naa a22 4500 510795978 CHVBK 20180411083336.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11277-011-0481-6 doi (NATIONALLICENCE)springer-10.1007/s11277-011-0481-6 Cognitive Radio MIMO Gaussian Broadcast Channels with the Power Constraint [Elektronische Daten] [Hai-Lin Xiao, Shan Ouyang, Cheng-Xiang Wang] The cognitive radio multiple-input multiple-output Gaussian broadcast channels are studied where multiple antennas are available for both primary users and secondary users in a spectrum sharing environment, and the sum-rate capacity is also obtained under both the SUs' transmit power constraint and interference power constraint at the primary receivers. The paper principally consists of two steps. First, a duality technique and dirty paper coding are adopted to simplify the channels. Second, we propose an iterative power allocation algorithm to obtain the maximum sum-rate capacity and examine the effects of the constraint parameters on the concerned quantities. Finally, numerical simulation results are presented to validate the proposed theoretical analysis. Springer Science+Business Media, LLC., 2011 Multiple-input multiple-output (MIMO) nationallicence Cognitive radio (CR) nationallicence Broadcast channels (BCs) nationallicence Power allocation nationallicence Xiao Hai-Lin School of Information and Communication, Guilin University of Electronic Technology, 541004, Guilin, China aut Ouyang Shan School of Information and Communication, Guilin University of Electronic Technology, 541004, Guilin, China aut Wang Cheng-Xiang Joint Research Institute for Signal and Image Processing, School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS, Edinburgh, UK aut Wireless Personal Communications Springer US; http://www.springer-ny.com 68/3(2013-02-01), 769-778 0929-6212 68:3<769 2013 68 11277 https://doi.org/10.1007/s11277-011-0481-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-011-0481-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xiao Hai-Lin School of Information and Communication, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 700 1- Ouyang Shan School of Information and Communication, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 700 1- Wang Cheng-Xiang Joint Research Institute for Signal and Image Processing, School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS, Edinburgh, UK aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 68/3(2013-02-01), 769-778 0929-6212 68:3<769 2013 68 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer