摘要
提出了一种新的时域二阶多项式奈奎斯特(Nyquist)窗,用于在接收端抑制正交频分复用系统中由频偏引起的载波间干扰,同时分析了接收端的信号干扰噪声比(SINR)。通过选择最佳的窗参数,使接收端的SINR达到最大化,从而具有最佳接收性能。这种新的二阶多项式窗的性能被证明优于升余弦窗函数和"better than"Nyquist窗函数。
A new class of time domain second order polynomial Nyquist window functions is proposed and applied to orthogonal frequency-division multiplexing(OFDM) systems for reducing frequency offset induced inter-carrier interference(ICI) at the receiver.The signal to ICI plus noise ratio(SINR) performances of the receiver is analyzed.It also proposes a method to select the window parameters to maximize the SINR of the receiver and to get an optimal performance.The receiving method with optimal second order polynomial window demonstrates a good performance compared with raised cosine and "better than" Nyquist window.
出处
《南京邮电大学学报(自然科学版)》
2011年第5期27-32,共6页
Journal of Nanjing University of Posts and Telecommunications:Natural Science Edition
基金
国家自然科学基金(60972041
60572130)
江苏省高校自然科学基础研究计划重大项目(08KJD510001)
教育部博士点基金(200802930004)
东南大学移动通信国家重点实验室开放课题
国家科技重大专项(2009ZX03003-006)资助项目