ARMA companding scheme with improved symbol error rate for PAPR reduction in OFDM systems
- 1 April 2010
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
This paper proposes a new nonlinear companding scheme with reduced symbol error rate (SER) that can be used to reduce peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed system outperforms conventional companding systems using the same nonlinear companding functions with respect to SER without impairing PAPR reduction capability. The proposed system estimates a few autoregressive moving average (ARMA) model parameters of the difference signal between the companded and uncompanded OFDM envelopes and passes these parameters to the receiver. Upon receiving the ARMA model parameters, the receiver regenerates the difference signal and then adds it to the received companded OFDM envelope to recover the uncompanded OFDM signal. The traditional schemes employ decompanding process instead to reconstruct the uncompanded OFDM signal. Mathematical proofs and simulation results for three typical nonlinear companding functions show that, under mild sufficient conditions, the proposed scheme outperforms the conventional schemes with respect to SER performance without impairing PAPR reduction capability.Keywords
This publication has 8 references indexed in Scilit:
- On the Nonlinear Companding Transform for Reduction in PAPR of MCM SignalsIEEE Transactions on Wireless Communications, 2007
- Optimal Adaptive Hyperbolic Companding for OFDMPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Modulation, coding and signal processing for wireless communications - An overview of peak-to-average power ratio reduction techniques for multicarrier transmissionIEEE Wireless Communications, 2005
- Nonlinear Companding Transform for Reducing Peak-to-Average Power Ratio of OFDM SignalsIEEE Transactions on Broadcasting, 2004
- On the peak-to-average power of ofdm signals based on oversamplingIEEE Transactions on Communications, 2003
- Computation of the continuous-time PAR of an OFDM signal with BPSK subcarriersIEEE Communications Letters, 2001
- New high-rate wireless LAN standardsIEEE Communications Magazine, 1999
- Reduction of peak-to-average power ratio of OFDM system using a companding techniqueIEEE Transactions on Broadcasting, 1999