naa a22 4500 510793614 CHVBK 20180411083328.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11277-012-0773-5 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0773-5 A Framework to Optimize the OFDM-Based Multiuser Dynamic Spectrum Access Networks with Frequency Reuse [Elektronische Daten] [Hamed Ahmadi, Yong Chew, Chin Chai] This paper presents a novel framework to optimally solve the spectrum access problem at the central spectrum moderator (CSM) for multiple radio pairs. In the system model considered, the available spectrum is partitioned into N subcarriers, and the proposed CSM assigns subcarriers to multiple radio pairs with the objective to maximize the total achievable bit rate in the network. Each transceiver adopts the OFDM frontend, and transmits only on those subcarriers assigned to it. The proposed algorithm jointly considers the effect of interference from multiple co-channel radios, while at the same time supports all transmitters at their minimum guaranteed bit rate, under individual total transmit power constraint. Our proposed method converts the original NP-hard mixed integer non-linear programming problem into a mixed binary linear programming problem, which can be solved optimally using standard algorithms. Springer Science+Business Media, LLC., 2012 Dynamic spectrum access nationallicence OFDM nationallicence Frequency reuse nationallicence Linear programming nationallicence Ahmadi Hamed Institute for Infocomm Research, 1 Fusionopolis Way, #21-01Connexis (South Tower), 138632, Singapore, Singapore aut Chew Yong Institute for Infocomm Research, 1 Fusionopolis Way, #21-01Connexis (South Tower), 138632, Singapore, Singapore aut Chai Chin Institute for Infocomm Research, 1 Fusionopolis Way, #21-01Connexis (South Tower), 138632, Singapore, Singapore aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1665-1682 0929-6212 70:4<1665 2013 70 11277 https://doi.org/10.1007/s11277-012-0773-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0773-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ahmadi Hamed Institute for Infocomm Research, 1 Fusionopolis Way, #21-01Connexis (South Tower), 138632, Singapore, Singapore aut NATIONALLICENCE 700 1- Chew Yong Institute for Infocomm Research, 1 Fusionopolis Way, #21-01Connexis (South Tower), 138632, Singapore, Singapore aut NATIONALLICENCE 700 1- Chai Chin Institute for Infocomm Research, 1 Fusionopolis Way, #21-01Connexis (South Tower), 138632, Singapore, Singapore aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1665-1682 0929-6212 70:4<1665 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer