Electromagnetic steel sheet having excellent magnetic properties and a texture gratly integrated in the 100<001> orientation, and an uncomplicated and low cost production method; with about a 15 cm or more specific resistivity, about a 2. A channel quality information extraction section extracts CQI’s from a received signal. The outputs of the equalizers are combined at chip level via a combiner which provides a single output. The apparatus includes a switch device located along a current path extending between the power supply and docking station, to regulate current flow.