It is expected that the reliable end-to-end communication by using the retransmission mechanisms can be fulfilled for reducing the system error rate. In this paper, we study the Hybrid Automatic Repeat Request (HARQ) retransmission scheme in MIMO (Multiple Input Multiple Output) networks. A separated load might be provided in MIMO network environments, and if some data traffic can be failed, the retransmission scheme can be provided to reliable data transmission. Therefore, the MIMO based network can provide noble network service for mobile users.

HARQ, MIMO, Retransmission, System model.