ST-OFDM载波间干扰线性均衡技术  

Linear Equalization of Suppression Inter-carrier Interference in ST-OFDM Systems

作　　者：苗睿锋[1] 王永生[1] 姚如贵[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072

出　　处：《计算机应用研究》2006年第1期164-167,共4页Application Research of Computers

基　　金：国防"973"基金资助项目(51308)

摘　　要：分析了频率非选择性衰落信道下ST-OFDM系统载波间干扰的具体内容,利用连续发射已知ST-OFDM符号来估计ST-OFDM中各个子载波对其他子载波的干扰,然后通过特定的线性均衡方法达到ST-OFDM载波间干扰的抑制。在莱斯衰落信道下的仿真结果表明,选择6个相邻子载波12个干扰系数的均衡技术ST-OFDM系统可获得至少10dB的信干比增益,可以使ST-OFDM系统在性能和运算量上获得最佳。Those are studied that Inter-Carrier Interference（ICI） over un-frequency-selective fading channel and a linear equalization of suppressing ICI in ST-OFDM system. A Topelitz matrix is computed to get ICI co efficiencies in ST-OFDM, and then the results are used in the linear equalization to suppress ICI, Simultaneously a linear equalization of employing partial ICI co efficiencies is studied to provide gain in complexity and performance. Simulations indicate the linear equalization provides a gain of lOdB at least by employing 12 ICI co efficiencies over rician channel. The partial linear equalization is more efficiency than all ICI equalization.

关 键 词：ST-OFDM ICI SIR 频率偏移系数 线性均衡 

分 类 号：TN973.3[电子电信—信号与信息处理]