Apparatus and method for performing handoff in multiple antenna system

An apparatus and a method for handoff in a multi-antenna system are provided to efficiently and precisely carry out handoff as compared with a single antenna system by executing handoff in consideration of the number of active antennas and the mobility of a mobile terminal. An apparatus for executing handoff in a multi-antenna system comprises channel estimators(309,310), an active antenna confirmer(311), and a handoff determiner(313). The channel estimators(309,310) estimate the channel of a received signal, and confirm state information of the received signal. The active antenna confirmer(311) confirms the number of the active antennas of base stations by using the state information of the received signal, confirmed by the channel estimators(309,310). The handoff determiner(313) determines handoff by using the confirmed active antenna number.