Superposition coded modulation with peak-power limitation
IEEE Transactions on Information Theory
A study of LED nonlinearity effects on optical wireless transmission using OFDM
WOCN'09 Proceedings of the Sixth international conference on Wireless and Optical Communications Networks
Efficient SER measurement method for OFDM receivers with nonlinear distortion
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
Quantifying an iterative clipping and filtering technique for reducing par in OFDM
IEEE Transactions on Wireless Communications
OFDM channel estimation performance under channels with a peak power constraint
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Convergence of the complex envelope of bandlimited OFDM signals
IEEE Transactions on Information Theory
Iterative soft compensation for OFDM systems with clipping and superposition coded modulation
IEEE Transactions on Communications
Low complexity transmit antenna selection with power balancing in OFDM systems
IEEE Transactions on Wireless Communications
PAPR reduction for OFDM systems using clipping and square rooting techniques
Proceedings of the International Conference on Advances in Computing, Communications and Informatics
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Multicarrier signals are known to suffer from a high peak-to-average power ratio, caused by the addition of a large number of independently modulated subcarriers in parallel at the transmitter. When subjected to a peak-limiting channel, such as a nonlinear power amplifier, these signals may undergo significant spectral distortion, leading to both in-band and out-of-band interference, and an associated degradation in system performance. This paper characterizes the distortion caused by the clipping of multicarrier signals in a peak-limiting (nonlinear) channel. Rather than modeling the effects of distortion as additive noise, as is widespread in the literature, we identify clipping as a rare event and focus on evaluating system performance based on the conditional probability of bit error given the occurrence of such an event. Our analysis is based on the asymptotic properties of the large excursions of a stationary Gaussian process, and offers important insights into both the true nature of clipping distortion, as well as the consequent design of schemes to alleviate this problem