| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phasing frequency estimation device which estimates a phasing frequency. <P>SOLUTION: A phasing frequency estimation section 40 calculates a slot phase rotation quantity, based upon data received from a back diffusion processing section 22. The phasing frequency estimation section 40 also calculates the inner product of a fast phasing frequency (fast fD) and the inner product of a slow phasing frequency (slow fD), based upon the calculated slot phase rotation quantity. The phasing frequency estimation section 40 calculates a fast fD estimation candidate and a slow fD estimation candidate, based upon the inner product of the fast fD and the inner product of the slow fD which are calculated. The phasing frequency estimation section 40 then switches fD estimation values, based upon the fast fD estimation candidate and slow fD estimation candidate which are calculated to determine an fD estimation value. The phasing frequency estimation section 40 calculates an fD estimation error, based upon the fast fD estimation candidate and slow fD estimation candidate. <P>COPYRIGHT: (C)2007,JPO&INPIT |
