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

The Journal of Engineering

Qun Yu¹  Haisheng Lin²  Suili Feng³  RongLin Li³ 

[1] Guangzhou University;Shenzhen Branch;South China University of Technology;

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

DOI  :  10.1049/joe.2014.0171

来源: DOAJ

【 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】

Unknown