APPARATUS AND METHOD FOR SELECTING RELAY PATH IN A MULTI ANTENNA RELAY SYSTEM USING AMPLIFY-AND-FORWARD SCHEME

摘要

PURPOSE: A device for selecting a relay route in a multi antenna relay system using an amplify and forward technique and a method thereof are provided to obtain an accurate ergodic capacity based on a CSI in the multi antenna relay system which supports an AF relay mode. CONSTITUTION: A first time slot receives a signal, which is transmitted from a source node, through a receiving unit(210). A transmission signal generating unit(212) multiplies an optimal capacity relay matrix which satisfies certain relay power restriction conditions with a signal received from the first time slot. A second time slot transmits a signal, which is generated by the transmission signal generating unit, through a transmission unit(214).