naa a22 4500 510793770 CHVBK 20180411083329.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11277-012-0757-5 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0757-5 Maximum Achievement Rate Allocation Algorithm for Downlink Multi-User OFDMA Systems [Elektronische Daten] [Tae-Kyeong Cho, Chang-Yeong Oh, Tae-Jin Lee] In multi-user OFDMA systems, adaptive resource allocation has been identified as one of the key technologies to have more flexibility and higher efficiency. Several adaptive subcarrier allocation algorithms with the objective to maximize spectral efficiency or fairness have been proposed. However, quality of service (QoS) requirement of each user may not be supported. Some algorithms considering user's QoS requirement have been introduced, but they do not consider the case that every user's QoS requirement cannot be guaranteed with limited resources. In this paper, we propose a maximum achievement rate allocation (MARA) algorithm as a new adaptive resource allocation algorithm. The proposed MARA algorithm has a goal to improve overall throughput while maximizing achievement rate, i.e., maximize the number of users meeting QoS requirements. In addition, we investigate that MARA is more effective when fractional frequency reuse (FFR) is adopted as a frequency partitioning scheme. Simulation results show that the MARA algorithm improves the achievement rate as well as overall throughput. Moreover, further performance gains are achieved when FFR is adopted. Springer Science+Business Media, LLC., 2012 Achievement rate nationallicence Adaptive resource allocation nationallicence Fractional frequency reuse (FFR) nationallicence OFDMA nationallicence QoS requirement nationallicence Resource management nationallicence Cho Tae-Kyeong College of Information and Communication Engineering, Sungkyunkwan University, 440-746, Suwon, Republic of Korea aut Oh Chang-Yeong College of Information and Communication Engineering, Sungkyunkwan University, 440-746, Suwon, Republic of Korea aut Lee Tae-Jin College of Information and Communication Engineering, Sungkyunkwan University, 440-746, Suwon, Republic of Korea aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1425-1442 0929-6212 70:4<1425 2013 70 11277 https://doi.org/10.1007/s11277-012-0757-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0757-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cho Tae-Kyeong College of Information and Communication Engineering, Sungkyunkwan University, 440-746, Suwon, Republic of Korea aut NATIONALLICENCE 700 1- Oh Chang-Yeong College of Information and Communication Engineering, Sungkyunkwan University, 440-746, Suwon, Republic of Korea aut NATIONALLICENCE 700 1- Lee Tae-Jin College of Information and Communication Engineering, Sungkyunkwan University, 440-746, Suwon, Republic of Korea aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1425-1442 0929-6212 70:4<1425 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer