摘要： 窗函数已被广泛地应用于多输入多输出-正交频分复用系统的接收端，以降低系统对频率偏移的灵敏性，减小载波间干扰，改进接收机，提高系统性能。该文将矩形窗、升余弦窗、优于升余弦窗和二阶连续窗以时域加窗的方式应用于MIMO-OFDM系统接收机，并通过理论分析和计算机仿真就各窗函数对系统性能的影响进行了比较分析。
关键词:
多输入多输出-正交频分复用,
频率偏移,
接收窗,
载波间干扰
Abstract: Windowing has been widely used to improve receiver of Multi-Input and Multi-Output Orthogonal Frequency-Division Multiplexing (MIMO-OFDM) system, which can suppress frequency offset that reduces Inter-Carrier Interference(ICI). In this paper, kinds of windows, including rectangular, raised cosine, better-than raised cosine and second order continuous window, are plunged into a MIMO-OFDM receiver in time domain to impact ICI. Performance of these windows is studied both by theoretical analyses and computer simulation.
Key words:
Multi-Input and Multi-Output Orthogonal Frequency-Division Multiplexing(MIMO-OFDM),
frequency offset,
receiver window,
Iner-Carrier Interference(ICI)
中图分类号:
郑维珺;何 晨. MIMO-OFDM系统中接收窗函数的性能比较[J]. 计算机工程, 2007, 33(24): 107-108.
ZHENG Wei-jun; HE Chen. Performance Comparison of Receiver Windows for MIMO-OFDM System[J]. Computer Engineering, 2007, 33(24): 107-108.