会议专题

Optimal Subcarrier and Relay Assignment in Cooperative OFDMA Systems

  This paper investigates relay selection and subcarrier allocation in cooperative OFDMA systems where users with best-effort(BE)service and rate-constrained(RC)service coexist.We formulate the problem as a binary integer linear programming to maximize the network data rate with quality-of-service(QoS)requirements.A greedy algorithm is proposed for the degradation problem of only BE users and a direct search algorithm for hybrid users is proposed to reduce the number of variables and the size of the constraint matrix.Simulation results demonstrate that the proposed algorithm significantly improves the computing speed and enhances the system total throughput.

resource allocation OFDMA relay selection quality-of-service (QoS)

Zhanke Yu Yanhua Zhang

College of Communications Engineering,PLA University of Science and Technology Jiangsu Lightning Protection Center Nanjing,China

国际会议

2017 IEEE 2nd Advanced Information Technology,Electronic and Automation Control Conference(IAEAC 2017)(2017 IEEE 第2届先进信息技术、电子与自动化控制国际会议)

重庆

英文

727-730

2017-03-25(万方平台首次上网日期,不代表论文的发表时间)