摘要
正交频分复用(OFDM)系统中,基于训练序列的载波频率同步算法种类繁多,文中将其分为利用训练序列自身结构特点进行同步和利用本地已知训练序列进行同步两大类进行讨论,比较了它们的优缺点,重点研究了定时偏差对估计性能的影响。结论表明,只要合理设计训练序列的结构,第一类算法可以有效克服定时偏差的影响。
In orthogonal frequency division multiplexing（OFDM） system,there are many carrier frequency synchronism methods based on training sequence,which fall into two kinds：synchronization with the structural characteristics of the training sequence,and the known training sequence.The advantages and disadvantages of the two are discussed,and the impact of timing error on estimation is analyzed.Conclusions indicate that the former algorithm can effectively overcome the impact of timing error with proper training sequence.
出处
《电子科技》
2010年第10期62-64,共3页
Electronic Science and Technology
