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Peak-cancellation is a pre-distortion technique for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems. The distortion introduced to the transmitted signals can be mitigated on the condition that the signal attenuation factor is known at the receiver. In this paper, to alleviate the distortion and disclose the signal feature of peak-cancellation...
This paper presents an improved carrier frequency offset (CFO) estimator using cyclic prefix (CP) for orthogonal frequency division multiplexing (OFDM) systems. The basic principle is to detect the sign of the CFO value firstly, which will facilitate the extension of the estimation range of the estimator. It is shown by simulation results that the proposed estimator can achieve a double CFO estimation...
This letter presents a class of low complexity partial transmit sequence (LC-PTS) techniques for reducing the peak-to- average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The basic principle is to analyze and utilize the correlation among the candidate signals generated in PTS, so as to simplify the computational complexity. Furthermore, the proposed technique...
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