OFDM系统中一种改进的抗频偏加窗法  

An Improved Anti-frequency-offset Method by Windowing in OFDM Systems

作　　者：代康[1] 宋荣方[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003

出　　处：《电子与信息学报》2007年第8期1916-1918,共3页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60572130);东南大学移动通信国家重点实验室开放课题基金(N200603)资助课题

摘　　要：该文提出了正交频分复用系统中一种改进的抗频偏接收端加窗的方法,接收端在去除发送端附加的循环前缀后重新进行循环扩展,然后进行奈奎斯特加窗,并且窗函数不再限于具体的函数形式,是经过优化的数值解。数值计算结果表明,最优窗的抗频偏性能远好于其他窗函数。An improved anti-frequency-offset method by windowing in OFDM systems is proposed. The cyclic prefix added at the transmitter side is first removed at the receiver, and then a new cyclic prefix is appended, finally the ＂new＂ signal is windowed by a Nyquist window, which is optimized numerical solution. Numerical results show that the anti-frequency-offset capability of the optimized window is much better than other windows.

关 键 词：正交频分复用 载频偏移 奈奎斯特窗 载波间干扰 

分 类 号：TN929.5[电子电信—通信与信息系统]