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This work evaluates the peak-to-average power ratio (PAPR) performance in a coded orthogonal frequency-division multiplexing (C-OFDM) system using the selective mapping (SLM) approach. Repetition-coded side-information (SI) bits specifying which one of several possible phase sequences is being used are embedded in the data stream at the transmitter before convolutional coding, interleaving, and QAM...
The high peak-to-average power ratio (PAPR) of orthogonal frequency multiplexing (OFDM) greatly reduces the transmitter power efficiency. We propose a method that yields significant and consistent PAPR reductions for all numbers of users (receivers) in a beamforming MISO-OFDM system, such as WiMAX, by simultaneously exploiting the degrees of freedom in the constellation domain and in the null-space...
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