TRANSMISSION PATH ESTIMATION DEVICE, EQUALIZATION DEVICE, AND RADIO SYSTEM

摘要

Provided are a transmission path estimation device and an equalization device capable of realizing an excellent transmission path estimation accuracy with a small operation processing quantity. The equalization device includes: a transmission path estimation unit including a ZF calculation and clipping process unit, and a correlation process unit; a weight calculation unit; and an equalization filter. The ZF calculation and clipping process unit calculates a pilot reference signal according to ZF by using a signal obtained by converting a pilot code into a frequency region, clips the gain of the calculated pilot reference signal by a predetermined value, and generates a clipped pilot reference signal. The correlation process unit estimates the transmission path characteristic of the frequency region by correlating the pilot reception signal of the frequency region with the clipped pilot reference signal. The weight calculation unit calculates an equalization weight from the transmission path characteristic of the frequency region. The equalization filter equalizes the reception signal of the frequency region by the equalization weight.