| 摘要 |
PROBLEM TO BE SOLVED: To reduce a bit error rate by use of a radio channel estimation method using the Kalman filter by state space modeling of a radio channel using the time correlation and frequency correlation of a pilot signal in an OFDM radio communication system.SOLUTION: Disclosed is a radio communication system that comprises a transmitter which comprises at least one antenna and can transmit an OFDM signal, and a receiver which can communicate with the transmitter. The receiver comprises: a state space model construction unit which constructs a state space model taking into consideration the time correlation and frequency correlation of a pilot signal transmitted by the transmitter; and a Kalman filter execution unit which estimates the impulse characteristic of a radio channel by applying the Kalman filter to the state space model constructed by the state space model construction unit. |
