Patent ID: 7706462

Claim:
A transceiver, comprising: one or more antennas configured to receive a plurality of transmitting signals transmitted by a plurality of transmission antennas; a channel estimating unit configured to estimate a channel of each of the transmitting signals; an error detecting unit configured to perform error detection for each of the transmitting signals based on reliability information added to the corresponding transmitting signal; and a transmission rate determining unit configured to determine a transmission rate of each of the transmitting signals based on at least one of a channel estimation result from the channel estimating unit and an error detection result from the error detecting unit for the corresponding transmitting signal, to adjust the number of the transmission antennas used for transmission or a number of directional beams formed by at least one of the transmission antennas, based on the channel estimation result and the error detection result, and to specify, at a predetermined interval, one of a set of identifiers of the transmission antennas used for the transmission, and a set of identifiers of the directional beams formed by the at least one of the transmission antennas.