On the achievable information rate with peak-power-limited orthogonal frequency-division multiplexing
- 1 January 2000
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Information Theory
- Vol. 46 (7) , 2579-2587
- https://doi.org/10.1109/18.887865
Abstract
This paper addresses the problem of determining the statistical distribution of the peak-to-average power ratio (PAR) of orthogonal frequency-division multiplexing (OFDM) transmit signals. In practice, transmission systems are amplitude-limited, thus the large peak values of OFDM signals are clipped and nonlinear distortion follows. In order to avoid the resulting degradations, i.e., spectral widening and increased bit-error rate, a systematic construction of OFDM signals without large peaks is desired. The paper provides new results on the PAR distribution and hence on the achievable information rate with OFDM signals that are peak-limited. In particular, it is shown that in the case of phase-shift-keying (PSK) subcarrier modulation, the frequently applied model of Gaussian data coefficients is not appropriate. By solving an integral equation, new analytic expressions for the PAR and the achievable information rate are derived. Comparison with simulation results confirms that the new model is accurate for all ranges of practical interestKeywords
This publication has 12 references indexed in Scilit:
- OFDM signals with low crest-factorPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Trellis shaping for reducing the peak-to-average ratio of multitone signalsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Asymptotic limits in peak envelope power reduction by redundant coding in orthogonal frequency-division multiplex modulationIEEE Transactions on Communications, 1998
- Multitone signals with low crest factorIEEE Transactions on Communications, 1997
- Reducing the peak-to-average power ratio of multicarriermodulation by selected mappingElectronics Letters, 1996
- A method to reduce the probability of clipping in DMT-based transceiversIEEE Transactions on Communications, 1996
- Simple coding scheme to reduce peakfactor in QPSK multicarrier modulationElectronics Letters, 1995
- The distribution of peak factor in QPSK Multi-Carrier modulationWireless Personal Communications, 1995
- Block coding schemefor reduction of peak to mean envelope power ratioof multicarrier transmission schemesElectronics Letters, 1994
- Data Transmission by Frequency-Division Multiplexing Using the Discrete Fourier TransformIEEE Transactions on Communication Technology, 1971