Performance of MU-MIMO systems using HMRS technique for various transmission modes

It is the fact that the bandwidth of wireless communication system is such a limited resource that several techniques are selectively applied to increase the bandwidth efficiency. The highest bandwidth efficiency can be taken by applying MU-MIMO technique. For this technique, the complexity of detection at receiving side is rapidly increased by increasing the number of users at transmitting side. Therefore the lower complex detection is necessarily required for MUMIMO system. Recently, the simple detection technique called hybrid-MIMO receiver scheme (HMRS) has been proposed by the authors. However, that study neglected the demands of multiple users for transmitting MIMO modes (STBC or SM) which are crucially unpredictable in practice. In this paper, the performance of MU-MIMO system using HMRS technique to support various types of user transmission modes is presented. The results indicate that the HMRS technique can significantly improve the error rate for any modes of transmission.