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Joint Frequency Offset and Channel Estimation for OFDM/OQAM Systems
Guobing CHENG Yue XIAO Shaoqian LI Hui YAN
IEICE TRANSACTIONS on Communications
Publication Date: 2012/05/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
OFDM/OQAM, frequency offset estimation, channel estimation, preamble,
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OFDM/offset-QAM (OFDM/OQAM) has been proven to be a promising multi-carrier transmission technique. However, carrier frequency offset (CFO) can lead to severe inter-carrier interference (ICI) and performance degradation. Meanwhile, channel estimation is also an important issue because of the intrinsic characteristics of OFDM/OQAM. In this paper, a novel pilot structure and a frequency-domain cross-correlation algorithm are proposed for the joint CFO and channel estimation. Analysis and simulation results validate the effectiveness of the proposed pilot structure and estimation algorithm.