一种自适应跨层空间子信道分配算法——基于多用户MIMO/OFDM系统  

An Adaptive Cross-layer Spatial Subchannel Allocation Algorithm——Based on Multiuser MIMO/OFDM Systems

作　　者：卢小峰[1] 朱光喜[1] 宁国勤[1] 韩锋[1] 

机构地区：[1]华中科技大学电信系,武汉430074

出　　处：《计算机科学》2006年第11期10-13,33,共5页Computer Science

基　　金：国家自然科学基金资助项目(60496315);国家"863"计划资助项目(2003AA12331005)

摘　　要：MI MO/OFDM是未来宽带无线通信接口的有效架构。本文提出了一种自适应跨层空间子信道分配算法,在多用户MI MO/OFDM系统中,联合链路层截短ARQ(T-ARQ)技术,以获取物理层最大的系统吞吐量为目标,推导了子载波分配准则,并给出了相应的算法流程。仿真结果表明,该算法具有良好的性能,有效地提高了系统的传输速率。MIMO/OFDM is an effective architecture for future wireless communication systems. An adaptive cross-layer spatial subchannel allocation algorithm based on multiuser MIMO/OFDM systems is proposed in this paper. With the goal of maximizing overall data throughput in the physical layer we derive the criteria of subcarrier allocation and develop the adaptive allocation approach by using the T-ARQ technology in the link layer. The simulation results show that our proposed algorithm can achieve good performance and high total transmission rate efficiently.

关 键 词：MIMO/OFDM(多入多出/正交频分复用) 自适应空间子道分配 跨层 吞吐量 

分 类 号：TN929.5[电子电信—通信与信息系统]