Despreading unit, the propagation path estimation unit, the receiving apparatus and interference suppression apparatus, despreading, the propagation path estimation, and receives interference suppression method, a recording medium recording the program and the program

摘要

PPROBLEM TO BE SOLVED: To provide a receiver that needs not always operate the function corresponding to a mode (64QAM) most sensitive to deterioration in precision in an adaptive modulation communication. PSOLUTION: A controller 104 reads a demodulation method from a control signal specifying the demodulation method (QPSK, 16-QAM, 64-QAM) and controls the sampling rate in an analog/digital converter 111 and a despreader 102, the number of pilot symbols used by a propagation path estimation block 106 and the number of pilot symbols inversely spread by the despreader 102. Thus, when the demodulation method is other than the 64-QAM, the controller can set the sampling rate or the like matching the QPSK or the 16-QAM so that there is no need of operating the function corresponding to the 64-QAM at all times. PCOPYRIGHT: (C)2005,JPO&NCIPI