A Study on Resource Allocation in OFDMA Systems

• Main Authors: Liang-Ling Huang, 黃亮穎
• Other Authors: Chin-Fu Chang
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/94347113041422476468

碩士 === 國立暨南國際大學 === 通訊工程研究所 === 97 === In OFDMA resource allocation, to achieve the maximum data rate, subchannel and the responding transmitted power are allocated according to the channel condition. Therefore, how to design a resource allocation algorithm that helps the OFDMA system to achieve the higher sum capacity and fairness among the users becomes the main purpose of this thesis. In this thesis, OFDMA subchannel and power allocation are discussed and proposes two methods modified suboptimal subcarrier allocation algorithm and low complexity iterative power allocation (IPA) algorithm which have been proved to achieve the same performance. Finally, we also propose a fairness index algorithm, using releases fairness deviation among users to achieve the high sum capacity. Simulation results show that the proposed algorithms achieve higher sum capacity than [11] with lower complexity.