tailieunhanh - Báo cáo hóa học: "Recent advances in multiuser MIMO systems"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học đề tài : Recent advances in multiuser MIMO systems | de Lamare et al. EURASIP Journal on Wireless Communications and Networking 2011 2011 157 EURASIP Journal on http content 2011 1 157 Wireless Communications and Networking a SprlngerOpen Journal EDITORIAL Open Access Recent advances in multiuser MIMO systems Rodrigo C de Lamare1 Martin Haardt2 Michael Joham3 Didier Le Ruyet4 and David J Love5 We would like to welcome you to the Special Issue on Recent Advances in Multiuser MIMO Systems of the EURASIP Journal on Wireless Communications and Networking JWCN . This issue has collected several research results on various aspects of multiuser MIMO systems including resource allocation precoding and detection algorithms limited feedback techniques and network MIMO. MIMO is a key technology for future wireless communication systems. By exploiting the multi-dimensional properties of wireless channels created by multiple transmit and receive antennas MIMO systems can significantly increase the channel capacity and link robustness of wireless communication and have been widely adopted in many future wireless communication standards . WìmAx 3GPP LTE etc. . Multiuser MIMO algorithms are recently being considered to enhance wireless communications systems when the number of users or connections are greater than one. Multiuser MIMO systems can be broadly categorized into MIMO broadcast channels and MIMO multiple access channels for downlink and uplink situations respectively. The achievable gains of multiuser MIMO in wireless systems are yet to be demonstrated in practice and this is currently the subject of intense research efforts. Nevertheless these techniques are forecast to play a major role in the increase of spectral efficiency of future wireless networks. A number of problems need to be addressed before multiuser MIMO becomes widely adopted. Among these problems are interference mitigation and management resource allocation the amount of feedback information for precoding and coordination .