A method of receiving data transmitted by a plurality of communications devices includes receiving at each of a plurality of M antennas reference signals transmitted by each of a plurality of K communications devices, and processing by each of a plurality of antenna modules the reference signals. The processing by each of the antenna module includes estimating for each of the K detected reference signals received from the K communications devices a sample of a radio channel through which the received signals have passed, generating for each of the K samples of the radio channel a K×K partial matrix forming a part of a signal processing matrix for performing zero forcing equalisation of the received signals, and transmitting the partial matrix K×K from each of the M antenna modules to a central processing unit.