公开(公告)号：US20160105301A1

公开(公告)日：2016-04-14

申请号：US14543893

申请日：2014-11-18

Applicant: Novatek Microelectronics Corp.

Inventor： Chung-Hsien Hsieh

IPC: H04L27/22

CPC classification number: H04L27/3863

Abstract: A detector and a method for detecting IQ swap are provided. The detector includes a first correlator, a second correlator and a comparator. The first correlator calculates a first correlation value between a received symbol stream and a first conjugated symbol stream. The received symbol stream is generated by a transmission of a known symbol stream through a transmission channel. The first conjugated symbol stream is conjugate complex of the known symbol stream. The second correlator calculates a second correlation value between the first conjugated symbol stream and a second conjugated symbol stream. The second conjugated symbol stream is conjugate complex of the received symbol stream. In accordance with a relationship between the first and second correlation values, the comparator determines whether an in-phase component and a quadrature component in the received symbol stream have been swapped.

Abstract translation: 提供了用于检测IQ交换的检测器和方法。 检测器包括第一相关器，第二相关器和比较器。 第一相关器计算接收符号流和第一共轭符号流之间的第一相关值。 通过传输信道的已知符号流的传输来生成接收到的符号流。 第一个共轭符号流是已知符号流的共轭复合。 第二相关器计算第一共轭符号流和第二共轭符号流之间的第二相关值。 第二共轭符号流是接收到的符号流的共轭复数。 根据第一和第二相关值之间的关系，比较器确定接收符号流中的同相分量和正交分量是否被交换。

公开(公告)号：US09288095B1

公开(公告)日：2016-03-15

申请号：US14597228

申请日：2015-01-15

Applicant: Novatek Microelectronics Corp.

Inventor： Chih-Chun Feng ,  Yung-Hua Hung ,  Yuan-Hsin Chuang ,  Chung-Hsien Hsieh

IPC: H04K1/10 ,  H04L27/26

CPC classification number: H04L27/2666 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675 ,  H04N5/50 ,  H04N21/4382

Abstract: A signal receiving system, a band detection method for a multi-carrier signal and a demodulating apparatus thereof. Each carrier of the multi-carrier signal has a plurality of symbols respectively corresponding to a plurality of time. The band detection method includes: defining a scan area range according to a full band range of the multi-carrier signal; obtaining a reference symbol corresponding to each of the symbols according to time and frequency offset values in the scan area range; performing an operation on each of the symbols and corresponding reference symbol to obtain calibration information of each carrier of the multi-carrier signal; tuning the full band range of the multi-carrier signal according to the calibration information thereof.

Abstract translation: 信号接收系统，多载波信号的频带检测方法及其解调装置。 多载波信号的每个载波具有分别对应于多个时间的多个符号。 频带检测方法包括：根据多载波信号的全频带范围定义扫描区域范围; 根据扫描区域范围内的时间和频率偏移值获得与每个符号对应的参考符号; 对每个符号和对应的参考符号执行操作以获得多载波信号的每个载波的校准信息; 根据其校准信息调整多载波信号的全频带范围。

公开(公告)号：US20160072606A1

公开(公告)日：2016-03-10

申请号：US14534179

申请日：2014-11-06

Applicant: Novatek Microelectronics Corp.

Inventor： Yuan-Hsin Chuang ,  Chung-Hsien Hsieh

IPC: H04J11/00 ,  H04W24/08

CPC classification number: H04L27/2607 ,  H04L27/2666 ,  H04W24/08

Abstract: A device and a method for detecting a guard interval (GI) of an orthogonal frequency division multiplexing (OFDM) signal are provided. The device includes a signal transforming unit and a GI determining unit. The signal transforming unit receives the OFDM signal and sets a predetermination GI to provide a first frequency-domain symbol and a second frequency-domain symbol. The GI determining unit receives the predetermination GI, the first frequency-domain symbol and the second frequency-domain symbol to determine a phase difference between the first frequency-domain symbol and the second frequency-domain symbol and determines the GI of the OFDM signal according to the phase difference.

Abstract translation: 提供了用于检测正交频分复用（OFDM）信号的保护间隔（GI）的装置和方法。 该装置包括信号变换单元和GI确定单元。 信号变换单元接收OFDM信号并设置预定GI以提供第一频域符号和第二频域符号。 GI确定单元接收预定GI，第一频域符号和第二频域符号，以确定第一频域符号和第二频域符号之间的相位差，并根据 到相位差。