In this paper, focus on model that combines the spatial multiplexing technique and the cooperative communications, with relay nodes using decode and forward technique where source node and the relay nodes have only one antenna, destination node has multiple antennas; and relay nodes use amplify and forward technique to reduce power consumption and suitable for compact devices; and destination node uses zero forcing (ZF) algorithm. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 17, SOÁ K2- 2014 Application of the spatial division multiplexing technique in cooperative mimo systems • Vo Khac Thanh University of Science, VNU-HCM • Bui Huu Phu DCSELAB, University of Technology, VNU-HCM • Tran Cong Hung Post and Telecommunications Institute of Technology in Hochiminh City (Manuscript Received on December 11th, 2013; Manuscript Revised July 25th, 2014) ABSTRACT: Cooperative MIMO is a combination technique between the single antenna cooperation communications and multipleinput multiple-output systems to achieve the advantages of traditional MIMO. In this paper, we focus on model that combines the spatial multiplexing technique and the cooperative communications, with relay nodes using decode and forward technique where source node and the relay nodes have only one antenna, destination node has multiple antennas; and relay nodes use amplify and forward technique to reduce power consumption and suitable for compact devices; and destination node uses zero forcing (ZF) algorithm. Finally, we show our simulation results in applying the spatial division multiplexing technique in cooperative mimo systems. Keywords: SDM, MIMO-SDM, Cooperative MIMO, Cooperative communication. 1. INTRODUCTION Nowadays, the demand of using broadband [1][2]. However, the implementation of MIMO services and high-speed wireless platform is systems on mobile terminals (referred to as MS) growing very fast, so the radio spectrum resources has to solve many challenges such as small size, are running out. To overcome the issue, the limited energy, channel correlation, [3]. multiple-input multiple-output (MIMO) technique, There are many previous research works which uses multiple antennas at the transmitter focusing on spatial diversity to increase quality, and the receiver, is a promising technique to meet but rarely consider the increase of the system the demand to improve the quality and channel capacity [4]. .
