correlator. The first signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the first discrete signal comprising N*L samples. The second signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the second discrete signal comprising N*L samples. The first signal and the second signal may be correlated by multiplying the N samples of the first signal with the N samples of the second signal in N multipliers and summing a plurality of outputs of the multipliers. A maximum of the correlating may be determined to achieve synchronization between the first discrete signal and the second discrete signal.

公开(公告)号：US20140059102A1

公开(公告)日：2014-02-27

申请号：US14066785

申请日：2013-10-30

Applicant: Broadcom Corporation

Inventor： Francis Swarts ,  Mark Kent

IPC: G06F17/15

CPC classification number: G06F17/15 ,  H04B2001/71563

Abstract: Aspects of a method and system for efficient full resolution correlation may include correlating a first signal with a second signal at a rate corresponding to a first discrete signal, wherein each sample of the first signal may be generated by summing a plurality of consecutive samples from the first discrete signal, and the second signal may be generated by summing the plurality of consecutive samples from a second discrete signal. The correlating may be performed by a matched filter and/or a correlator. The first signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the first discrete signal comprising N*L samples. The second signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the second discrete signal comprising N*L samples. The first signal and the second signal may be correlated by multiplying the N samples of the first signal with the N samples of the second signal in N multipliers and summing a plurality of outputs of the multipliers. A maximum of the correlating may be determined to achieve synchronization between the first discrete signal and the second discrete signal.

Abstract translation: 用于有效全分辨率相关的方法和系统的方面可以包括以对应于第一离散信号的速率将第一信号与第二信号相关联，其中第一信号的每个采样可以通过将来自 第一离散信号，并且第二信号可以通过从第二离散信号求和多个连续采样来产生。 相关可以由匹配滤波器和/或相关器执行。 包括N个样本的第一信号可以通过从包括N * L个样本的第一离散信号中对每个N个采样的L个连续样本求和来生成。 包括N个样本的第二信号可以通过从包括N * L个样本的第二离散信号中对N个样本中的每一个求和L个连续样本来生成。 第一信号和第二信号可以通过将第一信号的N个采样与N个乘法器中的第二信号的N个采样相乘并对乘法器的多个输出求和来相关。 可以确定相关的最大值以实现第一离散信号和第二离散信号之间的同步。

公开(公告)号：US09369978B2

公开(公告)日：2016-06-14

申请号：US14076573

申请日：2013-11-11

Applicant: Broadcom Corporation

Inventor： Francis Swarts ,  Mark Kent

IPC: H04W56/00 ,  H04J11/00 ,  H04L27/26

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04L27/2655 ,  H04L27/2662 ,  H04L27/2671 ,  H04L27/2675

Abstract: A mobile device receives a signal, from a base station, comprising a primary synchronization sequence (PSS) and a secondary synchronization sequence (SSS). The mobile device utilizes two different sampling rates to perform the PSS synchronization and the SSS detection individually. For example, the mobile device synchronizes to the received PSS at a first sampling rate such as 0.96 MHz, which is determined based on the PSS transmission rate and/or the length of the received PSS. The mobile device detects the received SSS at a second sampling rate such as 1.92 MHz, which equals to the sampling rate for an analog-to-digital conversion at the mobile device. The received PSS and associated symbol timing are detected through the PSS synchronization to support the SSS detection. The detected SSS is used to acquire cell-specific parameters such as cell ID. The acquired cell-specific parameters ensure proper communications between the mobile device and the base station.

公开(公告)号：US09215712B2

公开(公告)日：2015-12-15

申请号：US13758526

申请日：2013-02-04

Applicant: Broadcom Corporation

Inventor： Francis Swarts ,  Mark Kent

IPC: H04W72/04 ,  H04L27/26 ,  H04J11/00 ,  H04W4/00 ,  H04L27/00

CPC classification number: H04W72/0453 ,  H04J11/0069 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2686 ,  H04L2027/0034 ,  H04L2027/0087

Abstract: A mobile device receives a signal comprising a PSS and a SSS. The mobile device performs iterative MFHT utilizing a reduced number of MFH branches. At each iteration, frequency offset estimation and Cell-ID detection are concurrently performed. An iteration starts with selecting initial frequency offsets spanning a frequency offset estimation range. The selected initial frequency offsets are placed in the MFH branches. A particular MFH branch with a maximum PSS correlation peak magnitude is selected at the iteration. A frequency offset estimate in the selected MFH branch is utilized for frequency control. The frequency offset estimation range utilized for the current iteration is reduced for the next iteration. A Cell-ID is declared if the Cell-ID is consistently detected not only within a particular iteration on the basis of having detected consistent cell ID information for the first and second halves of a radio frame, but also from iteration to iteration.

Abstract translation: 移动设备接收包括PSS和SSS的信号。 移动设备利用减少数量的MFH分支执行迭代MFHT。 在每次迭代时，同时执行频偏估计和小区ID检测。 迭代开始于选择跨越频率偏移估计范围的初始频率偏移。 所选择的初始频率偏移位于MFH分支中。 在迭代中选择具有最大PSS相关峰值幅度的特定MFH分支。 所选MFH分支中的频率偏移估计用于频率控制。 用于当前迭代的频率偏移估计范围在下一次迭代中减少。 如果基于已经检测到无线电帧的第一和第二半部分的一致的小区ID信息，而且从迭代到迭代，则不仅在特定迭代中一致地检测小区ID，否则将声明小区ID。

公开(公告)号：US08649752B2

公开(公告)日：2014-02-11

申请号：US13767760

申请日：2013-02-14

Applicant: Broadcom Corporation

Inventor： Francis Swarts ,  Mark Kent

IPC: H04B1/16

CPC classification number: H04B1/16 ,  H03J7/02

Abstract: Aspects of a method and system for reducing the complexity of multi-frequency hypothesis testing using an iterative approach may include estimating a frequency offset of a received signal via a plurality of iterative frequency offset hypotheses tests. The iterative frequency offset hypotheses may be adjusted for each iteration. A correlation may be done between a primary synchronization signal (PSS), and one or more frequency offset versions of a received signal to control the adjustment of the iterative frequency offset hypotheses. A frequency of the received local oscillator signal may be adjusted based on the estimated frequency offset. One or more frequency offset version of the received signal may be generated via one or more multiplication, and the multiplication may be achieved via a multiplication signal corresponding to one or more frequency offsets. The frequency offset of the received signal may be estimated via the correlation.

Abstract translation: 用于降低使用迭代方法的多频率假设检验的复杂度的方法和系统的方面可以包括通过多次迭代频率偏移假设测试来估计接收信号的频率偏移。 迭代频偏假设可以针对每个迭代进行调整。 可以在主同步信号（PSS）和接收信号的一个或多个频率偏移版本之间进行相关性，以控制迭代频率偏移假设的调整。 可以基于估计的频率偏移来调整接收到的本地振荡器信号的频率。 可以经由一个或多个乘法来生成接收信号的一个或多个频率偏移版本，并且可以通过对应于一个或多个频率偏移的乘法信号来实现乘法。 可以经由相关来估计接收信号的频率偏移。

公开(公告)号：US20130157602A1

公开(公告)日：2013-06-20

申请号：US13767760

申请日：2013-02-14

Applicant: Broadcom Corporation

Inventor： Francis Swarts ,  Mark Kent

IPC: H04B1/16

CPC classification number: H04B1/16 ,  H03J7/02

Abstract: Aspects of a method and system for reducing the complexity of multi-frequency hypothesis testing using an iterative approach may include estimating a frequency offset of a received signal via a plurality of iterative frequency offset hypotheses tests. The iterative frequency offset hypotheses may be adjusted for each iteration. A correlation may be done between a primary synchronization signal (PSS), and one or more frequency offset versions of a received signal to control the adjustment of the iterative frequency offset hypotheses. A frequency of the received local oscillator signal may be adjusted based on the estimated frequency offset. One or more frequency offset version of the received signal may be generated via one or more multiplication, and the multiplication may be achieved via a multiplication signal corresponding to one or more frequency offsets. The frequency offset of the received signal may be estimated via the correlation.

Abstract translation: 用于降低使用迭代方法的多频率假设检验的复杂度的方法和系统的方面可以包括通过多次迭代频率偏移假设测试来估计接收信号的频率偏移。 迭代频偏假设可以针对每个迭代进行调整。 可以在主同步信号（PSS）和接收信号的一个或多个频率偏移版本之间进行相关性，以控制迭代频率偏移假设的调整。 可以基于估计的频率偏移来调整接收到的本地振荡器信号的频率。 可以经由一个或多个乘法来生成接收信号的一个或多个频率偏移版本，并且可以通过对应于一个或多个频率偏移的乘法信号来实现乘法。 可以经由相关来估计接收信号的频率偏移。

公开(公告)号：US20130142165A1

公开(公告)日：2013-06-06

申请号：US13758526

申请日：2013-02-04

Applicant: Broadcom Corporation

Inventor： Francis Swarts ,  Mark Kent

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04J11/0069 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2686 ,  H04L2027/0034 ,  H04L2027/0087

Abstract: A mobile device receives a signal comprising a PSS and a SSS. The mobile device performs iterative MFHT utilizing a reduced number of MFH branches. At each iteration, frequency offset estimation and Cell-ID detection are concurrently performed. An iteration starts with selecting initial frequency offsets spanning a frequency offset estimation range. The selected initial frequency offsets are placed in the MFH branches. A particular MFH branch with a maximum PSS correlation peak magnitude is selected at the iteration. A frequency offset estimate in the selected MFH branch is utilized for frequency control. The frequency offset estimation range utilized for the current iteration is reduced for the next iteration. A Cell-ID is declared if the Cell-ID is consistently detected not only within a particular iteration on the basis of having detected consistent cell ID information for the first and second halves of a radio frame, but also from iteration to iteration.

Abstract translation: 移动设备接收包括PSS和SSS的信号。 移动设备利用减少数量的MFH分支执行迭代MFHT。 在每次迭代时，同时执行频偏估计和小区ID检测。 迭代开始于选择跨越频率偏移估计范围的初始频率偏移。 所选择的初始频率偏移位于MFH分支中。 在迭代中选择具有最大PSS相关峰值幅度的特定MFH分支。 所选MFH分支中的频率偏移估计用于频率控制。 用于当前迭代的频率偏移估计范围在下一次迭代中减少。 如果基于已经检测到无线电帧的第一和第二半部分的一致的小区ID信息，而且从迭代到迭代，则不仅在特定迭代中一致地检测小区ID，否则将声明小区ID。