Abstract:
Orthogonal frequency-division multiplexing (OFDM) baseband signals may be modeled by complex Gaussian processes with Rayleigh envelope distribution and uniform phase dist...Show MoreMetadata
Abstract:
Orthogonal frequency-division multiplexing (OFDM) baseband signals may be modeled by complex Gaussian processes with Rayleigh envelope distribution and uniform phase distribution, if the number of carriers is sufficiently large. The output correlation function of instantaneous nonlinear amplifiers and the signal-to-distortion ratio can be derived and expressed in an easy way. As a consequence, the output spectrum and the bit-error rate (BER) performance of OFDM systems in nonlinear additive white Gaussian noise channels are predictable both for uncompensated amplitude modulation/amplitude modulation (AM/AM) and amplitude modulation/pulse modulation (AM/PM) distortions and for ideal predistortion. The aim of this work is to obtain the analytical expressions for the output correlation function of a nonlinear device and for the BER performance. The results in closed-form solutions are derived for AM/AM and AM/PM curves approximated by Bessel series expansion and for the ideal predistortion case.
Published in: IEEE Transactions on Communications ( Volume: 48, Issue: 3, March 2000)
DOI: 10.1109/26.837046
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- IEEE Keywords
- Index Terms
- Additive Noise ,
- Orthogonal Frequency Division Multiplexing ,
- Orthogonal Frequency Division Multiplexing Signal ,
- Nonlinear Channel ,
- Fourier Transform ,
- System Performance ,
- Output Power ,
- Gaussian Noise ,
- Input Signal ,
- Correlation Function ,
- Power Spectral Density ,
- Gaussian Process ,
- Bit Error Rate ,
- Power Amplifier ,
- Instantaneous Amplitude ,
- Complex Gaussian ,
- Bit Error Rate Performance ,
- Input Amplitude ,
- Nonlinear Distortion ,
- Nonlinear Devices ,
- Complex Nonlinear Functions ,
- Thermal Noise ,
- Nonlinear Function ,
- Guard Band ,
- Discrete Fourier Transform ,
- Symbol Error Rate ,
- Stationary Process ,
- Power Ratio ,
- Orthogonal Frequency Division Multiplexing Symbol ,
- Input Power
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Additive Noise ,
- Orthogonal Frequency Division Multiplexing ,
- Orthogonal Frequency Division Multiplexing Signal ,
- Nonlinear Channel ,
- Fourier Transform ,
- System Performance ,
- Output Power ,
- Gaussian Noise ,
- Input Signal ,
- Correlation Function ,
- Power Spectral Density ,
- Gaussian Process ,
- Bit Error Rate ,
- Power Amplifier ,
- Instantaneous Amplitude ,
- Complex Gaussian ,
- Bit Error Rate Performance ,
- Input Amplitude ,
- Nonlinear Distortion ,
- Nonlinear Devices ,
- Complex Nonlinear Functions ,
- Thermal Noise ,
- Nonlinear Function ,
- Guard Band ,
- Discrete Fourier Transform ,
- Symbol Error Rate ,
- Stationary Process ,
- Power Ratio ,
- Orthogonal Frequency Division Multiplexing Symbol ,
- Input Power
