摘要
针对两跳多输入多输出正交频分复用(MIMO-OFDM,Multiple-Input Multiple-Output-orthogonal frequency division multiplex)中继通信系统的最优功率分配问题,提出了基于改进粒子群算法(PSO,Partical Swarm Optimization)的分配方案。在约束总发射功率的情况下,利用粒子群算法设置参数少、收敛速度快、全局寻优能力强等特点,将其改进后引入到两跳MIMO-OFDM中继通信系统的最优功率分配中。仿真结果表明,与现有的分配方法相比,改进粒子群算法在同等条件下能更有效地分配功率,提升系统容量,增强系统的传输能力。
Optimal power allocation based on improved Particle Swarm Optimization（PSO） for two-hop multiple input multiple output-orthogonal frequency division multiplexing relaying communication system is studied and proposed.In the constraint of total transmit power,with its characteristics of fewer parameters,rapid-speed convergence and strong capability of global search,the PSO algorithm is impoved and introduce into the optimal power allocation.Simulation results show that,as compared with the traditional allocation methods,the improved PSO algorithm can provide a more efficient allocation ofpower,and enhance the system capacity and the transmission ability under the same conditions.
出处
《通信技术》
2011年第3期125-128,共4页
Communications Technology
