自适应多门限算法的MIMO-TDCS的设计与研究  

Design and Research of MIMO-TDCS Based on Adaptive Multi-threshold Algorithm

作　　者：莫建云[1] 任清华[1] 

机构地区：[1]空军工程大学信息与导航学院,西安710077

出　　处：《科学技术与工程》2012年第29期7754-7758,共5页Science Technology and Engineering

基　　金：国家自然科学基金项目(60972042)资助

摘　　要：针对已研究的多输入多输出变换域通信系统(Multiple-input Multiple-output Transform Domain Communication System,MIMO-TDCS)的基函数生成算法,利用了传统的二元判决方法不能准确反应信道质量差别的问题,提出了一种采用自适应多门限基函数生成算法的MIMO-TDCS系统。理论分析表明,此系统能够较好地克服传统二元判决算法不能充分体现各可用子信道质量差别的缺点,充分利用各可用子信道质量差别分配信号功率,提高了系统误码率性能。通过仿真分析,验证了此系统的可行性,以及此系统具有较强的抗干扰能力。For basis function generation algorithm of the traditional MIMO-TDCS based on binary adjudicate have the problem of reflecting the difference of channel quality inaccurately, a kind of MIMO-TDCS based on adap- tive multi-threshold algorithm for basis function generation is proposed. The theoretical analysis shows that the algo- rithm of basis functions generation based on adaptive multi-threshold can overcome the shortcoming of the traditional binary adjudicate threshold algorithm of bad adaptability and reflecting channel quality inaccurately. It allocates power of signal depending on the difference of channel quality and make power allocation more reasonably, so it can improve the performance of bit error. The simulation results show that the system is a kind of available communica- tion technique which has strong anti-interference ability.

关 键 词：多输入多输出变换域通信系统 基函数生成算法 自适应多门限算法 功率分配 

分 类 号：TN919.2[电子电信—通信与信息系统]