公开(公告)号：EP2043288A1

公开(公告)日：2009-04-01

申请号：EP08704351.9

申请日：2008-02-01

申请人： Panasonic Corporation

发明人： SHIRAKATA, Naganori, c/o Panasonic Corporation ,  HOSOKAWA, Shuya, c/o Panasonic Corporation ,  MIYANAGA, Kenji, c/o Panasonic Corporation ,  IMAMURA, Koji, c/o Panasonic Corporation

IPC分类号： H04J15/00 ,  H04B7/04 ,  H04J11/00

CPC分类号： H04L25/0228 ,  H04L25/06 ,  H04L27/2647

摘要： An FFT unit (170) separates a received symbol by Fourier conversion into a plurality of subcarriers, and a phase difference detection unit (193) detects a phase difference between 4 pilot carriers and data carriers adjacent to the pilot carriers (adjacent carriers). The decision unit (194) decides whether the phase differences between the pilot carriers and the adjacent carriers detected by the phase difference detection unit (193) fulfill a phase difference condition. Then, the decision unit (194) decides that the received symbol is an HTSIG if the number of phase differences that fulfill the phase difference condition is greater than or equal to a predetermined number, and decides that the received symbol is either a SIG or a DATA if the number of phase differences that fulfill the phase difference condition is less than the predetermined number.

摘要翻译： FFT单元（170）通过傅里叶变换将接收到的符号分离成多个子载波，相位差检测单元（193）检测4个导频载波和与导频载波（相邻载波）相邻的数据载波之间的相位差。 决定单元（194）判定由相位差检测单元（193）检测的导频载波与相邻载波之间的相位差是否满足相位差条件。 然后，如果满足相位差条件的相位差数大于或等于预定数量，则判定单元（194）判定接收到的符号是HTSIG，并且确定接收的符号是SIG或 DATA，如果相位差条件的相位差数量小于预定数量。