发明名称 |
Apparatus and method for estimating and correcting frequency offset in MB-OFDM UWB system using time frequency hopping |
摘要 |
Provided are an apparatus and method for estimating and correcting a frequency offset in a multiband-Orthogonal Frequency Division Multiplexing Ultra-Wideband system using a time frequency hopping. The method includes the steps of: calculating a tangent input having a first value (X) and a second value (Y) by using PS symbols transferred over same frequency band with respect to one of a plurality of frequency bands used for frequency hopping; calculating tan(X/Y) using the first value (X) and the second value (Y), and calculating an index corresponding to the value of tan(X/Y) from a look-up table created by reflecting a relative frequency offset with respect to a center frequency; calculating indexes representing frequency offsets estimated with respect to remaining frequency bands used for frequency hopping from the look-up table by using the calculated index; extracting an index of a numerical controlled oscillator according to correction positions with respect to a plurality of frequency bands by using the calculated indexes; and correcting the frequency offsets estimated using the extracted indexes according to time frequency patterns by using a numerical controlled oscillator table.
|
申请公布号 |
US7660339(B2) |
申请公布日期 |
2010.02.09 |
申请号 |
US20060634006 |
申请日期 |
2006.12.05 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
SHIN CHEOL-HO;CHOI SUNG-WOO;CHO SANG-IN;KANG KYU-MIN;CHOI SANG-SUNG;PARK KWANG-ROH |
分类号 |
H04B1/18;H04B1/00 |
主分类号 |
H04B1/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|