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Pilot-Aided ICI Self-Cancellation Scheme for OFDM Systems
Chih-Peng LI Wei-Wen HU
IEICE TRANSACTIONS on Communications
Publication Date: 2006/03/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment for Communications
OFDM, inter-carrier interference (ICI), synchronization, pilot,
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In this letter, a novel pilot-aided inter-carrier interference (ICI) self-cancellation scheme is proposed for use in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme maps both modulated data symbols and pre-defined pilot symbols onto non-neighboring sub-carriers with weighting coefficients of +1 and -1. With the aid of pilot symbols, a more accurate estimation of frequency offsets can be obtained, and the ICI self-cancellation demodulation can be operated properly.