Signal Relaying Method for High Data Rate in the MIMO System

This paper deals with an efficient relaying method that guarantees a high data rate in a multi-antenna based wireless communication system. In order to solve the data rate reduction problem that occurs during signal relay using a half-duplex relay node in a wireless communication system, a relaying method using the multiple input multiple output (MIMO) signal detection is proposed. The proposed method considers the space time block code (STBC) based two-way relay technique to improve a data rate. At this time, the inter relay interference (IRI) is generated between each relay nodes. The IRI component can be removed using the MIMO signal detection method based on channel alignment. Using the computer simulation, it is demonstrated that the throughput performance of the proposed method is improved compared to the conventional method.