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PAPR and Spectral Control Procedure for OFDM Wireless Systems Using CAZAC Equalization

Authors:
Yoshitsugu Sugai
Yushi Shirato
Tomotaka Kimura
Masahiro Muraguchi

Keywords: OFDM; CAZAC; spectrum mask; PAPR.

Abstract:
A major drawback of Orthogonal Frequency Division Multiplexing (OFDM) signals is extremely high Peak-to-Average Power Ratio (PAPR). The CAZAC equalization scheme makes the PAPR of M-array Quadrature Amplitude Modulation (M-QAM) OFDM signals into the PAPR of M-QAM single-carrier signals. Therefore, it dramatically improves the PAPR of OFDM signals. However, severe bandpass filtering of CAZAC-OFDM signal lead to unacceptable degradation of the PAPR. The paper provides available control procedure for PAPR and spectrum managements. It is confirmed that the CAZAC-OFDM signal controlled by our procedure maintains enough low PAPR and can clear the spectrum mask specifications in IEEE802.11 standard.

Pages: 75 to 80

Copyright: Copyright (c) IARIA, 2018

Publication date: July 22, 2018

Published in: conference

ISSN: 2308-4030

ISBN: 978-1-61208-650-7

Location: Barcelona, Spain

Dates: from July 22, 2018 to July 26, 2018