MIMO-OFDM系统基于线性预编码的自适应加载方案  

Adaptive Loading Scheme Based on Linear Precoding for MIMO-OFDM System

作　　者：魏仁[1] 陈力[1] 龙自强[1] 李雪利[1] 

机构地区：[1]汕头大学,广东汕头515063

出　　处：《现代电子技术》2007年第10期85-87,共3页Modern Electronics Technique

基　　金：国家自然科学基金项目(60275011)

摘　　要：在MIMO-OFDM无线通信系统中,采用基于子载波线性预编码设计和变步长加载算法得到一种优化的自适应加载算法,在完全已知信道状态前提下,能在满足固定速率和给定误比特率约束下使系统总发射功率达到最小。仿真结果表明,该算法复杂度比Capello算法低,并且性能与之近似,都远远优于非自适应MIMIO系统的性能。An adaptive modulation scheme is proposed in order to minimize the total transmission power subject to given BER and transmit data rate in MIMO - OFDM wireless communication systems. It is derived from a linear precoding design and various-step adaptive loading algorithm. The simulation results show that the presented algorithm has a similar system performance to Capello algorithm,but less complexity than it, and both performances are much better than non- adaptive MIMO system.

关 键 词：多输入多输出 正交频分复用 线性预编码 比特加载 

分 类 号：TN911[电子电信—通信与信息系统]