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Bias Robust Channel Prediction for OFDM based Adaptive Modulation

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4 Author(s)
Hoiyoon Jung ; Sch. of Eng., Inf. & Commun. Univ., Daejeon, South Korea ; Hyoungsuk Jeon ; Jongsub Cha ; Hyuckjae Lee

Adaptive modulation in OFDM systems is receiving remarkable attention as a scheme for improving spectral efficiency and error performance simultaneously. A major issue of the system is the necessity of channel information feedback that raises a problem of propagation delays. Linear channel prediction with drawback of biasing effect has been previously proposed to overcome propagation delays. In this paper, to avoid biasing effect, we propose channel prediction based on interpolation. Simulation results show that the proposed scheme has noticeable benefits of not only spectral efficiency but also error performance in OFDM systems using adaptive modulation.

Published in:

Communications and Electronics, 2006. ICCE '06. First International Conference on

Date of Conference:

10-11 Oct. 2006