CAJ | 학술논문

为了公平且有效地在OFDMA中继系统下行链路进行资源分配,文章提出了基于效用函数的资源分配算法,并根据凸优化问题的对偶分解理论,提出了一种分布式求解算法,得到了相关问题的全局最优解.理论分析和数值仿真结果表明,文章提出的资源分配算法具有较低的系统复杂度,可以使系统效用函数最大,从而在保证用户公平性的前提下,使系统的和速率容量最大.
위료공평차유효지재OFDMA중계계통하행련로진행자원분배,문장제출료기우효용함수적자원분배산법,병근거철우화문제적대우분해이론,제출료일충분포식구해산법,득도료상관문제적전국최우해.이론분석화수치방진결과표명,문장제출적자원분배산법구유교저적계통복잡도,가이사계통효용함수최대,종이재보증용호공평성적전제하,사계통적화속솔용량최대.
To allocate resource fairly and efficiently in the downlink channel in OFDMA relay system,a utility-based resource allocation algorithm is proposed in this paper.According to the dual decomposition methods of convex optimization theory,a distributed algorithm is developed to solve the involved problem and obtain the global optimal solution.The theoretic analysis and numerical simulation results show that our algorithm has low complexity,and the system utility is maximized so that the sum-rate capacity of the system is maximized while the fairness of users in the system is guaranteed.