Patent ID: 7672386

Claim:
A beam-forming method applied in a multiple input multiple output (MIMO) system, the MIMO system comprising a transmission end and a receiving end, the transmission end being utilized for transmitting a plurality of transmitted signals to the receiving end through a plurality of channels, the beam-forming method comprising: generating a plurality of channel estimations corresponding to the plurality of channels at the receiving end; determining a plurality of first candidate transmitting vectors; selecting a first transmitting vector from the plurality of first candidate transmitting vectors according to the plurality of channel estimations; determining a plurality of second candidate transmitting vectors wherein each second candidate transmitting vector is orthogonal to the first transmitting vector; selecting a second transmitting vector from the second candidate transmitting vectors according to the plurality of channel estimations; and generating the plurality of transmitted signals by combining a first data stream and a second data stream according to the first transmitting vector and the second transmitting vector.