Orthogonal Frequency Division Multiple Access Peak-to-Average Power Ratio Reduction using Optimized Pilot Symbols

摘要

In this paper, Optimized Pilot Symbol (OPS) technique is proposed to reduce the Peakto-average Power Ratio (PAPR) of Orthogonal Frequency Division Multiple Access (OFDMA) systems. The proposed PAPR reduction scheme is designed for OFDMA systems where the sub-carriers assigned to each user are selected in clusters of consecuitve subcarriers. Using the proposed scheme, the PAPR can be significantly reduced while maintaining low complexity and high flexibility on the channel assignment.