LI Yan-ping, ZHANG Li-yong. An Improved Algorithm of OFDM Symbol Timing Based on A New Training Sequence[J]. 2012, 17(2): 19-21.DOI:
新训练序列下的改进OFDM符号定时算法
摘要
正交频分复用(OFDM)技术是一种多载波调制技术
它以频谱利用率高
抗多经衰落能力强等优点得到广泛应用
但OFDM系统对符号定时误差十分敏感
为解决OFDM系统这一问题
在Schmidl算法和Minn算法的基础上
提出了一种新的OFDM符号定时算法.该算法给出了新的训练符号
并对Schmidl算法的时间测度函数进行了改进
仿真结果表明
该算法不仅能够准确的找出符号定时位置
而且具有较低的误比特率.
Abstract
Orthogonal frequency division multiplexing(OFDM) is a multi-carrier modulation technology
and it is widely used due to its advantages such us high spectrum efficiency and strong anti-multipath faidng ability.However it is particularly sensitive to symbol synchronization errors
so its application has been limited.In order to solve the problem
a novel OFDM symbol timing algorithm is proposed based on Schmidl algorithm and Minn algorithm.A new training symbol is given and time metric in Schmidl alg...