Optimum frame and frequency synchronization for OFDM systems

被引：1
|
作者：
You, CJ [1 ]
Horng, JH [1 ]
机构：
[1] Mitsubishi Electr Corp, Res Labs, Murray Hill, NJ USA
来源：
ICCE: 2001 INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS, DIGEST OF TECHNICAL PAPERS | 2001年
关键词：
D O I：
10.1109/ICCE.2001.935286
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we propose an optimum frame and carrier frequency synchronization method for a burst type orthogonal frequency division multiplexing (OFDM) application such as wireless local area network (WLAN). In the case of burst transmission, rapid frequency synchronization is essential in order to rapidly achieve orthogonality among subcarriers [3]. By estimating the frequency offset and timing offset before and after the demodulation we can achieve acquisition within one OFDM symbol period. Due to the subcarrier ambiguity in the maximum likelihood estimation (MLS) frequency detector before demodulation, the maximum correctable frequency range is limited to +/- 1/2 of the subcarrier spacing. This problem can be solvated by using a frequency acquisition method after FFT.
引用
收藏
页码：226 / 227
页数：2
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