a relay selection algorithm was proposed.It was proposed that: relays were selected according to the eigenvalue decomposition of the equivalent relay-destination channel
and the beamforming vectors were designed in a distributed manner.It could be seen that joint processing and information trans-mission between multiple relays were avoided
which could reduce system complexity.Simulation results show that the system proposed can achieve better bit error rate(BER) comparing to the one with multi-relay parallel transmission.