A wireless communication apparatus (102, 302) comprising: a channel estimation circuit (112, 312), arranged to estimate a channel between the wireless communication apparatus (102, 302) and another wireless communication apparatus at a channel frequency of a current channel of a normal frequency hopping sequence in compliance with a communication specification during at least one first time slot, the wireless communication apparatus (102, 302) and said another wireless communication apparatus each comprising multiple antennae (105, 107, 303, 305; 307, 309); a beamforming control circuit (118, 318), arranged to determine beamforming coefficients according to the estimated channel; a transmit, TX, circuit (116, 316), arranged to apply the beamforming coefficients to transmission of an output data at the channel frequency during at least one second time slot later than said at least one first time slot, wherein during said at least one second time slot, the output data is transmitted to said another wireless communication apparatus via the multiple antennae (105, 107, 303, 305) of the wireless communication apparatus (102, 302); and a receive, RX, circuit (114, 314) arranged to receive a training signal at the channel frequency from said another wireless communication apparatus during said at least one first time slot; wherein the channel estimation circuit (112, 312) is arranged to estimate the channel according to the received training signal and wherein the wireless communication apparatus (102, 302) is arranged to perform communications with said another wireless communication apparatus according to the normal frequency hopping sequence in compliance with the communication specification. a channel estimation circuit (112, 312), arranged to estimate a channel between the wireless communication apparatus (102, 302) and another wireless communication apparatus at a channel frequency of a current channel of a normal frequency hopping sequence in compliance with a communication specification during at least one first time slot, the wireless communication apparatus (102, 302) and said another wireless communication apparatus each comprising multiple antennae (105, 107, 303, 305; 307, 309); a beamforming control circuit (118, 318), arranged to determine beamforming coefficients according to the estimated channel; a transmit, TX, circuit (116, 316), arranged to apply the beamforming coefficients to transmission of an output data at the channel frequency during at least one second time slot later than said at least one first time slot, wherein during said at least one second time slot, the output data is transmitted to said another wireless communication apparatus via the multiple antennae (105, 107, 303, 305) of the wireless communication apparatus (102, 302); and a receive, RX, circuit (114, 314) arranged to receive a training signal at the channel frequency from said another wireless communication apparatus during said at least one first time slot; wherein the channel estimation circuit (112, 312) is arranged to estimate the channel according to the received training signal and wherein the wireless communication apparatus (102, 302) is arranged to perform communications with said another wireless communication apparatus according to the normal frequency hopping sequence in compliance with the communication specification.