naa a22 4500 510796796 CHVBK 20180411083339.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11277-013-1274-x doi (NATIONALLICENCE)springer-10.1007/s11277-013-1274-x Antenna Power Cutback Manipulation to Optimize Relay Power Allocation over MAMR Networks Employing Zero Forcing Scheme [Elektronische Daten] [Mojgan Moradi, Abolfazl Falahati] Power allocation between relays and data streams is an important aspect of MIMO relay systems. Different methods are designed to consider weight matrices within relay channels. Commonly employed methods are based on linearly distributed multi antenna relay beamforming with match filter, zero forcing and MMSE techniques. This article proposes a cutback relay power allocation technique to design a suboptimal beamforming weight matrix by ZF-ZF method to decrease BER considerably at high SNRs. This method allocates the unused relay antenna power to others through the associated relay. This allows maximum workable power to increase; consequently the system performance is improved. Springer Science+Business Media New York, 2013 Multi input multi output (MIMO) nationallicence Multiple antennas multiple relay networks (MAMRs) nationallicence Power allocation nationallicence Zero forcing nationallicence Moradi Mojgan Department of Electrical Engineering (DCCS Lab), Iran University of Science and Technology, Tehran, Iran aut Falahati Abolfazl Department of Electrical Engineering (DCCS Lab), Iran University of Science and Technology, Tehran, Iran aut Wireless Personal Communications Springer US; http://www.springer-ny.com 73/3(2013-12-01), 1215-1225 0929-6212 73:3<1215 2013 73 11277 https://doi.org/10.1007/s11277-013-1274-x text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1274-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moradi Mojgan Department of Electrical Engineering (DCCS Lab), Iran University of Science and Technology, Tehran, Iran aut NATIONALLICENCE 700 1- Falahati Abolfazl Department of Electrical Engineering (DCCS Lab), Iran University of Science and Technology, Tehran, Iran aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 73/3(2013-12-01), 1215-1225 0929-6212 73:3<1215 2013 73 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer