naa a22 4500 510795552 CHVBK 20180411083335.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11277-011-0441-1 doi (NATIONALLICENCE)springer-10.1007/s11277-011-0441-1 Optimized Power Allocation for Layered-Steered Space-Time Codes [Elektronische Daten] [Ahmad Salim, Salam Zummo, Samir Al-Ghadhban, Ping-Cheng Yeh] Layered Steered Space-Time Codes (LSSTC) is a recently proposed multiple-input multiple-output system that combines the benefits of vertical Bell Labs space-time (VBLAST) scheme, space-time block codes and beamforming. We suggest a new downlink scheme employing LSSTC with asymmetric power allocation, by assuming that the user feeds the BS with the average signal-to-noise ratio per VBLAST layer through the uplink feedback channel. The motivation behind proposing such a system is to enhance the error performance by assigning power to the layers in an optimal manner. We refer to the system proposed as the optimal power allocation LSSTC (OPA-LSSTC). Our analysis is general such that it includes asymmetric layered systems in which each layer may have different number of antennas and also the power can be assigned to layers asymmetrically. Springer Science+Business Media, LLC., 2011 Layered-steered space-time codes nationallicence LSSTC nationallicence Performance analysis nationallicence Optimal power allocation nationallicence Salim Ahmad Electrical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), P. O. Box 7626, 31261, Dhahran, Saudi Arabia aut Zummo Salam Electrical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), P. O. Box 7626, 31261, Dhahran, Saudi Arabia aut Al-Ghadhban Samir Electrical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), P. O. Box 7626, 31261, Dhahran, Saudi Arabia aut Yeh Ping-Cheng Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan aut Wireless Personal Communications Springer US; http://www.springer-ny.com 68/1(2013-01-01), 95-113 0929-6212 68:1<95 2013 68 11277 https://doi.org/10.1007/s11277-011-0441-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-011-0441-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Salim Ahmad Electrical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), P. O. Box 7626, 31261, Dhahran, Saudi Arabia aut NATIONALLICENCE 700 1- Zummo Salam Electrical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), P. O. Box 7626, 31261, Dhahran, Saudi Arabia aut NATIONALLICENCE 700 1- Al-Ghadhban Samir Electrical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), P. O. Box 7626, 31261, Dhahran, Saudi Arabia aut NATIONALLICENCE 700 1- Yeh Ping-Cheng Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 68/1(2013-01-01), 95-113 0929-6212 68:1<95 2013 68 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer