naa a22 4500 510794823 CHVBK 20180411083332.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11277-012-0636-0 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0636-0 The Downlink Capacity of Single-User SA-MIMO System [Elektronische Daten] [Jianxin Dai, Ming Chen, Pei-Jung Chung] In this paper, a novel multiple antenna system framework, which combines smart antennas (SA) with multiple-input-multiple-output (MIMO) at the transmitter, is proposed. The downlink capacity of the single-user SA-MIMO wireless systems is investigated. The joint optimization problem corresponding to the capacity is deduced. After that, upper bounds of the capacity are given in general case and in the case of equal power allocation, respectively. Furthermore, in the case of equal power allocation and the same direction of departure from one transmit smart antenna to all antenna arrays at the receiver the closed-form expression of the capacity is obtained. Some numerical results are given to show that smart antennas can bring significant capacity gain for the MIMO systems due to the smart antennas gain, without additional spatial degrees of freedom, especially at high SNR with strong correlation among the MIMO channel links or at low SNR. Springer Science+Business Media, LLC., 2012 Smart antenna nationallicence MIMO nationallicence Capacity nationallicence Downlink nationallicence Beam-forming nationallicence Dai Jianxin National Mobile Communications Research Laboratory, Southeast University, 210096, Nanjing, China aut Chen Ming National Mobile Communications Research Laboratory, Southeast University, 210096, Nanjing, China aut Chung Pei-Jung Institute for Digital Communications, School of Engineering, The University of Edinburgh, Edinburgh, Scotland, UK aut Wireless Personal Communications Springer US; http://www.springer-ny.com 69/4(2013-04-01), 1333-1345 0929-6212 69:4<1333 2013 69 11277 https://doi.org/10.1007/s11277-012-0636-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0636-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dai Jianxin National Mobile Communications Research Laboratory, Southeast University, 210096, Nanjing, China aut NATIONALLICENCE 700 1- Chen Ming National Mobile Communications Research Laboratory, Southeast University, 210096, Nanjing, China aut NATIONALLICENCE 700 1- Chung Pei-Jung Institute for Digital Communications, School of Engineering, The University of Edinburgh, Edinburgh, Scotland, UK aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 69/4(2013-04-01), 1333-1345 0929-6212 69:4<1333 2013 69 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer