通信学报Issue(4)：17-24,8.DOI:10.3969/j.issn.1000-436x.2014.04.003
基于多维离散粒子群优化的协同OFDMA系统跨层资源分配
Multi-values discrete particle swarm optimization for cross layer resource allocation in cooperative OFDMA systems
摘要
Abstract
The resource allocation problem in cooperative OFDMA systems with mobile stations (MS) on multi-services was investigated. In order to maximize the sum utility of all MS under per-relay power constraint(PPC), an asymptotic optimal resource allocation algorithm based on multi-values discrete particle swarm optimization (MDPSO) was pro-posed. Unlike the traditional discrete particle swarm optimization (DPSO) algorithm, the proposed one denotes the parti-cle position by discrete multi-value variable. Furthermore, new probability based operations for computing particle veloc-ity and updating particle positions were developed, and the mutation of particle positions was also introduced to over-come the premature convergence problem. The proposed MDPSO can also be applied widely to solve the combinatorial optimization problems (COP). Furthermore, iterative waterfilling was used to complete power allocation. Simulation re-sults show that the proposed method achieves higher sum utility of all MSs and higher degree of user fairness than the existing methods.关键词
OFDMA/资源分配/离散粒子群优化/效用函数Key words
OFDMA/resource allocation/discrete particle swarm optimization/utility function分类
信息技术与安全科学引用本文复制引用
李为,熊春林,王德刚,张晓瀛,魏急波..基于多维离散粒子群优化的协同OFDMA系统跨层资源分配[J].通信学报,2014,(4):17-24,8.基金项目
国家自然科学基金资助项目(61101096,61002032,61372098,61372099,61302140,91338105)；湖南省自然科学基金资助项目(11jj4055)@@@@Foundation Items：The National Natural Science Foundation of China (61101096,61002032,61372098,61372099,61302140,91338105) （61101096,61002032,61372098,61372099,61302140,91338105）
The Natural Science Foundation of Hunan Province (11jj4055) （11jj4055）
