变换域通信系统QAM调制及抗干扰性能仿真  

QAM Modulation of Transform Domain Communication System and its Performance Simulation for Interference Suppression

作　　者：李正刚[1] 任清华[1] 赵长雷[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《电讯技术》2008年第11期15-18,共4页Telecommunication Engineering

基　　金：国家"863"创新基金项目(2007AAJ130)

摘　　要：针对变换域通信系统现有调制方式频谱效率较低的情况,提出了在变换域通信系统中实现QAM调制(TD-QAM)的方法。基于MATLAB,验证了TD-QAM的正确性,仿真了TD-QAM在部分频带干扰下的性能。结果表明,所提出的TD-QAM差错概率与常规数字QAM调制一致,同时具备较强的抗部分频带干扰的能力。A QAM realization method in transform domain communication system（TDCS） is crease the spectrum usage. The effectiveness of realizing TD - QAM is demonstrated by MATLAB, and the interference suppression performance in partial bands jamming is simulated. The result shows that TD - QAM can effectively increase the spectrum usage, while obtaining the ability to interference suppression.

关 键 词：变换域通信系统 TD—QAM调制 抗干扰 差错概率 

分 类 号：TN92[电子电信—通信与信息系统]