| 摘要 |
PROBLEM TO BE SOLVED: To provide a sneak canceller capable of removing an interference wave, removing a sneak wave having power larger than that of a master station wave, and removing sneak waves whose number is larger than the number of antenna elements. SOLUTION: A Fourier transformation section 8 applies Fourier transformation to an observation point signal from a time region canceller 7. A master station signal generating section 9 generates pilot signals such as SP, SC of the master station signal. An error signal calculating section 10 calculates the difference between the master station signal in a sub-carrier and the observation point signal, and provides the error signal to an inverse Fourier transformation section 11, to convert the signal into a time region signal. An FIR filter<SB>-</SB>1-P to P/AND/FIR filter<SB>-</SB>T coefficient calculating section 12 updates FIR filter coefficients of a space region canceller 6 in batch. COPYRIGHT: (C)2003,JPO |
