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A PRSC selection scheme based on PN code for OFDM PAPR reduction

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3 Author(s)
Jeong Ju Choi ; Sch. of Electron. Eng., Soongsil Univ., Seoul, South Korea ; Suck Chel Yang ; Yoan Shin

For PAPR (peak-to-average power ratio) reduction in OFDM (orthogonal frequency division multiplexing) systems, we propose an effective PRSC (PAPR reduction sub-carrier) selection scheme using PN (pseudonoise) code. The conventional PRSC selection scheme using an ideal random sequence may achieve the optimal performance with the lowest PAPR; however, excessive overhead from the transmitter to the receiver is inevitable. The proposed scheme exploits a PN code based PRSC selection sequence which is generated by applying starting points determined by bit reversing and gradually-increasing offsets. Simulation results show that the proposed PRSC selection scheme achieves a performance which is quite good and is closely comparable to the case of the ideal random sequence, while requiring virtually no overhead.

Published in:

Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004. Proceedings of 2004 International Symposium on

Date of Conference:

18-19 Nov. 2004

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