Sergey V. Zhidkov

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Most of the performance studies devoted to the analysis of multicarrier systems in the presence of nonlinear distortion assume that the multicarrier signal can be modeled as a random Gaussian process regardless of modulation format, guard interval duration, and number of subcarriers. On the contrary, we present an analysis based on the discrete model of the(More)
In this paper, we propose a practical receiver for multicarrier signals subjected to a strong memoryless nonlinearity. The receiver design is based on a generalized approximate message passing (GAMP) framework, and this allows realtime algorithm implementation in software or hardware with moderate complexity. We demonstrate that the proposed receiver can(More)
In the context of orthogonal frequency division multiplexing (OFDM), nonlinearity is usually considered a highly undesirable phenomenon. In this letter, we demonstrate that if a suitable memoryless nonlinearity is applied to the uncoded OFDM signal on the transmitter side, the performance of the communication system may be similar to that of(More)
Nonlinear distortion in power amplifiers (PA) can significantly degrade performance of orthogonal frequency division multiplexed (OFDM) communication systems. This paper presents a joint maximum-likelihood channel frequency response and nonlinear PA model estimator for OFDM signals. Derivation of the estimator is based on Taylor-series representation of(More)
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