公开(公告)号：US20150358048A1

公开(公告)日：2015-12-10

申请号：US14831025

申请日：2015-08-20

Applicant: Renesas Electronics Corporation

Inventor： Junya TSUCHIDA

IPC: H04B1/7156 ,  H04L27/26

CPC classification number: H04B1/7156 ,  H04B2001/71563 ,  H04B2201/713 ,  H04L7/0029 ,  H04L27/0014 ,  H04L27/2663 ,  H04L2027/003 ,  H04L2027/0046

Abstract: A frequency correction circuit used in a radio receiving apparatus that receives a preamble signal through one frequency band and also detects a periodic symbol timing in a receiving period of a part of a symbol that composes the preamble signal, the frequency correction circuit includes a generating unit that generates a detection window of a predetermined time width including each of a first symbol timing and a second symbol timing in the receiving period of a remaining symbol that composes the preamble signal, the first and the second symbol timing being previously determined among periodic symbol timings, a detecting unit that sequentially receives a correlation value between the preamble signal and a reference signal and detects a maximum value from the correlation value input during a period when the detection window is opened, and a correction unit that corrects a frequency deviation of the one frequency band.

Abstract translation: 一种在无线电接收装置中使用的频率校正电路，其通过一个频带接收前置信号，并且在构成前置信号的符号的一部分的接收周期中检测周期性符号定时，所述频率校正电路包括：发生单元 其产生包括构成前置信号的剩余符号的接收周期中的第一符号定时和第二符号定时中的每一个的预定时间宽度的检测窗口，在周期性符号定时之间预先确定第一和第二符号定时 检测单元，其顺序地接收前导码信号和参考信号之间的相关值，并且根据在检测窗口打开的时段期间输入的相关值检测最大值;以及校正单元，其校正所述一个的频率偏差 频带。