An electronic device comprising: circuitry configured to: communicate a capability field of a capabilities element defined in a wireless network standard with a receiver; and transmits signals to the receiver based on information included in the capabilities element, so as to establish a wireless communication channel, characterized in that the capability field includes at least a first field including a capability of performing a transmission beamforming and a second field including maximum dimension information indicating a maximum number of streams corresponding to the capability of a beamformer, and the circuitry is further configured to: transmit a sounding packet including training sequences to the receiver, wherein a spatial streams number of the training sequences is set as a first number; receive feedback information from the receiver, the feedback information being generated based on a channel matrix estimated based on the sounding packet at the receiver, a number of columns of the channel matrix being equal to the first number, wherein a dimension of the feedback information is suppressed by reducing the number of rows of the channel matrix to not exceed the maximum number of streams; and transmit a beamformed signal weighted by a weight matrix to the receiver, the weight matrix being generated based on the feedback information. circuitry configured to: communicate a capability field of a capabilities element defined in a wireless network standard with a receiver; and transmits signals to the receiver based on information included in the capabilities element, so as to establish a wireless communication channel, characterized in that the capability field includes at least a first field including a capability of performing a transmission beamforming and a second field including maximum dimension information indicating a maximum number of streams corresponding to the capability of a beamformer, and the circuitry is further configured to: transmit a sounding packet including training sequences to the receiver, wherein a spatial streams number of the training sequences is set as a first number; receive feedback information from the receiver, the feedback information being generated based on a channel matrix estimated based on the sounding packet at the receiver, a number of columns of the channel matrix being equal to the first number, wherein a dimension of the feedback information is suppressed by reducing the number of rows of the channel matrix to not exceed the maximum number of streams; and transmit a beamformed signal weighted by a weight matrix to the receiver, the weight matrix being generated based on the feedback information. communicate a capability field of a capabilities element defined in a wireless network standard with a receiver; and transmits signals to the receiver based on information included in the capabilities element, so as to establish a wireless communication channel, characterized in that the capability field includes at least a first field including a capability of performing a transmission beamforming and a second field including maximum dimension information indicating a maximum number of streams corresponding to the capability of a beamformer, and the circuitry is further configured to: transmit a sounding packet including training sequences to the receiver, wherein a spatial streams number of the training sequences is set as a first number; receive feedback information from the receiver, the feedback information being generated based on a channel matrix estimated based on the sounding packet at the receiver, a number of columns of the channel matrix being equal to the first number, wherein a dimension of the feedback information is suppressed by reducing the number of rows of the channel matrix to not exceed the maximum number of streams; and transmit a beamformed signal weighted by a weight matrix to the receiver, the weight matrix being generated based on the feedback information. transmit a sounding packet including training sequences to the receiver, wherein a spatial streams number of the training sequences is set as a first number; receive feedback information from the receiver, the feedback information being generated based on a channel matrix estimated based on the sounding packet at the receiver, a number of columns of the channel matrix being equal to the first number, wherein a dimension of the feedback information is suppressed by reducing the number of rows of the channel matrix to not exceed the maximum number of streams; and transmit a beamformed signal weighted by a weight matrix to the receiver, the weight matrix being generated based on the feedback information.