Preamble-aided time delay estimation in frequency selective channels for wireless OFDM systems

The Journal of Engineering

Suili Feng¹  Qun Yu²  Haisheng Lin⁴  RongLin Li⁴ 

[1] GuangDong Mobile Communications Corporation, Shenzhen Branch, Shenzhen 518048, People'School of Electro-Mechanical Engineering, Guangzhou University, Guangzhou 510006, People'School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China

关键词: multipath number;    preamble-aided orthogonal frequency division multiplexing systems;    frequency selective channel;    computer simulation;    cross-correlation technique;    preamble-aided time delay estimation;    preamble structure;    wireless OFDM systems;   

DOI  :  10.1049/joe.2014.0171

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

In this Letter, an improved method for estimating the time delay in preamble-aided orthogonal frequency division multiplexing systems is presented. It uses a conventional preamble structure and combines cross-correlation techniques to achieve estimations of time delay and the number of multipaths without any additional overhead. Computer simulations results show that the proposed method is of near-ideal property in frequency-selected channels.

【 授权许可】

CC BY