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

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...

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Bibliographic Details
Main Authors: Jeong Ju Choi, Suck Chel Yang, Shin, Y.
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Fading
Noise reduction
OFDM modulation
Peak to average power ratio
Phase shift keying
Quadrature amplitude modulation
Random sequences
Transmitters
Wireless LAN
Online Access:Request full text
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Summary: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.
DOI:10.1109/ISPACS.2004.1439049