naa a22 4500 510792952 CHVBK 20180411083326.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11277-012-0864-3 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0864-3 Two Dimensional Signal Spreading in UMTS LTE: Exploiting Time-Frequency Diversity to Increase Throughput [Elektronische Daten] [J. Blumenstein, M. Šimko, R. Marsalek, Z. Fedra, J. Prokopec, M. Rupp] This paper proposes a two-dimensional spreading method in UMTS Long Term Evolution (LTE). Such a method brings additional time-frequency diversity which is beneficial in terms of the ability to decode transmitted data at the receiver site under multipath fading. Additional diversity is provided due to the fact that chips of transmitted signals are spread using a Walsh-Hadamard spreading sequence over several subcarriers as well as over several time-slots simultaneously. A comparison with state-of-the-art LTE downlink transmission is provided. To enable reproducibility and to increase credibility of our results, an open source Vienna LTE simulator is utilized. LTE transmissions with the proposed 2D spreading are tested on several channel models. Simulations show that apart from an Additive White Gaussian Noise channel model, this 2D spreading based method outperforms the throughput performance of standard LTE. At high Signal to Noise Ratio (SNR), the throughput increase in most channel models is higher than 10 %. The Author(s), 2012 LTE nationallicence 2D Spreading nationallicence Throughput maximization nationallicence VSF-OFCDM nationallicence Vienna LTE simulator nationallicence Blumenstein J. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut Šimko M. Institute of Telecommunications, Vienna University of Technology, Gusshausstrasse 25/389, A-1040, Vienna, Austria aut Marsalek R. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut Fedra Z. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut Prokopec J. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut Rupp M. Institute of Telecommunications, Vienna University of Technology, Gusshausstrasse 25/389, A-1040, Vienna, Austria aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/2(2013-07-01), 1109-1119 0929-6212 71:2<1109 2013 71 11277 https://doi.org/10.1007/s11277-012-0864-3 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0864-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Blumenstein J. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut NATIONALLICENCE 700 1- Šimko M. Institute of Telecommunications, Vienna University of Technology, Gusshausstrasse 25/389, A-1040, Vienna, Austria aut NATIONALLICENCE 700 1- Marsalek R. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut NATIONALLICENCE 700 1- Fedra Z. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut NATIONALLICENCE 700 1- Prokopec J. Department of Radio Electronics, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic aut NATIONALLICENCE 700 1- Rupp M. Institute of Telecommunications, Vienna University of Technology, Gusshausstrasse 25/389, A-1040, Vienna, Austria aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/2(2013-07-01), 1109-1119 0929-6212 71:2<1109 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer