Abstract
Side information (SI) detection is normally needed to achieve successful data reception when selected mapping is implemented for reducing peak-to-average power ratio in orthogonal frequency division multiplexing systems. In severe frequency selective channel fading, existing pilot-assisted SI estimation schemes are ineffective especially when the number of pilots is limited, resulting in performance degradation in the form of increased BER. To address this problem, an alternative pilot-assisted SI estimation method based on a time-domain decision metric is proposed. Simulations show that when compared to a pilot-assisted SI estimation scheme based on frequency domain correlation, the proposed method provides improved SI estimation performance in the form of reduced SI detection error rate.
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Adegbite, S.A., McMeekin, S.G. & Stewart, B.G. Time-Domain SI Estimation for SLM Based OFDM Systems Without SI Transmission. Wireless Pers Commun 85, 1193–1203 (2015). https://doi.org/10.1007/s11277-015-2834-z
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DOI: https://doi.org/10.1007/s11277-015-2834-z