Abstract: An information processing apparatus includes an interrupting signal control device including a mask controller, the mask controller controlling whether or not to mask at least one interrupting signal serving as a trigger signal triggering a predetermined process; and a clock control device including an interrupting clock signal controller, the interrupting clock signal controller sends a clock signal to the interrupting signal control device when at least one interrupting signal is not masked, and stops sending the clock signal to the interrupting signal control device when at least one interrupting signal is masked.

Abstract: A disclosed mobile station apparatus, which receives a downlink signal including pilots, includes a first estimation unit configured to estimate a delay spread of a transmission channel and a Doppler frequency based on the downlink signal; a determination unit configured to determine, based on the delay spread and the Doppler frequency, an interpolation method to be applied to the pilots; and a second estimation unit configured to perform interpolation using the interpolation method to estimate the transmission channel.

Abstract: An information processing apparatus includes an interrupting signal control device including a mask controller, the mask controller controlling whether or not to mask at least one interrupting signal serving as a trigger signal triggering a predetermined process; and a clock control device including an interrupting clock signal controller, the interrupting clock signal controller sends a clock signal to the interrupting signal control device when at least one interrupting signal is not masked, and stops sending the clock signal to the interrupting signal control device when at least one interrupting signal is masked.

Abstract: A disclosed mobile station apparatus, which receives a downlink signal including pilots, includes a first estimation unit configured to estimate a delay spread of a transmission channel and a Doppler frequency based on the downlink signal; a determination unit configured to determine, based on the delay spread and the Doppler frequency, an interpolation method to be applied to the pilots; and a second estimation unit configured to perform interpolation using the interpolation method to estimate the transmission channel.

Abstract: A receiver receives information necessary for receive processing of a data channel via a corresponding control channel and executes the receive processing of the data channel based on the information received via the control channel. In the receiver, whether the control channel of a receive frame F1 has an error is monitored. And if there is an error, the data channel before demodulation of this receive frame is stored, and if the control channel of a retransmission frame F2, which is received subsequently, is normal, the stored data channel and the data channel of the retransmission frame are demodulated using the normal control channel information (parameters) of this retransmission frame, the demodulation results are synthesized, and decoding processing is performed based on the synthesized data.