公开(公告)号：US20170324587A1

公开(公告)日：2017-11-09

申请号：US15148691

申请日：2016-05-06

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Xingqin Lin ,  Yi-Pin Eric Wang ,  Ansuman Adhikary

IPC: H04L25/02 ,  H04B1/7136 ,  H04J11/00 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L25/0204 ,  H04B1/7136 ,  H04B2001/71367 ,  H04B2201/71353 ,  H04J11/0023 ,  H04L5/0007 ,  H04L27/261 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2662 ,  H04L27/2675 ,  H04W56/0045 ,  H04W74/0833

Abstract: A receiver baseband processor and method for performing preamble detection and Time-of-Arrival, ToA, estimation for a single-tone frequency hopping random access preamble. The processor FFT processes a received signal and identifies logical tones. For each logical tone, the processor reads received symbols; determines a ToA estimate; forms a statistic based on the ToA estimate; compares the statistic to a preamble threshold; and when the statistic is greater than or equal to the threshold, determines a preamble is present and utilizes the ToA estimate for a timing advance command.

公开(公告)号：US09749006B1

公开(公告)日：2017-08-29

申请号：US15374285

申请日：2016-12-09

Applicant: TrellisWare Technologies, Inc.

Inventor： Cenk Kose ,  Keith M. Chugg

IPC: H04B1/10 ,  H04B1/715 ,  H04L25/03

CPC classification number: H04B1/715 ,  H04B1/10 ,  H04B2001/7152 ,  H04B2201/71353 ,  H04L25/03853

Abstract: The estimation and mitigation of swept-tone interferers includes receiving a composite signal comprising a signal of interest and a swept-tone interferer over an observation bandwidth or a hop bandwidth in a frequency-hopping system. The estimation of the interfering signal may be based on modeling the interferer as a magnitude periodic signal comprising non-overlapping, contiguous epochs, where each epoch may comprise a common pulse shape and a distinct phase rotation. The modeling may be based over the observation bandwidth, the hop bandwidth, or after combining the signal over all the frequency hop bandwidths. The period of the magnitude-periodic signal may be initially determined, and the common pulse shape and each of the distinct phase rotations may then be estimated. These estimates may be used to reconstruct an estimate of the swept-tone interferer, which may be subtracted from the composite signal to generate an interference-mitigated signal of interest.

公开(公告)号：US20170250729A1

公开(公告)日：2017-08-31

申请号：US15374285

申请日：2016-12-09

Applicant: TrellisWare Technologies, Inc.

Inventor： Cenk Kose ,  Keith M. Chugg

IPC: H04B1/715 ,  H04L25/03

CPC classification number: H04B1/715 ,  H04B1/10 ,  H04B2001/7152 ,  H04B2201/71353 ,  H04L25/03853

Abstract: The estimation and mitigation of swept-tone interferers includes receiving a composite signal comprising a signal of interest and a swept-tone interferer over an observation bandwidth or a hop bandwidth in a frequency-hopping system. The estimation of the interfering signal may be based on modeling the interferer as a magnitude periodic signal comprising non-overlapping, contiguous epochs, where each epoch may comprise a common pulse shape and a distinct phase rotation. The modeling may be based over the observation bandwidth, the hop bandwidth, or after combining the signal over all the frequency hop bandwidths. The period of the magnitude-periodic signal may be initially determined, and the common pulse shape and each of the distinct phase rotations may then be estimated. These estimates may be used to reconstruct an estimate of the swept-tone interferer, which may be subtracted from the composite signal to generate an interference-mitigated signal of interest.

公开(公告)号：US10063366B2

公开(公告)日：2018-08-28

申请号：US15269320

申请日：2016-09-19

Applicant: QUALCOMM Incorporated

Inventor： Marco Zanuso ,  Giovanni Marucci ,  Tsai-Pi Hung ,  Francesco Gatta ,  Bo Sun

IPC: H03D3/24 ,  H04L7/033 ,  H04W72/04 ,  H04B1/40 ,  H03L7/08 ,  H03L7/197 ,  H04B1/713

CPC classification number: H04L7/0331 ,  H03L7/08 ,  H03L7/087 ,  H03L7/099 ,  H03L7/113 ,  H03L7/1974 ,  H03L7/1976 ,  H03L2207/06 ,  H04B1/40 ,  H04B1/713 ,  H04B2201/71353 ,  H04W72/0453

Abstract: A fast frequency hopping implementation in a phase lock loop (PLL) circuit achieves a PLL lock to a new frequency in a very short period of time. In one instant, frequency allocation at a transceiver is changed. In response, a local oscillator frequency hops to a new center frequency based on the changed frequency allocation. The hopping to the new center frequency is based on two-point modulation of a phase locked loop.

公开(公告)号：US08107356B2

公开(公告)日：2012-01-31

申请号：US11317239

申请日：2005-12-27

Applicant: Yun-Ok Cho ,  Young-Kyun Kim ,  Joon-Young Cho ,  Ju-Ho Lee ,  Peter Jung ,  Tobias Scholand ,  Guido Bruck ,  Thomas Faber

Inventor： Yun-Ok Cho ,  Young-Kyun Kim ,  Joon-Young Cho ,  Ju-Ho Lee ,  Peter Jung ,  Tobias Scholand ,  Guido Bruck ,  Thomas Faber

IPC: H04J11/00

CPC classification number: H04B1/713 ,  H04B2201/71353 ,  H04L5/0007 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0228 ,  H04L25/0248 ,  H04L25/03019 ,  H04L25/03159 ,  H04L27/2602 ,  H04L27/2628 ,  H04L27/265 ,  H04L2025/03414 ,  H04L2025/03541 ,  H04L2025/03624

Abstract: Provided is an apparatus for signal transmission in a Fast Frequency Hopping-Orthogonal Frequency Division Multiplexing (FFH-OFDM) communication system which divides all of the available frequency bands into a plurality of sub-carrier bands and includes a plurality of sub-channels each including at least one sub-carrier band. The apparatus includes: a Fast Frequency Hopping (FFH) unit for allocating input data to a number of selected sub-carriers from among the plurality of sub-carriers and for performing fast frequency hopping in accordance with a fast frequency hopping pattern to generate FFH signals, wherein one or more pieces of data comprise the input data and each of the one or more pieces of data is allocated to one of the selected sub-carriers; a Fast Fourier Transform (FFT) unit for performing FFT on FFH signals; a controller for inserting null data into remaining sub-carriers, the remaining sub-carriers comprising sub-carriers other than the selected sub-carriers; a first Inverse Fast Fourier Transform (IFFT) unit for performing IFFT on both the selected sub-carriers comprising the input data and the remaining sub-carriers comprising the inserted null data to generate first IFFT signals; and a transmitter for transmitting the first IFFT signals.

Abstract translation: 提供了一种在快速跳频 - 正交频分复用（FFH-OFDM）通信系统中用于信号传输的装置，其将所有可用频带划分成多个子载波频带，并且包括多个子信道，每个子信道包括 至少一个子载波频带。 该装置包括：快速跳频（FFH）单元，用于从多个子载波中分配输入数据到多个选择的子载波，并根据快速跳频模式执行快速跳频以产生FFH信号 其中一条或多条数据包括所述输入数据，并且所述一条或多条数据中的每条数据被分配给所选择的子载体之一; 用于对FFH信号执行FFT的快速傅里叶变换（FFT）单元; 用于将零数据插入剩余子载波的控制器，其余子载波包括除所选子载波之外的子载波; 第一逆快速傅里叶变换（IFFT）单元，用于对包括输入数据的所选择的子载波和包括插入的空数据的剩余子载波执行IFFT以产生第一IFFT信号; 以及用于发送第一IFFT信号的发射机。

公开(公告)号：US20230308131A1

公开(公告)日：2023-09-28

申请号：US18022735

申请日：2021-07-21

Applicant: Analog Devices, Inc.

Inventor： Hakim SAHEB

IPC: H04B1/7136

CPC classification number: H04B1/7136 ,  H04B2201/71384 ,  H04B2001/71365 ,  H04B2201/71353

Abstract: Multiple transmit and receive channels in a communication transceiver may be dynamically configured using corresponding channel registers. In order to support fast frequency hopping, arbitrary sample rate change or profile switching, the present disclosure proposes a profile-based direct memory access (PDMA) that can be used to transfer data from a memory and program specific profile registers in a randomly accessed addressing manner. PDMAs can offload the system processor from reprogramming many system registers based on external or internal events in a multi channels communication system. Furthermore, a PDMA based DMA controller is proposed to configure the fast frequency hopping registers of the transceiver based on PDMA.

公开(公告)号：US20170310458A1

公开(公告)日：2017-10-26

申请号：US15269320

申请日：2016-09-19

Applicant: QUALCOMM Incorporated

Inventor： Marco ZANUSO ,  Giovanni MARUCCI ,  Tsai-Pi HUNG ,  Francesco GATTA ,  Bo SUN

IPC: H04L7/033 ,  H04W72/04 ,  H04B1/40

CPC classification number: H04L7/0331 ,  H03L7/08 ,  H03L7/087 ,  H03L7/099 ,  H03L7/113 ,  H03L7/1974 ,  H03L7/1976 ,  H03L2207/06 ,  H04B1/40 ,  H04B1/713 ,  H04B2201/71353 ,  H04W72/0453

Abstract: A fast frequency hopping implementation in a phase lock loop (PLL) circuit achieves a PLL lock to a new frequency in a very short period of time. In one instant, frequency allocation at a transceiver is changed. In response, a local oscillator frequency hops to a new center frequency based on the changed frequency allocation. The hopping to the new center frequency is based on two-point modulation of a phase locked loop.

公开(公告)号：US20060268675A1

公开(公告)日：2006-11-30

申请号：US11317239

申请日：2005-12-27

Applicant: Yun-Ok Cho ,  Young-Kyun Kim ,  Joon-Young Cho ,  Ju-Ho Lee ,  Peter Jung ,  Tobias Scholand ,  Guido Bruck ,  Thomas Faber

Inventor： Yun-Ok Cho ,  Young-Kyun Kim ,  Joon-Young Cho ,  Ju-Ho Lee ,  Peter Jung ,  Tobias Scholand ,  Guido Bruck ,  Thomas Faber

IPC: H04J11/00

CPC classification number: H04B1/713 ,  H04B2201/71353 ,  H04L5/0007 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0228 ,  H04L25/0248 ,  H04L25/03019 ,  H04L25/03159 ,  H04L27/2602 ,  H04L27/2628 ,  H04L27/265 ,  H04L2025/03414 ,  H04L2025/03541 ,  H04L2025/03624

Abstract: Provided is an apparatus for signal transmission in a Fast Frequency Hopping-Orthogonal Frequency Division Multiplexing (FFH-OFDM) communication system which divides all of the available frequency bands into a plurality of sub-carrier bands and includes a plurality of sub-channels each including at least one sub-carrier band. The apparatus includes: a Fast Frequency Hopping (FFH) unit for allocating input data to a number of selected sub-carriers from among the plurality of sub-carriers and for performing fast frequency hopping in accordance with a fast frequency hopping pattern to generate FFH signals, wherein one or more pieces of data comprise the input data and each of the one or more pieces of data is allocated to one of the selected sub-carriers; a Fast Fourier Transform (FFT) unit for performing FFT on FFH signals; a controller for inserting null data into remaining sub-carriers, the remaining sub-carriers comprising sub-carriers other than the selected sub-carriers; a first Inverse Fast Fourier Transform (IFFT) unit for performing IFFT on both the selected sub-carriers comprising the input data and the remaining sub-carriers comprising the inserted null data to generate first IFFT signals; and a transmitter for transmitting the first IFFT signals.

Abstract translation: 提供了一种在快速跳频 - 正交频分复用（FFH-OFDM）通信系统中用于信号传输的装置，其将所有可用频带划分成多个子载波频带，并且包括多个子信道，每个子信道包括 至少一个子载波频带。 该装置包括：快速跳频（FFH）单元，用于从多个子载波中分配输入数据到多个选择的子载波，并根据快速跳频模式执行快速跳频以产生FFH信号 其中一条或多条数据包括所述输入数据，并且所述一条或多条数据中的每条数据被分配给所选择的子载体之一; 用于对FFH信号执行FFT的快速傅里叶变换（FFT）单元; 用于将零数据插入剩余子载波的控制器，其余子载波包括除所选子载波之外的子载波; 第一逆快速傅里叶变换（IFFT）单元，用于对包括输入数据的所选择的子载波和包括插入的空数据的剩余子载波执行IFFT以产生第一IFFT信号; 以及用于发送第一IFFT信号的发射机。