Mobile communication apparatus and method including antenna array

The mobile communication apparatus and method for an antenna array is provided. The device having a base station and a mobile station having an antenna array, and measures the downlink characteristics of the antenna-specific channel from the signal transmitted from the base station and determines the long-term information and short-term information reflecting the correlation characteristics of the antenna for each channel from the measured downlink characteristics receiving a mobile station and a feedback signal for transmitting to the base station converts the determined long-term and short-term information to the feedback signal, and extracts a plurality of weights from the long-term and short-term information restored from the received feedback signal, and multiplexes the DPCH signals multiplying a result of the plurality of weight values, respectively, and adds the pilot channel signal to the multiplied result, and characterized by having a base station transmitting the added results to the mobile station via the antenna array. Therefore, even when the antenna number of the antenna array it is possible to reduce the performance deterioration resulting from the increase in the traveling speed of the mobile station, it is possible to significantly reduce the received signal-to-noise ratio required at the mobile station, the same bandwidth using feedback bandwidth efficiently the number can accommodate a user diversity effect can be maximized to fit the beam-forming effect of the channel characteristics, the long-term information is when it is determined at the base station is not determined in the mobile station can be miniaturized for a mobile station can reduce the power consumption of the mobile station It can have the effect that.