OFDM-CDMA with Low PAPR Using Cyclic-Shifted Sequence Mapping

Young-Hwan YOU
Jeong-Wook SEO
Byoung-Chul SONG
Hyeok-Koo JUNG

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E86-A    No.12    pp.3310-3313
Publication Date: 2003/12/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Communication Theory and Signals
OFDM-CDMA,  peak-to-average power ratio (PAR),  cyclic-shifted sequences,  selective mapping,  

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In this letter, a simple peak-to-average power ratio (PAPR) reduction scheme by using a cyclic-shifted sequence mapping is addressed in OFDM-CDMA systems. The PAPR reduction approach is very simple because of no additional complexity and no side information. Also, this simple approach can be easily combined with a modified selective mapping (SLM) approach, which outperforms the original SLM approach at the expense of one additional side information, guaranteeing approximately same transmitter complexity.