Zadoff-Chu Matrix for Reduction of PAPR of Precoded OFDM
Abstract
Orthogonal Frequency Division Multiplexing (OFDM) PAPR (Peak to Power Ratio) is one of the major drawbacks. In this paper we propose a study of PAPR and PAPR reduction technique using ZCT. The Zadoff-Chu Matrix transform (ZCT) is one type of technique used to reduce the PAPR analyzed. In ZCT (Zadoff-ChuMatrix transform) we obtain the ZCT sequences from the ZCT kernel row wise filling which gives rise to the constant Envelope OFDM (CE-OFDM) system and ZCT sequences form column wise and the number of sub carriers used in the OFDM is N=64 with QAM modulation. The final simulation results show the ZCT Row wise precoder based OFDM (ZCT-R-OFDM) system has less PAPR than the ZCT Column wise precoder based OFDM (ZCT-C-OFDM), conventional OFDM.
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