摘要
基于IEEE802.11a对OFDM系统中的帧检测进行了研究.由于OFDM帧结构的特殊性,即在帧的开头具有完全相同的16个短前导字,故其具有良好的相关性,鉴于此提出了一种低复杂度的帧检测方法.这种方法在信噪比为10 dB以上的信道性能良好,与目前的帧检测方法比较起来具有硬件实现复杂低,门限设置简单的优点.
This paper studies the frame detection for OFDM systems based on IEEE802.11a. The frame construction of OFDM systems has a special feature, namely at the beginning the frame has the same sixteen short preamble training sequence, and the sequence has excellent auto-correlation, This paper presents a low-complexity frame detection scheme based on this feature. This method works well when SNR equals to 10 dB. In particular, this methed is low in complexity of hardware realization and is simple in limit setup.
出处
《中国计量学院学报》
2005年第4期275-278,共4页
Journal of China Jiliang University
关键词
OFDM系统
短前导序列
帧检测
short preamble training sequence
frame detection
correction.
