基于改进粒子群算法的OFDM系统资源分配  

Resource Allocation of OFDM Systems Based on Enhanced Particle Swarm Optimization Algorithm

作　　者：陈岩[1] 

机构地区：[1]辽宁工程技术大学,葫芦岛125105

出　　处：《计算机系统应用》2012年第7期114-118,共5页Computer Systems & Applications

摘　　要：提出一种具有全局优化能力的改进粒子群算法,将信道分配和比特功率分配问题相结合,实现电力线信道下多用户自适应OFDM比特功率分配。在典型低压电力线通信信道环境下的matlab仿真结果表明:本文提出的算法可行且有效,适合多用户通信环境,节省了多用户自适应OFDM系统的运算时间,降低了发射功率,且算法简单易操作,有望应用于更广泛的优化问题。A new versatile optimization called enhanced particle swarm algorithm is presented.The algorithm with global optimization ability combined channel allocation and bit power allocation together,and realized the bit-power allocation of muti-user adaptive OFDM system in power-line channel environment.The matlab simulation results in typical low voltage power lines communication channel environment show that the proposed algorithm is feasible and effective.It is suitable for multi-user adaptive OFDM communication environment.Using this new algorithm,the operation time of the system can be saved and the transmission power can be reduced.The algorithm is also very easy to operate.It will be used for more extensive optimization problems.

关 键 词：自适应OFDM 比特功率分配 改进粒子群算法 信道仿真 

分 类 号：TN919.3[电子电信—通信与信息系统]